head 1.1; branch 1.1.1; access; symbols netbsd-9-5-RELEASE:1.1.1.14 netbsd-11-0-RELEASE:1.1.1.15 netbsd-11-0-RC7:1.1.1.15 netbsd-11-0-RC6:1.1.1.15 netbsd-11-0-RC5:1.1.1.15 netbsd-11-0-RC4:1.1.1.15 netbsd-11-0-RC3:1.1.1.15 netbsd-11-0-RC2:1.1.1.15 netbsd-11-0-RC1:1.1.1.15 perseant-exfatfs-base-20250801:1.1.1.15 netbsd-11:1.1.1.15.0.10 netbsd-11-base:1.1.1.15 netbsd-10-1-RELEASE:1.1.1.15 perseant-exfatfs-base-20240630:1.1.1.15 perseant-exfatfs:1.1.1.15.0.8 perseant-exfatfs-base:1.1.1.15 netbsd-8-3-RELEASE:1.1.1.12 netbsd-9-4-RELEASE:1.1.1.14 netbsd-10-0-RELEASE:1.1.1.15 netbsd-10-0-RC6:1.1.1.15 netbsd-10-0-RC5:1.1.1.15 netbsd-10-0-RC4:1.1.1.15 netbsd-10-0-RC3:1.1.1.15 netbsd-10-0-RC2:1.1.1.15 netbsd-10-0-RC1:1.1.1.15 netbsd-10:1.1.1.15.0.6 netbsd-10-base:1.1.1.15 netbsd-9-3-RELEASE:1.1.1.14 cjep_sun2x:1.1.1.15.0.4 cjep_sun2x-base:1.1.1.15 cjep_staticlib_x-base1:1.1.1.15 netbsd-9-2-RELEASE:1.1.1.14 cjep_staticlib_x:1.1.1.15.0.2 cjep_staticlib_x-base:1.1.1.15 netbsd-9-1-RELEASE:1.1.1.14 phil-wifi-20200421:1.1.1.15 phil-wifi-20200411:1.1.1.15 phil-wifi-20200406:1.1.1.15 netbsd-8-2-RELEASE:1.1.1.12 netbsd-9-0-RELEASE:1.1.1.14 netbsd-9-0-RC2:1.1.1.14 netbsd-9-0-RC1:1.1.1.14 netbsd-9:1.1.1.14.0.2 netbsd-9-base:1.1.1.14 phil-wifi-20190609:1.1.1.14 netbsd-8-1-RELEASE:1.1.1.12 netbsd-8-1-RC1:1.1.1.12 pgoyette-compat-merge-20190127:1.1.1.13.2.1 pgoyette-compat-20190127:1.1.1.14 pgoyette-compat-20190118:1.1.1.14 pgoyette-compat-1226:1.1.1.14 pgoyette-compat-1126:1.1.1.14 pgoyette-compat-1020:1.1.1.14 pgoyette-compat-0930:1.1.1.14 pgoyette-compat-0906:1.1.1.14 netbsd-7-2-RELEASE:1.1.1.7.2.1 pgoyette-compat-0728:1.1.1.14 clang-337282:1.1.1.14 netbsd-8-0-RELEASE:1.1.1.12 phil-wifi:1.1.1.13.0.4 phil-wifi-base:1.1.1.13 pgoyette-compat-0625:1.1.1.13 netbsd-8-0-RC2:1.1.1.12 pgoyette-compat-0521:1.1.1.13 pgoyette-compat-0502:1.1.1.13 pgoyette-compat-0422:1.1.1.13 netbsd-8-0-RC1:1.1.1.12 pgoyette-compat-0415:1.1.1.13 pgoyette-compat-0407:1.1.1.13 pgoyette-compat-0330:1.1.1.13 pgoyette-compat-0322:1.1.1.13 pgoyette-compat-0315:1.1.1.13 netbsd-7-1-2-RELEASE:1.1.1.7.2.1 pgoyette-compat:1.1.1.13.0.2 pgoyette-compat-base:1.1.1.13 netbsd-7-1-1-RELEASE:1.1.1.7.2.1 clang-319952:1.1.1.13 matt-nb8-mediatek:1.1.1.12.0.8 matt-nb8-mediatek-base:1.1.1.12 clang-309604:1.1.1.13 perseant-stdc-iso10646:1.1.1.12.0.6 perseant-stdc-iso10646-base:1.1.1.12 netbsd-8:1.1.1.12.0.4 netbsd-8-base:1.1.1.12 prg-localcount2-base3:1.1.1.12 prg-localcount2-base2:1.1.1.12 prg-localcount2-base1:1.1.1.12 prg-localcount2:1.1.1.12.0.2 prg-localcount2-base:1.1.1.12 pgoyette-localcount-20170426:1.1.1.12 bouyer-socketcan-base1:1.1.1.12 pgoyette-localcount-20170320:1.1.1.12 netbsd-7-1:1.1.1.7.2.1.0.6 netbsd-7-1-RELEASE:1.1.1.7.2.1 netbsd-7-1-RC2:1.1.1.7.2.1 clang-294123:1.1.1.12 netbsd-7-nhusb-base-20170116:1.1.1.7.2.1 bouyer-socketcan:1.1.1.11.0.2 bouyer-socketcan-base:1.1.1.11 clang-291444:1.1.1.11 pgoyette-localcount-20170107:1.1.1.10 netbsd-7-1-RC1:1.1.1.7.2.1 pgoyette-localcount-20161104:1.1.1.10 netbsd-7-0-2-RELEASE:1.1.1.7.2.1 localcount-20160914:1.1.1.10 netbsd-7-nhusb:1.1.1.7.2.1.0.4 netbsd-7-nhusb-base:1.1.1.7.2.1 clang-280599:1.1.1.10 pgoyette-localcount-20160806:1.1.1.10 pgoyette-localcount-20160726:1.1.1.10 pgoyette-localcount:1.1.1.10.0.2 pgoyette-localcount-base:1.1.1.10 netbsd-7-0-1-RELEASE:1.1.1.7.2.1 clang-261930:1.1.1.10 netbsd-7-0:1.1.1.7.2.1.0.2 netbsd-7-0-RELEASE:1.1.1.7.2.1 netbsd-7-0-RC3:1.1.1.7.2.1 netbsd-7-0-RC2:1.1.1.7.2.1 netbsd-7-0-RC1:1.1.1.7.2.1 clang-237755:1.1.1.9 clang-232565:1.1.1.9 clang-227398:1.1.1.8 tls-maxphys-base:1.1.1.7 tls-maxphys:1.1.1.7.0.4 netbsd-7:1.1.1.7.0.2 netbsd-7-base:1.1.1.7 clang-215315:1.1.1.7 clang-209886:1.1.1.6 yamt-pagecache:1.1.1.5.0.4 yamt-pagecache-base9:1.1.1.5 tls-earlyentropy:1.1.1.5.0.2 tls-earlyentropy-base:1.1.1.6 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.5 riastradh-drm2-base3:1.1.1.5 clang-202566:1.1.1.5 clang-201163:1.1.1.4 clang-199312:1.1.1.3 clang-198450:1.1.1.2 clang-196603:1.1.1.1 clang-195771:1.1.1.1 LLVM:1.1.1; locks; strict; comment @// @; 1.1 date 2013.11.28.14.14.50; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.50; author joerg; state Exp; branches; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2014.01.05.15.39.05; author joerg; state Exp; branches; next 1.1.1.3; commitid wh3aCSIWykURqWjx; 1.1.1.3 date 2014.01.15.21.26.23; author joerg; state Exp; branches; next 1.1.1.4; commitid NQXlzzA0SPkc5glx; 1.1.1.4 date 2014.02.14.20.07.18; author joerg; state Exp; branches; next 1.1.1.5; commitid annVkZ1sc17rF6px; 1.1.1.5 date 2014.03.04.19.54.26; author joerg; state Exp; branches 1.1.1.5.2.1 1.1.1.5.4.1; next 1.1.1.6; commitid 29z1hJonZISIXprx; 1.1.1.6 date 2014.05.30.18.14.44; author joerg; state Exp; branches; next 1.1.1.7; commitid 8q0kdlBlCn09GACx; 1.1.1.7 date 2014.08.10.17.08.30; author joerg; state Exp; branches 1.1.1.7.2.1 1.1.1.7.4.1; next 1.1.1.8; commitid N85tXAN6Ex9VZPLx; 1.1.1.8 date 2015.01.29.19.57.29; author joerg; state Exp; branches; next 1.1.1.9; commitid mlISSizlPKvepX7y; 1.1.1.9 date 2015.03.18.17.26.36; author joerg; state Exp; branches; next 1.1.1.10; commitid uc5pyJVphALN17ey; 1.1.1.10 date 2016.02.27.22.11.57; author joerg; state Exp; branches 1.1.1.10.2.1; next 1.1.1.11; commitid tIimz3oDlh1NpBWy; 1.1.1.11 date 2017.01.11.10.34.00; author joerg; state Exp; branches 1.1.1.11.2.1; next 1.1.1.12; commitid CNnUNfII1jgNmxBz; 1.1.1.12 date 2017.02.09.17.38.08; author joerg; state Exp; branches; next 1.1.1.13; commitid UxB8JMFWM7xyMiFz; 1.1.1.13 date 2017.08.01.19.35.06; author joerg; state Exp; branches 1.1.1.13.2.1 1.1.1.13.4.1; next 1.1.1.14; commitid pMuDy65V0VicSx1A; 1.1.1.14 date 2018.07.17.18.31.21; author joerg; state Exp; branches; next 1.1.1.15; commitid wDzL46ALjrCZgwKA; 1.1.1.15 date 2019.11.13.22.19.26; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.5.2.1 date 2014.08.10.07.08.09; author tls; state Exp; branches; next ; commitid t01A1TLTYxkpGMLx; 1.1.1.5.4.1 date 2014.03.04.19.54.26; author yamt; state dead; branches; next 1.1.1.5.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.5.4.2 date 2014.05.22.16.18.29; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.7.2.1 date 2015.06.04.20.04.29; author snj; state Exp; branches; next ; commitid yRnjq9fueSo6n9oy; 1.1.1.7.4.1 date 2014.08.10.17.08.30; author tls; state dead; branches; next 1.1.1.7.4.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.7.4.2 date 2014.08.19.23.47.30; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.10.2.1 date 2017.03.20.06.52.40; author pgoyette; state Exp; branches; next ; commitid jjw7cAwgyKq7RfKz; 1.1.1.11.2.1 date 2017.04.21.16.51.39; author bouyer; state Exp; branches; next ; commitid dUG7nkTKALCadqOz; 1.1.1.13.2.1 date 2018.07.28.04.33.21; author pgoyette; state Exp; branches; next ; commitid 1UP1xAIUxv1ZgRLA; 1.1.1.13.4.1 date 2019.06.10.21.45.26; author christos; state Exp; branches; next 1.1.1.13.4.2; commitid jtc8rnCzWiEEHGqB; 1.1.1.13.4.2 date 2020.04.13.07.46.36; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @//===--- SemaChecking.cpp - Extra Semantic Checking -----------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file implements extra semantic analysis beyond what is enforced // by the C type system. // //===----------------------------------------------------------------------===// #include "clang/Sema/SemaInternal.h" #include "clang/AST/ASTContext.h" #include "clang/AST/CharUnits.h" #include "clang/AST/DeclCXX.h" #include "clang/AST/DeclObjC.h" #include "clang/AST/EvaluatedExprVisitor.h" #include "clang/AST/Expr.h" #include "clang/AST/ExprCXX.h" #include "clang/AST/ExprObjC.h" #include "clang/AST/StmtCXX.h" #include "clang/AST/StmtObjC.h" #include "clang/Analysis/Analyses/FormatString.h" #include "clang/Basic/CharInfo.h" #include "clang/Basic/TargetBuiltins.h" #include "clang/Basic/TargetInfo.h" #include "clang/Lex/Preprocessor.h" #include "clang/Sema/Initialization.h" #include "clang/Sema/Lookup.h" #include "clang/Sema/ScopeInfo.h" #include "clang/Sema/Sema.h" #include "llvm/ADT/SmallBitVector.h" #include "llvm/ADT/SmallString.h" #include "llvm/ADT/STLExtras.h" #include "llvm/Support/ConvertUTF.h" #include "llvm/Support/raw_ostream.h" #include using namespace clang; using namespace sema; SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL, unsigned ByteNo) const { return SL->getLocationOfByte(ByteNo, PP.getSourceManager(), PP.getLangOpts(), PP.getTargetInfo()); } /// Checks that a call expression's argument count is the desired number. /// This is useful when doing custom type-checking. Returns true on error. static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) { unsigned argCount = call->getNumArgs(); if (argCount == desiredArgCount) return false; if (argCount < desiredArgCount) return S.Diag(call->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getSourceRange(); // Highlight all the excess arguments. SourceRange range(call->getArg(desiredArgCount)->getLocStart(), call->getArg(argCount - 1)->getLocEnd()); return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getArg(1)->getSourceRange(); } /// Check that the first argument to __builtin_annotation is an integer /// and the second argument is a non-wide string literal. static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; // First argument should be an integer. Expr *ValArg = TheCall->getArg(0); QualType Ty = ValArg->getType(); if (!Ty->isIntegerType()) { S.Diag(ValArg->getLocStart(), diag::err_builtin_annotation_first_arg) << ValArg->getSourceRange(); return true; } // Second argument should be a constant string. Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(StrArg); if (!Literal || !Literal->isAscii()) { S.Diag(StrArg->getLocStart(), diag::err_builtin_annotation_second_arg) << StrArg->getSourceRange(); return true; } TheCall->setType(Ty); return false; } /// Check that the argument to __builtin_addressof is a glvalue, and set the /// result type to the corresponding pointer type. static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 1)) return true; ExprResult Arg(S.Owned(TheCall->getArg(0))); QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getLocStart()); if (ResultType.isNull()) return true; TheCall->setArg(0, Arg.take()); TheCall->setType(ResultType); return false; } ExprResult Sema::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { ExprResult TheCallResult(Owned(TheCall)); // Find out if any arguments are required to be integer constant expressions. unsigned ICEArguments = 0; ASTContext::GetBuiltinTypeError Error; Context.GetBuiltinType(BuiltinID, Error, &ICEArguments); if (Error != ASTContext::GE_None) ICEArguments = 0; // Don't diagnose previously diagnosed errors. // If any arguments are required to be ICE's, check and diagnose. for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) { // Skip arguments not required to be ICE's. if ((ICEArguments & (1 << ArgNo)) == 0) continue; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, ArgNo, Result)) return true; ICEArguments &= ~(1 << ArgNo); } switch (BuiltinID) { case Builtin::BI__builtin___CFStringMakeConstantString: assert(TheCall->getNumArgs() == 1 && "Wrong # arguments to builtin CFStringMakeConstantString"); if (CheckObjCString(TheCall->getArg(0))) return ExprError(); break; case Builtin::BI__builtin_stdarg_start: case Builtin::BI__builtin_va_start: if (SemaBuiltinVAStart(TheCall)) return ExprError(); break; case Builtin::BI__builtin_isgreater: case Builtin::BI__builtin_isgreaterequal: case Builtin::BI__builtin_isless: case Builtin::BI__builtin_islessequal: case Builtin::BI__builtin_islessgreater: case Builtin::BI__builtin_isunordered: if (SemaBuiltinUnorderedCompare(TheCall)) return ExprError(); break; case Builtin::BI__builtin_fpclassify: if (SemaBuiltinFPClassification(TheCall, 6)) return ExprError(); break; case Builtin::BI__builtin_isfinite: case Builtin::BI__builtin_isinf: case Builtin::BI__builtin_isinf_sign: case Builtin::BI__builtin_isnan: case Builtin::BI__builtin_isnormal: if (SemaBuiltinFPClassification(TheCall, 1)) return ExprError(); break; case Builtin::BI__builtin_shufflevector: return SemaBuiltinShuffleVector(TheCall); // TheCall will be freed by the smart pointer here, but that's fine, since // SemaBuiltinShuffleVector guts it, but then doesn't release it. case Builtin::BI__builtin_prefetch: if (SemaBuiltinPrefetch(TheCall)) return ExprError(); break; case Builtin::BI__builtin_object_size: if (SemaBuiltinObjectSize(TheCall)) return ExprError(); break; case Builtin::BI__builtin_longjmp: if (SemaBuiltinLongjmp(TheCall)) return ExprError(); break; case Builtin::BI__builtin_classify_type: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__builtin_constant_p: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: return SemaBuiltinAtomicOverloaded(TheCallResult); #define BUILTIN(ID, TYPE, ATTRS) #define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \ case Builtin::BI##ID: \ return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID); #include "clang/Basic/Builtins.def" case Builtin::BI__builtin_annotation: if (SemaBuiltinAnnotation(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_addressof: if (SemaBuiltinAddressof(*this, TheCall)) return ExprError(); break; } // Since the target specific builtins for each arch overlap, only check those // of the arch we are compiling for. if (BuiltinID >= Builtin::FirstTSBuiltin) { switch (Context.getTargetInfo().getTriple().getArch()) { case llvm::Triple::arm: case llvm::Triple::thumb: if (CheckARMBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::aarch64: if (CheckAArch64BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::mips: case llvm::Triple::mipsel: case llvm::Triple::mips64: case llvm::Triple::mips64el: if (CheckMipsBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; default: break; } } return TheCallResult; } // Get the valid immediate range for the specified NEON type code. static unsigned RFT(unsigned t, bool shift = false) { NeonTypeFlags Type(t); int IsQuad = Type.isQuad(); switch (Type.getEltType()) { case NeonTypeFlags::Int8: case NeonTypeFlags::Poly8: return shift ? 7 : (8 << IsQuad) - 1; case NeonTypeFlags::Int16: case NeonTypeFlags::Poly16: return shift ? 15 : (4 << IsQuad) - 1; case NeonTypeFlags::Int32: return shift ? 31 : (2 << IsQuad) - 1; case NeonTypeFlags::Int64: case NeonTypeFlags::Poly64: return shift ? 63 : (1 << IsQuad) - 1; case NeonTypeFlags::Float16: assert(!shift && "cannot shift float types!"); return (4 << IsQuad) - 1; case NeonTypeFlags::Float32: assert(!shift && "cannot shift float types!"); return (2 << IsQuad) - 1; case NeonTypeFlags::Float64: assert(!shift && "cannot shift float types!"); return (1 << IsQuad) - 1; } llvm_unreachable("Invalid NeonTypeFlag!"); } /// getNeonEltType - Return the QualType corresponding to the elements of /// the vector type specified by the NeonTypeFlags. This is used to check /// the pointer arguments for Neon load/store intrinsics. static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context, bool IsAArch64) { switch (Flags.getEltType()) { case NeonTypeFlags::Int8: return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Int16: return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Int32: return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy; case NeonTypeFlags::Int64: return Flags.isUnsigned() ? Context.UnsignedLongLongTy : Context.LongLongTy; case NeonTypeFlags::Poly8: return IsAArch64 ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Poly16: return IsAArch64 ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Poly64: return Context.UnsignedLongLongTy; case NeonTypeFlags::Float16: return Context.HalfTy; case NeonTypeFlags::Float32: return Context.FloatTy; case NeonTypeFlags::Float64: return Context.DoubleTy; } llvm_unreachable("Invalid NeonTypeFlag!"); } bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; uint64_t mask = 0; unsigned TV = 0; int PtrArgNum = -1; bool HasConstPtr = false; switch (BuiltinID) { #define GET_NEON_AARCH64_OVERLOAD_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_AARCH64_OVERLOAD_CHECK } // For NEON intrinsics which are overloaded on vector element type, validate // the immediate which specifies which variant to emit. unsigned ImmArg = TheCall->getNumArgs() - 1; if (mask) { if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) return true; TV = Result.getLimitedValue(64); if ((TV > 63) || (mask & (1ULL << TV)) == 0) return Diag(TheCall->getLocStart(), diag::err_invalid_neon_type_code) << TheCall->getArg(ImmArg)->getSourceRange(); } if (PtrArgNum >= 0) { // Check that pointer arguments have the specified type. Expr *Arg = TheCall->getArg(PtrArgNum); if (ImplicitCastExpr *ICE = dyn_cast(Arg)) Arg = ICE->getSubExpr(); ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); QualType RHSTy = RHS.get()->getType(); QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, true); if (HasConstPtr) EltTy = EltTy.withConst(); QualType LHSTy = Context.getPointerType(EltTy); AssignConvertType ConvTy; ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); if (RHS.isInvalid()) return true; if (DiagnoseAssignmentResult(ConvTy, Arg->getLocStart(), LHSTy, RHSTy, RHS.get(), AA_Assigning)) return true; } // For NEON intrinsics which take an immediate value as part of the // instruction, range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; #define GET_NEON_AARCH64_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_AARCH64_IMMEDIATE_CHECK } ; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this isntruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > (u + l)) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u + l << TheCall->getArg(i)->getSourceRange(); return false; } bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall) { assert((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_strex) && "unexpected ARM builtin"); bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex; DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // Ensure that we have the proper number of arguments. if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2)) return true; // Inspect the pointer argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1); ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.take(); const PointerType *pointerType = PointerArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // ldrex takes a "const volatile T*" and strex takes a "volatile T*". Our next // task is to insert the appropriate casts into the AST. First work out just // what the appropriate type is. QualType ValType = pointerType->getPointeeType(); QualType AddrType = ValType.getUnqualifiedType().withVolatile(); if (IsLdrex) AddrType.addConst(); // Issue a warning if the cast is dodgy. CastKind CastNeeded = CK_NoOp; if (!AddrType.isAtLeastAsQualifiedAs(ValType)) { CastNeeded = CK_BitCast; Diag(DRE->getLocStart(), diag::ext_typecheck_convert_discards_qualifiers) << PointerArg->getType() << Context.getPointerType(AddrType) << AA_Passing << PointerArg->getSourceRange(); } // Finally, do the cast and replace the argument with the corrected version. AddrType = Context.getPointerType(AddrType); PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.take(); TheCall->setArg(IsLdrex ? 0 : 1, PointerArg); // In general, we allow ints, floats and pointers to be loaded and stored. if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType() && !ValType->isFloatingType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intfltptr) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // But ARM doesn't have instructions to deal with 128-bit versions. if (Context.getTypeSize(ValType) > 64) { Diag(DRE->getLocStart(), diag::err_atomic_exclusive_builtin_pointer_size) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << PointerArg->getSourceRange(); return true; } if (IsLdrex) { TheCall->setType(ValType); return false; } // Initialize the argument to be stored. ExprResult ValArg = TheCall->getArg(0); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, ValType, /*consume*/ false); ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); if (ValArg.isInvalid()) return true; TheCall->setArg(0, ValArg.get()); // __builtin_arm_strex always returns an int. It's marked as such in the .def, // but the custom checker bypasses all default analysis. TheCall->setType(Context.IntTy); return false; } bool Sema::CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; if (BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_strex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall); } uint64_t mask = 0; unsigned TV = 0; int PtrArgNum = -1; bool HasConstPtr = false; switch (BuiltinID) { #define GET_NEON_OVERLOAD_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_OVERLOAD_CHECK } // For NEON intrinsics which are overloaded on vector element type, validate // the immediate which specifies which variant to emit. unsigned ImmArg = TheCall->getNumArgs()-1; if (mask) { if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) return true; TV = Result.getLimitedValue(64); if ((TV > 63) || (mask & (1ULL << TV)) == 0) return Diag(TheCall->getLocStart(), diag::err_invalid_neon_type_code) << TheCall->getArg(ImmArg)->getSourceRange(); } if (PtrArgNum >= 0) { // Check that pointer arguments have the specified type. Expr *Arg = TheCall->getArg(PtrArgNum); if (ImplicitCastExpr *ICE = dyn_cast(Arg)) Arg = ICE->getSubExpr(); ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); QualType RHSTy = RHS.get()->getType(); QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, false); if (HasConstPtr) EltTy = EltTy.withConst(); QualType LHSTy = Context.getPointerType(EltTy); AssignConvertType ConvTy; ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); if (RHS.isInvalid()) return true; if (DiagnoseAssignmentResult(ConvTy, Arg->getLocStart(), LHSTy, RHSTy, RHS.get(), AA_Assigning)) return true; } // For NEON intrinsics which take an immediate value as part of the // instruction, range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case ARM::BI__builtin_arm_ssat: i = 1; l = 1; u = 31; break; case ARM::BI__builtin_arm_usat: i = 1; u = 31; break; case ARM::BI__builtin_arm_vcvtr_f: case ARM::BI__builtin_arm_vcvtr_d: i = 1; u = 1; break; case ARM::BI__builtin_arm_dmb: case ARM::BI__builtin_arm_dsb: l = 0; u = 15; break; #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_IMMEDIATE_CHECK }; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this isntruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > (u + l)) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u+l << TheCall->getArg(i)->getSourceRange(); // FIXME: VFP Intrinsics should error if VFP not present. return false; } bool Sema::CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break; case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break; case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break; case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break; }; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this instruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > u) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u << TheCall->getArg(i)->getSourceRange(); return false; } /// Given a FunctionDecl's FormatAttr, attempts to populate the FomatStringInfo /// parameter with the FormatAttr's correct format_idx and firstDataArg. /// Returns true when the format fits the function and the FormatStringInfo has /// been populated. bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, FormatStringInfo *FSI) { FSI->HasVAListArg = Format->getFirstArg() == 0; FSI->FormatIdx = Format->getFormatIdx() - 1; FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1; // The way the format attribute works in GCC, the implicit this argument // of member functions is counted. However, it doesn't appear in our own // lists, so decrement format_idx in that case. if (IsCXXMember) { if(FSI->FormatIdx == 0) return false; --FSI->FormatIdx; if (FSI->FirstDataArg != 0) --FSI->FirstDataArg; } return true; } /// Handles the checks for format strings, non-POD arguments to vararg /// functions, and NULL arguments passed to non-NULL parameters. void Sema::checkCall(NamedDecl *FDecl, ArrayRef Args, unsigned NumProtoArgs, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { // FIXME: We should check as much as we can in the template definition. if (CurContext->isDependentContext()) return; // Printf and scanf checking. llvm::SmallBitVector CheckedVarArgs; if (FDecl) { for (specific_attr_iterator I = FDecl->specific_attr_begin(), E = FDecl->specific_attr_end(); I != E; ++I) { // Only create vector if there are format attributes. CheckedVarArgs.resize(Args.size()); CheckFormatArguments(*I, Args, IsMemberFunction, CallType, Loc, Range, CheckedVarArgs); } } // Refuse POD arguments that weren't caught by the format string // checks above. if (CallType != VariadicDoesNotApply) { for (unsigned ArgIdx = NumProtoArgs; ArgIdx < Args.size(); ++ArgIdx) { // Args[ArgIdx] can be null in malformed code. if (const Expr *Arg = Args[ArgIdx]) { if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx]) checkVariadicArgument(Arg, CallType); } } } if (FDecl) { for (specific_attr_iterator I = FDecl->specific_attr_begin(), E = FDecl->specific_attr_end(); I != E; ++I) CheckNonNullArguments(*I, Args.data(), Loc); // Type safety checking. for (specific_attr_iterator i = FDecl->specific_attr_begin(), e = FDecl->specific_attr_end(); i != e; ++i) { CheckArgumentWithTypeTag(*i, Args.data()); } } } /// CheckConstructorCall - Check a constructor call for correctness and safety /// properties not enforced by the C type system. void Sema::CheckConstructorCall(FunctionDecl *FDecl, ArrayRef Args, const FunctionProtoType *Proto, SourceLocation Loc) { VariadicCallType CallType = Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply; checkCall(FDecl, Args, Proto->getNumArgs(), /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); } /// CheckFunctionCall - Check a direct function call for various correctness /// and safety properties not strictly enforced by the C type system. bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { bool IsMemberOperatorCall = isa(TheCall) && isa(FDecl); bool IsMemberFunction = isa(TheCall) || IsMemberOperatorCall; VariadicCallType CallType = getVariadicCallType(FDecl, Proto, TheCall->getCallee()); unsigned NumProtoArgs = Proto ? Proto->getNumArgs() : 0; Expr** Args = TheCall->getArgs(); unsigned NumArgs = TheCall->getNumArgs(); if (IsMemberOperatorCall) { // If this is a call to a member operator, hide the first argument // from checkCall. // FIXME: Our choice of AST representation here is less than ideal. ++Args; --NumArgs; } checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumProtoArgs, IsMemberFunction, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); IdentifierInfo *FnInfo = FDecl->getIdentifier(); // None of the checks below are needed for functions that don't have // simple names (e.g., C++ conversion functions). if (!FnInfo) return false; unsigned CMId = FDecl->getMemoryFunctionKind(); if (CMId == 0) return false; // Handle memory setting and copying functions. if (CMId == Builtin::BIstrlcpy || CMId == Builtin::BIstrlcat) CheckStrlcpycatArguments(TheCall, FnInfo); else if (CMId == Builtin::BIstrncat) CheckStrncatArguments(TheCall, FnInfo); else CheckMemaccessArguments(TheCall, CMId, FnInfo); return false; } bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac, ArrayRef Args) { VariadicCallType CallType = Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply; checkCall(Method, Args, Method->param_size(), /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), CallType); return false; } bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { const VarDecl *V = dyn_cast(NDecl); if (!V) return false; QualType Ty = V->getType(); if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType()) return false; VariadicCallType CallType; if (!Proto || !Proto->isVariadic()) { CallType = VariadicDoesNotApply; } else if (Ty->isBlockPointerType()) { CallType = VariadicBlock; } else { // Ty->isFunctionPointerType() CallType = VariadicFunction; } unsigned NumProtoArgs = Proto ? Proto->getNumArgs() : 0; checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumProtoArgs, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } /// Checks function calls when a FunctionDecl or a NamedDecl is not available, /// such as function pointers returned from functions. bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) { VariadicCallType CallType = getVariadicCallType(/*FDecl=*/0, Proto, TheCall->getCallee()); unsigned NumProtoArgs = Proto ? Proto->getNumArgs() : 0; checkCall(/*FDecl=*/0, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumProtoArgs, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult, AtomicExpr::AtomicOp Op) { CallExpr *TheCall = cast(TheCallResult.get()); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // All these operations take one of the following forms: enum { // C __c11_atomic_init(A *, C) Init, // C __c11_atomic_load(A *, int) Load, // void __atomic_load(A *, CP, int) Copy, // C __c11_atomic_add(A *, M, int) Arithmetic, // C __atomic_exchange_n(A *, CP, int) Xchg, // void __atomic_exchange(A *, C *, CP, int) GNUXchg, // bool __c11_atomic_compare_exchange_strong(A *, C *, CP, int, int) C11CmpXchg, // bool __atomic_compare_exchange(A *, C *, CP, bool, int, int) GNUCmpXchg } Form = Init; const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 4, 5, 6 }; const unsigned NumVals[] = { 1, 0, 1, 1, 1, 2, 2, 3 }; // where: // C is an appropriate type, // A is volatile _Atomic(C) for __c11 builtins and is C for GNU builtins, // CP is C for __c11 builtins and GNU _n builtins and is C * otherwise, // M is C if C is an integer, and ptrdiff_t if C is a pointer, and // the int parameters are for orderings. assert(AtomicExpr::AO__c11_atomic_init == 0 && AtomicExpr::AO__c11_atomic_fetch_xor + 1 == AtomicExpr::AO__atomic_load && "need to update code for modified C11 atomics"); bool IsC11 = Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor; bool IsN = Op == AtomicExpr::AO__atomic_load_n || Op == AtomicExpr::AO__atomic_store_n || Op == AtomicExpr::AO__atomic_exchange_n || Op == AtomicExpr::AO__atomic_compare_exchange_n; bool IsAddSub = false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: Form = Init; break; case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: Form = Load; break; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_load: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: Form = Copy; break; case AtomicExpr::AO__c11_atomic_fetch_add: case AtomicExpr::AO__c11_atomic_fetch_sub: case AtomicExpr::AO__atomic_fetch_add: case AtomicExpr::AO__atomic_fetch_sub: case AtomicExpr::AO__atomic_add_fetch: case AtomicExpr::AO__atomic_sub_fetch: IsAddSub = true; // Fall through. case AtomicExpr::AO__c11_atomic_fetch_and: case AtomicExpr::AO__c11_atomic_fetch_or: case AtomicExpr::AO__c11_atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_and: case AtomicExpr::AO__atomic_fetch_or: case AtomicExpr::AO__atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_nand: case AtomicExpr::AO__atomic_and_fetch: case AtomicExpr::AO__atomic_or_fetch: case AtomicExpr::AO__atomic_xor_fetch: case AtomicExpr::AO__atomic_nand_fetch: Form = Arithmetic; break; case AtomicExpr::AO__c11_atomic_exchange: case AtomicExpr::AO__atomic_exchange_n: Form = Xchg; break; case AtomicExpr::AO__atomic_exchange: Form = GNUXchg; break; case AtomicExpr::AO__c11_atomic_compare_exchange_strong: case AtomicExpr::AO__c11_atomic_compare_exchange_weak: Form = C11CmpXchg; break; case AtomicExpr::AO__atomic_compare_exchange: case AtomicExpr::AO__atomic_compare_exchange_n: Form = GNUCmpXchg; break; } // Check we have the right number of arguments. if (TheCall->getNumArgs() < NumArgs[Form]) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } else if (TheCall->getNumArgs() > NumArgs[Form]) { Diag(TheCall->getArg(NumArgs[Form])->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic operation. Expr *Ptr = TheCall->getArg(0); Ptr = DefaultFunctionArrayLvalueConversion(Ptr).get(); const PointerType *pointerType = Ptr->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // For a __c11 builtin, this should be a pointer to an _Atomic type. QualType AtomTy = pointerType->getPointeeType(); // 'A' QualType ValType = AtomTy; // 'C' if (IsC11) { if (!AtomTy->isAtomicType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (AtomTy.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_non_const_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } ValType = AtomTy->getAs()->getValueType(); } // For an arithmetic operation, the implied arithmetic must be well-formed. if (Form == Arithmetic) { // gcc does not enforce these rules for GNU atomics, but we do so for sanity. if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsAddSub && !ValType->isIntegerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_bitwise_needs_atomic_int) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } } else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) { // For __atomic_*_n operations, the value type must be a scalar integral or // pointer type which is 1, 2, 4, 8 or 16 bytes in length. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) && !AtomTy->isScalarType()) { // For GNU atomics, require a trivially-copyable type. This is not part of // the GNU atomics specification, but we enforce it for sanity. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_trivial_copy) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // FIXME: For any builtin other than a load, the ValType must not be // const-qualified. switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: // FIXME: Can this happen? By this point, ValType should be known // to be trivially copyable. Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << Ptr->getSourceRange(); return ExprError(); } QualType ResultType = ValType; if (Form == Copy || Form == GNUXchg || Form == Init) ResultType = Context.VoidTy; else if (Form == C11CmpXchg || Form == GNUCmpXchg) ResultType = Context.BoolTy; // The type of a parameter passed 'by value'. In the GNU atomics, such // arguments are actually passed as pointers. QualType ByValType = ValType; // 'CP' if (!IsC11 && !IsN) ByValType = Ptr->getType(); // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 1; i != NumArgs[Form]; ++i) { QualType Ty; if (i < NumVals[Form] + 1) { switch (i) { case 1: // The second argument is the non-atomic operand. For arithmetic, this // is always passed by value, and for a compare_exchange it is always // passed by address. For the rest, GNU uses by-address and C11 uses // by-value. assert(Form != Load); if (Form == Init || (Form == Arithmetic && ValType->isIntegerType())) Ty = ValType; else if (Form == Copy || Form == Xchg) Ty = ByValType; else if (Form == Arithmetic) Ty = Context.getPointerDiffType(); else Ty = Context.getPointerType(ValType.getUnqualifiedType()); break; case 2: // The third argument to compare_exchange / GNU exchange is a // (pointer to a) desired value. Ty = ByValType; break; case 3: // The fourth argument to GNU compare_exchange is a 'weak' flag. Ty = Context.BoolTy; break; } } else { // The order(s) are always converted to int. Ty = Context.IntTy; } InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, Ty, false); ExprResult Arg = TheCall->getArg(i); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); } // Permute the arguments into a 'consistent' order. SmallVector SubExprs; SubExprs.push_back(Ptr); switch (Form) { case Init: // Note, AtomicExpr::getVal1() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case Load: SubExprs.push_back(TheCall->getArg(1)); // Order break; case Copy: case Arithmetic: case Xchg: SubExprs.push_back(TheCall->getArg(2)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case GNUXchg: // Note, AtomicExpr::getVal2() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case C11CmpXchg: SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(4)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case GNUCmpXchg: SubExprs.push_back(TheCall->getArg(4)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(5)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 SubExprs.push_back(TheCall->getArg(3)); // Weak break; } AtomicExpr *AE = new (Context) AtomicExpr(TheCall->getCallee()->getLocStart(), SubExprs, ResultType, Op, TheCall->getRParenLoc()); if ((Op == AtomicExpr::AO__c11_atomic_load || (Op == AtomicExpr::AO__c11_atomic_store)) && Context.AtomicUsesUnsupportedLibcall(AE)) Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load) ? 0 : 1); return Owned(AE); } /// checkBuiltinArgument - Given a call to a builtin function, perform /// normal type-checking on the given argument, updating the call in /// place. This is useful when a builtin function requires custom /// type-checking for some of its arguments but not necessarily all of /// them. /// /// Returns true on error. static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) { FunctionDecl *Fn = E->getDirectCallee(); assert(Fn && "builtin call without direct callee!"); ParmVarDecl *Param = Fn->getParamDecl(ArgIndex); InitializedEntity Entity = InitializedEntity::InitializeParameter(S.Context, Param); ExprResult Arg = E->getArg(0); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; E->setArg(ArgIndex, Arg.take()); return false; } /// SemaBuiltinAtomicOverloaded - We have a call to a function like /// __sync_fetch_and_add, which is an overloaded function based on the pointer /// type of its first argument. The main ActOnCallExpr routines have already /// promoted the types of arguments because all of these calls are prototyped as /// void(...). /// /// This function goes through and does final semantic checking for these /// builtins, ExprResult Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) { CallExpr *TheCall = (CallExpr *)TheCallResult.get(); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); // Ensure that we have at least one argument to do type inference from. if (TheCall->getNumArgs() < 1) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. // FIXME: We don't allow floating point scalars as input. Expr *FirstArg = TheCall->getArg(0); ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg); if (FirstArgResult.isInvalid()) return ExprError(); FirstArg = FirstArgResult.take(); TheCall->setArg(0, FirstArg); const PointerType *pointerType = FirstArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } QualType ValType = pointerType->getPointeeType(); if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intptr) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << FirstArg->getSourceRange(); return ExprError(); } // Strip any qualifiers off ValType. ValType = ValType.getUnqualifiedType(); // The majority of builtins return a value, but a few have special return // types, so allow them to override appropriately below. QualType ResultType = ValType; // We need to figure out which concrete builtin this maps onto. For example, // __sync_fetch_and_add with a 2 byte object turns into // __sync_fetch_and_add_2. #define BUILTIN_ROW(x) \ { Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \ Builtin::BI##x##_8, Builtin::BI##x##_16 } static const unsigned BuiltinIndices[][5] = { BUILTIN_ROW(__sync_fetch_and_add), BUILTIN_ROW(__sync_fetch_and_sub), BUILTIN_ROW(__sync_fetch_and_or), BUILTIN_ROW(__sync_fetch_and_and), BUILTIN_ROW(__sync_fetch_and_xor), BUILTIN_ROW(__sync_add_and_fetch), BUILTIN_ROW(__sync_sub_and_fetch), BUILTIN_ROW(__sync_and_and_fetch), BUILTIN_ROW(__sync_or_and_fetch), BUILTIN_ROW(__sync_xor_and_fetch), BUILTIN_ROW(__sync_val_compare_and_swap), BUILTIN_ROW(__sync_bool_compare_and_swap), BUILTIN_ROW(__sync_lock_test_and_set), BUILTIN_ROW(__sync_lock_release), BUILTIN_ROW(__sync_swap) }; #undef BUILTIN_ROW // Determine the index of the size. unsigned SizeIndex; switch (Context.getTypeSizeInChars(ValType).getQuantity()) { case 1: SizeIndex = 0; break; case 2: SizeIndex = 1; break; case 4: SizeIndex = 2; break; case 8: SizeIndex = 3; break; case 16: SizeIndex = 4; break; default: Diag(DRE->getLocStart(), diag::err_atomic_builtin_pointer_size) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } // Each of these builtins has one pointer argument, followed by some number of // values (0, 1 or 2) followed by a potentially empty varags list of stuff // that we ignore. Find out which row of BuiltinIndices to read from as well // as the number of fixed args. unsigned BuiltinID = FDecl->getBuiltinID(); unsigned BuiltinIndex, NumFixed = 1; switch (BuiltinID) { default: llvm_unreachable("Unknown overloaded atomic builtin!"); case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: BuiltinIndex = 0; break; case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: BuiltinIndex = 1; break; case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: BuiltinIndex = 2; break; case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: BuiltinIndex = 3; break; case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: BuiltinIndex = 4; break; case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: BuiltinIndex = 5; break; case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: BuiltinIndex = 6; break; case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: BuiltinIndex = 7; break; case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: BuiltinIndex = 8; break; case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: BuiltinIndex = 9; break; case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: BuiltinIndex = 10; NumFixed = 2; break; case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: BuiltinIndex = 11; NumFixed = 2; ResultType = Context.BoolTy; break; case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: BuiltinIndex = 12; break; case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: BuiltinIndex = 13; NumFixed = 0; ResultType = Context.VoidTy; break; case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: BuiltinIndex = 14; break; } // Now that we know how many fixed arguments we expect, first check that we // have at least that many. if (TheCall->getNumArgs() < 1+NumFixed) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1+NumFixed << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Get the decl for the concrete builtin from this, we can tell what the // concrete integer type we should convert to is. unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex]; const char *NewBuiltinName = Context.BuiltinInfo.GetName(NewBuiltinID); FunctionDecl *NewBuiltinDecl; if (NewBuiltinID == BuiltinID) NewBuiltinDecl = FDecl; else { // Perform builtin lookup to avoid redeclaring it. DeclarationName DN(&Context.Idents.get(NewBuiltinName)); LookupResult Res(*this, DN, DRE->getLocStart(), LookupOrdinaryName); LookupName(Res, TUScope, /*AllowBuiltinCreation=*/true); assert(Res.getFoundDecl()); NewBuiltinDecl = dyn_cast(Res.getFoundDecl()); if (NewBuiltinDecl == 0) return ExprError(); } // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 0; i != NumFixed; ++i) { ExprResult Arg = TheCall->getArg(i+1); // GCC does an implicit conversion to the pointer or integer ValType. This // can fail in some cases (1i -> int**), check for this error case now. // Initialize the argument. InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, ValType, /*consume*/ false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return ExprError(); // Okay, we have something that *can* be converted to the right type. Check // to see if there is a potentially weird extension going on here. This can // happen when you do an atomic operation on something like an char* and // pass in 42. The 42 gets converted to char. This is even more strange // for things like 45.123 -> char, etc. // FIXME: Do this check. TheCall->setArg(i+1, Arg.take()); } ASTContext& Context = this->getASTContext(); // Create a new DeclRefExpr to refer to the new decl. DeclRefExpr* NewDRE = DeclRefExpr::Create( Context, DRE->getQualifierLoc(), SourceLocation(), NewBuiltinDecl, /*enclosing*/ false, DRE->getLocation(), Context.BuiltinFnTy, DRE->getValueKind()); // Set the callee in the CallExpr. // FIXME: This loses syntactic information. QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType()); ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy, CK_BuiltinFnToFnPtr); TheCall->setCallee(PromotedCall.take()); // Change the result type of the call to match the original value type. This // is arbitrary, but the codegen for these builtins ins design to handle it // gracefully. TheCall->setType(ResultType); return TheCallResult; } /// CheckObjCString - Checks that the argument to the builtin /// CFString constructor is correct /// Note: It might also make sense to do the UTF-16 conversion here (would /// simplify the backend). bool Sema::CheckObjCString(Expr *Arg) { Arg = Arg->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(Arg); if (!Literal || !Literal->isAscii()) { Diag(Arg->getLocStart(), diag::err_cfstring_literal_not_string_constant) << Arg->getSourceRange(); return true; } if (Literal->containsNonAsciiOrNull()) { StringRef String = Literal->getString(); unsigned NumBytes = String.size(); SmallVector ToBuf(NumBytes); const UTF8 *FromPtr = (const UTF8 *)String.data(); UTF16 *ToPtr = &ToBuf[0]; ConversionResult Result = ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, ToPtr + NumBytes, strictConversion); // Check for conversion failure. if (Result != conversionOK) Diag(Arg->getLocStart(), diag::warn_cfstring_truncated) << Arg->getSourceRange(); } return false; } /// SemaBuiltinVAStart - Check the arguments to __builtin_va_start for validity. /// Emit an error and return true on failure, return false on success. bool Sema::SemaBuiltinVAStart(CallExpr *TheCall) { Expr *Fn = TheCall->getCallee(); if (TheCall->getNumArgs() > 2) { Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << Fn->getSourceRange() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); return true; } if (TheCall->getNumArgs() < 2) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs(); } // Type-check the first argument normally. if (checkBuiltinArgument(*this, TheCall, 0)) return true; // Determine whether the current function is variadic or not. BlockScopeInfo *CurBlock = getCurBlock(); bool isVariadic; if (CurBlock) isVariadic = CurBlock->TheDecl->isVariadic(); else if (FunctionDecl *FD = getCurFunctionDecl()) isVariadic = FD->isVariadic(); else isVariadic = getCurMethodDecl()->isVariadic(); if (!isVariadic) { Diag(Fn->getLocStart(), diag::err_va_start_used_in_non_variadic_function); return true; } // Verify that the second argument to the builtin is the last argument of the // current function or method. bool SecondArgIsLastNamedArgument = false; const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts(); // These are valid if SecondArgIsLastNamedArgument is false after the next // block. QualType Type; SourceLocation ParamLoc; if (const DeclRefExpr *DR = dyn_cast(Arg)) { if (const ParmVarDecl *PV = dyn_cast(DR->getDecl())) { // FIXME: This isn't correct for methods (results in bogus warning). // Get the last formal in the current function. const ParmVarDecl *LastArg; if (CurBlock) LastArg = *(CurBlock->TheDecl->param_end()-1); else if (FunctionDecl *FD = getCurFunctionDecl()) LastArg = *(FD->param_end()-1); else LastArg = *(getCurMethodDecl()->param_end()-1); SecondArgIsLastNamedArgument = PV == LastArg; Type = PV->getType(); ParamLoc = PV->getLocation(); } } if (!SecondArgIsLastNamedArgument) Diag(TheCall->getArg(1)->getLocStart(), diag::warn_second_parameter_of_va_start_not_last_named_argument); else if (Type->isReferenceType()) { Diag(Arg->getLocStart(), diag::warn_va_start_of_reference_type_is_undefined); Diag(ParamLoc, diag::note_parameter_type) << Type; } TheCall->setType(Context.VoidTy); return false; } /// SemaBuiltinUnorderedCompare - Handle functions like __builtin_isgreater and /// friends. This is declared to take (...), so we have to check everything. bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << 2 << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > 2) return Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); ExprResult OrigArg0 = TheCall->getArg(0); ExprResult OrigArg1 = TheCall->getArg(1); // Do standard promotions between the two arguments, returning their common // type. QualType Res = UsualArithmeticConversions(OrigArg0, OrigArg1, false); if (OrigArg0.isInvalid() || OrigArg1.isInvalid()) return true; // Make sure any conversions are pushed back into the call; this is // type safe since unordered compare builtins are declared as "_Bool // foo(...)". TheCall->setArg(0, OrigArg0.get()); TheCall->setArg(1, OrigArg1.get()); if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent()) return false; // If the common type isn't a real floating type, then the arguments were // invalid for this operation. if (Res.isNull() || !Res->isRealFloatingType()) return Diag(OrigArg0.get()->getLocStart(), diag::err_typecheck_call_invalid_ordered_compare) << OrigArg0.get()->getType() << OrigArg1.get()->getType() << SourceRange(OrigArg0.get()->getLocStart(), OrigArg1.get()->getLocEnd()); return false; } /// SemaBuiltinSemaBuiltinFPClassification - Handle functions like /// __builtin_isnan and friends. This is declared to take (...), so we have /// to check everything. We expect the last argument to be a floating point /// value. bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) { if (TheCall->getNumArgs() < NumArgs) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > NumArgs) return Diag(TheCall->getArg(NumArgs)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << NumArgs << TheCall->getNumArgs() << SourceRange(TheCall->getArg(NumArgs)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); Expr *OrigArg = TheCall->getArg(NumArgs-1); if (OrigArg->isTypeDependent()) return false; // This operation requires a non-_Complex floating-point number. if (!OrigArg->getType()->isRealFloatingType()) return Diag(OrigArg->getLocStart(), diag::err_typecheck_call_invalid_unary_fp) << OrigArg->getType() << OrigArg->getSourceRange(); // If this is an implicit conversion from float -> double, remove it. if (ImplicitCastExpr *Cast = dyn_cast(OrigArg)) { Expr *CastArg = Cast->getSubExpr(); if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) { assert(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) && "promotion from float to double is the only expected cast here"); Cast->setSubExpr(0); TheCall->setArg(NumArgs-1, CastArg); } } return false; } /// SemaBuiltinShuffleVector - Handle __builtin_shufflevector. // This is declared to take (...), so we have to check everything. ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return ExprError(Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << TheCall->getSourceRange()); // Determine which of the following types of shufflevector we're checking: // 1) unary, vector mask: (lhs, mask) // 2) binary, vector mask: (lhs, rhs, mask) // 3) binary, scalar mask: (lhs, rhs, index, ..., index) QualType resType = TheCall->getArg(0)->getType(); unsigned numElements = 0; if (!TheCall->getArg(0)->isTypeDependent() && !TheCall->getArg(1)->isTypeDependent()) { QualType LHSType = TheCall->getArg(0)->getType(); QualType RHSType = TheCall->getArg(1)->getType(); if (!LHSType->isVectorType() || !RHSType->isVectorType()) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_non_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); numElements = LHSType->getAs()->getNumElements(); unsigned numResElements = TheCall->getNumArgs() - 2; // Check to see if we have a call with 2 vector arguments, the unary shuffle // with mask. If so, verify that RHS is an integer vector type with the // same number of elts as lhs. if (TheCall->getNumArgs() == 2) { if (!RHSType->hasIntegerRepresentation() || RHSType->getAs()->getNumElements() != numElements) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(1)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) { return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (numElements != numResElements) { QualType eltType = LHSType->getAs()->getElementType(); resType = Context.getVectorType(eltType, numResElements, VectorType::GenericVector); } } for (unsigned i = 2; i < TheCall->getNumArgs(); i++) { if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) continue; llvm::APSInt Result(32); if (!TheCall->getArg(i)->isIntegerConstantExpr(Result, Context)) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_nonconstant_argument) << TheCall->getArg(i)->getSourceRange()); // Allow -1 which will be translated to undef in the IR. if (Result.isSigned() && Result.isAllOnesValue()) continue; if (Result.getActiveBits() > 64 || Result.getZExtValue() >= numElements*2) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_argument_too_large) << TheCall->getArg(i)->getSourceRange()); } SmallVector exprs; for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) { exprs.push_back(TheCall->getArg(i)); TheCall->setArg(i, 0); } return Owned(new (Context) ShuffleVectorExpr(Context, exprs, resType, TheCall->getCallee()->getLocStart(), TheCall->getRParenLoc())); } /// SemaConvertVectorExpr - Handle __builtin_convertvector ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, SourceLocation BuiltinLoc, SourceLocation RParenLoc) { ExprValueKind VK = VK_RValue; ExprObjectKind OK = OK_Ordinary; QualType DstTy = TInfo->getType(); QualType SrcTy = E->getType(); if (!SrcTy->isVectorType() && !SrcTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector) << E->getSourceRange()); if (!DstTy->isVectorType() && !DstTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector_type)); if (!SrcTy->isDependentType() && !DstTy->isDependentType()) { unsigned SrcElts = SrcTy->getAs()->getNumElements(); unsigned DstElts = DstTy->getAs()->getNumElements(); if (SrcElts != DstElts) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_incompatible_vector) << E->getSourceRange()); } return Owned(new (Context) ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc)); } /// SemaBuiltinPrefetch - Handle __builtin_prefetch. // This is declared to take (const void*, ...) and can take two // optional constant int args. bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs > 3) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange(); // Argument 0 is checked for us and the remaining arguments must be // constant integers. for (unsigned i = 1; i != NumArgs; ++i) { Expr *Arg = TheCall->getArg(i); // We can't check the value of a dependent argument. if (Arg->isTypeDependent() || Arg->isValueDependent()) continue; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // FIXME: gcc issues a warning and rewrites these to 0. These // seems especially odd for the third argument since the default // is 3. if (i == 1) { if (Result.getLimitedValue() > 1) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "1" << Arg->getSourceRange(); } else { if (Result.getLimitedValue() > 3) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << Arg->getSourceRange(); } } return false; } /// SemaBuiltinConstantArg - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression. bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, llvm::APSInt &Result) { Expr *Arg = TheCall->getArg(ArgNum); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; if (!Arg->isIntegerConstantExpr(Result, Context)) return Diag(TheCall->getLocStart(), diag::err_constant_integer_arg_type) << FDecl->getDeclName() << Arg->getSourceRange(); return false; } /// SemaBuiltinObjectSize - Handle __builtin_object_size(void *ptr, /// int type). This simply type checks that type is one of the defined /// constants (0-3). // For compatibility check 0-3, llvm only handles 0 and 2. bool Sema::SemaBuiltinObjectSize(CallExpr *TheCall) { llvm::APSInt Result; // We can't check the value of a dependent argument. if (TheCall->getArg(1)->isTypeDependent() || TheCall->getArg(1)->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; Expr *Arg = TheCall->getArg(1); if (Result.getSExtValue() < 0 || Result.getSExtValue() > 3) { return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << SourceRange(Arg->getLocStart(), Arg->getLocEnd()); } return false; } /// SemaBuiltinLongjmp - Handle __builtin_longjmp(void *env[5], int val). /// This checks that val is a constant 1. bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(1); llvm::APSInt Result; // TODO: This is less than ideal. Overload this to take a value. if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (Result != 1) return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_invalid_val) << SourceRange(Arg->getLocStart(), Arg->getLocEnd()); return false; } namespace { enum StringLiteralCheckType { SLCT_NotALiteral, SLCT_UncheckedLiteral, SLCT_CheckedLiteral }; } // Determine if an expression is a string literal or constant string. // If this function returns false on the arguments to a function expecting a // format string, we will usually need to emit a warning. // True string literals are then checked by CheckFormatString. static StringLiteralCheckType checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, Sema::VariadicCallType CallType, bool InFunctionCall, llvm::SmallBitVector &CheckedVarArgs) { tryAgain: if (E->isTypeDependent() || E->isValueDependent()) return SLCT_NotALiteral; E = E->IgnoreParenCasts(); if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) // Technically -Wformat-nonliteral does not warn about this case. // The behavior of printf and friends in this case is implementation // dependent. Ideally if the format string cannot be null then // it should have a 'nonnull' attribute in the function prototype. return SLCT_UncheckedLiteral; switch (E->getStmtClass()) { case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { // The expression is a literal if both sub-expressions were, and it was // completely checked only if both sub-expressions were checked. const AbstractConditionalOperator *C = cast(E); StringLiteralCheckType Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); if (Left == SLCT_NotALiteral) return SLCT_NotALiteral; StringLiteralCheckType Right = checkFormatStringExpr(S, C->getFalseExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); return Left < Right ? Left : Right; } case Stmt::ImplicitCastExprClass: { E = cast(E)->getSubExpr(); goto tryAgain; } case Stmt::OpaqueValueExprClass: if (const Expr *src = cast(E)->getSourceExpr()) { E = src; goto tryAgain; } return SLCT_NotALiteral; case Stmt::PredefinedExprClass: // While __func__, etc., are technically not string literals, they // cannot contain format specifiers and thus are not a security // liability. return SLCT_UncheckedLiteral; case Stmt::DeclRefExprClass: { const DeclRefExpr *DR = cast(E); // As an exception, do not flag errors for variables binding to // const string literals. if (const VarDecl *VD = dyn_cast(DR->getDecl())) { bool isConstant = false; QualType T = DR->getType(); if (const ArrayType *AT = S.Context.getAsArrayType(T)) { isConstant = AT->getElementType().isConstant(S.Context); } else if (const PointerType *PT = T->getAs()) { isConstant = T.isConstant(S.Context) && PT->getPointeeType().isConstant(S.Context); } else if (T->isObjCObjectPointerType()) { // In ObjC, there is usually no "const ObjectPointer" type, // so don't check if the pointee type is constant. isConstant = T.isConstant(S.Context); } if (isConstant) { if (const Expr *Init = VD->getAnyInitializer()) { // Look through initializers like const char c[] = { "foo" } if (const InitListExpr *InitList = dyn_cast(Init)) { if (InitList->isStringLiteralInit()) Init = InitList->getInit(0)->IgnoreParenImpCasts(); } return checkFormatStringExpr(S, Init, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*InFunctionCall*/false, CheckedVarArgs); } } // For vprintf* functions (i.e., HasVAListArg==true), we add a // special check to see if the format string is a function parameter // of the function calling the printf function. If the function // has an attribute indicating it is a printf-like function, then we // should suppress warnings concerning non-literals being used in a call // to a vprintf function. For example: // // void // logmessage(char const *fmt __attribute__ (format (printf, 1, 2)), ...){ // va_list ap; // va_start(ap, fmt); // vprintf(fmt, ap); // Do NOT emit a warning about "fmt". // ... // } if (HasVAListArg) { if (const ParmVarDecl *PV = dyn_cast(VD)) { if (const NamedDecl *ND = dyn_cast(PV->getDeclContext())) { int PVIndex = PV->getFunctionScopeIndex() + 1; for (specific_attr_iterator i = ND->specific_attr_begin(), e = ND->specific_attr_end(); i != e ; ++i) { FormatAttr *PVFormat = *i; // adjust for implicit parameter if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) ++PVIndex; // We also check if the formats are compatible. // We can't pass a 'scanf' string to a 'printf' function. if (PVIndex == PVFormat->getFormatIdx() && Type == S.GetFormatStringType(PVFormat)) return SLCT_UncheckedLiteral; } } } } } return SLCT_NotALiteral; } case Stmt::CallExprClass: case Stmt::CXXMemberCallExprClass: { const CallExpr *CE = cast(E); if (const NamedDecl *ND = dyn_cast_or_null(CE->getCalleeDecl())) { if (const FormatArgAttr *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) --ArgIndex; const Expr *Arg = CE->getArg(ArgIndex - 1); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } else if (const FunctionDecl *FD = dyn_cast(ND)) { unsigned BuiltinID = FD->getBuiltinID(); if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString || BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) { const Expr *Arg = CE->getArg(0); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } } } return SLCT_NotALiteral; } case Stmt::ObjCMessageExprClass: { const ObjCMessageExpr *ME = cast(E); if (const ObjCMethodDecl *MDecl = ME->getMethodDecl()) { if (const NamedDecl *ND = dyn_cast(MDecl)) { if (const FormatArgAttr *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); if (ArgIndex <= ME->getNumArgs()) { const Expr *Arg = ME->getArg(ArgIndex-1); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } } } } return SLCT_NotALiteral; } case Stmt::ObjCStringLiteralClass: case Stmt::StringLiteralClass: { const StringLiteral *StrE = NULL; if (const ObjCStringLiteral *ObjCFExpr = dyn_cast(E)) StrE = ObjCFExpr->getString(); else StrE = cast(E); if (StrE) { S.CheckFormatString(StrE, E, Args, HasVAListArg, format_idx, firstDataArg, Type, InFunctionCall, CallType, CheckedVarArgs); return SLCT_CheckedLiteral; } return SLCT_NotALiteral; } default: return SLCT_NotALiteral; } } void Sema::CheckNonNullArguments(const NonNullAttr *NonNull, const Expr * const *ExprArgs, SourceLocation CallSiteLoc) { for (NonNullAttr::args_iterator i = NonNull->args_begin(), e = NonNull->args_end(); i != e; ++i) { const Expr *ArgExpr = ExprArgs[*i]; // As a special case, transparent unions initialized with zero are // considered null for the purposes of the nonnull attribute. if (const RecordType *UT = ArgExpr->getType()->getAsUnionType()) { if (UT->getDecl()->hasAttr()) if (const CompoundLiteralExpr *CLE = dyn_cast(ArgExpr)) if (const InitListExpr *ILE = dyn_cast(CLE->getInitializer())) ArgExpr = ILE->getInit(0); } bool Result; if (ArgExpr->EvaluateAsBooleanCondition(Result, Context) && !Result) Diag(CallSiteLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); } } Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) { return llvm::StringSwitch(Format->getType()->getName()) .Case("scanf", FST_Scanf) .Cases("printf", "printf0", FST_Printf) .Cases("NSString", "CFString", FST_NSString) .Case("strftime", FST_Strftime) .Case("strfmon", FST_Strfmon) .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) .Default(FST_Unknown); } /// CheckFormatArguments - Check calls to printf and scanf (and similar /// functions) for correct use of format strings. /// Returns true if a format string has been fully checked. bool Sema::CheckFormatArguments(const FormatAttr *Format, ArrayRef Args, bool IsCXXMember, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { FormatStringInfo FSI; if (getFormatStringInfo(Format, IsCXXMember, &FSI)) return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx, FSI.FirstDataArg, GetFormatStringType(Format), CallType, Loc, Range, CheckedVarArgs); return false; } bool Sema::CheckFormatArguments(ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: printf/scanf-like function is called with no format string. if (format_idx >= Args.size()) { Diag(Loc, diag::warn_missing_format_string) << Range; return false; } const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts(); // CHECK: format string is not a string literal. // // Dynamically generated format strings are difficult to // automatically vet at compile time. Requiring that format strings // are string literals: (1) permits the checking of format strings by // the compiler and thereby (2) can practically remove the source of // many format string exploits. // Format string can be either ObjC string (e.g. @@"%d") or // C string (e.g. "%d") // ObjC string uses the same format specifiers as C string, so we can use // the same format string checking logic for both ObjC and C strings. StringLiteralCheckType CT = checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*IsFunctionCall*/true, CheckedVarArgs); if (CT != SLCT_NotALiteral) // Literal format string found, check done! return CT == SLCT_CheckedLiteral; // Strftime is particular as it always uses a single 'time' argument, // so it is safe to pass a non-literal string. if (Type == FST_Strftime) return false; // Do not emit diag when the string param is a macro expansion and the // format is either NSString or CFString. This is a hack to prevent // diag when using the NSLocalizedString and CFCopyLocalizedString macros // which are usually used in place of NS and CF string literals. if (Type == FST_NSString && SourceMgr.isInSystemMacro(Args[format_idx]->getLocStart())) return false; // If there are no arguments specified, warn with -Wformat-security, otherwise // warn only with -Wformat-nonliteral. if (Args.size() == firstDataArg) Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral_noargs) << OrigFormatExpr->getSourceRange(); else Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral) << OrigFormatExpr->getSourceRange(); return false; } namespace { class CheckFormatHandler : public analyze_format_string::FormatStringHandler { protected: Sema &S; const StringLiteral *FExpr; const Expr *OrigFormatExpr; const unsigned FirstDataArg; const unsigned NumDataArgs; const char *Beg; // Start of format string. const bool HasVAListArg; ArrayRef Args; unsigned FormatIdx; llvm::SmallBitVector CoveredArgs; bool usesPositionalArgs; bool atFirstArg; bool inFunctionCall; Sema::VariadicCallType CallType; llvm::SmallBitVector &CheckedVarArgs; public: CheckFormatHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType callType, llvm::SmallBitVector &CheckedVarArgs) : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), usesPositionalArgs(false), atFirstArg(true), inFunctionCall(inFunctionCall), CallType(callType), CheckedVarArgs(CheckedVarArgs) { CoveredArgs.resize(numDataArgs); CoveredArgs.reset(); } void DoneProcessing(); void HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen); void HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID); void HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen); void HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen); virtual void HandlePosition(const char *startPos, unsigned posLen); virtual void HandleInvalidPosition(const char *startSpecifier, unsigned specifierLen, analyze_format_string::PositionContext p); virtual void HandleZeroPosition(const char *startPos, unsigned posLen); void HandleNullChar(const char *nullCharacter); template static void EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); protected: bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen); void HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen); SourceRange getFormatStringRange(); CharSourceRange getSpecifierRange(const char *startSpecifier, unsigned specifierLen); SourceLocation getLocationOfByte(const char *x); const Expr *getDataArg(unsigned i) const; bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex); template void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); void CheckPositionalAndNonpositionalArgs( const analyze_format_string::FormatSpecifier *FS); }; } SourceRange CheckFormatHandler::getFormatStringRange() { return OrigFormatExpr->getSourceRange(); } CharSourceRange CheckFormatHandler:: getSpecifierRange(const char *startSpecifier, unsigned specifierLen) { SourceLocation Start = getLocationOfByte(startSpecifier); SourceLocation End = getLocationOfByte(startSpecifier + specifierLen - 1); // Advance the end SourceLocation by one due to half-open ranges. End = End.getLocWithOffset(1); return CharSourceRange::getCharRange(Start, End); } SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) { return S.getLocationOfStringLiteralByte(FExpr, x - Beg); } void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen){ EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier), getLocationOfByte(startSpecifier), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } void CheckFormatHandler::HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { FixItHint Hint; if (DiagID == diag::warn_format_nonsensical_length) Hint = FixItHint::CreateRemoval(LMRange); EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), Hint); } } void CheckFormatHandler::HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; // See if we know how to fix this conversion specifier. Optional FixedCS = CS.getStandardSpecifier(); if (FixedCS) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength()); S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier) << FixedCS->toString() << FixItHint::CreateReplacement(CSRange, FixedCS->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandlePosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen, analyze_format_string::PositionContext p) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier) << (unsigned) p, getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleZeroPosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleNullChar(const char *nullCharacter) { if (!isa(OrigFormatExpr)) { // The presence of a null character is likely an error. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_format_string_contains_null_char), getLocationOfByte(nullCharacter), /*IsStringLocation*/true, getFormatStringRange()); } } // Note that this may return NULL if there was an error parsing or building // one of the argument expressions. const Expr *CheckFormatHandler::getDataArg(unsigned i) const { return Args[FirstDataArg + i]; } void CheckFormatHandler::DoneProcessing() { // Does the number of data arguments exceed the number of // format conversions in the format string? if (!HasVAListArg) { // Find any arguments that weren't covered. CoveredArgs.flip(); signed notCoveredArg = CoveredArgs.find_first(); if (notCoveredArg >= 0) { assert((unsigned)notCoveredArg < NumDataArgs); if (const Expr *E = getDataArg((unsigned) notCoveredArg)) { SourceLocation Loc = E->getLocStart(); if (!S.getSourceManager().isInSystemMacro(Loc)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_data_arg_not_used), Loc, /*IsStringLocation*/false, getFormatStringRange()); } } } } } bool CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen) { bool keepGoing = true; if (argIndex < NumDataArgs) { // Consider the argument coverered, even though the specifier doesn't // make sense. CoveredArgs.set(argIndex); } else { // If argIndex exceeds the number of data arguments we // don't issue a warning because that is just a cascade of warnings (and // they may have intended '%%' anyway). We don't want to continue processing // the format string after this point, however, as we will like just get // gibberish when trying to match arguments. keepGoing = false; } EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_conversion) << StringRef(csStart, csLen), Loc, /*IsStringLocation*/true, getSpecifierRange(startSpec, specifierLen)); return keepGoing; } void CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen) { EmitFormatDiagnostic( S.PDiag(diag::warn_format_mix_positional_nonpositional_args), Loc, /*isStringLoc*/true, getSpecifierRange(startSpec, specifierLen)); } bool CheckFormatHandler::CheckNumArgs( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex) { if (argIndex >= NumDataArgs) { PartialDiagnostic PDiag = FS.usesPositionalArg() ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args) << (argIndex+1) << NumDataArgs) : S.PDiag(diag::warn_printf_insufficient_data_args); EmitFormatDiagnostic( PDiag, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); return false; } return true; } template void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag, Loc, IsStringLocation, StringRange, FixIt); } /// \brief If the format string is not within the funcion call, emit a note /// so that the function call and string are in diagnostic messages. /// /// \param InFunctionCall if true, the format string is within the function /// call and only one diagnostic message will be produced. Otherwise, an /// extra note will be emitted pointing to location of the format string. /// /// \param ArgumentExpr the expression that is passed as the format string /// argument in the function call. Used for getting locations when two /// diagnostics are emitted. /// /// \param PDiag the callee should already have provided any strings for the /// diagnostic message. This function only adds locations and fixits /// to diagnostics. /// /// \param Loc primary location for diagnostic. If two diagnostics are /// required, one will be at Loc and a new SourceLocation will be created for /// the other one. /// /// \param IsStringLocation if true, Loc points to the format string should be /// used for the note. Otherwise, Loc points to the argument list and will /// be used with PDiag. /// /// \param StringRange some or all of the string to highlight. This is /// templated so it can accept either a CharSourceRange or a SourceRange. /// /// \param FixIt optional fix it hint for the format string. template void CheckFormatHandler::EmitFormatDiagnostic(Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { if (InFunctionCall) { const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag); D << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { D << *I; } } else { S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag) << ArgumentExpr->getSourceRange(); const Sema::SemaDiagnosticBuilder &Note = S.Diag(IsStringLocation ? Loc : StringRange.getBegin(), diag::note_format_string_defined); Note << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { Note << *I; } } } //===--- CHECK: Printf format string checking ------------------------------===// namespace { class CheckPrintfHandler : public CheckFormatHandler { bool ObjCContext; public: CheckPrintfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, bool isObjC, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs), ObjCContext(isObjC) {} bool HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E); bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen); void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen); void HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); bool checkForCStrMembers(const analyze_printf::ArgType &AT, const Expr *E, const CharSourceRange &CSR); }; } bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckPrintfHandler::HandleAmount( const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen) { if (Amt.hasDataArgument()) { if (!HasVAListArg) { unsigned argIndex = Amt.getArgIndex(); if (argIndex >= NumDataArgs) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg) << k, getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } // Type check the data argument. It should be an 'int'. // Although not in conformance with C99, we also allow the argument to be // an 'unsigned int' as that is a reasonably safe case. GCC also // doesn't emit a warning for that case. CoveredArgs.set(argIndex); const Expr *Arg = getDataArg(argIndex); if (!Arg) return false; QualType T = Arg->getType(); const analyze_printf::ArgType &AT = Amt.getArgType(S.Context); assert(AT.isValid()); if (!AT.matchesType(S.Context, T)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type) << k << AT.getRepresentativeTypeName(S.Context) << T << Arg->getSourceRange(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } } } return true; } void CheckPrintfHandler::HandleInvalidAmount( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); FixItHint fixit = Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(), Amt.getConstantLength())) : FixItHint(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount) << type << CS.toString(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), fixit); } void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about pointless flag with a fixit removal. const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag) << flag.toString() << CS.toString(), getLocationOfByte(flag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(flag.getPosition(), 1))); } void CheckPrintfHandler::HandleIgnoredFlag( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about ignored flag with a fixit removal. EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag) << ignoredFlag.toString() << flag.toString(), getLocationOfByte(ignoredFlag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(ignoredFlag.getPosition(), 1))); } // Determines if the specified is a C++ class or struct containing // a member with the specified name and kind (e.g. a CXXMethodDecl named // "c_str()"). template static llvm::SmallPtrSet CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) { const RecordType *RT = Ty->getAs(); llvm::SmallPtrSet Results; if (!RT) return Results; const CXXRecordDecl *RD = dyn_cast(RT->getDecl()); if (!RD) return Results; LookupResult R(S, &S.PP.getIdentifierTable().get(Name), SourceLocation(), Sema::LookupMemberName); // We just need to include all members of the right kind turned up by the // filter, at this point. if (S.LookupQualifiedName(R, RT->getDecl())) for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) { NamedDecl *decl = (*I)->getUnderlyingDecl(); if (MemberKind *FK = dyn_cast(decl)) Results.insert(FK); } return Results; } // Check if a (w)string was passed when a (w)char* was needed, and offer a // better diagnostic if so. AT is assumed to be valid. // Returns true when a c_str() conversion method is found. bool CheckPrintfHandler::checkForCStrMembers( const analyze_printf::ArgType &AT, const Expr *E, const CharSourceRange &CSR) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", S, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) { const CXXMethodDecl *Method = *MI; if (Method->getNumParams() == 0 && AT.matchesType(S.Context, Method->getResultType())) { // FIXME: Suggest parens if the expression needs them. SourceLocation EndLoc = S.getPreprocessor().getLocForEndOfToken(E->getLocEnd()); S.Diag(E->getLocStart(), diag::note_printf_c_str) << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()"); return true; } } return false; } bool CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; using namespace analyze_printf; const PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // First check if the field width, precision, and conversion specifier // have matching data arguments. if (!HandleAmount(FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen)) { return false; } if (!HandleAmount(FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen)) { return false; } if (!CS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check for using an Objective-C specific conversion specifier // in a non-ObjC literal. if (!ObjCContext && CS.isObjCArg()) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // Check for invalid use of field width if (!FS.hasValidFieldWidth()) { HandleInvalidAmount(FS, FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen); } // Check for invalid use of precision if (!FS.hasValidPrecision()) { HandleInvalidAmount(FS, FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen); } // Check each flag does not conflict with any other component. if (!FS.hasValidThousandsGroupingPrefix()) HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen); if (!FS.hasValidLeadingZeros()) HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen); if (!FS.hasValidPlusPrefix()) HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen); if (!FS.hasValidSpacePrefix()) HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen); if (!FS.hasValidAlternativeForm()) HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen); if (!FS.hasValidLeftJustified()) HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen); // Check that flags are not ignored by another flag if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) // ' ' ignored by '+' HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(), startSpecifier, specifierLen); if (FS.hasLeadingZeros() && FS.isLeftJustified()) // '0' ignored by '-' HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(), startSpecifier, specifierLen); // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; const Expr *Arg = getDataArg(argIndex); if (!Arg) return true; return checkFormatExpr(FS, startSpecifier, specifierLen, Arg); } static bool requiresParensToAddCast(const Expr *E) { // FIXME: We should have a general way to reason about operator // precedence and whether parens are actually needed here. // Take care of a few common cases where they aren't. const Expr *Inside = E->IgnoreImpCasts(); if (const PseudoObjectExpr *POE = dyn_cast(Inside)) Inside = POE->getSyntacticForm()->IgnoreImpCasts(); switch (Inside->getStmtClass()) { case Stmt::ArraySubscriptExprClass: case Stmt::CallExprClass: case Stmt::CharacterLiteralClass: case Stmt::CXXBoolLiteralExprClass: case Stmt::DeclRefExprClass: case Stmt::FloatingLiteralClass: case Stmt::IntegerLiteralClass: case Stmt::MemberExprClass: case Stmt::ObjCArrayLiteralClass: case Stmt::ObjCBoolLiteralExprClass: case Stmt::ObjCBoxedExprClass: case Stmt::ObjCDictionaryLiteralClass: case Stmt::ObjCEncodeExprClass: case Stmt::ObjCIvarRefExprClass: case Stmt::ObjCMessageExprClass: case Stmt::ObjCPropertyRefExprClass: case Stmt::ObjCStringLiteralClass: case Stmt::ObjCSubscriptRefExprClass: case Stmt::ParenExprClass: case Stmt::StringLiteralClass: case Stmt::UnaryOperatorClass: return false; default: return true; } } bool CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E) { using namespace analyze_format_string; using namespace analyze_printf; // Now type check the data expression that matches the // format specifier. const analyze_printf::ArgType &AT = FS.getArgType(S.Context, ObjCContext); if (!AT.isValid()) return true; QualType ExprTy = E->getType(); while (const TypeOfExprType *TET = dyn_cast(ExprTy)) { ExprTy = TET->getUnderlyingExpr()->getType(); } if (AT.matchesType(S.Context, ExprTy)) return true; // Look through argument promotions for our error message's reported type. // This includes the integral and floating promotions, but excludes array // and function pointer decay; seeing that an argument intended to be a // string has type 'char [6]' is probably more confusing than 'char *'. if (const ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() == CK_IntegralCast || ICE->getCastKind() == CK_FloatingCast) { E = ICE->getSubExpr(); ExprTy = E->getType(); // Check if we didn't match because of an implicit cast from a 'char' // or 'short' to an 'int'. This is done because printf is a varargs // function. if (ICE->getType() == S.Context.IntTy || ICE->getType() == S.Context.UnsignedIntTy) { // All further checking is done on the subexpression. if (AT.matchesType(S.Context, ExprTy)) return true; } } } else if (const CharacterLiteral *CL = dyn_cast(E)) { // Special case for 'a', which has type 'int' in C. // Note, however, that we do /not/ want to treat multibyte constants like // 'MooV' as characters! This form is deprecated but still exists. if (ExprTy == S.Context.IntTy) if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue())) ExprTy = S.Context.CharTy; } // %C in an Objective-C context prints a unichar, not a wchar_t. // If the argument is an integer of some kind, believe the %C and suggest // a cast instead of changing the conversion specifier. QualType IntendedTy = ExprTy; if (ObjCContext && FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) { if (ExprTy->isIntegralOrUnscopedEnumerationType() && !ExprTy->isCharType()) { // 'unichar' is defined as a typedef of unsigned short, but we should // prefer using the typedef if it is visible. IntendedTy = S.Context.UnsignedShortTy; // While we are here, check if the value is an IntegerLiteral that happens // to be within the valid range. if (const IntegerLiteral *IL = dyn_cast(E)) { const llvm::APInt &V = IL->getValue(); if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy)) return true; } LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getLocStart(), Sema::LookupOrdinaryName); if (S.LookupName(Result, S.getCurScope())) { NamedDecl *ND = Result.getFoundDecl(); if (TypedefNameDecl *TD = dyn_cast(ND)) if (TD->getUnderlyingType() == IntendedTy) IntendedTy = S.Context.getTypedefType(TD); } } } // Special-case some of Darwin's platform-independence types by suggesting // casts to primitive types that are known to be large enough. bool ShouldNotPrintDirectly = false; if (S.Context.getTargetInfo().getTriple().isOSDarwin()) { // Use a 'while' to peel off layers of typedefs. QualType TyTy = IntendedTy; while (const TypedefType *UserTy = TyTy->getAs()) { StringRef Name = UserTy->getDecl()->getName(); QualType CastTy = llvm::StringSwitch(Name) .Case("NSInteger", S.Context.LongTy) .Case("NSUInteger", S.Context.UnsignedLongTy) .Case("SInt32", S.Context.IntTy) .Case("UInt32", S.Context.UnsignedIntTy) .Default(QualType()); if (!CastTy.isNull()) { ShouldNotPrintDirectly = true; IntendedTy = CastTy; break; } TyTy = UserTy->desugar(); } } // We may be able to offer a FixItHint if it is a supported type. PrintfSpecifier fixedFS = FS; bool success = fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, ObjCContext); if (success) { // Get the fix string from the fixed format specifier SmallString<16> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen); if (IntendedTy == ExprTy) { // In this case, the specifier is wrong and should be changed to match // the argument. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << IntendedTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, FixItHint::CreateReplacement(SpecRange, os.str())); } else { // The canonical type for formatting this value is different from the // actual type of the expression. (This occurs, for example, with Darwin's // NSInteger on 32-bit platforms, where it is typedef'd as 'int', but // should be printed as 'long' for 64-bit compatibility.) // Rather than emitting a normal format/argument mismatch, we want to // add a cast to the recommended type (and correct the format string // if necessary). SmallString<16> CastBuf; llvm::raw_svector_ostream CastFix(CastBuf); CastFix << "("; IntendedTy.print(CastFix, S.Context.getPrintingPolicy()); CastFix << ")"; SmallVector Hints; if (!AT.matchesType(S.Context, IntendedTy)) Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str())); if (const CStyleCastExpr *CCast = dyn_cast(E)) { // If there's already a cast present, just replace it. SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc()); Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str())); } else if (!requiresParensToAddCast(E)) { // If the expression has high enough precedence, // just write the C-style cast. Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); } else { // Otherwise, add parens around the expression as well as the cast. CastFix << "("; Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); SourceLocation After = S.PP.getLocForEndOfToken(E->getLocEnd()); Hints.push_back(FixItHint::CreateInsertion(After, ")")); } if (ShouldNotPrintDirectly) { // The expression has a type that should not be printed directly. // We extract the name from the typedef because we don't want to show // the underlying type in the diagnostic. StringRef Name = cast(ExprTy)->getDecl()->getName(); EmitFormatDiagnostic(S.PDiag(diag::warn_format_argument_needs_cast) << Name << IntendedTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation=*/false, SpecRange, Hints); } else { // In this case, the expression could be printed using a different // specifier, but we've decided that the specifier is probably correct // and we should cast instead. Just use the normal warning message. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, Hints); } } } else { const CharSourceRange &CSR = getSpecifierRange(StartSpecifier, SpecifierLen); // Since the warning for passing non-POD types to variadic functions // was deferred until now, we emit a warning for non-POD // arguments here. switch (S.isValidVarArgType(ExprTy)) { case Sema::VAK_Valid: case Sema::VAK_ValidInCXX11: EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); break; case Sema::VAK_Undefined: EmitFormatDiagnostic( S.PDiag(diag::warn_non_pod_vararg_with_format_string) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); checkForCStrMembers(AT, E, CSR); break; case Sema::VAK_Invalid: if (ExprTy->isObjCObjectType()) EmitFormatDiagnostic( S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); else // FIXME: If this is an initializer list, suggest removing the braces // or inserting a cast to the target type. S.Diag(E->getLocStart(), diag::err_cannot_pass_to_vararg_format) << isa(E) << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange(); break; } assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && "format string specifier index out of range"); CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true; } return true; } //===--- CHECK: Scanf format string checking ------------------------------===// namespace { class CheckScanfHandler : public CheckFormatHandler { public: CheckScanfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs) {} bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); void HandleIncompleteScanList(const char *start, const char *end); }; } void CheckScanfHandler::HandleIncompleteScanList(const char *start, const char *end) { EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete), getLocationOfByte(end), /*IsStringLocation*/true, getSpecifierRange(start, end - start)); } bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_scanf::ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckScanfHandler::HandleScanfSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_scanf; using namespace analyze_format_string; const ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); // Handle case where '%' and '*' don't consume an argument. These shouldn't // be used to decide if we are using positional arguments consistently. if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // Check if the field with is non-zero. const OptionalAmount &Amt = FS.getFieldWidth(); if (Amt.getHowSpecified() == OptionalAmount::Constant) { if (Amt.getConstantAmount() == 0) { const CharSourceRange &R = getSpecifierRange(Amt.getStart(), Amt.getConstantLength()); EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, R, FixItHint::CreateRemoval(R)); } } if (!FS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; // Check that the argument type matches the format specifier. const Expr *Ex = getDataArg(argIndex); if (!Ex) return true; const analyze_format_string::ArgType &AT = FS.getArgType(S.Context); if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) { ScanfSpecifier fixedFS = FS; bool success = fixedFS.fixType(Ex->getType(), S.getLangOpts(), S.Context); if (success) { // Get the fix string from the fixed format specifier. SmallString<128> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateReplacement( getSpecifierRange(startSpecifier, specifierLen), os.str())); } else { EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen)); } } return true; } void Sema::CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, bool inFunctionCall, VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: is the format string a wide literal? if (!FExpr->isAscii() && !FExpr->isUTF8()) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_format_string_is_wide_literal), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } // Str - The format string. NOTE: this is NOT null-terminated! StringRef StrRef = FExpr->getString(); const char *Str = StrRef.data(); unsigned StrLen = StrRef.size(); const unsigned numDataArgs = Args.size() - firstDataArg; // CHECK: empty format string? if (StrLen == 0 && numDataArgs > 0) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_empty_format_string), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } if (Type == FST_Printf || Type == FST_NSString) { CheckPrintfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, (Type == FST_NSString), Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } else if (Type == FST_Scanf) { CheckScanfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } // TODO: handle other formats } //===--- CHECK: Standard memory functions ---------------------------------===// /// \brief Determine whether the given type is a dynamic class type (e.g., /// whether it has a vtable). static bool isDynamicClassType(QualType T) { if (CXXRecordDecl *Record = T->getAsCXXRecordDecl()) if (CXXRecordDecl *Definition = Record->getDefinition()) if (Definition->isDynamicClass()) return true; return false; } /// \brief If E is a sizeof expression, returns its argument expression, /// otherwise returns NULL. static const Expr *getSizeOfExprArg(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf && !SizeOf->isArgumentType()) return SizeOf->getArgumentExpr()->IgnoreParenImpCasts(); return 0; } /// \brief If E is a sizeof expression, returns its argument type. static QualType getSizeOfArgType(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf) return SizeOf->getTypeOfArgument(); return QualType(); } /// \brief Check for dangerous or invalid arguments to memset(). /// /// This issues warnings on known problematic, dangerous or unspecified /// arguments to the standard 'memset', 'memcpy', 'memmove', and 'memcmp' /// function calls. /// /// \param Call The call expression to diagnose. void Sema::CheckMemaccessArguments(const CallExpr *Call, unsigned BId, IdentifierInfo *FnName) { assert(BId != 0); // It is possible to have a non-standard definition of memset. Validate // we have enough arguments, and if not, abort further checking. unsigned ExpectedNumArgs = (BId == Builtin::BIstrndup ? 2 : 3); if (Call->getNumArgs() < ExpectedNumArgs) return; unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIstrndup ? 1 : 2); unsigned LenArg = (BId == Builtin::BIstrndup ? 1 : 2); const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts(); // We have special checking when the length is a sizeof expression. QualType SizeOfArgTy = getSizeOfArgType(LenExpr); const Expr *SizeOfArg = getSizeOfExprArg(LenExpr); llvm::FoldingSetNodeID SizeOfArgID; for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) { const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts(); SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange(); QualType DestTy = Dest->getType(); if (const PointerType *DestPtrTy = DestTy->getAs()) { QualType PointeeTy = DestPtrTy->getPointeeType(); // Never warn about void type pointers. This can be used to suppress // false positives. if (PointeeTy->isVoidType()) continue; // Catch "memset(p, 0, sizeof(p))" -- needs to be sizeof(*p). Do this by // actually comparing the expressions for equality. Because computing the // expression IDs can be expensive, we only do this if the diagnostic is // enabled. if (SizeOfArg && Diags.getDiagnosticLevel(diag::warn_sizeof_pointer_expr_memaccess, SizeOfArg->getExprLoc())) { // We only compute IDs for expressions if the warning is enabled, and // cache the sizeof arg's ID. if (SizeOfArgID == llvm::FoldingSetNodeID()) SizeOfArg->Profile(SizeOfArgID, Context, true); llvm::FoldingSetNodeID DestID; Dest->Profile(DestID, Context, true); if (DestID == SizeOfArgID) { // TODO: For strncpy() and friends, this could suggest sizeof(dst) // over sizeof(src) as well. unsigned ActionIdx = 0; // Default is to suggest dereferencing. StringRef ReadableName = FnName->getName(); if (const UnaryOperator *UnaryOp = dyn_cast(Dest)) if (UnaryOp->getOpcode() == UO_AddrOf) ActionIdx = 1; // If its an address-of operator, just remove it. if (!PointeeTy->isIncompleteType() && (Context.getTypeSize(PointeeTy) == Context.getCharWidth())) ActionIdx = 2; // If the pointee's size is sizeof(char), // suggest an explicit length. // If the function is defined as a builtin macro, do not show macro // expansion. SourceLocation SL = SizeOfArg->getExprLoc(); SourceRange DSR = Dest->getSourceRange(); SourceRange SSR = SizeOfArg->getSourceRange(); SourceManager &SM = PP.getSourceManager(); if (SM.isMacroArgExpansion(SL)) { ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts); SL = SM.getSpellingLoc(SL); DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()), SM.getSpellingLoc(DSR.getEnd())); SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()), SM.getSpellingLoc(SSR.getEnd())); } DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess) << ReadableName << PointeeTy << DestTy << DSR << SSR); DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess_note) << ActionIdx << SSR); break; } } // Also check for cases where the sizeof argument is the exact same // type as the memory argument, and where it points to a user-defined // record type. if (SizeOfArgTy != QualType()) { if (PointeeTy->isRecordType() && Context.typesAreCompatible(SizeOfArgTy, DestTy)) { DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest, PDiag(diag::warn_sizeof_pointer_type_memaccess) << FnName << SizeOfArgTy << ArgIdx << PointeeTy << Dest->getSourceRange() << LenExpr->getSourceRange()); break; } } // Always complain about dynamic classes. if (isDynamicClassType(PointeeTy)) { unsigned OperationType = 0; // "overwritten" if we're warning about the destination for any call // but memcmp; otherwise a verb appropriate to the call. if (ArgIdx != 0 || BId == Builtin::BImemcmp) { if (BId == Builtin::BImemcpy) OperationType = 1; else if(BId == Builtin::BImemmove) OperationType = 2; else if (BId == Builtin::BImemcmp) OperationType = 3; } DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_dyn_class_memaccess) << (BId == Builtin::BImemcmp ? ArgIdx + 2 : ArgIdx) << FnName << PointeeTy << OperationType << Call->getCallee()->getSourceRange()); } else if (PointeeTy.hasNonTrivialObjCLifetime() && BId != Builtin::BImemset) DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_arc_object_memaccess) << ArgIdx << FnName << PointeeTy << Call->getCallee()->getSourceRange()); else continue; DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::note_bad_memaccess_silence) << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); break; } } } // A little helper routine: ignore addition and subtraction of integer literals. // This intentionally does not ignore all integer constant expressions because // we don't want to remove sizeof(). static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) { Ex = Ex->IgnoreParenCasts(); for (;;) { const BinaryOperator * BO = dyn_cast(Ex); if (!BO || !BO->isAdditiveOp()) break; const Expr *RHS = BO->getRHS()->IgnoreParenCasts(); const Expr *LHS = BO->getLHS()->IgnoreParenCasts(); if (isa(RHS)) Ex = LHS; else if (isa(LHS)) Ex = RHS; else break; } return Ex; } static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty, ASTContext &Context) { // Only handle constant-sized or VLAs, but not flexible members. if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) { // Only issue the FIXIT for arrays of size > 1. if (CAT->getSize().getSExtValue() <= 1) return false; } else if (!Ty->isVariableArrayType()) { return false; } return true; } // Warn if the user has made the 'size' argument to strlcpy or strlcat // be the size of the source, instead of the destination. void Sema::CheckStrlcpycatArguments(const CallExpr *Call, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments if (Call->getNumArgs() != 3) return; const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context); const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context); const Expr *CompareWithSrc = NULL; // Look for 'strlcpy(dst, x, sizeof(x))' if (const Expr *Ex = getSizeOfExprArg(SizeArg)) CompareWithSrc = Ex; else { // Look for 'strlcpy(dst, x, strlen(x))' if (const CallExpr *SizeCall = dyn_cast(SizeArg)) { if (SizeCall->isBuiltinCall() == Builtin::BIstrlen && SizeCall->getNumArgs() == 1) CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context); } } if (!CompareWithSrc) return; // Determine if the argument to sizeof/strlen is equal to the source // argument. In principle there's all kinds of things you could do // here, for instance creating an == expression and evaluating it with // EvaluateAsBooleanCondition, but this uses a more direct technique: const DeclRefExpr *SrcArgDRE = dyn_cast(SrcArg); if (!SrcArgDRE) return; const DeclRefExpr *CompareWithSrcDRE = dyn_cast(CompareWithSrc); if (!CompareWithSrcDRE || SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl()) return; const Expr *OriginalSizeArg = Call->getArg(2); Diag(CompareWithSrcDRE->getLocStart(), diag::warn_strlcpycat_wrong_size) << OriginalSizeArg->getSourceRange() << FnName; // Output a FIXIT hint if the destination is an array (rather than a // pointer to an array). This could be enhanced to handle some // pointers if we know the actual size, like if DstArg is 'array+2' // we could say 'sizeof(array)-2'. const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts(); if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context)) return; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ")"; Diag(OriginalSizeArg->getLocStart(), diag::note_strlcpycat_wrong_size) << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(), OS.str()); } /// Check if two expressions refer to the same declaration. static bool referToTheSameDecl(const Expr *E1, const Expr *E2) { if (const DeclRefExpr *D1 = dyn_cast_or_null(E1)) if (const DeclRefExpr *D2 = dyn_cast_or_null(E2)) return D1->getDecl() == D2->getDecl(); return false; } static const Expr *getStrlenExprArg(const Expr *E) { if (const CallExpr *CE = dyn_cast(E)) { const FunctionDecl *FD = CE->getDirectCallee(); if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen) return 0; return CE->getArg(0)->IgnoreParenCasts(); } return 0; } // Warn on anti-patterns as the 'size' argument to strncat. // The correct size argument should look like following: // strncat(dst, src, sizeof(dst) - strlen(dest) - 1); void Sema::CheckStrncatArguments(const CallExpr *CE, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments. if (CE->getNumArgs() < 3) return; const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts(); const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts(); const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts(); // Identify common expressions, which are wrongly used as the size argument // to strncat and may lead to buffer overflows. unsigned PatternType = 0; if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) { // - sizeof(dst) if (referToTheSameDecl(SizeOfArg, DstArg)) PatternType = 1; // - sizeof(src) else if (referToTheSameDecl(SizeOfArg, SrcArg)) PatternType = 2; } else if (const BinaryOperator *BE = dyn_cast(LenArg)) { if (BE->getOpcode() == BO_Sub) { const Expr *L = BE->getLHS()->IgnoreParenCasts(); const Expr *R = BE->getRHS()->IgnoreParenCasts(); // - sizeof(dst) - strlen(dst) if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) && referToTheSameDecl(DstArg, getStrlenExprArg(R))) PatternType = 1; // - sizeof(src) - (anything) else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L))) PatternType = 2; } } if (PatternType == 0) return; // Generate the diagnostic. SourceLocation SL = LenArg->getLocStart(); SourceRange SR = LenArg->getSourceRange(); SourceManager &SM = PP.getSourceManager(); // If the function is defined as a builtin macro, do not show macro expansion. if (SM.isMacroArgExpansion(SL)) { SL = SM.getSpellingLoc(SL); SR = SourceRange(SM.getSpellingLoc(SR.getBegin()), SM.getSpellingLoc(SR.getEnd())); } // Check if the destination is an array (rather than a pointer to an array). QualType DstTy = DstArg->getType(); bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy, Context); if (!isKnownSizeArray) { if (PatternType == 1) Diag(SL, diag::warn_strncat_wrong_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; return; } if (PatternType == 1) Diag(SL, diag::warn_strncat_large_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ") - "; OS << "strlen("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ") - 1"; Diag(SL, diag::note_strncat_wrong_size) << FixItHint::CreateReplacement(SR, OS.str()); } //===--- CHECK: Return Address of Stack Variable --------------------------===// static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl); static Expr *EvalAddr(Expr* E, SmallVectorImpl &refVars, Decl *ParentDecl); /// CheckReturnStackAddr - Check if a return statement returns the address /// of a stack variable. void Sema::CheckReturnStackAddr(Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc) { Expr *stackE = 0; SmallVector refVars; // Perform checking for returned stack addresses, local blocks, // label addresses or references to temporaries. if (lhsType->isPointerType() || (!getLangOpts().ObjCAutoRefCount && lhsType->isBlockPointerType())) { stackE = EvalAddr(RetValExp, refVars, /*ParentDecl=*/0); } else if (lhsType->isReferenceType()) { stackE = EvalVal(RetValExp, refVars, /*ParentDecl=*/0); } if (stackE == 0) return; // Nothing suspicious was found. SourceLocation diagLoc; SourceRange diagRange; if (refVars.empty()) { diagLoc = stackE->getLocStart(); diagRange = stackE->getSourceRange(); } else { // We followed through a reference variable. 'stackE' contains the // problematic expression but we will warn at the return statement pointing // at the reference variable. We will later display the "trail" of // reference variables using notes. diagLoc = refVars[0]->getLocStart(); diagRange = refVars[0]->getSourceRange(); } if (DeclRefExpr *DR = dyn_cast(stackE)) { //address of local var. Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_stack_ref : diag::warn_ret_stack_addr) << DR->getDecl()->getDeclName() << diagRange; } else if (isa(stackE)) { // local block. Diag(diagLoc, diag::err_ret_local_block) << diagRange; } else if (isa(stackE)) { // address of label. Diag(diagLoc, diag::warn_ret_addr_label) << diagRange; } else { // local temporary. Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_local_temp_ref : diag::warn_ret_local_temp_addr) << diagRange; } // Display the "trail" of reference variables that we followed until we // found the problematic expression using notes. for (unsigned i = 0, e = refVars.size(); i != e; ++i) { VarDecl *VD = cast(refVars[i]->getDecl()); // If this var binds to another reference var, show the range of the next // var, otherwise the var binds to the problematic expression, in which case // show the range of the expression. SourceRange range = (i < e-1) ? refVars[i+1]->getSourceRange() : stackE->getSourceRange(); Diag(VD->getLocation(), diag::note_ref_var_local_bind) << VD->getDeclName() << range; } } /// EvalAddr - EvalAddr and EvalVal are mutually recursive functions that /// check if the expression in a return statement evaluates to an address /// to a location on the stack, a local block, an address of a label, or a /// reference to local temporary. The recursion is used to traverse the /// AST of the return expression, with recursion backtracking when we /// encounter a subexpression that (1) clearly does not lead to one of the /// above problematic expressions (2) is something we cannot determine leads to /// a problematic expression based on such local checking. /// /// Both EvalAddr and EvalVal follow through reference variables to evaluate /// the expression that they point to. Such variables are added to the /// 'refVars' vector so that we know what the reference variable "trail" was. /// /// EvalAddr processes expressions that are pointers that are used as /// references (and not L-values). EvalVal handles all other values. /// At the base case of the recursion is a check for the above problematic /// expressions. /// /// This implementation handles: /// /// * pointer-to-pointer casts /// * implicit conversions from array references to pointers /// * taking the address of fields /// * arbitrary interplay between "&" and "*" operators /// * pointer arithmetic from an address of a stack variable /// * taking the address of an array element where the array is on the stack static Expr *EvalAddr(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { if (E->isTypeDependent()) return NULL; // We should only be called for evaluating pointer expressions. assert((E->getType()->isAnyPointerType() || E->getType()->isBlockPointerType() || E->getType()->isObjCQualifiedIdType()) && "EvalAddr only works on pointers"); E = E->IgnoreParens(); // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. switch (E->getStmtClass()) { case Stmt::DeclRefExprClass: { DeclRefExpr *DR = cast(E); if (VarDecl *V = dyn_cast(DR->getDecl())) // If this is a reference variable, follow through to the expression that // it points to. if (V->hasLocalStorage() && V->getType()->isReferenceType() && V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalAddr(V->getInit(), refVars, ParentDecl); } return NULL; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is AddrOf. All others don't make sense as pointers. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_AddrOf) return EvalVal(U->getSubExpr(), refVars, ParentDecl); else return NULL; } case Stmt::BinaryOperatorClass: { // Handle pointer arithmetic. All other binary operators are not valid // in this context. BinaryOperator *B = cast(E); BinaryOperatorKind op = B->getOpcode(); if (op != BO_Add && op != BO_Sub) return NULL; Expr *Base = B->getLHS(); // Determine which argument is the real pointer base. It could be // the RHS argument instead of the LHS. if (!Base->getType()->isPointerType()) Base = B->getRHS(); assert (Base->getType()->isPointerType()); return EvalAddr(Base, refVars, ParentDecl); } // For conditional operators we need to see if either the LHS or RHS are // valid DeclRefExpr*s. If one of them is valid, we return it. case Stmt::ConditionalOperatorClass: { ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (Expr *lhsExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!lhsExpr->getType()->isVoidType()) if (Expr* LHS = EvalAddr(lhsExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return NULL; return EvalAddr(C->getRHS(), refVars, ParentDecl); } case Stmt::BlockExprClass: if (cast(E)->getBlockDecl()->hasCaptures()) return E; // local block. return NULL; case Stmt::AddrLabelExprClass: return E; // address of label. case Stmt::ExprWithCleanupsClass: return EvalAddr(cast(E)->getSubExpr(), refVars, ParentDecl); // For casts, we need to handle conversions from arrays to // pointer values, and pointer-to-pointer conversions. case Stmt::ImplicitCastExprClass: case Stmt::CStyleCastExprClass: case Stmt::CXXFunctionalCastExprClass: case Stmt::ObjCBridgedCastExprClass: case Stmt::CXXStaticCastExprClass: case Stmt::CXXDynamicCastExprClass: case Stmt::CXXConstCastExprClass: case Stmt::CXXReinterpretCastExprClass: { Expr* SubExpr = cast(E)->getSubExpr(); switch (cast(E)->getCastKind()) { case CK_BitCast: case CK_LValueToRValue: case CK_NoOp: case CK_BaseToDerived: case CK_DerivedToBase: case CK_UncheckedDerivedToBase: case CK_Dynamic: case CK_CPointerToObjCPointerCast: case CK_BlockPointerToObjCPointerCast: case CK_AnyPointerToBlockPointerCast: return EvalAddr(SubExpr, refVars, ParentDecl); case CK_ArrayToPointerDecay: return EvalVal(SubExpr, refVars, ParentDecl); default: return 0; } } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalAddr( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; // Everything else: we simply don't reason about them. default: return NULL; } } /// EvalVal - This function is complements EvalAddr in the mutual recursion. /// See the comments for EvalAddr for more details. static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { do { // We should only be called for evaluating non-pointer expressions, or // expressions with a pointer type that are not used as references but instead // are l-values (e.g., DeclRefExpr with a pointer type). // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. E = E->IgnoreParens(); switch (E->getStmtClass()) { case Stmt::ImplicitCastExprClass: { ImplicitCastExpr *IE = cast(E); if (IE->getValueKind() == VK_LValue) { E = IE->getSubExpr(); continue; } return NULL; } case Stmt::ExprWithCleanupsClass: return EvalVal(cast(E)->getSubExpr(), refVars,ParentDecl); case Stmt::DeclRefExprClass: { // When we hit a DeclRefExpr we are looking at code that refers to a // variable's name. If it's not a reference variable we check if it has // local storage within the function, and if so, return the expression. DeclRefExpr *DR = cast(E); if (VarDecl *V = dyn_cast(DR->getDecl())) { // Check if it refers to itself, e.g. "int& i = i;". if (V == ParentDecl) return DR; if (V->hasLocalStorage()) { if (!V->getType()->isReferenceType()) return DR; // Reference variable, follow through to the expression that // it points to. if (V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalVal(V->getInit(), refVars, V); } } } return NULL; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is Deref. All others don't resolve to a "name." This includes // handling all sorts of rvalues passed to a unary operator. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_Deref) return EvalAddr(U->getSubExpr(), refVars, ParentDecl); return NULL; } case Stmt::ArraySubscriptExprClass: { // Array subscripts are potential references to data on the stack. We // retrieve the DeclRefExpr* for the array variable if it indeed // has local storage. return EvalAddr(cast(E)->getBase(), refVars,ParentDecl); } case Stmt::ConditionalOperatorClass: { // For conditional operators we need to see if either the LHS or RHS are // non-NULL Expr's. If one is non-NULL, we return it. ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (Expr *lhsExpr = C->getLHS()) if (Expr *LHS = EvalVal(lhsExpr, refVars, ParentDecl)) return LHS; return EvalVal(C->getRHS(), refVars, ParentDecl); } // Accesses to members are potential references to data on the stack. case Stmt::MemberExprClass: { MemberExpr *M = cast(E); // Check for indirect access. We only want direct field accesses. if (M->isArrow()) return NULL; // Check whether the member type is itself a reference, in which case // we're not going to refer to the member, but to what the member refers to. if (M->getMemberDecl()->getType()->isReferenceType()) return NULL; return EvalVal(M->getBase(), refVars, ParentDecl); } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalVal( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; default: // Check that we don't return or take the address of a reference to a // temporary. This is only useful in C++. if (!E->isTypeDependent() && E->isRValue()) return E; // Everything else: we simply don't reason about them. return NULL; } } while (true); } //===--- CHECK: Floating-Point comparisons (-Wfloat-equal) ---------------===// /// Check for comparisons of floating point operands using != and ==. /// Issue a warning if these are no self-comparisons, as they are not likely /// to do what the programmer intended. void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) { Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts(); Expr* RightExprSansParen = RHS->IgnoreParenImpCasts(); // Special case: check for x == x (which is OK). // Do not emit warnings for such cases. if (DeclRefExpr* DRL = dyn_cast(LeftExprSansParen)) if (DeclRefExpr* DRR = dyn_cast(RightExprSansParen)) if (DRL->getDecl() == DRR->getDecl()) return; // Special case: check for comparisons against literals that can be exactly // represented by APFloat. In such cases, do not emit a warning. This // is a heuristic: often comparison against such literals are used to // detect if a value in a variable has not changed. This clearly can // lead to false negatives. if (FloatingLiteral* FLL = dyn_cast(LeftExprSansParen)) { if (FLL->isExact()) return; } else if (FloatingLiteral* FLR = dyn_cast(RightExprSansParen)) if (FLR->isExact()) return; // Check for comparisons with builtin types. if (CallExpr* CL = dyn_cast(LeftExprSansParen)) if (CL->isBuiltinCall()) return; if (CallExpr* CR = dyn_cast(RightExprSansParen)) if (CR->isBuiltinCall()) return; // Emit the diagnostic. Diag(Loc, diag::warn_floatingpoint_eq) << LHS->getSourceRange() << RHS->getSourceRange(); } //===--- CHECK: Integer mixed-sign comparisons (-Wsign-compare) --------===// //===--- CHECK: Lossy implicit conversions (-Wconversion) --------------===// namespace { /// Structure recording the 'active' range of an integer-valued /// expression. struct IntRange { /// The number of bits active in the int. unsigned Width; /// True if the int is known not to have negative values. bool NonNegative; IntRange(unsigned Width, bool NonNegative) : Width(Width), NonNegative(NonNegative) {} /// Returns the range of the bool type. static IntRange forBoolType() { return IntRange(1, true); } /// Returns the range of an opaque value of the given integral type. static IntRange forValueOfType(ASTContext &C, QualType T) { return forValueOfCanonicalType(C, T->getCanonicalTypeInternal().getTypePtr()); } /// Returns the range of an opaque value of a canonical integral type. static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); // For enum types, use the known bit width of the enumerators. if (const EnumType *ET = dyn_cast(T)) { EnumDecl *Enum = ET->getDecl(); if (!Enum->isCompleteDefinition()) return IntRange(C.getIntWidth(QualType(T, 0)), false); unsigned NumPositive = Enum->getNumPositiveBits(); unsigned NumNegative = Enum->getNumNegativeBits(); if (NumNegative == 0) return IntRange(NumPositive, true/*NonNegative*/); else return IntRange(std::max(NumPositive + 1, NumNegative), false/*NonNegative*/); } const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the "target" range of a canonical integral type, i.e. /// the range of values expressible in the type. /// /// This matches forValueOfCanonicalType except that enums have the /// full range of their type, not the range of their enumerators. static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); if (const EnumType *ET = dyn_cast(T)) T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr(); const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the supremum of two ranges: i.e. their conservative merge. static IntRange join(IntRange L, IntRange R) { return IntRange(std::max(L.Width, R.Width), L.NonNegative && R.NonNegative); } /// Returns the infinum of two ranges: i.e. their aggressive merge. static IntRange meet(IntRange L, IntRange R) { return IntRange(std::min(L.Width, R.Width), L.NonNegative || R.NonNegative); } }; static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { if (value.isSigned() && value.isNegative()) return IntRange(value.getMinSignedBits(), false); if (value.getBitWidth() > MaxWidth) value = value.trunc(MaxWidth); // isNonNegative() just checks the sign bit without considering // signedness. return IntRange(value.getActiveBits(), true); } static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { if (result.isInt()) return GetValueRange(C, result.getInt(), MaxWidth); if (result.isVector()) { IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth); for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) { IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth); R = IntRange::join(R, El); } return R; } if (result.isComplexInt()) { IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth); IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth); return IntRange::join(R, I); } // This can happen with lossless casts to intptr_t of "based" lvalues. // Assume it might use arbitrary bits. // FIXME: The only reason we need to pass the type in here is to get // the sign right on this one case. It would be nice if APValue // preserved this. assert(result.isLValue() || result.isAddrLabelDiff()); return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType()); } static QualType GetExprType(Expr *E) { QualType Ty = E->getType(); if (const AtomicType *AtomicRHS = Ty->getAs()) Ty = AtomicRHS->getValueType(); return Ty; } /// Pseudo-evaluate the given integer expression, estimating the /// range of values it might take. /// /// \param MaxWidth - the width to which the value will be truncated static IntRange GetExprRange(ASTContext &C, Expr *E, unsigned MaxWidth) { E = E->IgnoreParens(); // Try a full evaluation first. Expr::EvalResult result; if (E->EvaluateAsRValue(result, C)) return GetValueRange(C, result.Val, GetExprType(E), MaxWidth); // I think we only want to look through implicit casts here; if the // user has an explicit widening cast, we should treat the value as // being of the new, wider type. if (ImplicitCastExpr *CE = dyn_cast(E)) { if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue) return GetExprRange(C, CE->getSubExpr(), MaxWidth); IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE)); bool isIntegerCast = (CE->getCastKind() == CK_IntegralCast); // Assume that non-integer casts can span the full range of the type. if (!isIntegerCast) return OutputTypeRange; IntRange SubRange = GetExprRange(C, CE->getSubExpr(), std::min(MaxWidth, OutputTypeRange.Width)); // Bail out if the subexpr's range is as wide as the cast type. if (SubRange.Width >= OutputTypeRange.Width) return OutputTypeRange; // Otherwise, we take the smaller width, and we're non-negative if // either the output type or the subexpr is. return IntRange(SubRange.Width, SubRange.NonNegative || OutputTypeRange.NonNegative); } if (ConditionalOperator *CO = dyn_cast(E)) { // If we can fold the condition, just take that operand. bool CondResult; if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C)) return GetExprRange(C, CondResult ? CO->getTrueExpr() : CO->getFalseExpr(), MaxWidth); // Otherwise, conservatively merge. IntRange L = GetExprRange(C, CO->getTrueExpr(), MaxWidth); IntRange R = GetExprRange(C, CO->getFalseExpr(), MaxWidth); return IntRange::join(L, R); } if (BinaryOperator *BO = dyn_cast(E)) { switch (BO->getOpcode()) { // Boolean-valued operations are single-bit and positive. case BO_LAnd: case BO_LOr: case BO_LT: case BO_GT: case BO_LE: case BO_GE: case BO_EQ: case BO_NE: return IntRange::forBoolType(); // The type of the assignments is the type of the LHS, so the RHS // is not necessarily the same type. case BO_MulAssign: case BO_DivAssign: case BO_RemAssign: case BO_AddAssign: case BO_SubAssign: case BO_XorAssign: case BO_OrAssign: // TODO: bitfields? return IntRange::forValueOfType(C, GetExprType(E)); // Simple assignments just pass through the RHS, which will have // been coerced to the LHS type. case BO_Assign: // TODO: bitfields? return GetExprRange(C, BO->getRHS(), MaxWidth); // Operations with opaque sources are black-listed. case BO_PtrMemD: case BO_PtrMemI: return IntRange::forValueOfType(C, GetExprType(E)); // Bitwise-and uses the *infinum* of the two source ranges. case BO_And: case BO_AndAssign: return IntRange::meet(GetExprRange(C, BO->getLHS(), MaxWidth), GetExprRange(C, BO->getRHS(), MaxWidth)); // Left shift gets black-listed based on a judgement call. case BO_Shl: // ...except that we want to treat '1 << (blah)' as logically // positive. It's an important idiom. if (IntegerLiteral *I = dyn_cast(BO->getLHS()->IgnoreParenCasts())) { if (I->getValue() == 1) { IntRange R = IntRange::forValueOfType(C, GetExprType(E)); return IntRange(R.Width, /*NonNegative*/ true); } } // fallthrough case BO_ShlAssign: return IntRange::forValueOfType(C, GetExprType(E)); // Right shift by a constant can narrow its left argument. case BO_Shr: case BO_ShrAssign: { IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); // If the shift amount is a positive constant, drop the width by // that much. llvm::APSInt shift; if (BO->getRHS()->isIntegerConstantExpr(shift, C) && shift.isNonNegative()) { unsigned zext = shift.getZExtValue(); if (zext >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width -= zext; } return L; } // Comma acts as its right operand. case BO_Comma: return GetExprRange(C, BO->getRHS(), MaxWidth); // Black-list pointer subtractions. case BO_Sub: if (BO->getLHS()->getType()->isPointerType()) return IntRange::forValueOfType(C, GetExprType(E)); break; // The width of a division result is mostly determined by the size // of the LHS. case BO_Div: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); // If the divisor is constant, use that. llvm::APSInt divisor; if (BO->getRHS()->isIntegerConstantExpr(divisor, C)) { unsigned log2 = divisor.logBase2(); // floor(log_2(divisor)) if (log2 >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width = std::min(L.Width - log2, MaxWidth); return L; } // Otherwise, just use the LHS's width. IntRange R = GetExprRange(C, BO->getRHS(), opWidth); return IntRange(L.Width, L.NonNegative && R.NonNegative); } // The result of a remainder can't be larger than the result of // either side. case BO_Rem: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); IntRange R = GetExprRange(C, BO->getRHS(), opWidth); IntRange meet = IntRange::meet(L, R); meet.Width = std::min(meet.Width, MaxWidth); return meet; } // The default behavior is okay for these. case BO_Mul: case BO_Add: case BO_Xor: case BO_Or: break; } // The default case is to treat the operation as if it were closed // on the narrowest type that encompasses both operands. IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); IntRange R = GetExprRange(C, BO->getRHS(), MaxWidth); return IntRange::join(L, R); } if (UnaryOperator *UO = dyn_cast(E)) { switch (UO->getOpcode()) { // Boolean-valued operations are white-listed. case UO_LNot: return IntRange::forBoolType(); // Operations with opaque sources are black-listed. case UO_Deref: case UO_AddrOf: // should be impossible return IntRange::forValueOfType(C, GetExprType(E)); default: return GetExprRange(C, UO->getSubExpr(), MaxWidth); } } if (OpaqueValueExpr *OVE = dyn_cast(E)) return GetExprRange(C, OVE->getSourceExpr(), MaxWidth); if (FieldDecl *BitField = E->getSourceBitField()) return IntRange(BitField->getBitWidthValue(C), BitField->getType()->isUnsignedIntegerOrEnumerationType()); return IntRange::forValueOfType(C, GetExprType(E)); } static IntRange GetExprRange(ASTContext &C, Expr *E) { return GetExprRange(C, E, C.getIntWidth(GetExprType(E))); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { llvm::APFloat truncated = value; bool ignored; truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored); truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored); return truncated.bitwiseIsEqual(value); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. /// /// The value might be a vector of floats (or a complex number). static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { if (value.isFloat()) return IsSameFloatAfterCast(value.getFloat(), Src, Tgt); if (value.isVector()) { for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i) if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt)) return false; return true; } assert(value.isComplexFloat()); return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) && IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt)); } static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); static bool IsZero(Sema &S, Expr *E) { // Suppress cases where we are comparing against an enum constant. if (const DeclRefExpr *DR = dyn_cast(E->IgnoreParenImpCasts())) if (isa(DR->getDecl())) return false; // Suppress cases where the '0' value is expanded from a macro. if (E->getLocStart().isMacroID()) return false; llvm::APSInt Value; return E->isIntegerConstantExpr(Value, S.Context) && Value == 0; } static bool HasEnumType(Expr *E) { // Strip off implicit integral promotions. while (ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() != CK_IntegralCast && ICE->getCastKind() != CK_NoOp) break; E = ICE->getSubExpr(); } return E->getType()->isEnumeralType(); } static void CheckTrivialUnsignedComparison(Sema &S, BinaryOperator *E) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; BinaryOperatorKind op = E->getOpcode(); if (E->isValueDependent()) return; if (op == BO_LT && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << "< 0" << "false" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GE && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << ">= 0" << "true" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GT && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 >" << "false" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_LE && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 <=" << "true" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } } static void DiagnoseOutOfRangeComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, llvm::APSInt Value, bool RhsConstant) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; // 0 values are handled later by CheckTrivialUnsignedComparison(). if (Value == 0) return; BinaryOperatorKind op = E->getOpcode(); QualType OtherT = Other->getType(); QualType ConstantT = Constant->getType(); QualType CommonT = E->getLHS()->getType(); if (S.Context.hasSameUnqualifiedType(OtherT, ConstantT)) return; assert((OtherT->isIntegerType() && ConstantT->isIntegerType()) && "comparison with non-integer type"); bool ConstantSigned = ConstantT->isSignedIntegerType(); bool CommonSigned = CommonT->isSignedIntegerType(); bool EqualityOnly = false; // TODO: Investigate using GetExprRange() to get tighter bounds on // on the bit ranges. IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT); unsigned OtherWidth = OtherRange.Width; if (CommonSigned) { // The common type is signed, therefore no signed to unsigned conversion. if (!OtherRange.NonNegative) { // Check that the constant is representable in type OtherT. if (ConstantSigned) { if (OtherWidth >= Value.getMinSignedBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits() + 1) return; } } else { // !OtherSigned // Check that the constant is representable in type OtherT. // Negative values are out of range. if (ConstantSigned) { if (Value.isNonNegative() && OtherWidth >= Value.getActiveBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits()) return; } } } else { // !CommonSigned if (OtherRange.NonNegative) { if (OtherWidth >= Value.getActiveBits()) return; } else if (!OtherRange.NonNegative && !ConstantSigned) { // Check to see if the constant is representable in OtherT. if (OtherWidth > Value.getActiveBits()) return; // Check to see if the constant is equivalent to a negative value // cast to CommonT. if (S.Context.getIntWidth(ConstantT) == S.Context.getIntWidth(CommonT) && Value.isNegative() && Value.getMinSignedBits() <= OtherWidth) return; // The constant value rests between values that OtherT can represent after // conversion. Relational comparison still works, but equality // comparisons will be tautological. EqualityOnly = true; } else { // OtherSigned && ConstantSigned assert(0 && "Two signed types converted to unsigned types."); } } bool PositiveConstant = !ConstantSigned || Value.isNonNegative(); bool IsTrue = true; if (op == BO_EQ || op == BO_NE) { IsTrue = op == BO_NE; } else if (EqualityOnly) { return; } else if (RhsConstant) { if (op == BO_GT || op == BO_GE) IsTrue = !PositiveConstant; else // op == BO_LT || op == BO_LE IsTrue = PositiveConstant; } else { if (op == BO_LT || op == BO_LE) IsTrue = !PositiveConstant; else // op == BO_GT || op == BO_GE IsTrue = PositiveConstant; } // If this is a comparison to an enum constant, include that // constant in the diagnostic. const EnumConstantDecl *ED = 0; if (const DeclRefExpr *DR = dyn_cast(Constant)) ED = dyn_cast(DR->getDecl()); SmallString<64> PrettySourceValue; llvm::raw_svector_ostream OS(PrettySourceValue); if (ED) OS << '\'' << *ED << "' (" << Value << ")"; else OS << Value; S.Diag(E->getOperatorLoc(), diag::warn_out_of_range_compare) << OS.str() << OtherT << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } /// Analyze the operands of the given comparison. Implements the /// fallback case from AnalyzeComparison. static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// \brief Implements -Wsign-compare. /// /// \param E the binary operator to check for warnings static void AnalyzeComparison(Sema &S, BinaryOperator *E) { // The type the comparison is being performed in. QualType T = E->getLHS()->getType(); assert(S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType()) && "comparison with mismatched types"); if (E->isValueDependent()) return AnalyzeImpConvsInComparison(S, E); Expr *LHS = E->getLHS()->IgnoreParenImpCasts(); Expr *RHS = E->getRHS()->IgnoreParenImpCasts(); bool IsComparisonConstant = false; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (T->isIntegralType(S.Context)) { llvm::APSInt RHSValue; bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); llvm::APSInt LHSValue; bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); if (IsRHSIntegralLiteral && !IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, RHS, LHS, RHSValue, true); else if (!IsRHSIntegralLiteral && IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, LHS, RHS, LHSValue, false); else IsComparisonConstant = (IsRHSIntegralLiteral && IsLHSIntegralLiteral); } else if (!T->hasUnsignedIntegerRepresentation()) IsComparisonConstant = E->isIntegerConstantExpr(S.Context); // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. // // We also don't care about value-dependent expressions or expressions // whose result is a constant. if (!T->hasUnsignedIntegerRepresentation() || IsComparisonConstant) return AnalyzeImpConvsInComparison(S, E); // Check to see if one of the (unmodified) operands is of different // signedness. Expr *signedOperand, *unsignedOperand; if (LHS->getType()->hasSignedIntegerRepresentation()) { assert(!RHS->getType()->hasSignedIntegerRepresentation() && "unsigned comparison between two signed integer expressions?"); signedOperand = LHS; unsignedOperand = RHS; } else if (RHS->getType()->hasSignedIntegerRepresentation()) { signedOperand = RHS; unsignedOperand = LHS; } else { CheckTrivialUnsignedComparison(S, E); return AnalyzeImpConvsInComparison(S, E); } // Otherwise, calculate the effective range of the signed operand. IntRange signedRange = GetExprRange(S.Context, signedOperand); // Go ahead and analyze implicit conversions in the operands. Note // that we skip the implicit conversions on both sides. AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc()); AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc()); // If the signed range is non-negative, -Wsign-compare won't fire, // but we should still check for comparisons which are always true // or false. if (signedRange.NonNegative) return CheckTrivialUnsignedComparison(S, E); // For (in)equality comparisons, if the unsigned operand is a // constant which cannot collide with a overflowed signed operand, // then reinterpreting the signed operand as unsigned will not // change the result of the comparison. if (E->isEqualityOp()) { unsigned comparisonWidth = S.Context.getIntWidth(T); IntRange unsignedRange = GetExprRange(S.Context, unsignedOperand); // We should never be unable to prove that the unsigned operand is // non-negative. assert(unsignedRange.NonNegative && "unsigned range includes negative?"); if (unsignedRange.Width < comparisonWidth) return; } S.DiagRuntimeBehavior(E->getOperatorLoc(), E, S.PDiag(diag::warn_mixed_sign_comparison) << LHS->getType() << RHS->getType() << LHS->getSourceRange() << RHS->getSourceRange()); } /// Analyzes an attempt to assign the given value to a bitfield. /// /// Returns true if there was something fishy about the attempt. static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { assert(Bitfield->isBitField()); if (Bitfield->isInvalidDecl()) return false; // White-list bool bitfields. if (Bitfield->getType()->isBooleanType()) return false; // Ignore value- or type-dependent expressions. if (Bitfield->getBitWidth()->isValueDependent() || Bitfield->getBitWidth()->isTypeDependent() || Init->isValueDependent() || Init->isTypeDependent()) return false; Expr *OriginalInit = Init->IgnoreParenImpCasts(); llvm::APSInt Value; if (!OriginalInit->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) return false; unsigned OriginalWidth = Value.getBitWidth(); unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); if (OriginalWidth <= FieldWidth) return false; // Compute the value which the bitfield will contain. llvm::APSInt TruncatedValue = Value.trunc(FieldWidth); TruncatedValue.setIsSigned(Bitfield->getType()->isSignedIntegerType()); // Check whether the stored value is equal to the original value. TruncatedValue = TruncatedValue.extend(OriginalWidth); if (llvm::APSInt::isSameValue(Value, TruncatedValue)) return false; // Special-case bitfields of width 1: booleans are naturally 0/1, and // therefore don't strictly fit into a signed bitfield of width 1. if (FieldWidth == 1 && Value == 1) return false; std::string PrettyValue = Value.toString(10); std::string PrettyTrunc = TruncatedValue.toString(10); S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant) << PrettyValue << PrettyTrunc << OriginalInit->getType() << Init->getSourceRange(); return true; } /// Analyze the given simple or compound assignment for warning-worthy /// operations. static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { // Just recurse on the LHS. AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); // We want to recurse on the RHS as normal unless we're assigning to // a bitfield. if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) { if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(), E->getOperatorLoc())) { // Recurse, ignoring any implicit conversions on the RHS. return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(), E->getOperatorLoc()); } } AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { if (pruneControlFlow) { S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext)); return; } S.Diag(E->getExprLoc(), diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow); } /// Diagnose an implicit cast from a literal expression. Does not warn when the /// cast wouldn't lose information. void DiagnoseFloatingLiteralImpCast(Sema &S, FloatingLiteral *FL, QualType T, SourceLocation CContext) { // Try to convert the literal exactly to an integer. If we can, don't warn. bool isExact = false; const llvm::APFloat &Value = FL->getValue(); llvm::APSInt IntegerValue(S.Context.getIntWidth(T), T->hasUnsignedIntegerRepresentation()); if (Value.convertToInteger(IntegerValue, llvm::APFloat::rmTowardZero, &isExact) == llvm::APFloat::opOK && isExact) return; // FIXME: Force the precision of the source value down so we don't print // digits which are usually useless (we don't really care here if we // truncate a digit by accident in edge cases). Ideally, APFloat::toString // would automatically print the shortest representation, but it's a bit // tricky to implement. SmallString<16> PrettySourceValue; unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics()); precision = (precision * 59 + 195) / 196; Value.toString(PrettySourceValue, precision); SmallString<16> PrettyTargetValue; if (T->isSpecificBuiltinType(BuiltinType::Bool)) PrettyTargetValue = IntegerValue == 0 ? "false" : "true"; else IntegerValue.toString(PrettyTargetValue); S.Diag(FL->getExprLoc(), diag::warn_impcast_literal_float_to_integer) << FL->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << FL->getSourceRange() << SourceRange(CContext); } std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { if (!Range.Width) return "0"; llvm::APSInt ValueInRange = Value; ValueInRange.setIsSigned(!Range.NonNegative); ValueInRange = ValueInRange.trunc(Range.Width); return ValueInRange.toString(10); } static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { if (!isa(Ex)) return false; Expr *InnerE = Ex->IgnoreParenImpCasts(); const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr(); const Type *Source = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (Target->isDependentType()) return false; const BuiltinType *FloatCandidateBT = dyn_cast(ToBool ? Source : Target); const Type *BoolCandidateType = ToBool ? Target : Source; return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) && FloatCandidateBT && (FloatCandidateBT->isFloatingPoint())); } void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { unsigned NumArgs = TheCall->getNumArgs(); for (unsigned i = 0; i < NumArgs; ++i) { Expr *CurrA = TheCall->getArg(i); if (!IsImplicitBoolFloatConversion(S, CurrA, true)) continue; bool IsSwapped = ((i > 0) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false)); IsSwapped |= ((i < (NumArgs - 1)) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false)); if (IsSwapped) { // Warn on this floating-point to bool conversion. DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(), CurrA->getType(), CC, diag::warn_impcast_floating_point_to_bool); } } } void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = 0) { if (E->isTypeDependent() || E->isValueDependent()) return; const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr(); const Type *Target = S.Context.getCanonicalType(T).getTypePtr(); if (Source == Target) return; if (Target->isDependentType()) return; // If the conversion context location is invalid don't complain. We also // don't want to emit a warning if the issue occurs from the expansion of // a system macro. The problem is that 'getSpellingLoc()' is slow, so we // delay this check as long as possible. Once we detect we are in that // scenario, we just return. if (CC.isInvalid()) return; // Diagnose implicit casts to bool. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) { if (isa(E)) // Warn on string literal to bool. Checks for string literals in logical // expressions, for instances, assert(0 && "error here"), is prevented // by a check in AnalyzeImplicitConversions(). return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_string_literal_to_bool); if (Source->isFunctionType()) { // Warn on function to bool. Checks free functions and static member // functions. Weakly imported functions are excluded from the check, // since it's common to test their value to check whether the linker // found a definition for them. ValueDecl *D = 0; if (DeclRefExpr* R = dyn_cast(E)) { D = R->getDecl(); } else if (MemberExpr *M = dyn_cast(E)) { D = M->getMemberDecl(); } if (D && !D->isWeak()) { if (FunctionDecl* F = dyn_cast(D)) { S.Diag(E->getExprLoc(), diag::warn_impcast_function_to_bool) << F << E->getSourceRange() << SourceRange(CC); S.Diag(E->getExprLoc(), diag::note_function_to_bool_silence) << FixItHint::CreateInsertion(E->getExprLoc(), "&"); QualType ReturnType; UnresolvedSet<4> NonTemplateOverloads; S.tryExprAsCall(*E, ReturnType, NonTemplateOverloads); if (!ReturnType.isNull() && ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) S.Diag(E->getExprLoc(), diag::note_function_to_bool_call) << FixItHint::CreateInsertion( S.getPreprocessor().getLocForEndOfToken(E->getLocEnd()), "()"); return; } } } } // Strip vector types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar); } // If the vector cast is cast between two vectors of the same size, it is // a bitcast, not a conversion. if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target)) return; Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } // Strip complex types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_complex_scalar); } Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } const BuiltinType *SourceBT = dyn_cast(Source); const BuiltinType *TargetBT = dyn_cast(Target); // If the source is floating point... if (SourceBT && SourceBT->isFloatingPoint()) { // ...and the target is floating point... if (TargetBT && TargetBT->isFloatingPoint()) { // ...then warn if we're dropping FP rank. // Builtin FP kinds are ordered by increasing FP rank. if (SourceBT->getKind() > TargetBT->getKind()) { // Don't warn about float constants that are precisely // representable in the target type. Expr::EvalResult result; if (E->EvaluateAsRValue(result, S.Context)) { // Value might be a float, a float vector, or a float complex. if (IsSameFloatAfterCast(result.Val, S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)), S.Context.getFloatTypeSemantics(QualType(SourceBT, 0)))) return; } if (S.SourceMgr.isInSystemMacro(CC)) return; DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision); } return; } // If the target is integral, always warn. if (TargetBT && TargetBT->isInteger()) { if (S.SourceMgr.isInSystemMacro(CC)) return; Expr *InnerE = E->IgnoreParenImpCasts(); // We also want to warn on, e.g., "int i = -1.234" if (UnaryOperator *UOp = dyn_cast(InnerE)) if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); if (FloatingLiteral *FL = dyn_cast(InnerE)) { DiagnoseFloatingLiteralImpCast(S, FL, T, CC); } else { DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_integer); } } // If the target is bool, warn if expr is a function or method call. if (Target->isSpecificBuiltinType(BuiltinType::Bool) && isa(E)) { // Check last argument of function call to see if it is an // implicit cast from a type matching the type the result // is being cast to. CallExpr *CEx = cast(E); unsigned NumArgs = CEx->getNumArgs(); if (NumArgs > 0) { Expr *LastA = CEx->getArg(NumArgs - 1); Expr *InnerE = LastA->IgnoreParenImpCasts(); const Type *InnerType = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (isa(LastA) && (InnerType == Target)) { // Warn on this floating-point to bool conversion DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_floating_point_to_bool); } } } return; } if ((E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) == Expr::NPCK_GNUNull) && !Target->isAnyPointerType() && !Target->isBlockPointerType() && !Target->isMemberPointerType() && Target->isScalarType() && !Target->isNullPtrType()) { SourceLocation Loc = E->getSourceRange().getBegin(); if (Loc.isMacroID()) Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; if (!Loc.isMacroID() || CC.isMacroID()) S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) << T << clang::SourceRange(CC) << FixItHint::CreateReplacement(Loc, S.getFixItZeroLiteralForType(T, Loc)); } if (!Source->isIntegerType() || !Target->isIntegerType()) return; // TODO: remove this early return once the false positives for constant->bool // in templates, macros, etc, are reduced or removed. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) return; IntRange SourceRange = GetExprRange(S.Context, E); IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target); if (SourceRange.Width > TargetRange.Width) { // If the source is a constant, use a default-on diagnostic. // TODO: this should happen for bitfield stores, too. llvm::APSInt Value(32); if (E->isIntegerConstantExpr(Value, S.Context)) { if (S.SourceMgr.isInSystemMacro(CC)) return; std::string PrettySourceValue = Value.toString(10); std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag::warn_impcast_integer_precision_constant) << PrettySourceValue << PrettyTargetValue << E->getType() << T << E->getSourceRange() << clang::SourceRange(CC)); return; } // People want to build with -Wshorten-64-to-32 and not -Wconversion. if (S.SourceMgr.isInSystemMacro(CC)) return; if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64) return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32, /* pruneControlFlow */ true); return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision); } if ((TargetRange.NonNegative && !SourceRange.NonNegative) || (!TargetRange.NonNegative && SourceRange.NonNegative && SourceRange.Width == TargetRange.Width)) { if (S.SourceMgr.isInSystemMacro(CC)) return; unsigned DiagID = diag::warn_impcast_integer_sign; // Traditionally, gcc has warned about this under -Wsign-compare. // We also want to warn about it in -Wconversion. // So if -Wconversion is off, use a completely identical diagnostic // in the sign-compare group. // The conditional-checking code will if (ICContext) { DiagID = diag::warn_impcast_integer_sign_conditional; *ICContext = true; } return DiagnoseImpCast(S, E, T, CC, DiagID); } // Diagnose conversions between different enumeration types. // In C, we pretend that the type of an EnumConstantDecl is its enumeration // type, to give us better diagnostics. QualType SourceType = E->getType(); if (!S.getLangOpts().CPlusPlus) { if (DeclRefExpr *DRE = dyn_cast(E)) if (EnumConstantDecl *ECD = dyn_cast(DRE->getDecl())) { EnumDecl *Enum = cast(ECD->getDeclContext()); SourceType = S.Context.getTypeDeclType(Enum); Source = S.Context.getCanonicalType(SourceType).getTypePtr(); } } if (const EnumType *SourceEnum = Source->getAs()) if (const EnumType *TargetEnum = Target->getAs()) if (SourceEnum->getDecl()->hasNameForLinkage() && TargetEnum->getDecl()->hasNameForLinkage() && SourceEnum != TargetEnum) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, SourceType, T, CC, diag::warn_impcast_different_enum_types); } return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { E = E->IgnoreParenImpCasts(); if (isa(E)) return CheckConditionalOperator(S, cast(E), CC, T); AnalyzeImplicitConversions(S, E, CC); if (E->getType() != T) return CheckImplicitConversion(S, E, T, CC, &ICContext); return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { AnalyzeImplicitConversions(S, E->getCond(), CC); bool Suspicious = false; CheckConditionalOperand(S, E->getTrueExpr(), T, CC, Suspicious); CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious); // If -Wconversion would have warned about either of the candidates // for a signedness conversion to the context type... if (!Suspicious) return; // ...but it's currently ignored... if (S.Diags.getDiagnosticLevel(diag::warn_impcast_integer_sign_conditional, CC)) return; // ...then check whether it would have warned about either of the // candidates for a signedness conversion to the condition type. if (E->getType() == T) return; Suspicious = false; CheckImplicitConversion(S, E->getTrueExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); if (!Suspicious) CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); } /// AnalyzeImplicitConversions - Find and report any interesting /// implicit conversions in the given expression. There are a couple /// of competing diagnostics here, -Wconversion and -Wsign-compare. void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { QualType T = OrigE->getType(); Expr *E = OrigE->IgnoreParenImpCasts(); if (E->isTypeDependent() || E->isValueDependent()) return; // For conditional operators, we analyze the arguments as if they // were being fed directly into the output. if (isa(E)) { ConditionalOperator *CO = cast(E); CheckConditionalOperator(S, CO, CC, T); return; } // Check implicit argument conversions for function calls. if (CallExpr *Call = dyn_cast(E)) CheckImplicitArgumentConversions(S, Call, CC); // Go ahead and check any implicit conversions we might have skipped. // The non-canonical typecheck is just an optimization; // CheckImplicitConversion will filter out dead implicit conversions. if (E->getType() != T) CheckImplicitConversion(S, E, T, CC); // Now continue drilling into this expression. if (PseudoObjectExpr * POE = dyn_cast(E)) { if (POE->getResultExpr()) E = POE->getResultExpr(); } if (const OpaqueValueExpr *OVE = dyn_cast(E)) return AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC); // Skip past explicit casts. if (isa(E)) { E = cast(E)->getSubExpr()->IgnoreParenImpCasts(); return AnalyzeImplicitConversions(S, E, CC); } if (BinaryOperator *BO = dyn_cast(E)) { // Do a somewhat different check with comparison operators. if (BO->isComparisonOp()) return AnalyzeComparison(S, BO); // And with simple assignments. if (BO->getOpcode() == BO_Assign) return AnalyzeAssignment(S, BO); } // These break the otherwise-useful invariant below. Fortunately, // we don't really need to recurse into them, because any internal // expressions should have been analyzed already when they were // built into statements. if (isa(E)) return; // Don't descend into unevaluated contexts. if (isa(E)) return; // Now just recurse over the expression's children. CC = E->getExprLoc(); BinaryOperator *BO = dyn_cast(E); bool IsLogicalOperator = BO && BO->isLogicalOp(); for (Stmt::child_range I = E->children(); I; ++I) { Expr *ChildExpr = dyn_cast_or_null(*I); if (!ChildExpr) continue; if (IsLogicalOperator && isa(ChildExpr->IgnoreParenImpCasts())) // Ignore checking string literals that are in logical operators. continue; AnalyzeImplicitConversions(S, ChildExpr, CC); } } } // end anonymous namespace /// Diagnoses "dangerous" implicit conversions within the given /// expression (which is a full expression). Implements -Wconversion /// and -Wsign-compare. /// /// \param CC the "context" location of the implicit conversion, i.e. /// the most location of the syntactic entity requiring the implicit /// conversion void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) { // Don't diagnose in unevaluated contexts. if (isUnevaluatedContext()) return; // Don't diagnose for value- or type-dependent expressions. if (E->isTypeDependent() || E->isValueDependent()) return; // Check for array bounds violations in cases where the check isn't triggered // elsewhere for other Expr types (like BinaryOperators), e.g. when an // ArraySubscriptExpr is on the RHS of a variable initialization. CheckArrayAccess(E); // This is not the right CC for (e.g.) a variable initialization. AnalyzeImplicitConversions(*this, E, CC); } /// Diagnose when expression is an integer constant expression and its evaluation /// results in integer overflow void Sema::CheckForIntOverflow (Expr *E) { if (isa(E->IgnoreParens())) E->EvaluateForOverflow(Context); } namespace { /// \brief Visitor for expressions which looks for unsequenced operations on the /// same object. class SequenceChecker : public EvaluatedExprVisitor { typedef EvaluatedExprVisitor Base; /// \brief A tree of sequenced regions within an expression. Two regions are /// unsequenced if one is an ancestor or a descendent of the other. When we /// finish processing an expression with sequencing, such as a comma /// expression, we fold its tree nodes into its parent, since they are /// unsequenced with respect to nodes we will visit later. class SequenceTree { struct Value { explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {} unsigned Parent : 31; bool Merged : 1; }; SmallVector Values; public: /// \brief A region within an expression which may be sequenced with respect /// to some other region. class Seq { explicit Seq(unsigned N) : Index(N) {} unsigned Index; friend class SequenceTree; public: Seq() : Index(0) {} }; SequenceTree() { Values.push_back(Value(0)); } Seq root() const { return Seq(0); } /// \brief Create a new sequence of operations, which is an unsequenced /// subset of \p Parent. This sequence of operations is sequenced with /// respect to other children of \p Parent. Seq allocate(Seq Parent) { Values.push_back(Value(Parent.Index)); return Seq(Values.size() - 1); } /// \brief Merge a sequence of operations into its parent. void merge(Seq S) { Values[S.Index].Merged = true; } /// \brief Determine whether two operations are unsequenced. This operation /// is asymmetric: \p Cur should be the more recent sequence, and \p Old /// should have been merged into its parent as appropriate. bool isUnsequenced(Seq Cur, Seq Old) { unsigned C = representative(Cur.Index); unsigned Target = representative(Old.Index); while (C >= Target) { if (C == Target) return true; C = Values[C].Parent; } return false; } private: /// \brief Pick a representative for a sequence. unsigned representative(unsigned K) { if (Values[K].Merged) // Perform path compression as we go. return Values[K].Parent = representative(Values[K].Parent); return K; } }; /// An object for which we can track unsequenced uses. typedef NamedDecl *Object; /// Different flavors of object usage which we track. We only track the /// least-sequenced usage of each kind. enum UsageKind { /// A read of an object. Multiple unsequenced reads are OK. UK_Use, /// A modification of an object which is sequenced before the value /// computation of the expression, such as ++n in C++. UK_ModAsValue, /// A modification of an object which is not sequenced before the value /// computation of the expression, such as n++. UK_ModAsSideEffect, UK_Count = UK_ModAsSideEffect + 1 }; struct Usage { Usage() : Use(0), Seq() {} Expr *Use; SequenceTree::Seq Seq; }; struct UsageInfo { UsageInfo() : Diagnosed(false) {} Usage Uses[UK_Count]; /// Have we issued a diagnostic for this variable already? bool Diagnosed; }; typedef llvm::SmallDenseMap UsageInfoMap; Sema &SemaRef; /// Sequenced regions within the expression. SequenceTree Tree; /// Declaration modifications and references which we have seen. UsageInfoMap UsageMap; /// The region we are currently within. SequenceTree::Seq Region; /// Filled in with declarations which were modified as a side-effect /// (that is, post-increment operations). SmallVectorImpl > *ModAsSideEffect; /// Expressions to check later. We defer checking these to reduce /// stack usage. SmallVectorImpl &WorkList; /// RAII object wrapping the visitation of a sequenced subexpression of an /// expression. At the end of this process, the side-effects of the evaluation /// become sequenced with respect to the value computation of the result, so /// we downgrade any UK_ModAsSideEffect within the evaluation to /// UK_ModAsValue. struct SequencedSubexpression { SequencedSubexpression(SequenceChecker &Self) : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) { Self.ModAsSideEffect = &ModAsSideEffect; } ~SequencedSubexpression() { for (unsigned I = 0, E = ModAsSideEffect.size(); I != E; ++I) { UsageInfo &U = Self.UsageMap[ModAsSideEffect[I].first]; U.Uses[UK_ModAsSideEffect] = ModAsSideEffect[I].second; Self.addUsage(U, ModAsSideEffect[I].first, ModAsSideEffect[I].second.Use, UK_ModAsValue); } Self.ModAsSideEffect = OldModAsSideEffect; } SequenceChecker &Self; SmallVector, 4> ModAsSideEffect; SmallVectorImpl > *OldModAsSideEffect; }; /// RAII object wrapping the visitation of a subexpression which we might /// choose to evaluate as a constant. If any subexpression is evaluated and /// found to be non-constant, this allows us to suppress the evaluation of /// the outer expression. class EvaluationTracker { public: EvaluationTracker(SequenceChecker &Self) : Self(Self), Prev(Self.EvalTracker), EvalOK(true) { Self.EvalTracker = this; } ~EvaluationTracker() { Self.EvalTracker = Prev; if (Prev) Prev->EvalOK &= EvalOK; } bool evaluate(const Expr *E, bool &Result) { if (!EvalOK || E->isValueDependent()) return false; EvalOK = E->EvaluateAsBooleanCondition(Result, Self.SemaRef.Context); return EvalOK; } private: SequenceChecker &Self; EvaluationTracker *Prev; bool EvalOK; } *EvalTracker; /// \brief Find the object which is produced by the specified expression, /// if any. Object getObject(Expr *E, bool Mod) const { E = E->IgnoreParenCasts(); if (UnaryOperator *UO = dyn_cast(E)) { if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec)) return getObject(UO->getSubExpr(), Mod); } else if (BinaryOperator *BO = dyn_cast(E)) { if (BO->getOpcode() == BO_Comma) return getObject(BO->getRHS(), Mod); if (Mod && BO->isAssignmentOp()) return getObject(BO->getLHS(), Mod); } else if (MemberExpr *ME = dyn_cast(E)) { // FIXME: Check for more interesting cases, like "x.n = ++x.n". if (isa(ME->getBase()->IgnoreParenCasts())) return ME->getMemberDecl(); } else if (DeclRefExpr *DRE = dyn_cast(E)) // FIXME: If this is a reference, map through to its value. return DRE->getDecl(); return 0; } /// \brief Note that an object was modified or used by an expression. void addUsage(UsageInfo &UI, Object O, Expr *Ref, UsageKind UK) { Usage &U = UI.Uses[UK]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) { if (UK == UK_ModAsSideEffect && ModAsSideEffect) ModAsSideEffect->push_back(std::make_pair(O, U)); U.Use = Ref; U.Seq = Region; } } /// \brief Check whether a modification or use conflicts with a prior usage. void checkUsage(Object O, UsageInfo &UI, Expr *Ref, UsageKind OtherKind, bool IsModMod) { if (UI.Diagnosed) return; const Usage &U = UI.Uses[OtherKind]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) return; Expr *Mod = U.Use; Expr *ModOrUse = Ref; if (OtherKind == UK_Use) std::swap(Mod, ModOrUse); SemaRef.Diag(Mod->getExprLoc(), IsModMod ? diag::warn_unsequenced_mod_mod : diag::warn_unsequenced_mod_use) << O << SourceRange(ModOrUse->getExprLoc()); UI.Diagnosed = true; } void notePreUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; // Uses conflict with other modifications. checkUsage(O, U, Use, UK_ModAsValue, false); } void notePostUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, false); addUsage(U, O, Use, UK_Use); } void notePreMod(Object O, Expr *Mod) { UsageInfo &U = UsageMap[O]; // Modifications conflict with other modifications and with uses. checkUsage(O, U, Mod, UK_ModAsValue, true); checkUsage(O, U, Mod, UK_Use, false); } void notePostMod(Object O, Expr *Use, UsageKind UK) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, true); addUsage(U, O, Use, UK); } public: SequenceChecker(Sema &S, Expr *E, SmallVectorImpl &WorkList) : Base(S.Context), SemaRef(S), Region(Tree.root()), ModAsSideEffect(0), WorkList(WorkList), EvalTracker(0) { Visit(E); } void VisitStmt(Stmt *S) { // Skip all statements which aren't expressions for now. } void VisitExpr(Expr *E) { // By default, just recurse to evaluated subexpressions. Base::VisitStmt(E); } void VisitCastExpr(CastExpr *E) { Object O = Object(); if (E->getCastKind() == CK_LValueToRValue) O = getObject(E->getSubExpr(), false); if (O) notePreUse(O, E); VisitExpr(E); if (O) notePostUse(O, E); } void VisitBinComma(BinaryOperator *BO) { // C++11 [expr.comma]p1: // Every value computation and side effect associated with the left // expression is sequenced before every value computation and side // effect associated with the right expression. SequenceTree::Seq LHS = Tree.allocate(Region); SequenceTree::Seq RHS = Tree.allocate(Region); SequenceTree::Seq OldRegion = Region; { SequencedSubexpression SeqLHS(*this); Region = LHS; Visit(BO->getLHS()); } Region = RHS; Visit(BO->getRHS()); Region = OldRegion; // Forget that LHS and RHS are sequenced. They are both unsequenced // with respect to other stuff. Tree.merge(LHS); Tree.merge(RHS); } void VisitBinAssign(BinaryOperator *BO) { // The modification is sequenced after the value computation of the LHS // and RHS, so check it before inspecting the operands and update the // map afterwards. Object O = getObject(BO->getLHS(), true); if (!O) return VisitExpr(BO); notePreMod(O, BO); // C++11 [expr.ass]p7: // E1 op= E2 is equivalent to E1 = E1 op E2, except that E1 is evaluated // only once. // // Therefore, for a compound assignment operator, O is considered used // everywhere except within the evaluation of E1 itself. if (isa(BO)) notePreUse(O, BO); Visit(BO->getLHS()); if (isa(BO)) notePostUse(O, BO); Visit(BO->getRHS()); // C++11 [expr.ass]p1: // the assignment is sequenced [...] before the value computation of the // assignment expression. // C11 6.5.16/3 has no such rule. notePostMod(O, BO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitCompoundAssignOperator(CompoundAssignOperator *CAO) { VisitBinAssign(CAO); } void VisitUnaryPreInc(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreDec(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); // C++11 [expr.pre.incr]p1: // the expression ++x is equivalent to x+=1 notePostMod(O, UO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitUnaryPostInc(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostDec(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); notePostMod(O, UO, UK_ModAsSideEffect); } /// Don't visit the RHS of '&&' or '||' if it might not be evaluated. void VisitBinLOr(BinaryOperator *BO) { // The side-effects of the LHS of an '&&' are sequenced before the // value computation of the RHS, and hence before the value computation // of the '&&' itself, unless the LHS evaluates to zero. We treat them // as if they were unconditionally sequenced. EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (!Result) Visit(BO->getRHS()); } else { // Check for unsequenced operations in the RHS, treating it as an // entirely separate evaluation. // // FIXME: If there are operations in the RHS which are unsequenced // with respect to operations outside the RHS, and those operations // are unconditionally evaluated, diagnose them. WorkList.push_back(BO->getRHS()); } } void VisitBinLAnd(BinaryOperator *BO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (Result) Visit(BO->getRHS()); } else { WorkList.push_back(BO->getRHS()); } } // Only visit the condition, unless we can be sure which subexpression will // be chosen. void VisitAbstractConditionalOperator(AbstractConditionalOperator *CO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(CO->getCond()); } bool Result; if (Eval.evaluate(CO->getCond(), Result)) Visit(Result ? CO->getTrueExpr() : CO->getFalseExpr()); else { WorkList.push_back(CO->getTrueExpr()); WorkList.push_back(CO->getFalseExpr()); } } void VisitCallExpr(CallExpr *CE) { // C++11 [intro.execution]p15: // When calling a function [...], every value computation and side effect // associated with any argument expression, or with the postfix expression // designating the called function, is sequenced before execution of every // expression or statement in the body of the function [and thus before // the value computation of its result]. SequencedSubexpression Sequenced(*this); Base::VisitCallExpr(CE); // FIXME: CXXNewExpr and CXXDeleteExpr implicitly call functions. } void VisitCXXConstructExpr(CXXConstructExpr *CCE) { // This is a call, so all subexpressions are sequenced before the result. SequencedSubexpression Sequenced(*this); if (!CCE->isListInitialization()) return VisitExpr(CCE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (CXXConstructExpr::arg_iterator I = CCE->arg_begin(), E = CCE->arg_end(); I != E; ++I) { Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(*I); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } void VisitInitListExpr(InitListExpr *ILE) { if (!SemaRef.getLangOpts().CPlusPlus11) return VisitExpr(ILE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (unsigned I = 0; I < ILE->getNumInits(); ++I) { Expr *E = ILE->getInit(I); if (!E) continue; Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(E); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } }; } void Sema::CheckUnsequencedOperations(Expr *E) { SmallVector WorkList; WorkList.push_back(E); while (!WorkList.empty()) { Expr *Item = WorkList.pop_back_val(); SequenceChecker(*this, Item, WorkList); } } void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc, bool IsConstexpr) { CheckImplicitConversions(E, CheckLoc); CheckUnsequencedOperations(E); if (!IsConstexpr && !E->isValueDependent()) CheckForIntOverflow(E); } void Sema::CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *BitField, Expr *Init) { (void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc); } /// CheckParmsForFunctionDef - Check that the parameters of the given /// function are appropriate for the definition of a function. This /// takes care of any checks that cannot be performed on the /// declaration itself, e.g., that the types of each of the function /// parameters are complete. bool Sema::CheckParmsForFunctionDef(ParmVarDecl *const *P, ParmVarDecl *const *PEnd, bool CheckParameterNames) { bool HasInvalidParm = false; for (; P != PEnd; ++P) { ParmVarDecl *Param = *P; // C99 6.7.5.3p4: the parameters in a parameter type list in a // function declarator that is part of a function definition of // that function shall not have incomplete type. // // This is also C++ [dcl.fct]p6. if (!Param->isInvalidDecl() && RequireCompleteType(Param->getLocation(), Param->getType(), diag::err_typecheck_decl_incomplete_type)) { Param->setInvalidDecl(); HasInvalidParm = true; } // C99 6.9.1p5: If the declarator includes a parameter type list, the // declaration of each parameter shall include an identifier. if (CheckParameterNames && Param->getIdentifier() == 0 && !Param->isImplicit() && !getLangOpts().CPlusPlus) Diag(Param->getLocation(), diag::err_parameter_name_omitted); // C99 6.7.5.3p12: // If the function declarator is not part of a definition of that // function, parameters may have incomplete type and may use the [*] // notation in their sequences of declarator specifiers to specify // variable length array types. QualType PType = Param->getOriginalType(); while (const ArrayType *AT = Context.getAsArrayType(PType)) { if (AT->getSizeModifier() == ArrayType::Star) { // FIXME: This diagnostic should point the '[*]' if source-location // information is added for it. Diag(Param->getLocation(), diag::err_array_star_in_function_definition); break; } PType= AT->getElementType(); } // MSVC destroys objects passed by value in the callee. Therefore a // function definition which takes such a parameter must be able to call the // object's destructor. if (getLangOpts().CPlusPlus && Context.getTargetInfo().getCXXABI().isArgumentDestroyedByCallee()) { if (const RecordType *RT = Param->getType()->getAs()) FinalizeVarWithDestructor(Param, RT); } } return HasInvalidParm; } /// CheckCastAlign - Implements -Wcast-align, which warns when a /// pointer cast increases the alignment requirements. void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) { // This is actually a lot of work to potentially be doing on every // cast; don't do it if we're ignoring -Wcast_align (as is the default). if (getDiagnostics().getDiagnosticLevel(diag::warn_cast_align, TRange.getBegin()) == DiagnosticsEngine::Ignored) return; // Ignore dependent types. if (T->isDependentType() || Op->getType()->isDependentType()) return; // Require that the destination be a pointer type. const PointerType *DestPtr = T->getAs(); if (!DestPtr) return; // If the destination has alignment 1, we're done. QualType DestPointee = DestPtr->getPointeeType(); if (DestPointee->isIncompleteType()) return; CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee); if (DestAlign.isOne()) return; // Require that the source be a pointer type. const PointerType *SrcPtr = Op->getType()->getAs(); if (!SrcPtr) return; QualType SrcPointee = SrcPtr->getPointeeType(); // Whitelist casts from cv void*. We already implicitly // whitelisted casts to cv void*, since they have alignment 1. // Also whitelist casts involving incomplete types, which implicitly // includes 'void'. if (SrcPointee->isIncompleteType()) return; CharUnits SrcAlign = Context.getTypeAlignInChars(SrcPointee); if (SrcAlign >= DestAlign) return; Diag(TRange.getBegin(), diag::warn_cast_align) << Op->getType() << T << static_cast(SrcAlign.getQuantity()) << static_cast(DestAlign.getQuantity()) << TRange << Op->getSourceRange(); } static const Type* getElementType(const Expr *BaseExpr) { const Type* EltType = BaseExpr->getType().getTypePtr(); if (EltType->isAnyPointerType()) return EltType->getPointeeType().getTypePtr(); else if (EltType->isArrayType()) return EltType->getBaseElementTypeUnsafe(); return EltType; } /// \brief Check whether this array fits the idiom of a size-one tail padded /// array member of a struct. /// /// We avoid emitting out-of-bounds access warnings for such arrays as they are /// commonly used to emulate flexible arrays in C89 code. static bool IsTailPaddedMemberArray(Sema &S, llvm::APInt Size, const NamedDecl *ND) { if (Size != 1 || !ND) return false; const FieldDecl *FD = dyn_cast(ND); if (!FD) return false; // Don't consider sizes resulting from macro expansions or template argument // substitution to form C89 tail-padded arrays. TypeSourceInfo *TInfo = FD->getTypeSourceInfo(); while (TInfo) { TypeLoc TL = TInfo->getTypeLoc(); // Look through typedefs. if (TypedefTypeLoc TTL = TL.getAs()) { const TypedefNameDecl *TDL = TTL.getTypedefNameDecl(); TInfo = TDL->getTypeSourceInfo(); continue; } if (ConstantArrayTypeLoc CTL = TL.getAs()) { const Expr *SizeExpr = dyn_cast(CTL.getSizeExpr()); if (!SizeExpr || SizeExpr->getExprLoc().isMacroID()) return false; } break; } const RecordDecl *RD = dyn_cast(FD->getDeclContext()); if (!RD) return false; if (RD->isUnion()) return false; if (const CXXRecordDecl *CRD = dyn_cast(RD)) { if (!CRD->isStandardLayout()) return false; } // See if this is the last field decl in the record. const Decl *D = FD; while ((D = D->getNextDeclInContext())) if (isa(D)) return false; return true; } void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, const ArraySubscriptExpr *ASE, bool AllowOnePastEnd, bool IndexNegated) { IndexExpr = IndexExpr->IgnoreParenImpCasts(); if (IndexExpr->isValueDependent()) return; const Type *EffectiveType = getElementType(BaseExpr); BaseExpr = BaseExpr->IgnoreParenCasts(); const ConstantArrayType *ArrayTy = Context.getAsConstantArrayType(BaseExpr->getType()); if (!ArrayTy) return; llvm::APSInt index; if (!IndexExpr->EvaluateAsInt(index, Context)) return; if (IndexNegated) index = -index; const NamedDecl *ND = NULL; if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); if (index.isUnsigned() || !index.isNegative()) { llvm::APInt size = ArrayTy->getSize(); if (!size.isStrictlyPositive()) return; const Type* BaseType = getElementType(BaseExpr); if (BaseType != EffectiveType) { // Make sure we're comparing apples to apples when comparing index to size uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType); uint64_t array_typesize = Context.getTypeSize(BaseType); // Handle ptrarith_typesize being zero, such as when casting to void* if (!ptrarith_typesize) ptrarith_typesize = 1; if (ptrarith_typesize != array_typesize) { // There's a cast to a different size type involved uint64_t ratio = array_typesize / ptrarith_typesize; // TODO: Be smarter about handling cases where array_typesize is not a // multiple of ptrarith_typesize if (ptrarith_typesize * ratio == array_typesize) size *= llvm::APInt(size.getBitWidth(), ratio); } } if (size.getBitWidth() > index.getBitWidth()) index = index.zext(size.getBitWidth()); else if (size.getBitWidth() < index.getBitWidth()) size = size.zext(index.getBitWidth()); // For array subscripting the index must be less than size, but for pointer // arithmetic also allow the index (offset) to be equal to size since // computing the next address after the end of the array is legal and // commonly done e.g. in C++ iterators and range-based for loops. if (AllowOnePastEnd ? index.ule(size) : index.ult(size)) return; // Also don't warn for arrays of size 1 which are members of some // structure. These are often used to approximate flexible arrays in C89 // code. if (IsTailPaddedMemberArray(*this, size, ND)) return; // Suppress the warning if the subscript expression (as identified by the // ']' location) and the index expression are both from macro expansions // within a system header. if (ASE) { SourceLocation RBracketLoc = SourceMgr.getSpellingLoc( ASE->getRBracketLoc()); if (SourceMgr.isInSystemHeader(RBracketLoc)) { SourceLocation IndexLoc = SourceMgr.getSpellingLoc( IndexExpr->getLocStart()); if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc)) return; } } unsigned DiagID = diag::warn_ptr_arith_exceeds_bounds; if (ASE) DiagID = diag::warn_array_index_exceeds_bounds; DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << size.toString(10, true) << (unsigned)size.getLimitedValue(~0U) << IndexExpr->getSourceRange()); } else { unsigned DiagID = diag::warn_array_index_precedes_bounds; if (!ASE) { DiagID = diag::warn_ptr_arith_precedes_bounds; if (index.isNegative()) index = -index; } DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << IndexExpr->getSourceRange()); } if (!ND) { // Try harder to find a NamedDecl to point at in the note. while (const ArraySubscriptExpr *ASE = dyn_cast(BaseExpr)) BaseExpr = ASE->getBase()->IgnoreParenCasts(); if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); } if (ND) DiagRuntimeBehavior(ND->getLocStart(), BaseExpr, PDiag(diag::note_array_index_out_of_bounds) << ND->getDeclName()); } void Sema::CheckArrayAccess(const Expr *expr) { int AllowOnePastEnd = 0; while (expr) { expr = expr->IgnoreParenImpCasts(); switch (expr->getStmtClass()) { case Stmt::ArraySubscriptExprClass: { const ArraySubscriptExpr *ASE = cast(expr); CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE, AllowOnePastEnd > 0); return; } case Stmt::UnaryOperatorClass: { // Only unwrap the * and & unary operators const UnaryOperator *UO = cast(expr); expr = UO->getSubExpr(); switch (UO->getOpcode()) { case UO_AddrOf: AllowOnePastEnd++; break; case UO_Deref: AllowOnePastEnd--; break; default: return; } break; } case Stmt::ConditionalOperatorClass: { const ConditionalOperator *cond = cast(expr); if (const Expr *lhs = cond->getLHS()) CheckArrayAccess(lhs); if (const Expr *rhs = cond->getRHS()) CheckArrayAccess(rhs); return; } default: return; } } } //===--- CHECK: Objective-C retain cycles ----------------------------------// namespace { struct RetainCycleOwner { RetainCycleOwner() : Variable(0), Indirect(false) {} VarDecl *Variable; SourceRange Range; SourceLocation Loc; bool Indirect; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } /// Consider whether capturing the given variable can possibly lead to /// a retain cycle. static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) { // In ARC, it's captured strongly iff the variable has __strong // lifetime. In MRR, it's captured strongly if the variable is // __block and has an appropriate type. if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; owner.Variable = var; if (ref) owner.setLocsFrom(ref); return true; } static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) { while (true) { e = e->IgnoreParens(); if (CastExpr *cast = dyn_cast(e)) { switch (cast->getCastKind()) { case CK_BitCast: case CK_LValueBitCast: case CK_LValueToRValue: case CK_ARCReclaimReturnedObject: e = cast->getSubExpr(); continue; default: return false; } } if (ObjCIvarRefExpr *ref = dyn_cast(e)) { ObjCIvarDecl *ivar = ref->getDecl(); if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; // Try to find a retain cycle in the base. if (!findRetainCycleOwner(S, ref->getBase(), owner)) return false; if (ref->isFreeIvar()) owner.setLocsFrom(ref); owner.Indirect = true; return true; } if (DeclRefExpr *ref = dyn_cast(e)) { VarDecl *var = dyn_cast(ref->getDecl()); if (!var) return false; return considerVariable(var, ref, owner); } if (MemberExpr *member = dyn_cast(e)) { if (member->isArrow()) return false; // Don't count this as an indirect ownership. e = member->getBase(); continue; } if (PseudoObjectExpr *pseudo = dyn_cast(e)) { // Only pay attention to pseudo-objects on property references. ObjCPropertyRefExpr *pre = dyn_cast(pseudo->getSyntacticForm() ->IgnoreParens()); if (!pre) return false; if (pre->isImplicitProperty()) return false; ObjCPropertyDecl *property = pre->getExplicitProperty(); if (!property->isRetaining() && !(property->getPropertyIvarDecl() && property->getPropertyIvarDecl()->getType() .getObjCLifetime() == Qualifiers::OCL_Strong)) return false; owner.Indirect = true; if (pre->isSuperReceiver()) { owner.Variable = S.getCurMethodDecl()->getSelfDecl(); if (!owner.Variable) return false; owner.Loc = pre->getLocation(); owner.Range = pre->getSourceRange(); return true; } e = const_cast(cast(pre->getBase()) ->getSourceExpr()); continue; } // Array ivars? return false; } } namespace { struct FindCaptureVisitor : EvaluatedExprVisitor { FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Variable(variable), Capturer(0) {} VarDecl *Variable; Expr *Capturer; void VisitDeclRefExpr(DeclRefExpr *ref) { if (ref->getDecl() == Variable && !Capturer) Capturer = ref; } void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) { if (Capturer) return; Visit(ref->getBase()); if (Capturer && ref->isFreeIvar()) Capturer = ref; } void VisitBlockExpr(BlockExpr *block) { // Look inside nested blocks if (block->getBlockDecl()->capturesVariable(Variable)) Visit(block->getBlockDecl()->getBody()); } void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) { if (Capturer) return; if (OVE->getSourceExpr()) Visit(OVE->getSourceExpr()); } }; } /// Check whether the given argument is a block which captures a /// variable. static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) { assert(owner.Variable && owner.Loc.isValid()); e = e->IgnoreParenCasts(); // Look through [^{...} copy] and Block_copy(^{...}). if (ObjCMessageExpr *ME = dyn_cast(e)) { Selector Cmd = ME->getSelector(); if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") { e = ME->getInstanceReceiver(); if (!e) return 0; e = e->IgnoreParenCasts(); } } else if (CallExpr *CE = dyn_cast(e)) { if (CE->getNumArgs() == 1) { FunctionDecl *Fn = dyn_cast_or_null(CE->getCalleeDecl()); if (Fn) { const IdentifierInfo *FnI = Fn->getIdentifier(); if (FnI && FnI->isStr("_Block_copy")) { e = CE->getArg(0)->IgnoreParenCasts(); } } } } BlockExpr *block = dyn_cast(e); if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable)) return 0; FindCaptureVisitor visitor(S.Context, owner.Variable); visitor.Visit(block->getBlockDecl()->getBody()); return visitor.Capturer; } static void diagnoseRetainCycle(Sema &S, Expr *capturer, RetainCycleOwner &owner) { assert(capturer); assert(owner.Variable && owner.Loc.isValid()); S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle) << owner.Variable << capturer->getSourceRange(); S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner) << owner.Indirect << owner.Range; } /// Check for a keyword selector that starts with the word 'add' or /// 'set'. static bool isSetterLikeSelector(Selector sel) { if (sel.isUnarySelector()) return false; StringRef str = sel.getNameForSlot(0); while (!str.empty() && str.front() == '_') str = str.substr(1); if (str.startswith("set")) str = str.substr(3); else if (str.startswith("add")) { // Specially whitelist 'addOperationWithBlock:'. if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock")) return false; str = str.substr(3); } else return false; if (str.empty()) return true; return !isLowercase(str.front()); } /// Check a message send to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(ObjCMessageExpr *msg) { // Only check instance methods whose selector looks like a setter. if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector())) return; // Try to find a variable that the receiver is strongly owned by. RetainCycleOwner owner; if (msg->getReceiverKind() == ObjCMessageExpr::Instance) { if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner)) return; } else { assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance); owner.Variable = getCurMethodDecl()->getSelfDecl(); owner.Loc = msg->getSuperLoc(); owner.Range = msg->getSuperLoc(); } // Check whether the receiver is captured by any of the arguments. for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) return diagnoseRetainCycle(*this, capturer, owner); } /// Check a property assign to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(Expr *receiver, Expr *argument) { RetainCycleOwner owner; if (!findRetainCycleOwner(*this, receiver, owner)) return; if (Expr *capturer = findCapturingExpr(*this, argument, owner)) diagnoseRetainCycle(*this, capturer, owner); } void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) { RetainCycleOwner Owner; if (!considerVariable(Var, /*DeclRefExpr=*/0, Owner)) return; // Because we don't have an expression for the variable, we have to set the // location explicitly here. Owner.Loc = Var->getLocation(); Owner.Range = Var->getSourceRange(); if (Expr *Capturer = findCapturingExpr(*this, Init, Owner)) diagnoseRetainCycle(*this, Capturer, Owner); } static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc, Expr *RHS, bool isProperty) { // Check if RHS is an Objective-C object literal, which also can get // immediately zapped in a weak reference. Note that we explicitly // allow ObjCStringLiterals, since those are designed to never really die. RHS = RHS->IgnoreParenImpCasts(); // This enum needs to match with the 'select' in // warn_objc_arc_literal_assign (off-by-1). Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS); if (Kind == Sema::LK_String || Kind == Sema::LK_None) return false; S.Diag(Loc, diag::warn_arc_literal_assign) << (unsigned) Kind << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc, Qualifiers::ObjCLifetime LT, Expr *RHS, bool isProperty) { // Strip off any implicit cast added to get to the one ARC-specific. while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { S.Diag(Loc, diag::warn_arc_retained_assign) << (LT == Qualifiers::OCL_ExplicitNone) << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } RHS = cast->getSubExpr(); } if (LT == Qualifiers::OCL_Weak && checkUnsafeAssignLiteral(S, Loc, RHS, isProperty)) return true; return false; } bool Sema::checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS) { Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime(); if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone) return false; if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false)) return true; return false; } void Sema::checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS) { QualType LHSType; // PropertyRef on LHS type need be directly obtained from // its declaration as it has a PsuedoType. ObjCPropertyRefExpr *PRE = dyn_cast(LHS->IgnoreParens()); if (PRE && !PRE->isImplicitProperty()) { const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (PD) LHSType = PD->getType(); } if (LHSType.isNull()) LHSType = LHS->getType(); Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime(); if (LT == Qualifiers::OCL_Weak) { DiagnosticsEngine::Level Level = Diags.getDiagnosticLevel(diag::warn_arc_repeated_use_of_weak, Loc); if (Level != DiagnosticsEngine::Ignored) getCurFunction()->markSafeWeakUse(LHS); } if (checkUnsafeAssigns(Loc, LHSType, RHS)) return; // FIXME. Check for other life times. if (LT != Qualifiers::OCL_None) return; if (PRE) { if (PRE->isImplicitProperty()) return; const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (!PD) return; unsigned Attributes = PD->getPropertyAttributes(); if (Attributes & ObjCPropertyDecl::OBJC_PR_assign) { // when 'assign' attribute was not explicitly specified // by user, ignore it and rely on property type itself // for lifetime info. unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten(); if (!(AsWrittenAttr & ObjCPropertyDecl::OBJC_PR_assign) && LHSType->isObjCRetainableType()) return; while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { Diag(Loc, diag::warn_arc_retained_property_assign) << RHS->getSourceRange(); return; } RHS = cast->getSubExpr(); } } else if (Attributes & ObjCPropertyDecl::OBJC_PR_weak) { if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true)) return; } } } //===--- CHECK: Empty statement body (-Wempty-body) ---------------------===// namespace { bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { // Do not warn if the body is a macro that expands to nothing, e.g: // // #define CALL(x) // if (condition) // CALL(0); // if (Body->hasLeadingEmptyMacro()) return false; // Get line numbers of statement and body. bool StmtLineInvalid; unsigned StmtLine = SourceMgr.getSpellingLineNumber(StmtLoc, &StmtLineInvalid); if (StmtLineInvalid) return false; bool BodyLineInvalid; unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(), &BodyLineInvalid); if (BodyLineInvalid) return false; // Warn if null statement and body are on the same line. if (StmtLine != BodyLine) return false; return true; } } // Unnamed namespace void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc, const Stmt *Body, unsigned DiagID) { // Since this is a syntactic check, don't emit diagnostic for template // instantiations, this just adds noise. if (CurrentInstantiationScope) return; // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } void Sema::DiagnoseEmptyLoopBody(const Stmt *S, const Stmt *PossibleBody) { assert(!CurrentInstantiationScope); // Ensured by caller SourceLocation StmtLoc; const Stmt *Body; unsigned DiagID; if (const ForStmt *FS = dyn_cast(S)) { StmtLoc = FS->getRParenLoc(); Body = FS->getBody(); DiagID = diag::warn_empty_for_body; } else if (const WhileStmt *WS = dyn_cast(S)) { StmtLoc = WS->getCond()->getSourceRange().getEnd(); Body = WS->getBody(); DiagID = diag::warn_empty_while_body; } else return; // Neither `for' nor `while'. // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Skip expensive checks if diagnostic is disabled. if (Diags.getDiagnosticLevel(DiagID, NBody->getSemiLoc()) == DiagnosticsEngine::Ignored) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; // `for(...);' and `while(...);' are popular idioms, so in order to keep // noise level low, emit diagnostics only if for/while is followed by a // CompoundStmt, e.g.: // for (int i = 0; i < n; i++); // { // a(i); // } // or if for/while is followed by a statement with more indentation // than for/while itself: // for (int i = 0; i < n; i++); // a(i); bool ProbableTypo = isa(PossibleBody); if (!ProbableTypo) { bool BodyColInvalid; unsigned BodyCol = SourceMgr.getPresumedColumnNumber( PossibleBody->getLocStart(), &BodyColInvalid); if (BodyColInvalid) return; bool StmtColInvalid; unsigned StmtCol = SourceMgr.getPresumedColumnNumber( S->getLocStart(), &StmtColInvalid); if (StmtColInvalid) return; if (BodyCol > StmtCol) ProbableTypo = true; } if (ProbableTypo) { Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } } //===--- Layout compatibility ----------------------------------------------// namespace { bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); /// \brief Check if two enumeration types are layout-compatible. bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { // C++11 [dcl.enum] p8: // Two enumeration types are layout-compatible if they have the same // underlying type. return ED1->isComplete() && ED2->isComplete() && C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType()); } /// \brief Check if two fields are layout-compatible. bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { if (!isLayoutCompatible(C, Field1->getType(), Field2->getType())) return false; if (Field1->isBitField() != Field2->isBitField()) return false; if (Field1->isBitField()) { // Make sure that the bit-fields are the same length. unsigned Bits1 = Field1->getBitWidthValue(C); unsigned Bits2 = Field2->getBitWidthValue(C); if (Bits1 != Bits2) return false; } return true; } /// \brief Check if two standard-layout structs are layout-compatible. /// (C++11 [class.mem] p17) bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { // If both records are C++ classes, check that base classes match. if (const CXXRecordDecl *D1CXX = dyn_cast(RD1)) { // If one of records is a CXXRecordDecl we are in C++ mode, // thus the other one is a CXXRecordDecl, too. const CXXRecordDecl *D2CXX = cast(RD2); // Check number of base classes. if (D1CXX->getNumBases() != D2CXX->getNumBases()) return false; // Check the base classes. for (CXXRecordDecl::base_class_const_iterator Base1 = D1CXX->bases_begin(), BaseEnd1 = D1CXX->bases_end(), Base2 = D2CXX->bases_begin(); Base1 != BaseEnd1; ++Base1, ++Base2) { if (!isLayoutCompatible(C, Base1->getType(), Base2->getType())) return false; } } else if (const CXXRecordDecl *D2CXX = dyn_cast(RD2)) { // If only RD2 is a C++ class, it should have zero base classes. if (D2CXX->getNumBases() > 0) return false; } // Check the fields. RecordDecl::field_iterator Field2 = RD2->field_begin(), Field2End = RD2->field_end(), Field1 = RD1->field_begin(), Field1End = RD1->field_end(); for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) { if (!isLayoutCompatible(C, *Field1, *Field2)) return false; } if (Field1 != Field1End || Field2 != Field2End) return false; return true; } /// \brief Check if two standard-layout unions are layout-compatible. /// (C++11 [class.mem] p18) bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { llvm::SmallPtrSet UnmatchedFields; for (RecordDecl::field_iterator Field2 = RD2->field_begin(), Field2End = RD2->field_end(); Field2 != Field2End; ++Field2) { UnmatchedFields.insert(*Field2); } for (RecordDecl::field_iterator Field1 = RD1->field_begin(), Field1End = RD1->field_end(); Field1 != Field1End; ++Field1) { llvm::SmallPtrSet::iterator I = UnmatchedFields.begin(), E = UnmatchedFields.end(); for ( ; I != E; ++I) { if (isLayoutCompatible(C, *Field1, *I)) { bool Result = UnmatchedFields.erase(*I); (void) Result; assert(Result); break; } } if (I == E) return false; } return UnmatchedFields.empty(); } bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { if (RD1->isUnion() != RD2->isUnion()) return false; if (RD1->isUnion()) return isLayoutCompatibleUnion(C, RD1, RD2); else return isLayoutCompatibleStruct(C, RD1, RD2); } /// \brief Check if two types are layout-compatible in C++11 sense. bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { if (T1.isNull() || T2.isNull()) return false; // C++11 [basic.types] p11: // If two types T1 and T2 are the same type, then T1 and T2 are // layout-compatible types. if (C.hasSameType(T1, T2)) return true; T1 = T1.getCanonicalType().getUnqualifiedType(); T2 = T2.getCanonicalType().getUnqualifiedType(); const Type::TypeClass TC1 = T1->getTypeClass(); const Type::TypeClass TC2 = T2->getTypeClass(); if (TC1 != TC2) return false; if (TC1 == Type::Enum) { return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } else if (TC1 == Type::Record) { if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType()) return false; return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } return false; } } //===--- CHECK: pointer_with_type_tag attribute: datatypes should match ----// namespace { /// \brief Given a type tag expression find the type tag itself. /// /// \param TypeExpr Type tag expression, as it appears in user's code. /// /// \param VD Declaration of an identifier that appears in a type tag. /// /// \param MagicValue Type tag magic value. bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { while(true) { if (!TypeExpr) return false; TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts(); switch (TypeExpr->getStmtClass()) { case Stmt::UnaryOperatorClass: { const UnaryOperator *UO = cast(TypeExpr); if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) { TypeExpr = UO->getSubExpr(); continue; } return false; } case Stmt::DeclRefExprClass: { const DeclRefExpr *DRE = cast(TypeExpr); *VD = DRE->getDecl(); return true; } case Stmt::IntegerLiteralClass: { const IntegerLiteral *IL = cast(TypeExpr); llvm::APInt MagicValueAPInt = IL->getValue(); if (MagicValueAPInt.getActiveBits() <= 64) { *MagicValue = MagicValueAPInt.getZExtValue(); return true; } else return false; } case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { const AbstractConditionalOperator *ACO = cast(TypeExpr); bool Result; if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx)) { if (Result) TypeExpr = ACO->getTrueExpr(); else TypeExpr = ACO->getFalseExpr(); continue; } return false; } case Stmt::BinaryOperatorClass: { const BinaryOperator *BO = cast(TypeExpr); if (BO->getOpcode() == BO_Comma) { TypeExpr = BO->getRHS(); continue; } return false; } default: return false; } } } /// \brief Retrieve the C type corresponding to type tag TypeExpr. /// /// \param TypeExpr Expression that specifies a type tag. /// /// \param MagicValues Registered magic values. /// /// \param FoundWrongKind Set to true if a type tag was found, but of a wrong /// kind. /// /// \param TypeInfo Information about the corresponding C type. /// /// \returns true if the corresponding C type was found. bool GetMatchingCType( const IdentifierInfo *ArgumentKind, const Expr *TypeExpr, const ASTContext &Ctx, const llvm::DenseMap *MagicValues, bool &FoundWrongKind, Sema::TypeTagData &TypeInfo) { FoundWrongKind = false; // Variable declaration that has type_tag_for_datatype attribute. const ValueDecl *VD = NULL; uint64_t MagicValue; if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue)) return false; if (VD) { for (specific_attr_iterator I = VD->specific_attr_begin(), E = VD->specific_attr_end(); I != E; ++I) { if (I->getArgumentKind() != ArgumentKind) { FoundWrongKind = true; return false; } TypeInfo.Type = I->getMatchingCType(); TypeInfo.LayoutCompatible = I->getLayoutCompatible(); TypeInfo.MustBeNull = I->getMustBeNull(); return true; } return false; } if (!MagicValues) return false; llvm::DenseMap::const_iterator I = MagicValues->find(std::make_pair(ArgumentKind, MagicValue)); if (I == MagicValues->end()) return false; TypeInfo = I->second; return true; } } // unnamed namespace void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, uint64_t MagicValue, QualType Type, bool LayoutCompatible, bool MustBeNull) { if (!TypeTagForDatatypeMagicValues) TypeTagForDatatypeMagicValues.reset( new llvm::DenseMap); TypeTagMagicValue Magic(ArgumentKind, MagicValue); (*TypeTagForDatatypeMagicValues)[Magic] = TypeTagData(Type, LayoutCompatible, MustBeNull); } namespace { bool IsSameCharType(QualType T1, QualType T2) { const BuiltinType *BT1 = T1->getAs(); if (!BT1) return false; const BuiltinType *BT2 = T2->getAs(); if (!BT2) return false; BuiltinType::Kind T1Kind = BT1->getKind(); BuiltinType::Kind T2Kind = BT2->getKind(); return (T1Kind == BuiltinType::SChar && T2Kind == BuiltinType::Char_S) || (T1Kind == BuiltinType::UChar && T2Kind == BuiltinType::Char_U) || (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) || (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar); } } // unnamed namespace void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, const Expr * const *ExprArgs) { const IdentifierInfo *ArgumentKind = Attr->getArgumentKind(); bool IsPointerAttr = Attr->getIsPointer(); const Expr *TypeTagExpr = ExprArgs[Attr->getTypeTagIdx()]; bool FoundWrongKind; TypeTagData TypeInfo; if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context, TypeTagForDatatypeMagicValues.get(), FoundWrongKind, TypeInfo)) { if (FoundWrongKind) Diag(TypeTagExpr->getExprLoc(), diag::warn_type_tag_for_datatype_wrong_kind) << TypeTagExpr->getSourceRange(); return; } const Expr *ArgumentExpr = ExprArgs[Attr->getArgumentIdx()]; if (IsPointerAttr) { // Skip implicit cast of pointer to `void *' (as a function argument). if (const ImplicitCastExpr *ICE = dyn_cast(ArgumentExpr)) if (ICE->getType()->isVoidPointerType() && ICE->getCastKind() == CK_BitCast) ArgumentExpr = ICE->getSubExpr(); } QualType ArgumentType = ArgumentExpr->getType(); // Passing a `void*' pointer shouldn't trigger a warning. if (IsPointerAttr && ArgumentType->isVoidPointerType()) return; if (TypeInfo.MustBeNull) { // Type tag with matching void type requires a null pointer. if (!ArgumentExpr->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull)) { Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_null_pointer_required) << ArgumentKind->getName() << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } return; } QualType RequiredType = TypeInfo.Type; if (IsPointerAttr) RequiredType = Context.getPointerType(RequiredType); bool mismatch = false; if (!TypeInfo.LayoutCompatible) { mismatch = !Context.hasSameType(ArgumentType, RequiredType); // C++11 [basic.fundamental] p1: // Plain char, signed char, and unsigned char are three distinct types. // // But we treat plain `char' as equivalent to `signed char' or `unsigned // char' depending on the current char signedness mode. if (mismatch) if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(), RequiredType->getPointeeType())) || (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType))) mismatch = false; } else if (IsPointerAttr) mismatch = !isLayoutCompatible(Context, ArgumentType->getPointeeType(), RequiredType->getPointeeType()); else mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType); if (mismatch) Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch) << ArgumentType << ArgumentKind->getName() << TypeInfo.LayoutCompatible << RequiredType << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.2 log @Import clang 3.5svn r198450. @ text @a343 2 case NeonTypeFlags::Poly128: return shift ? 127 : (1 << IsQuad) - 1; a376 2 case NeonTypeFlags::Poly128: break; d621 1 a621 1 a3558 34 /// \brief Takes the expression passed to the size_t parameter of functions /// such as memcmp, strncat, etc and warns if it's a comparison. /// /// This is to catch typos like `if (memcmp(&a, &b, sizeof(a) > 0))`. static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E, IdentifierInfo *FnName, SourceLocation FnLoc, SourceLocation RParenLoc) { const BinaryOperator *Size = dyn_cast(E); if (!Size) return false; // if E is binop and op is >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isEqualityOp() && !Size->isLogicalOp()) return false; Preprocessor &PP = S.getPreprocessor(); SourceRange SizeRange = Size->getSourceRange(); S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison) << SizeRange << FnName; S.Diag(FnLoc, diag::warn_memsize_comparison_paren_note) << FnName << FixItHint::CreateInsertion( PP.getLocForEndOfToken(Size->getLHS()->getLocEnd()), ")") << FixItHint::CreateRemoval(RParenLoc); S.Diag(SizeRange.getBegin(), diag::warn_memsize_comparison_cast_note) << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(") << FixItHint::CreateInsertion( PP.getLocForEndOfToken(SizeRange.getEnd()), ")"); return true; } a3613 4 if (CheckMemorySizeofForComparison(*this, LenExpr, FnName, Call->getLocStart(), Call->getRParenLoc())) return; a3796 4 if (CheckMemorySizeofForComparison(*this, SizeArg, FnName, Call->getLocStart(), Call->getRParenLoc())) return; d3804 2 a3805 2 if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen && SizeCall->getNumArgs() == 1) a3878 4 if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getLocStart(), CE->getRParenLoc())) return; d4341 1 a4341 1 if (CL->getBuiltinCallee()) d4345 1 a4345 1 if (CR->getBuiltinCallee()) d5234 1 a5234 1 // expressions, for instances, assert(0 && "error here"), are prevented d6193 2 a6194 3 if (getLangOpts().CPlusPlus && Context.getTargetInfo() .getCXXABI() .areArgsDestroyedLeftToRightInCallee()) { d6787 1 a6787 1 // its declaration as it has a PseudoType. d7375 1 a7375 1 << ArgumentType << ArgumentKind @ 1.1.1.3 log @Import Clang 3.5svn r199312 @ text @a34 1 #include "llvm/ADT/STLExtras.h" d37 1 d4973 3 a4975 5 S.DiagRuntimeBehavior(E->getOperatorLoc(), E, S.PDiag(diag::warn_out_of_range_compare) << OS.str() << OtherT << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); d6242 1 a6242 2 // object's destructor. However, we don't perform any direct access check // on the dtor. d6246 2 a6247 12 if (!Param->isInvalidDecl()) { if (const RecordType *RT = Param->getType()->getAs()) { CXXRecordDecl *ClassDecl = cast(RT->getDecl()); if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); } } } @ 1.1.1.4 log @Import Clang 3.5svn r201163. @ text @a715 62 /// Checks if a the given expression evaluates to null. /// /// \brief Returns true if the value evaluates to null. static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { // As a special case, transparent unions initialized with zero are // considered null for the purposes of the nonnull attribute. if (const RecordType *UT = Expr->getType()->getAsUnionType()) { if (UT->getDecl()->hasAttr()) if (const CompoundLiteralExpr *CLE = dyn_cast(Expr)) if (const InitListExpr *ILE = dyn_cast(CLE->getInitializer())) Expr = ILE->getInit(0); } bool Result; return (!Expr->isValueDependent() && Expr->EvaluateAsBooleanCondition(Result, S.Context) && !Result); } static void CheckNonNullArgument(Sema &S, const Expr *ArgExpr, SourceLocation CallSiteLoc) { if (CheckNonNullExpr(S, ArgExpr)) S.Diag(CallSiteLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); } static void CheckNonNullArguments(Sema &S, const NamedDecl *FDecl, const Expr * const *ExprArgs, SourceLocation CallSiteLoc) { // Check the attributes attached to the method/function itself. for (specific_attr_iterator I = FDecl->specific_attr_begin(), E = FDecl->specific_attr_end(); I != E; ++I) { const NonNullAttr *NonNull = *I; for (NonNullAttr::args_iterator i = NonNull->args_begin(), e = NonNull->args_end(); i != e; ++i) { CheckNonNullArgument(S, ExprArgs[*i], CallSiteLoc); } } // Check the attributes on the parameters. ArrayRef parms; if (const FunctionDecl *FD = dyn_cast(FDecl)) parms = FD->parameters(); else if (const ObjCMethodDecl *MD = dyn_cast(FDecl)) parms = MD->parameters(); unsigned argIndex = 0; for (ArrayRef::iterator I = parms.begin(), E = parms.end(); I != E; ++I, ++argIndex) { const ParmVarDecl *PVD = *I; if (PVD->hasAttr()) CheckNonNullArgument(S, ExprArgs[argIndex], CallSiteLoc); } } d718 6 a723 3 void Sema::checkCall(NamedDecl *FDecl, ArrayRef Args, unsigned NumParams, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, d747 1 a747 1 for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) { d757 4 a760 1 CheckNonNullArguments(*this, FDecl, Args.data(), Loc); d780 1 a780 1 checkCall(FDecl, Args, Proto->getNumParams(), d794 1 a794 1 unsigned NumParams = Proto ? Proto->getNumParams() : 0; d804 2 a805 1 checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumParams, d860 1 a860 1 unsigned NumParams = Proto ? Proto->getNumParams() : 0; d862 5 a866 3 checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), d868 1 a868 1 d877 1 a877 1 unsigned NumParams = Proto ? Proto->getNumParams() : 0; d879 5 a883 3 checkCall(/*FDecl=*/0, llvm::makeArrayRef( TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), d2140 21 d2184 26 d2924 1 a2924 1 AT.matchesType(S.Context, Method->getReturnType())) { d4007 3 a4009 3 static void CheckReturnStackAddr(Sema &S, Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc) { d4017 1 a4017 1 (!S.getLangOpts().ObjCAutoRefCount && lhsType->isBlockPointerType())) { d4041 1 a4041 1 S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_stack_ref d4045 1 a4045 1 S.Diag(diagLoc, diag::err_ret_local_block) << diagRange; d4047 1 a4047 1 S.Diag(diagLoc, diag::warn_ret_addr_label) << diagRange; d4049 2 a4050 2 S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_local_temp_ref : diag::warn_ret_local_temp_addr) d4063 2 a4064 2 S.Diag(VD->getLocation(), diag::note_ref_var_local_bind) << VD->getDeclName() << range; a4113 4 // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return 0; d4163 4 a4166 5 // FIXME: That isn't a ConditionalOperator, so doesn't get here. if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalAddr(LHSExpr, refVars, ParentDecl)) d4172 1 a4172 1 return 0; d4176 1 a4176 1 a4268 4 // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return 0; d4316 3 a4318 10 if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalVal(LHSExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return 0; a4358 38 void Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc, bool isObjCMethod, const AttrVec *Attrs, const FunctionDecl *FD) { CheckReturnStackAddr(*this, RetValExp, lhsType, ReturnLoc); // Check if the return value is null but should not be. if (Attrs) for (specific_attr_iterator I = specific_attr_iterator(Attrs->begin()), E = specific_attr_iterator(Attrs->end()); I != E; ++I) { if (CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_null_ret) << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); break; } // C++11 [basic.stc.dynamic.allocation]p4: // If an allocation function declared with a non-throwing // exception-specification fails to allocate storage, it shall return // a null pointer. Any other allocation function that fails to allocate // storage shall indicate failure only by throwing an exception [...] if (FD) { OverloadedOperatorKind Op = FD->getOverloadedOperator(); if (Op == OO_New || Op == OO_Array_New) { const FunctionProtoType *Proto = FD->getType()->castAs(); if (!Proto->isNothrow(Context, /*ResultIfDependent*/true) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_operator_new_returns_null) << FD << getLangOpts().CPlusPlus11; } } } d5286 2 a5287 2 // and expressions, for instance, assert(0 && "error here"), are // prevented by a check in AnalyzeImplicitConversions(). a5289 7 if (isa(E) || isa(E) || isa(E) || isa(E)) { // This covers the literal expressions that evaluate to Objective-C // objects. return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_objective_c_literal_to_bool); } d5638 1 a5638 1 bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd; d5644 1 a5644 1 if (IsLogicalAndOperator && d5646 1 a5646 2 // Ignore checking string literals that are in logical and operators. // This is a common pattern for asserts. @ 1.1.1.5 log @Import Clang 3.5svn r202566. @ text @a309 1 case llvm::Triple::aarch64_be: a319 5 case llvm::Triple::x86: case llvm::Triple::x86_64: if (CheckX86BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; d329 1 a329 1 static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) { d331 1 a331 1 int IsQuad = ForceQuad ? true : Type.isQuad(); d372 1 a372 5 if (IsAArch64) return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy; else return Flags.isUnsigned() ? Context.UnsignedLongLongTy : Context.LongLongTy; d378 1 a378 1 return Context.UnsignedLongTy; d391 3 a393 1 bool Sema::CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { d395 1 d401 1 a401 1 #define GET_NEON_OVERLOAD_CHECK d403 1 a403 1 #undef GET_NEON_OVERLOAD_CHECK d408 1 a408 1 unsigned ImmArg = TheCall->getNumArgs()-1; d416 1 a416 1 << TheCall->getArg(ImmArg)->getSourceRange(); d426 1 a426 4 bool IsAArch64 = Context.getTargetInfo().getTriple().getArch() == llvm::Triple::aarch64; QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, IsAArch64); d445 1 a445 1 #define GET_NEON_IMMEDIATE_CHECK d447 1 a447 1 #undef GET_NEON_IMMEDIATE_CHECK a468 8 bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; return false; } d583 42 a624 2 if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; d637 3 a692 9 bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { switch (BuiltinID) { case X86::BI_mm_prefetch: return SemaBuiltinMMPrefetch(TheCall); break; } return false; } a869 2 CheckAbsoluteValueFunction(TheCall, FDecl, FnInfo); a1958 20 /// SemaBuiltinMMPrefetch - Handle _mm_prefetch. // This is declared to take (const char*, int) bool Sema::SemaBuiltinMMPrefetch(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (Result.getLimitedValue() > 3) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << Arg->getSourceRange(); return false; } d2762 1 a2762 1 const Expr *E); d2896 1 a2896 1 if (!RD || !RD->getDefinition()) a2900 1 R.suppressDiagnostics(); a2912 15 /// Check if we could call '.c_str()' on an object. /// /// FIXME: This returns the wrong results in some cases (if cv-qualifiers don't /// allow the call, or if it would be ambiguous). bool Sema::hasCStrMethod(const Expr *E) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", *this, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) if ((*MI)->getMinRequiredArguments() == 0) return true; return false; } d2917 2 a2918 1 const analyze_printf::ArgType &AT, const Expr *E) { d2927 1 a2927 1 if (Method->getMinRequiredArguments() == 0 && d3314 1 a3314 1 checkForCStrMembers(AT, E); d3531 1 a3531 5 // Account for cases where the string literal is truncated in a declaration. const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); assert(T && "String literal not of constant array type!"); size_t TypeSize = T->getSize().getZExtValue(); size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); d3533 1 a3533 13 // Emit a warning if the string literal is truncated and does not contain an // embedded null character. if (TypeSize <= StrRef.size() && StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_printf_format_string_not_null_terminated), FExpr->getLocStart(), /*IsStringLocation=*/true, OrigFormatExpr->getSourceRange()); return; } a3564 322 //===--- CHECK: Warn on use of wrong absolute value function. -------------===// // Returns the related absolute value function that is larger, of 0 if one // does not exist. static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) { switch (AbsFunction) { default: return 0; case Builtin::BI__builtin_abs: return Builtin::BI__builtin_labs; case Builtin::BI__builtin_labs: return Builtin::BI__builtin_llabs; case Builtin::BI__builtin_llabs: return 0; case Builtin::BI__builtin_fabsf: return Builtin::BI__builtin_fabs; case Builtin::BI__builtin_fabs: return Builtin::BI__builtin_fabsl; case Builtin::BI__builtin_fabsl: return 0; case Builtin::BI__builtin_cabsf: return Builtin::BI__builtin_cabs; case Builtin::BI__builtin_cabs: return Builtin::BI__builtin_cabsl; case Builtin::BI__builtin_cabsl: return 0; case Builtin::BIabs: return Builtin::BIlabs; case Builtin::BIlabs: return Builtin::BIllabs; case Builtin::BIllabs: return 0; case Builtin::BIfabsf: return Builtin::BIfabs; case Builtin::BIfabs: return Builtin::BIfabsl; case Builtin::BIfabsl: return 0; case Builtin::BIcabsf: return Builtin::BIcabs; case Builtin::BIcabs: return Builtin::BIcabsl; case Builtin::BIcabsl: return 0; } } // Returns the argument type of the absolute value function. static QualType getAbsoluteValueArgumentType(ASTContext &Context, unsigned AbsType) { if (AbsType == 0) return QualType(); ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; QualType BuiltinType = Context.GetBuiltinType(AbsType, Error); if (Error != ASTContext::GE_None) return QualType(); const FunctionProtoType *FT = BuiltinType->getAs(); if (!FT) return QualType(); if (FT->getNumParams() != 1) return QualType(); return FT->getParamType(0); } // Returns the best absolute value function, or zero, based on type and // current absolute value function. static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType, unsigned AbsFunctionKind) { unsigned BestKind = 0; uint64_t ArgSize = Context.getTypeSize(ArgType); for (unsigned Kind = AbsFunctionKind; Kind != 0; Kind = getLargerAbsoluteValueFunction(Kind)) { QualType ParamType = getAbsoluteValueArgumentType(Context, Kind); if (Context.getTypeSize(ParamType) >= ArgSize) { if (BestKind == 0) BestKind = Kind; else if (Context.hasSameType(ParamType, ArgType)) { BestKind = Kind; break; } } } return BestKind; } enum AbsoluteValueKind { AVK_Integer, AVK_Floating, AVK_Complex }; static AbsoluteValueKind getAbsoluteValueKind(QualType T) { if (T->isIntegralOrEnumerationType()) return AVK_Integer; if (T->isRealFloatingType()) return AVK_Floating; if (T->isAnyComplexType()) return AVK_Complex; llvm_unreachable("Type not integer, floating, or complex"); } // Changes the absolute value function to a different type. Preserves whether // the function is a builtin. static unsigned changeAbsFunction(unsigned AbsKind, AbsoluteValueKind ValueKind) { switch (ValueKind) { case AVK_Integer: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_abs; case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIabs; } case AVK_Floating: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_fabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIfabsf; } case AVK_Complex: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: return Builtin::BI__builtin_cabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: return Builtin::BIcabsf; } } llvm_unreachable("Unable to convert function"); } unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { const IdentifierInfo *FnInfo = FDecl->getIdentifier(); if (!FnInfo) return 0; switch (FDecl->getBuiltinID()) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabsl: case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabs: case Builtin::BIfabsf: case Builtin::BIfabsl: case Builtin::BIcabs: case Builtin::BIcabsf: case Builtin::BIcabsl: return FDecl->getBuiltinID(); } llvm_unreachable("Unknown Builtin type"); } // If the replacement is valid, emit a note with replacement function. // Additionally, suggest including the proper header if not already included. static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range, unsigned AbsKind) { std::string AbsName = S.Context.BuiltinInfo.GetName(AbsKind); // Look up absolute value function in TU scope. DeclarationName DN(&S.Context.Idents.get(AbsName)); LookupResult R(S, DN, Loc, Sema::LookupAnyName); S.LookupName(R, S.TUScope); // Skip notes if multiple results found in lookup. if (!R.empty() && !R.isSingleResult()) return; FunctionDecl *FD = 0; bool FoundFunction = R.isSingleResult(); // When one result is found, see if it is the correct function. if (R.isSingleResult()) { FD = dyn_cast(R.getFoundDecl()); if (!FD || FD->getBuiltinID() != AbsKind) return; } // Look for local name conflict, prepend "::" as necessary. R.clear(); S.LookupName(R, S.getCurScope()); if (!FoundFunction) { if (!R.empty()) { AbsName = "::" + AbsName; } } else { // FoundFunction if (R.isSingleResult()) { if (R.getFoundDecl() != FD) { AbsName = "::" + AbsName; } } else if (!R.empty()) { AbsName = "::" + AbsName; } } S.Diag(Loc, diag::note_replace_abs_function) << AbsName << FixItHint::CreateReplacement(Range, AbsName); if (!FoundFunction) { S.Diag(Loc, diag::note_please_include_header) << S.Context.BuiltinInfo.getHeaderName(AbsKind) << S.Context.BuiltinInfo.GetName(AbsKind); } } // Warn when using the wrong abs() function. void Sema::CheckAbsoluteValueFunction(const CallExpr *Call, const FunctionDecl *FDecl, IdentifierInfo *FnInfo) { if (Call->getNumArgs() != 1) return; unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl); if (AbsKind == 0) return; QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType(); QualType ParamType = Call->getArg(0)->getType(); // Unsigned types can not be negative. Suggest to drop the absolute value // function. if (ArgType->isUnsignedIntegerType()) { Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType; Diag(Call->getExprLoc(), diag::note_remove_abs) << FDecl << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()); return; } AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType); AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType); // The argument and parameter are the same kind. Check if they are the right // size. if (ArgValueKind == ParamValueKind) { if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType)) return; unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind); Diag(Call->getExprLoc(), diag::warn_abs_too_small) << FDecl << ArgType << ParamType; if (NewAbsKind == 0) return; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind); return; } // ArgValueKind != ParamValueKind // The wrong type of absolute value function was used. Attempt to find the // proper one. unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind); NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind); if (NewAbsKind == 0) return; Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type) << FDecl << ParamValueKind << ArgValueKind; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind); return; } d4388 10 a4397 4 if (Attrs && hasSpecificAttr(*Attrs) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_null_ret) << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); d5355 29 a5383 4 if (Source->isPointerType() || Source->canDecayToPointerType()) { // Warn on pointer to bool conversion that is always true. S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, /*IsEqual*/ false, SourceRange(CC)); a5719 119 enum { AddressOf, FunctionPointer, ArrayPointer }; /// \brief Diagnose pointers that are always non-null. /// \param E the expression containing the pointer /// \param NullKind NPCK_NotNull if E is a cast to bool, otherwise, E is /// compared to a null pointer /// \param IsEqual True when the comparison is equal to a null pointer /// \param Range Extra SourceRange to highlight in the diagnostic void Sema::DiagnoseAlwaysNonNullPointer(Expr *E, Expr::NullPointerConstantKind NullKind, bool IsEqual, SourceRange Range) { // Don't warn inside macros. if (E->getExprLoc().isMacroID()) return; E = E->IgnoreImpCasts(); const bool IsCompare = NullKind != Expr::NPCK_NotNull; bool IsAddressOf = false; if (UnaryOperator *UO = dyn_cast(E)) { if (UO->getOpcode() != UO_AddrOf) return; IsAddressOf = true; E = UO->getSubExpr(); } // Expect to find a single Decl. Skip anything more complicated. ValueDecl *D = 0; if (DeclRefExpr *R = dyn_cast(E)) { D = R->getDecl(); } else if (MemberExpr *M = dyn_cast(E)) { D = M->getMemberDecl(); } // Weak Decls can be null. if (!D || D->isWeak()) return; QualType T = D->getType(); const bool IsArray = T->isArrayType(); const bool IsFunction = T->isFunctionType(); if (IsAddressOf) { // Address of function is used to silence the function warning. if (IsFunction) return; // Address of reference can be null. if (T->isReferenceType()) return; } // Found nothing. if (!IsAddressOf && !IsFunction && !IsArray) return; // Pretty print the expression for the diagnostic. std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, 0, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare : diag::warn_impcast_pointer_to_bool; unsigned DiagType; if (IsAddressOf) DiagType = AddressOf; else if (IsFunction) DiagType = FunctionPointer; else if (IsArray) DiagType = ArrayPointer; else llvm_unreachable("Could not determine diagnostic."); Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange() << Range << IsEqual; if (!IsFunction) return; // Suggest '&' to silence the function warning. Diag(E->getExprLoc(), diag::note_function_warning_silence) << FixItHint::CreateInsertion(E->getLocStart(), "&"); // Check to see if '()' fixit should be emitted. QualType ReturnType; UnresolvedSet<4> NonTemplateOverloads; tryExprAsCall(*E, ReturnType, NonTemplateOverloads); if (ReturnType.isNull()) return; if (IsCompare) { // There are two cases here. If there is null constant, the only suggest // for a pointer return type. If the null is 0, then suggest if the return // type is a pointer or an integer type. if (!ReturnType->isPointerType()) { if (NullKind == Expr::NPCK_ZeroExpression || NullKind == Expr::NPCK_ZeroLiteral) { if (!ReturnType->isIntegerType()) return; } else { return; } } } else { // !IsCompare // For function to bool, only suggest if the function pointer has bool // return type. if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) return; } Diag(E->getExprLoc(), diag::note_function_to_function_call) << FixItHint::CreateInsertion( getPreprocessor().getLocForEndOfToken(E->getLocEnd()), "()"); } d7369 4 a7372 1 if (TypeTagForDatatypeAttr *I = VD->getAttr()) { a7509 1 @ 1.1.1.5.2.1 log @Rebase. @ text @d30 1 a30 1 #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. d46 2 a47 2 return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts, Context.getTargetInfo()); d104 1 a104 1 ExprResult Arg(TheCall->getArg(0)); d109 1 a109 1 TheCall->setArg(0, Arg.get()); d116 1 a116 1 ExprResult TheCallResult(TheCall); a144 1 case Builtin::BI__va_start: d178 1 a178 1 if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3)) a304 1 case llvm::Triple::armeb: a305 1 case llvm::Triple::thumbeb: a310 2 case llvm::Triple::arm64: case llvm::Triple::arm64_be: d369 1 a369 1 bool IsPolyUnsigned, bool IsInt64Long) { d378 1 a378 1 if (IsInt64Long) d384 1 a384 1 return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy; d386 1 a386 1 return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy; d434 3 a436 7 llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch(); bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::arm64; bool IsInt64Long = Context.getTargetInfo().getInt64Type() == TargetInfo::SignedLong; QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long); d459 1 d461 16 a476 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); d479 9 a487 2 bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, unsigned MaxWidth) { d489 1 a489 3 BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_strex) && d491 1 a491 2 bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldrex; d507 1 a507 1 PointerArg = PointerArgRes.get(); d539 1 a539 1 PointerArg = PointerArgRes.get(); d552 1 a552 2 if (Context.getTypeSize(ValType) > MaxWidth) { assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"); d598 1 a598 1 return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64); d604 1 a604 1 // For NEON intrinsics which take an immediate value as part of the d615 1 a615 1 } d617 4 a620 3 // FIXME: VFP Intrinsics should error if VFP not present. return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); } d622 3 a624 3 bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; d626 5 a630 7 if (BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_strex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128); } if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; d632 1 d647 17 a663 1 } d665 1 a665 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u); d671 2 a672 2 // This is declared to take (const char*, int) return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); d734 10 a743 3 for (const auto *NonNull : FDecl->specific_attrs()) { for (const auto &Val : NonNull->args()) CheckNonNullArgument(S, ExprArgs[Val], CallSiteLoc); d775 4 a778 1 for (const auto *I : FDecl->specific_attrs()) { d782 1 a782 1 CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range, d803 6 a808 2 for (const auto *I : FDecl->specific_attrs()) CheckArgumentWithTypeTag(I, Args.data()); d914 1 a914 1 VariadicCallType CallType = getVariadicCallType(/*FDecl=*/nullptr, Proto, d918 2 a919 3 checkCall(/*FDecl=*/nullptr, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), a925 27 static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) { if (Ordering < AtomicExpr::AO_ABI_memory_order_relaxed || Ordering > AtomicExpr::AO_ABI_memory_order_seq_cst) return false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: llvm_unreachable("There is no ordering argument for an init"); case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: case AtomicExpr::AO__atomic_load: return Ordering != AtomicExpr::AO_ABI_memory_order_release && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: return Ordering != AtomicExpr::AO_ABI_memory_order_consume && Ordering != AtomicExpr::AO_ABI_memory_order_acquire && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; default: return true; } } d1214 1 a1214 10 if (SubExprs.size() >= 2 && Form != Init) { llvm::APSInt Result(32); if (SubExprs[1]->isIntegerConstantExpr(Result, Context) && !isValidOrderingForOp(Result.getSExtValue(), Op)) Diag(SubExprs[1]->getLocStart(), diag::warn_atomic_op_has_invalid_memory_order) << SubExprs[1]->getSourceRange(); } d1225 1 a1225 1 return AE; d1249 1 a1249 1 E->setArg(ArgIndex, Arg.get()); d1284 1 a1284 1 FirstArg = FirstArgResult.get(); d1537 1 a1537 1 if (!NewBuiltinDecl) d1562 1 a1562 1 TheCall->setArg(i+1, Arg.get()); d1583 1 a1583 1 TheCall->setCallee(PromotedCall.get()); d1779 1 a1779 1 Cast->setSubExpr(nullptr); d1864 1 a1864 1 TheCall->setArg(i, nullptr); d1867 3 a1869 3 return new (Context) ShuffleVectorExpr(Context, exprs, resType, TheCall->getCallee()->getLocStart(), TheCall->getRParenLoc()); d1898 3 a1900 2 return new (Context) ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc); d1917 9 a1925 2 for (unsigned i = 1; i != NumArgs; ++i) if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3)) d1928 34 d1982 5 a1986 4 /// SemaBuiltinConstantArgRange - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression in the range [Low, High]. bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, int Low, int High) { d1990 2 a1991 2 Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) d1995 1 a1995 1 if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) d1998 2 a1999 1 if (Result.getSExtValue() < Low || Result.getSExtValue() > High) d2001 2 a2002 1 << Low << High << Arg->getSourceRange(); d2145 4 a2148 1 for (const auto *PVFormat : ND->specific_attrs()) { d2199 1 a2199 1 const StringLiteral *StrE = nullptr; d2348 1 a2348 1 unsigned specifierLen) override; d2351 3 a2353 4 const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID); d2356 2 a2357 2 const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen); d2360 2 a2361 2 const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen); d2363 1 a2363 1 void HandlePosition(const char *startPos, unsigned posLen) override; d2365 3 a2367 3 void HandleInvalidPosition(const char *startSpecifier, unsigned specifierLen, analyze_format_string::PositionContext p) override; d2369 1 a2369 1 void HandleZeroPosition(const char *startPos, unsigned posLen) override; d2371 1 a2371 1 void HandleNullChar(const char *nullCharacter) override; d2407 3 d2740 1 a2740 1 d2744 2 a2745 2 unsigned specifierLen) override; d2748 1 a2748 1 unsigned specifierLen) override; d2905 1 a2905 1 LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(), d2951 2 a2952 1 SourceLocation EndLoc = S.getLocForEndOfToken(E->getLocEnd()); d3281 1 a3281 1 SourceLocation After = S.getLocForEndOfToken(E->getLocEnd()); d3387 1 a3387 1 unsigned specifierLen) override; d3392 1 a3392 1 unsigned specifierLen) override; d3394 1 a3394 1 void HandleIncompleteScanList(const char *start, const char *end) override; d3499 2 a3500 3 bool success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), S.getLangOpts(), S.Context); d3780 1 a3780 1 static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { d3814 2 a3815 13 unsigned AbsKind, QualType ArgType) { bool EmitHeaderHint = true; const char *HeaderName = nullptr; const char *FunctionName = nullptr; if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) { FunctionName = "std::abs"; if (ArgType->isIntegralOrEnumerationType()) { HeaderName = "cstdlib"; } else if (ArgType->isRealFloatingType()) { HeaderName = "cmath"; } else { llvm_unreachable("Invalid Type"); } d3817 17 a3833 34 // Lookup all std::abs if (NamespaceDecl *Std = S.getStdNamespace()) { LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupQualifiedName(R, Std); for (const auto *I : R) { const FunctionDecl *FDecl = nullptr; if (const UsingShadowDecl *UsingD = dyn_cast(I)) { FDecl = dyn_cast(UsingD->getTargetDecl()); } else { FDecl = dyn_cast(I); } if (!FDecl) continue; // Found std::abs(), check that they are the right ones. if (FDecl->getNumParams() != 1) continue; // Check that the parameter type can handle the argument. QualType ParamType = FDecl->getParamDecl(0)->getType(); if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) && S.Context.getTypeSize(ArgType) <= S.Context.getTypeSize(ParamType)) { // Found a function, don't need the header hint. EmitHeaderHint = false; break; } } } } else { FunctionName = S.Context.BuiltinInfo.GetName(AbsKind); HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind); d3835 12 a3846 15 if (HeaderName) { DeclarationName DN(&S.Context.Idents.get(FunctionName)); LookupResult R(S, DN, Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupName(R, S.getCurScope()); if (R.isSingleResult()) { FunctionDecl *FD = dyn_cast(R.getFoundDecl()); if (FD && FD->getBuiltinID() == AbsKind) { EmitHeaderHint = false; } else { return; } } else if (!R.empty()) { return; d3848 2 d3854 1 a3854 1 << FunctionName << FixItHint::CreateReplacement(Range, FunctionName); d3856 4 a3859 20 if (!HeaderName) return; if (!EmitHeaderHint) return; S.Diag(Loc, diag::note_please_include_header) << HeaderName << FunctionName; } static bool IsFunctionStdAbs(const FunctionDecl *FDecl) { if (!FDecl) return false; if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr("abs")) return false; const NamespaceDecl *ND = dyn_cast(FDecl->getDeclContext()); while (ND && ND->isInlineNamespace()) { ND = dyn_cast(ND->getDeclContext()); a3860 8 if (!ND || !ND->getIdentifier() || !ND->getIdentifier()->isStr("std")) return false; if (!isa(ND->getDeclContext())) return false; return true; d3871 1 a3871 2 bool IsStdAbs = IsFunctionStdAbs(FDecl); if (AbsKind == 0 && !IsStdAbs) a3879 2 const char *FunctionName = IsStdAbs ? "std::abs" : Context.BuiltinInfo.GetName(AbsKind); d3882 1 a3882 1 << FunctionName a3886 5 // std::abs has overloads which prevent most of the absolute value problems // from occurring. if (IsStdAbs) return; d3904 1 a3904 1 Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); d3920 1 a3920 1 Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); d3942 1 d3946 5 a3950 3 S.Diag(FnLoc, diag::note_memsize_comparison_paren) << FnName << FixItHint::CreateInsertion( S.getLocForEndOfToken(Size->getLHS()->getLocEnd()), ")") d3952 1 a3952 1 S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence) d3954 2 a3955 2 << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()), ")"); d3979 1 a3979 1 return nullptr; d4069 1 a4069 1 SourceManager &SM = getSourceManager(); d4201 1 a4201 1 const Expr *CompareWithSrc = nullptr; d4250 1 a4250 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4270 1 a4270 1 return nullptr; d4273 1 a4273 1 return nullptr; d4322 1 a4322 1 SourceManager &SM = getSourceManager(); d4351 1 a4351 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4354 1 a4354 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4374 1 a4374 1 Expr *stackE = nullptr; d4381 1 a4381 1 stackE = EvalAddr(RetValExp, refVars, /*ParentDecl=*/nullptr); d4383 1 a4383 1 stackE = EvalVal(RetValExp, refVars, /*ParentDecl=*/nullptr); d4386 1 a4386 1 if (!stackE) d4460 1 a4460 1 return nullptr; d4479 1 a4479 1 return nullptr; d4491 1 a4491 1 return nullptr; d4502 1 a4502 1 return nullptr; d4512 1 a4512 1 return nullptr; d4540 1 a4540 1 return nullptr; d4548 1 a4548 1 return nullptr; d4585 1 a4585 1 return nullptr; d4599 1 a4599 1 return nullptr; d4625 1 a4625 1 return nullptr; d4639 1 a4639 1 return nullptr; d4660 1 a4660 1 return nullptr; d4672 1 a4672 1 return nullptr; d4697 1 a4697 1 return nullptr; d4708 1 a4708 1 return nullptr; d4713 1 a4713 1 return nullptr; d4733 1 a4733 1 return nullptr; a5284 8 // TODO: Investigate using GetExprRange() to get tighter bounds // on the bit ranges. QualType OtherT = Other->getType(); IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT); unsigned OtherWidth = OtherRange.Width; bool OtherIsBooleanType = Other->isKnownToHaveBooleanValue(); d5286 1 a5286 1 if ((Value == 0) && (!OtherIsBooleanType)) d5290 7 a5296 1 bool IsTrue = true; d5298 2 a5299 10 // Used for diagnostic printout. enum { LiteralConstant = 0, CXXBoolLiteralTrue, CXXBoolLiteralFalse } LiteralOrBoolConstant = LiteralConstant; if (!OtherIsBooleanType) { QualType ConstantT = Constant->getType(); QualType CommonT = E->getLHS()->getType(); d5301 1 a5301 4 if (S.Context.hasSameUnqualifiedType(OtherT, ConstantT)) return; assert((OtherT->isIntegerType() && ConstantT->isIntegerType()) && "comparison with non-integer type"); d5303 15 a5317 26 bool ConstantSigned = ConstantT->isSignedIntegerType(); bool CommonSigned = CommonT->isSignedIntegerType(); bool EqualityOnly = false; if (CommonSigned) { // The common type is signed, therefore no signed to unsigned conversion. if (!OtherRange.NonNegative) { // Check that the constant is representable in type OtherT. if (ConstantSigned) { if (OtherWidth >= Value.getMinSignedBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits() + 1) return; } } else { // !OtherSigned // Check that the constant is representable in type OtherT. // Negative values are out of range. if (ConstantSigned) { if (Value.isNonNegative() && OtherWidth >= Value.getActiveBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits()) return; } d5319 7 a5325 2 } else { // !CommonSigned if (OtherRange.NonNegative) { a5327 16 } else if (!OtherRange.NonNegative && !ConstantSigned) { // Check to see if the constant is representable in OtherT. if (OtherWidth > Value.getActiveBits()) return; // Check to see if the constant is equivalent to a negative value // cast to CommonT. if (S.Context.getIntWidth(ConstantT) == S.Context.getIntWidth(CommonT) && Value.isNegative() && Value.getMinSignedBits() <= OtherWidth) return; // The constant value rests between values that OtherT can represent // after conversion. Relational comparison still works, but equality // comparisons will be tautological. EqualityOnly = true; } else { // OtherSigned && ConstantSigned assert(0 && "Two signed types converted to unsigned types."); d5330 21 d5352 1 a5352 1 bool PositiveConstant = !ConstantSigned || Value.isNonNegative(); d5354 10 a5363 15 if (op == BO_EQ || op == BO_NE) { IsTrue = op == BO_NE; } else if (EqualityOnly) { return; } else if (RhsConstant) { if (op == BO_GT || op == BO_GE) IsTrue = !PositiveConstant; else // op == BO_LT || op == BO_LE IsTrue = PositiveConstant; } else { if (op == BO_LT || op == BO_LE) IsTrue = !PositiveConstant; else // op == BO_GT || op == BO_GE IsTrue = PositiveConstant; } d5365 4 a5368 77 // Other isKnownToHaveBooleanValue enum CompareBoolWithConstantResult { AFals, ATrue, Unkwn }; enum ConstantValue { LT_Zero, Zero, One, GT_One, SizeOfConstVal }; enum ConstantSide { Lhs, Rhs, SizeOfConstSides }; static const struct LinkedConditions { CompareBoolWithConstantResult BO_LT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_LE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_EQ_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_NE_OP[SizeOfConstSides][SizeOfConstVal]; } TruthTable = { // Constant on LHS. | Constant on RHS. | // LT_Zero| Zero | One |GT_One| LT_Zero| Zero | One |GT_One| { { ATrue, Unkwn, AFals, AFals }, { AFals, AFals, Unkwn, ATrue } }, { { AFals, AFals, Unkwn, ATrue }, { ATrue, Unkwn, AFals, AFals } }, { { ATrue, ATrue, Unkwn, AFals }, { AFals, Unkwn, ATrue, ATrue } }, { { AFals, Unkwn, ATrue, ATrue }, { ATrue, ATrue, Unkwn, AFals } }, { { AFals, Unkwn, Unkwn, AFals }, { AFals, Unkwn, Unkwn, AFals } }, { { ATrue, Unkwn, Unkwn, ATrue }, { ATrue, Unkwn, Unkwn, ATrue } } }; bool ConstantIsBoolLiteral = isa(Constant); enum ConstantValue ConstVal = Zero; if (Value.isUnsigned() || Value.isNonNegative()) { if (Value == 0) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralFalse : LiteralConstant; ConstVal = Zero; } else if (Value == 1) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralTrue : LiteralConstant; ConstVal = One; } else { LiteralOrBoolConstant = LiteralConstant; ConstVal = GT_One; } } else { ConstVal = LT_Zero; } CompareBoolWithConstantResult CmpRes; switch (op) { case BO_LT: CmpRes = TruthTable.BO_LT_OP[RhsConstant][ConstVal]; break; case BO_GT: CmpRes = TruthTable.BO_GT_OP[RhsConstant][ConstVal]; break; case BO_LE: CmpRes = TruthTable.BO_LE_OP[RhsConstant][ConstVal]; break; case BO_GE: CmpRes = TruthTable.BO_GE_OP[RhsConstant][ConstVal]; break; case BO_EQ: CmpRes = TruthTable.BO_EQ_OP[RhsConstant][ConstVal]; break; case BO_NE: CmpRes = TruthTable.BO_NE_OP[RhsConstant][ConstVal]; break; default: CmpRes = Unkwn; break; } if (CmpRes == AFals) { IsTrue = false; } else if (CmpRes == ATrue) { IsTrue = true; } else { return; } d5373 1 a5373 1 const EnumConstantDecl *ED = nullptr; d5384 5 a5388 6 S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(diag::warn_out_of_range_compare) << OS.str() << LiteralOrBoolConstant << OtherT << (OtherIsBooleanType && !OtherT->isBooleanType()) << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); d5677 1 a5677 1 SourceLocation CC, bool *ICContext = nullptr) { a5730 2 if (auto VecTy = dyn_cast(Target)) Target = VecTy->getElementType().getTypePtr(); d5974 1 a5974 1 d6081 1 a6081 1 ValueDecl *D = nullptr; d6112 1 a6112 1 E->printPretty(S, nullptr, getPrintingPolicy()); d6162 2 a6163 1 << FixItHint::CreateInsertion(getLocForEndOfToken(E->getLocEnd()), "()"); d6288 1 a6288 1 Usage() : Use(nullptr), Seq() {} d6388 1 a6388 1 return nullptr; d6448 2 a6449 2 : Base(S.Context), SemaRef(S), Region(Tree.root()), ModAsSideEffect(nullptr), WorkList(WorkList), EvalTracker(nullptr) { d6734 1 a6734 1 Param->getIdentifier() == nullptr && d6901 1 a6901 1 const NamedDecl *ND = nullptr; d7044 1 a7044 1 RetainCycleOwner() : Variable(nullptr), Indirect(false) {} d7155 1 a7155 1 Variable(variable), Capturer(nullptr) {} d7199 1 a7199 1 return nullptr; d7216 1 a7216 1 return nullptr; d7292 1 a7292 1 if (!considerVariable(Var, /*DeclRefExpr=*/nullptr, Owner)) d7637 5 a7641 2 for (auto *Field2 : RD2->fields()) UnmatchedFields.insert(Field2); d7643 3 a7645 1 for (auto *Field1 : RD1->fields()) { d7651 1 a7651 1 if (isLayoutCompatible(C, Field1, *I)) { d7808 1 a7808 1 const ValueDecl *VD = nullptr; @ 1.1.1.6 log @Import Clang 3.5svn r209886. @ text @d30 1 a30 1 #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. d46 2 a47 2 return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts, Context.getTargetInfo()); d104 1 a104 1 ExprResult Arg(TheCall->getArg(0)); d109 1 a109 1 TheCall->setArg(0, Arg.get()); d116 1 a116 1 ExprResult TheCallResult(TheCall); a144 1 case Builtin::BI__va_start: d178 1 a178 1 if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3)) a304 1 case llvm::Triple::armeb: a305 1 case llvm::Triple::thumbeb: a310 2 case llvm::Triple::arm64: case llvm::Triple::arm64_be: d369 1 a369 1 bool IsPolyUnsigned, bool IsInt64Long) { d378 1 a378 1 if (IsInt64Long) d384 1 a384 1 return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy; d386 1 a386 1 return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy; d434 3 a436 7 llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch(); bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::arm64; bool IsInt64Long = Context.getTargetInfo().getInt64Type() == TargetInfo::SignedLong; QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long); d459 1 d461 16 a476 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); d479 9 a487 2 bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, unsigned MaxWidth) { d489 1 a489 3 BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_strex) && d491 1 a491 2 bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldrex; d507 1 a507 1 PointerArg = PointerArgRes.get(); d539 1 a539 1 PointerArg = PointerArgRes.get(); d552 1 a552 2 if (Context.getTypeSize(ValType) > MaxWidth) { assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"); d598 1 a598 1 return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64); d604 1 a604 1 // For NEON intrinsics which take an immediate value as part of the d615 1 a615 1 } d617 4 a620 3 // FIXME: VFP Intrinsics should error if VFP not present. return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); } d622 3 a624 3 bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; d626 5 a630 7 if (BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_strex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128); } if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; d632 1 d647 17 a663 1 } d665 1 a665 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u); d671 2 a672 2 // This is declared to take (const char*, int) return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); d734 10 a743 3 for (const auto *NonNull : FDecl->specific_attrs()) { for (const auto &Val : NonNull->args()) CheckNonNullArgument(S, ExprArgs[Val], CallSiteLoc); d775 4 a778 1 for (const auto *I : FDecl->specific_attrs()) { d782 1 a782 1 CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range, d803 6 a808 2 for (const auto *I : FDecl->specific_attrs()) CheckArgumentWithTypeTag(I, Args.data()); d914 1 a914 1 VariadicCallType CallType = getVariadicCallType(/*FDecl=*/nullptr, Proto, d918 2 a919 3 checkCall(/*FDecl=*/nullptr, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), a925 27 static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) { if (Ordering < AtomicExpr::AO_ABI_memory_order_relaxed || Ordering > AtomicExpr::AO_ABI_memory_order_seq_cst) return false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: llvm_unreachable("There is no ordering argument for an init"); case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: case AtomicExpr::AO__atomic_load: return Ordering != AtomicExpr::AO_ABI_memory_order_release && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: return Ordering != AtomicExpr::AO_ABI_memory_order_consume && Ordering != AtomicExpr::AO_ABI_memory_order_acquire && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; default: return true; } } d1214 1 a1214 10 if (SubExprs.size() >= 2 && Form != Init) { llvm::APSInt Result(32); if (SubExprs[1]->isIntegerConstantExpr(Result, Context) && !isValidOrderingForOp(Result.getSExtValue(), Op)) Diag(SubExprs[1]->getLocStart(), diag::warn_atomic_op_has_invalid_memory_order) << SubExprs[1]->getSourceRange(); } d1225 1 a1225 1 return AE; d1249 1 a1249 1 E->setArg(ArgIndex, Arg.get()); d1284 1 a1284 1 FirstArg = FirstArgResult.get(); d1537 1 a1537 1 if (!NewBuiltinDecl) d1562 1 a1562 1 TheCall->setArg(i+1, Arg.get()); d1583 1 a1583 1 TheCall->setCallee(PromotedCall.get()); d1779 1 a1779 1 Cast->setSubExpr(nullptr); d1864 1 a1864 1 TheCall->setArg(i, nullptr); d1867 3 a1869 3 return new (Context) ShuffleVectorExpr(Context, exprs, resType, TheCall->getCallee()->getLocStart(), TheCall->getRParenLoc()); d1898 3 a1900 2 return new (Context) ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc); d1917 9 a1925 2 for (unsigned i = 1; i != NumArgs; ++i) if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3)) d1928 34 d1982 5 a1986 4 /// SemaBuiltinConstantArgRange - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression in the range [Low, High]. bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, int Low, int High) { d1990 2 a1991 2 Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) d1995 1 a1995 1 if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) d1998 2 a1999 1 if (Result.getSExtValue() < Low || Result.getSExtValue() > High) d2001 2 a2002 1 << Low << High << Arg->getSourceRange(); d2145 4 a2148 1 for (const auto *PVFormat : ND->specific_attrs()) { d2199 1 a2199 1 const StringLiteral *StrE = nullptr; d2348 1 a2348 1 unsigned specifierLen) override; d2351 3 a2353 4 const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID); d2356 2 a2357 2 const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen); d2360 2 a2361 2 const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen); d2363 1 a2363 1 void HandlePosition(const char *startPos, unsigned posLen) override; d2365 3 a2367 3 void HandleInvalidPosition(const char *startSpecifier, unsigned specifierLen, analyze_format_string::PositionContext p) override; d2369 1 a2369 1 void HandleZeroPosition(const char *startPos, unsigned posLen) override; d2371 1 a2371 1 void HandleNullChar(const char *nullCharacter) override; d2407 3 d2740 1 a2740 1 d2744 2 a2745 2 unsigned specifierLen) override; d2748 1 a2748 1 unsigned specifierLen) override; d2905 1 a2905 1 LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(), d2951 2 a2952 1 SourceLocation EndLoc = S.getLocForEndOfToken(E->getLocEnd()); d3281 1 a3281 1 SourceLocation After = S.getLocForEndOfToken(E->getLocEnd()); d3387 1 a3387 1 unsigned specifierLen) override; d3392 1 a3392 1 unsigned specifierLen) override; d3394 1 a3394 1 void HandleIncompleteScanList(const char *start, const char *end) override; d3499 2 a3500 3 bool success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), S.getLangOpts(), S.Context); d3780 1 a3780 1 static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { d3814 2 a3815 13 unsigned AbsKind, QualType ArgType) { bool EmitHeaderHint = true; const char *HeaderName = nullptr; const char *FunctionName = nullptr; if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) { FunctionName = "std::abs"; if (ArgType->isIntegralOrEnumerationType()) { HeaderName = "cstdlib"; } else if (ArgType->isRealFloatingType()) { HeaderName = "cmath"; } else { llvm_unreachable("Invalid Type"); } d3817 17 a3833 34 // Lookup all std::abs if (NamespaceDecl *Std = S.getStdNamespace()) { LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupQualifiedName(R, Std); for (const auto *I : R) { const FunctionDecl *FDecl = nullptr; if (const UsingShadowDecl *UsingD = dyn_cast(I)) { FDecl = dyn_cast(UsingD->getTargetDecl()); } else { FDecl = dyn_cast(I); } if (!FDecl) continue; // Found std::abs(), check that they are the right ones. if (FDecl->getNumParams() != 1) continue; // Check that the parameter type can handle the argument. QualType ParamType = FDecl->getParamDecl(0)->getType(); if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) && S.Context.getTypeSize(ArgType) <= S.Context.getTypeSize(ParamType)) { // Found a function, don't need the header hint. EmitHeaderHint = false; break; } } } } else { FunctionName = S.Context.BuiltinInfo.GetName(AbsKind); HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind); d3835 12 a3846 15 if (HeaderName) { DeclarationName DN(&S.Context.Idents.get(FunctionName)); LookupResult R(S, DN, Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupName(R, S.getCurScope()); if (R.isSingleResult()) { FunctionDecl *FD = dyn_cast(R.getFoundDecl()); if (FD && FD->getBuiltinID() == AbsKind) { EmitHeaderHint = false; } else { return; } } else if (!R.empty()) { return; d3848 2 d3854 1 a3854 1 << FunctionName << FixItHint::CreateReplacement(Range, FunctionName); d3856 4 a3859 20 if (!HeaderName) return; if (!EmitHeaderHint) return; S.Diag(Loc, diag::note_please_include_header) << HeaderName << FunctionName; } static bool IsFunctionStdAbs(const FunctionDecl *FDecl) { if (!FDecl) return false; if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr("abs")) return false; const NamespaceDecl *ND = dyn_cast(FDecl->getDeclContext()); while (ND && ND->isInlineNamespace()) { ND = dyn_cast(ND->getDeclContext()); a3860 8 if (!ND || !ND->getIdentifier() || !ND->getIdentifier()->isStr("std")) return false; if (!isa(ND->getDeclContext())) return false; return true; d3871 1 a3871 2 bool IsStdAbs = IsFunctionStdAbs(FDecl); if (AbsKind == 0 && !IsStdAbs) a3879 2 const char *FunctionName = IsStdAbs ? "std::abs" : Context.BuiltinInfo.GetName(AbsKind); d3882 1 a3882 1 << FunctionName a3886 5 // std::abs has overloads which prevent most of the absolute value problems // from occurring. if (IsStdAbs) return; d3904 1 a3904 1 Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); d3920 1 a3920 1 Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); d3942 1 d3946 5 a3950 3 S.Diag(FnLoc, diag::note_memsize_comparison_paren) << FnName << FixItHint::CreateInsertion( S.getLocForEndOfToken(Size->getLHS()->getLocEnd()), ")") d3952 1 a3952 1 S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence) d3954 2 a3955 2 << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()), ")"); d3979 1 a3979 1 return nullptr; d4069 1 a4069 1 SourceManager &SM = getSourceManager(); d4201 1 a4201 1 const Expr *CompareWithSrc = nullptr; d4250 1 a4250 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4270 1 a4270 1 return nullptr; d4273 1 a4273 1 return nullptr; d4322 1 a4322 1 SourceManager &SM = getSourceManager(); d4351 1 a4351 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4354 1 a4354 1 DstArg->printPretty(OS, nullptr, getPrintingPolicy()); d4374 1 a4374 1 Expr *stackE = nullptr; d4381 1 a4381 1 stackE = EvalAddr(RetValExp, refVars, /*ParentDecl=*/nullptr); d4383 1 a4383 1 stackE = EvalVal(RetValExp, refVars, /*ParentDecl=*/nullptr); d4386 1 a4386 1 if (!stackE) d4460 1 a4460 1 return nullptr; d4479 1 a4479 1 return nullptr; d4491 1 a4491 1 return nullptr; d4502 1 a4502 1 return nullptr; d4512 1 a4512 1 return nullptr; d4540 1 a4540 1 return nullptr; d4548 1 a4548 1 return nullptr; d4585 1 a4585 1 return nullptr; d4599 1 a4599 1 return nullptr; d4625 1 a4625 1 return nullptr; d4639 1 a4639 1 return nullptr; d4660 1 a4660 1 return nullptr; d4672 1 a4672 1 return nullptr; d4697 1 a4697 1 return nullptr; d4708 1 a4708 1 return nullptr; d4713 1 a4713 1 return nullptr; d4733 1 a4733 1 return nullptr; a5284 8 // TODO: Investigate using GetExprRange() to get tighter bounds // on the bit ranges. QualType OtherT = Other->getType(); IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT); unsigned OtherWidth = OtherRange.Width; bool OtherIsBooleanType = Other->isKnownToHaveBooleanValue(); d5286 1 a5286 1 if ((Value == 0) && (!OtherIsBooleanType)) d5290 7 a5296 1 bool IsTrue = true; d5298 2 a5299 10 // Used for diagnostic printout. enum { LiteralConstant = 0, CXXBoolLiteralTrue, CXXBoolLiteralFalse } LiteralOrBoolConstant = LiteralConstant; if (!OtherIsBooleanType) { QualType ConstantT = Constant->getType(); QualType CommonT = E->getLHS()->getType(); d5301 1 a5301 4 if (S.Context.hasSameUnqualifiedType(OtherT, ConstantT)) return; assert((OtherT->isIntegerType() && ConstantT->isIntegerType()) && "comparison with non-integer type"); d5303 15 a5317 26 bool ConstantSigned = ConstantT->isSignedIntegerType(); bool CommonSigned = CommonT->isSignedIntegerType(); bool EqualityOnly = false; if (CommonSigned) { // The common type is signed, therefore no signed to unsigned conversion. if (!OtherRange.NonNegative) { // Check that the constant is representable in type OtherT. if (ConstantSigned) { if (OtherWidth >= Value.getMinSignedBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits() + 1) return; } } else { // !OtherSigned // Check that the constant is representable in type OtherT. // Negative values are out of range. if (ConstantSigned) { if (Value.isNonNegative() && OtherWidth >= Value.getActiveBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits()) return; } d5319 7 a5325 2 } else { // !CommonSigned if (OtherRange.NonNegative) { a5327 16 } else if (!OtherRange.NonNegative && !ConstantSigned) { // Check to see if the constant is representable in OtherT. if (OtherWidth > Value.getActiveBits()) return; // Check to see if the constant is equivalent to a negative value // cast to CommonT. if (S.Context.getIntWidth(ConstantT) == S.Context.getIntWidth(CommonT) && Value.isNegative() && Value.getMinSignedBits() <= OtherWidth) return; // The constant value rests between values that OtherT can represent // after conversion. Relational comparison still works, but equality // comparisons will be tautological. EqualityOnly = true; } else { // OtherSigned && ConstantSigned assert(0 && "Two signed types converted to unsigned types."); d5330 21 d5352 1 a5352 1 bool PositiveConstant = !ConstantSigned || Value.isNonNegative(); d5354 10 a5363 15 if (op == BO_EQ || op == BO_NE) { IsTrue = op == BO_NE; } else if (EqualityOnly) { return; } else if (RhsConstant) { if (op == BO_GT || op == BO_GE) IsTrue = !PositiveConstant; else // op == BO_LT || op == BO_LE IsTrue = PositiveConstant; } else { if (op == BO_LT || op == BO_LE) IsTrue = !PositiveConstant; else // op == BO_GT || op == BO_GE IsTrue = PositiveConstant; } d5365 4 a5368 77 // Other isKnownToHaveBooleanValue enum CompareBoolWithConstantResult { AFals, ATrue, Unkwn }; enum ConstantValue { LT_Zero, Zero, One, GT_One, SizeOfConstVal }; enum ConstantSide { Lhs, Rhs, SizeOfConstSides }; static const struct LinkedConditions { CompareBoolWithConstantResult BO_LT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_LE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_EQ_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_NE_OP[SizeOfConstSides][SizeOfConstVal]; } TruthTable = { // Constant on LHS. | Constant on RHS. | // LT_Zero| Zero | One |GT_One| LT_Zero| Zero | One |GT_One| { { ATrue, Unkwn, AFals, AFals }, { AFals, AFals, Unkwn, ATrue } }, { { AFals, AFals, Unkwn, ATrue }, { ATrue, Unkwn, AFals, AFals } }, { { ATrue, ATrue, Unkwn, AFals }, { AFals, Unkwn, ATrue, ATrue } }, { { AFals, Unkwn, ATrue, ATrue }, { ATrue, ATrue, Unkwn, AFals } }, { { AFals, Unkwn, Unkwn, AFals }, { AFals, Unkwn, Unkwn, AFals } }, { { ATrue, Unkwn, Unkwn, ATrue }, { ATrue, Unkwn, Unkwn, ATrue } } }; bool ConstantIsBoolLiteral = isa(Constant); enum ConstantValue ConstVal = Zero; if (Value.isUnsigned() || Value.isNonNegative()) { if (Value == 0) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralFalse : LiteralConstant; ConstVal = Zero; } else if (Value == 1) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralTrue : LiteralConstant; ConstVal = One; } else { LiteralOrBoolConstant = LiteralConstant; ConstVal = GT_One; } } else { ConstVal = LT_Zero; } CompareBoolWithConstantResult CmpRes; switch (op) { case BO_LT: CmpRes = TruthTable.BO_LT_OP[RhsConstant][ConstVal]; break; case BO_GT: CmpRes = TruthTable.BO_GT_OP[RhsConstant][ConstVal]; break; case BO_LE: CmpRes = TruthTable.BO_LE_OP[RhsConstant][ConstVal]; break; case BO_GE: CmpRes = TruthTable.BO_GE_OP[RhsConstant][ConstVal]; break; case BO_EQ: CmpRes = TruthTable.BO_EQ_OP[RhsConstant][ConstVal]; break; case BO_NE: CmpRes = TruthTable.BO_NE_OP[RhsConstant][ConstVal]; break; default: CmpRes = Unkwn; break; } if (CmpRes == AFals) { IsTrue = false; } else if (CmpRes == ATrue) { IsTrue = true; } else { return; } d5373 1 a5373 1 const EnumConstantDecl *ED = nullptr; d5384 5 a5388 6 S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(diag::warn_out_of_range_compare) << OS.str() << LiteralOrBoolConstant << OtherT << (OtherIsBooleanType && !OtherT->isBooleanType()) << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); d5677 1 a5677 1 SourceLocation CC, bool *ICContext = nullptr) { a5730 2 if (auto VecTy = dyn_cast(Target)) Target = VecTy->getElementType().getTypePtr(); d5974 1 a5974 1 d6081 1 a6081 1 ValueDecl *D = nullptr; d6112 1 a6112 1 E->printPretty(S, nullptr, getPrintingPolicy()); d6162 2 a6163 1 << FixItHint::CreateInsertion(getLocForEndOfToken(E->getLocEnd()), "()"); d6288 1 a6288 1 Usage() : Use(nullptr), Seq() {} d6388 1 a6388 1 return nullptr; d6448 2 a6449 2 : Base(S.Context), SemaRef(S), Region(Tree.root()), ModAsSideEffect(nullptr), WorkList(WorkList), EvalTracker(nullptr) { d6734 1 a6734 1 Param->getIdentifier() == nullptr && d6901 1 a6901 1 const NamedDecl *ND = nullptr; d7044 1 a7044 1 RetainCycleOwner() : Variable(nullptr), Indirect(false) {} d7155 1 a7155 1 Variable(variable), Capturer(nullptr) {} d7199 1 a7199 1 return nullptr; d7216 1 a7216 1 return nullptr; d7292 1 a7292 1 if (!considerVariable(Var, /*DeclRefExpr=*/nullptr, Owner)) d7637 5 a7641 2 for (auto *Field2 : RD2->fields()) UnmatchedFields.insert(Field2); d7643 3 a7645 1 for (auto *Field1 : RD1->fields()) { d7651 1 a7651 1 if (isLayoutCompatible(C, Field1, *I)) { d7808 1 a7808 1 const ValueDecl *VD = nullptr; @ 1.1.1.7 log @Import clang 3.6svn r215315. @ text @d145 1 a148 14 case Builtin::BI__va_start: { switch (Context.getTargetInfo().getTriple().getArch()) { case llvm::Triple::arm: case llvm::Triple::thumb: if (SemaBuiltinVAStartARM(TheCall)) return ExprError(); break; default: if (SemaBuiltinVAStart(TheCall)) return ExprError(); break; } break; } a177 4 case Builtin::BI__assume: if (SemaBuiltinAssume(TheCall)) return ExprError(); break; a298 14 case Builtin::BI__builtin_operator_new: case Builtin::BI__builtin_operator_delete: if (!getLangOpts().CPlusPlus) { Diag(TheCall->getExprLoc(), diag::err_builtin_requires_language) << (BuiltinID == Builtin::BI__builtin_operator_new ? "__builtin_operator_new" : "__builtin_operator_delete") << "C++"; return ExprError(); } // CodeGen assumes it can find the global new and delete to call, // so ensure that they are declared. DeclareGlobalNewDelete(); break; d300 1 a300 1 d314 2 d440 2 a441 1 bool IsPolyUnsigned = Arch == llvm::Triple::aarch64; a474 1 BuiltinID == ARM::BI__builtin_arm_ldaex || a475 1 BuiltinID == ARM::BI__builtin_arm_stlex || d477 1 a477 3 BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && d480 1 a480 3 BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex; d587 1 a587 3 BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex) { d594 2 a595 2 // For intrinsics which take an immediate value as part of the instruction, // range check them here. d604 1 a604 2 case ARM::BI__builtin_arm_dsb: case ARM::BI__builtin_arm_isb: l = 0; u = 15; break; d616 1 a616 3 BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) { d623 1 a623 12 // For intrinsics which take an immediate value as part of the instruction, // range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case AArch64::BI__builtin_arm_dmb: case AArch64::BI__builtin_arm_dsb: case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break; } // FIXME: VFP Intrinsics should error if VFP not present. return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); a1701 52 bool Sema::SemaBuiltinVAStartARM(CallExpr *Call) { // void __va_start(va_list *ap, const char *named_addr, size_t slot_size, // const char *named_addr); Expr *Func = Call->getCallee(); if (Call->getNumArgs() < 3) return Diag(Call->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 3 << Call->getNumArgs(); // Determine whether the current function is variadic or not. bool IsVariadic; if (BlockScopeInfo *CurBlock = getCurBlock()) IsVariadic = CurBlock->TheDecl->isVariadic(); else if (FunctionDecl *FD = getCurFunctionDecl()) IsVariadic = FD->isVariadic(); else if (ObjCMethodDecl *MD = getCurMethodDecl()) IsVariadic = MD->isVariadic(); else llvm_unreachable("unexpected statement type"); if (!IsVariadic) { Diag(Func->getLocStart(), diag::err_va_start_used_in_non_variadic_function); return true; } // Type-check the first argument normally. if (checkBuiltinArgument(*this, Call, 0)) return true; static const struct { unsigned ArgNo; QualType Type; } ArgumentTypes[] = { { 1, Context.getPointerType(Context.CharTy.withConst()) }, { 2, Context.getSizeType() }, }; for (const auto &AT : ArgumentTypes) { const Expr *Arg = Call->getArg(AT.ArgNo)->IgnoreParens(); if (Arg->getType().getCanonicalType() == AT.Type.getCanonicalType()) continue; Diag(Arg->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg->getType() << AT.Type << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << AT.ArgNo + 1 << Arg->getType() << AT.Type; } return false; } a1919 14 /// SemaBuiltinAssume - Handle __assume (MS Extension). // __assume does not evaluate its arguments, and should warn if its argument // has side effects. bool Sema::SemaBuiltinAssume(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); if (Arg->isInstantiationDependent()) return false; if (Arg->HasSideEffects(Context)) return Diag(Arg->getLocStart(), diag::warn_assume_side_effects) << Arg->getSourceRange(); return false; } a3112 7 // Look through enums to their underlying type. bool IsEnum = false; if (auto EnumTy = ExprTy->getAs()) { ExprTy = EnumTy->getDecl()->getIntegerType(); IsEnum = true; } d3185 2 a3186 2 S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << IntendedTy << IsEnum d3238 1 a3238 1 << Name << IntendedTy << IsEnum d3247 2 a3248 2 S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum d3264 2 a3265 2 S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum d3456 2 a3457 2 S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false d3467 2 a3468 2 S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false d3838 1 a3838 2 S.Diag(Loc, diag::note_include_header_or_declare) << HeaderName << FunctionName; d3878 2 a3879 2 // Unsigned types cannot be negative. Suggest removing the absolute value // function call. d3965 9 a3973 29 /// \brief Determine whether the given type is or contains a dynamic class type /// (e.g., whether it has a vtable). static const CXXRecordDecl *getContainedDynamicClass(QualType T, bool &IsContained) { // Look through array types while ignoring qualifiers. const Type *Ty = T->getBaseElementTypeUnsafe(); IsContained = false; const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl(); RD = RD ? RD->getDefinition() : nullptr; if (!RD) return nullptr; if (RD->isDynamicClass()) return RD; // Check all the fields. If any bases were dynamic, the class is dynamic. // It's impossible for a class to transitively contain itself by value, so // infinite recursion is impossible. for (auto *FD : RD->fields()) { bool SubContained; if (const CXXRecordDecl *ContainedRD = getContainedDynamicClass(FD->getType(), SubContained)) { IsContained = true; return ContainedRD; } } return nullptr; d4047 2 a4048 2 !Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, SizeOfArg->getExprLoc())) { d4117 1 a4117 3 bool IsContained; if (const CXXRecordDecl *ContainedRD = getContainedDynamicClass(PointeeTy, IsContained)) { d4135 2 a4136 1 << FnName << IsContained << ContainedRD << OperationType d4574 1 a4588 8 case CK_BitCast: if (SubExpr->getType()->isAnyPointerType() || SubExpr->getType()->isBlockPointerType() || SubExpr->getType()->isObjCQualifiedIdType()) return EvalAddr(SubExpr, refVars, ParentDecl); else return nullptr; a4855 2 if (const AtomicType *AT = dyn_cast(T)) T = AT->getValueType().getTypePtr(); a4890 2 if (const AtomicType *AT = dyn_cast(T)) T = AT->getValueType().getTypePtr(); a5292 2 if (const AtomicType *AT = dyn_cast(OtherT)) OtherT = AT->getValueType(); d5352 1 a5352 3 } else { // OtherSigned assert(!ConstantSigned && "Two signed types converted to unsigned types."); d5366 2 d6038 1 a6038 1 AnalyzeImplicitConversions(S, E->getCond(), E->getQuestionLoc()); d6049 2 a6050 1 if (!S.Diags.isIgnored(diag::warn_impcast_integer_sign_conditional, CC)) a6153 48 // Helper function for Sema::DiagnoseAlwaysNonNullPointer. // Returns true when emitting a warning about taking the address of a reference. static bool CheckForReference(Sema &SemaRef, const Expr *E, PartialDiagnostic PD) { E = E->IgnoreParenImpCasts(); const FunctionDecl *FD = nullptr; if (const DeclRefExpr *DRE = dyn_cast(E)) { if (!DRE->getDecl()->getType()->isReferenceType()) return false; } else if (const MemberExpr *M = dyn_cast(E)) { if (!M->getMemberDecl()->getType()->isReferenceType()) return false; } else if (const CallExpr *Call = dyn_cast(E)) { if (!Call->getCallReturnType()->isReferenceType()) return false; FD = Call->getDirectCallee(); } else { return false; } SemaRef.Diag(E->getExprLoc(), PD); // If possible, point to location of function. if (FD) { SemaRef.Diag(FD->getLocation(), diag::note_reference_is_return_value) << FD; } return true; } // Returns true if the SourceLocation is expanded from any macro body. // Returns false if the SourceLocation is invalid, is from not in a macro // expansion, or is from expanded from a top-level macro argument. static bool IsInAnyMacroBody(const SourceManager &SM, SourceLocation Loc) { if (Loc.isInvalid()) return false; while (Loc.isMacroID()) { if (SM.isMacroBodyExpansion(Loc)) return true; Loc = SM.getImmediateMacroCallerLoc(Loc); } return false; } a6162 2 if (!E) return; d6165 1 a6165 4 if (E->getExprLoc().isMacroID()) { const SourceManager &SM = getSourceManager(); if (IsInAnyMacroBody(SM, E->getExprLoc()) || IsInAnyMacroBody(SM, Range.getBegin())) a6166 1 } a6170 7 if (isa(E)) { unsigned DiagID = IsCompare ? diag::warn_this_null_compare : diag::warn_this_bool_conversion; Diag(E->getExprLoc(), DiagID) << E->getSourceRange() << Range << IsEqual; return; } a6179 11 if (IsAddressOf) { unsigned DiagID = IsCompare ? diag::warn_address_of_reference_null_compare : diag::warn_address_of_reference_bool_conversion; PartialDiagnostic PD = PDiag(DiagID) << E->getSourceRange() << Range << IsEqual; if (CheckForReference(*this, E, PD)) { return; } } d6196 7 a6202 3 // Address of function is used to silence the function warning. if (IsAddressOf && IsFunction) { return; d6884 3 a6886 1 if (getDiagnostics().isIgnored(diag::warn_cast_align, TRange.getBegin())) d7254 2 a7255 3 Context(Context), Variable(variable), Capturer(nullptr), VarWillBeReased(false) {} ASTContext &Context; a7257 1 bool VarWillBeReased; a7281 15 void VisitBinaryOperator(BinaryOperator *BinOp) { if (!Variable || VarWillBeReased || BinOp->getOpcode() != BO_Assign) return; Expr *LHS = BinOp->getLHS(); if (const DeclRefExpr *DRE = dyn_cast_or_null(LHS)) { if (DRE->getDecl() != Variable) return; if (Expr *RHS = BinOp->getRHS()) { RHS = RHS->IgnoreParenCasts(); llvm::APSInt Value; VarWillBeReased = (RHS && RHS->isIntegerConstantExpr(Value, Context) && Value == 0); } } } d7319 1 a7319 1 return visitor.VarWillBeReased ? nullptr : visitor.Capturer; d7478 3 a7480 1 if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) d7605 2 a7606 1 if (Diags.isIgnored(DiagID, NBody->getSemiLoc())) @ 1.1.1.7.2.1 log @Update LLVM to 3.6.1, requested by joerg in ticket 824. @ text @a113 91 static void SemaBuiltinMemChkCall(Sema &S, FunctionDecl *FDecl, CallExpr *TheCall, unsigned SizeIdx, unsigned DstSizeIdx) { if (TheCall->getNumArgs() <= SizeIdx || TheCall->getNumArgs() <= DstSizeIdx) return; const Expr *SizeArg = TheCall->getArg(SizeIdx); const Expr *DstSizeArg = TheCall->getArg(DstSizeIdx); llvm::APSInt Size, DstSize; // find out if both sizes are known at compile time if (!SizeArg->EvaluateAsInt(Size, S.Context) || !DstSizeArg->EvaluateAsInt(DstSize, S.Context)) return; if (Size.ule(DstSize)) return; // confirmed overflow so generate the diagnostic. IdentifierInfo *FnName = FDecl->getIdentifier(); SourceLocation SL = TheCall->getLocStart(); SourceRange SR = TheCall->getSourceRange(); S.Diag(SL, diag::warn_memcpy_chk_overflow) << SR << FnName; } static bool SemaBuiltinCallWithStaticChain(Sema &S, CallExpr *BuiltinCall) { if (checkArgCount(S, BuiltinCall, 2)) return true; SourceLocation BuiltinLoc = BuiltinCall->getLocStart(); Expr *Builtin = BuiltinCall->getCallee()->IgnoreImpCasts(); Expr *Call = BuiltinCall->getArg(0); Expr *Chain = BuiltinCall->getArg(1); if (Call->getStmtClass() != Stmt::CallExprClass) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_not_call) << Call->getSourceRange(); return true; } auto CE = cast(Call); if (CE->getCallee()->getType()->isBlockPointerType()) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_block_call) << Call->getSourceRange(); return true; } const Decl *TargetDecl = CE->getCalleeDecl(); if (const FunctionDecl *FD = dyn_cast_or_null(TargetDecl)) if (FD->getBuiltinID()) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_builtin_call) << Call->getSourceRange(); return true; } if (isa(CE->getCallee()->IgnoreParens())) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_pdtor_call) << Call->getSourceRange(); return true; } ExprResult ChainResult = S.UsualUnaryConversions(Chain); if (ChainResult.isInvalid()) return true; if (!ChainResult.get()->getType()->isPointerType()) { S.Diag(BuiltinLoc, diag::err_second_argument_to_cwsc_not_pointer) << Chain->getSourceRange(); return true; } QualType ReturnTy = CE->getCallReturnType(); QualType ArgTys[2] = { ReturnTy, ChainResult.get()->getType() }; QualType BuiltinTy = S.Context.getFunctionType( ReturnTy, ArgTys, FunctionProtoType::ExtProtoInfo()); QualType BuiltinPtrTy = S.Context.getPointerType(BuiltinTy); Builtin = S.ImpCastExprToType(Builtin, BuiltinPtrTy, CK_BuiltinFnToFnPtr).get(); BuiltinCall->setType(CE->getType()); BuiltinCall->setValueKind(CE->getValueKind()); BuiltinCall->setObjectKind(CE->getObjectKind()); BuiltinCall->setCallee(Builtin); BuiltinCall->setArg(1, ChainResult.get()); return false; } d115 1 a115 2 Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID, CallExpr *TheCall) { a191 1 case Builtin::BI__builtin_assume: a194 4 case Builtin::BI__builtin_assume_aligned: if (SemaBuiltinAssumeAligned(TheCall)) return ExprError(); break; a202 4 case Builtin::BI__builtin_setjmp: if (SemaBuiltinSetjmp(TheCall)) return ExprError(); break; a241 6 case Builtin::BI__sync_fetch_and_nand: case Builtin::BI__sync_fetch_and_nand_1: case Builtin::BI__sync_fetch_and_nand_2: case Builtin::BI__sync_fetch_and_nand_4: case Builtin::BI__sync_fetch_and_nand_8: case Builtin::BI__sync_fetch_and_nand_16: a271 6 case Builtin::BI__sync_nand_and_fetch: case Builtin::BI__sync_nand_and_fetch_1: case Builtin::BI__sync_nand_and_fetch_2: case Builtin::BI__sync_nand_and_fetch_4: case Builtin::BI__sync_nand_and_fetch_8: case Builtin::BI__sync_nand_and_fetch_16: a329 25 // check secure string manipulation functions where overflows // are detectable at compile time case Builtin::BI__builtin___memcpy_chk: case Builtin::BI__builtin___memmove_chk: case Builtin::BI__builtin___memset_chk: case Builtin::BI__builtin___strlcat_chk: case Builtin::BI__builtin___strlcpy_chk: case Builtin::BI__builtin___strncat_chk: case Builtin::BI__builtin___strncpy_chk: case Builtin::BI__builtin___stpncpy_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 2, 3); break; case Builtin::BI__builtin___memccpy_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 3, 4); break; case Builtin::BI__builtin___snprintf_chk: case Builtin::BI__builtin___vsnprintf_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 1, 3); break; case Builtin::BI__builtin_call_with_static_chain: if (SemaBuiltinCallWithStaticChain(*this, TheCall)) return ExprError(); break; a626 5 if (BuiltinID == ARM::BI__builtin_arm_prefetch) { return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 1); } d641 1 a641 2 case ARM::BI__builtin_arm_isb: case ARM::BI__builtin_arm_dbg: l = 0; u = 15; break; a658 7 if (BuiltinID == AArch64::BI__builtin_arm_prefetch) { return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 2) || SemaBuiltinConstantArgRange(TheCall, 3, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 4, 0, 1); } d672 1 a692 1 unsigned i = 0, l = 0, u = 0; d694 3 a696 6 default: return false; case X86::BI_mm_prefetch: i = 1; l = 0; u = 3; break; case X86::BI__builtin_ia32_cmpps: case X86::BI__builtin_ia32_cmpss: case X86::BI__builtin_ia32_cmppd: case X86::BI__builtin_ia32_cmpsd: i = 2; l = 0; u = 31; break; d698 1 a698 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u); a752 51 bool Sema::GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx) { FormatStringInfo FSI; if ((GetFormatStringType(Format) == FST_NSString) && getFormatStringInfo(Format, false, &FSI)) { Idx = FSI.FormatIdx; return true; } return false; } /// \brief Diagnose use of %s directive in an NSString which is being passed /// as formatting string to formatting method. static void DiagnoseCStringFormatDirectiveInCFAPI(Sema &S, const NamedDecl *FDecl, Expr **Args, unsigned NumArgs) { unsigned Idx = 0; bool Format = false; ObjCStringFormatFamily SFFamily = FDecl->getObjCFStringFormattingFamily(); if (SFFamily == ObjCStringFormatFamily::SFF_CFString) { Idx = 2; Format = true; } else for (const auto *I : FDecl->specific_attrs()) { if (S.GetFormatNSStringIdx(I, Idx)) { Format = true; break; } } if (!Format || NumArgs <= Idx) return; const Expr *FormatExpr = Args[Idx]; if (const CStyleCastExpr *CSCE = dyn_cast(FormatExpr)) FormatExpr = CSCE->getSubExpr(); const StringLiteral *FormatString; if (const ObjCStringLiteral *OSL = dyn_cast(FormatExpr->IgnoreParenImpCasts())) FormatString = OSL->getString(); else FormatString = dyn_cast(FormatExpr->IgnoreParenImpCasts()); if (!FormatString) return; if (S.FormatStringHasSArg(FormatString)) { S.Diag(FormatExpr->getExprLoc(), diag::warn_objc_cdirective_format_string) << "%s" << 1 << 1; S.Diag(FDecl->getLocation(), diag::note_entity_declared_at) << FDecl->getDeclName(); } } d755 1 a755 1 ArrayRef Args, a757 1 llvm::SmallBitVector NonNullArgs; d759 2 a760 15 if (!NonNull->args_size()) { // Easy case: all pointer arguments are nonnull. for (const auto *Arg : Args) if (S.isValidPointerAttrType(Arg->getType())) CheckNonNullArgument(S, Arg, CallSiteLoc); return; } for (unsigned Val : NonNull->args()) { if (Val >= Args.size()) continue; if (NonNullArgs.empty()) NonNullArgs.resize(Args.size()); NonNullArgs.set(Val); } d770 1 a770 1 unsigned ArgIndex = 0; d772 1 a772 1 I != E; ++I, ++ArgIndex) { d774 2 a775 3 if (PVD->hasAttr() || (ArgIndex < NonNullArgs.size() && NonNullArgs[ArgIndex])) CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); a776 5 // In case this is a variadic call, check any remaining arguments. for (/**/; ArgIndex < NonNullArgs.size(); ++ArgIndex) if (NonNullArgs[ArgIndex]) CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); d814 1 a814 1 CheckNonNullArguments(*this, FDecl, Args, Loc); d854 1 a854 1 checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumParams, a864 2 if (getLangOpts().ObjC1) DiagnoseCStringFormatDirectiveInCFAPI(*this, FDecl, Args, NumArgs); d913 2 a914 2 checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), d929 2 a930 1 llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), a1120 5 if (IsC11 && ValType->isPointerType() && RequireCompleteType(Ptr->getLocStart(), ValType->getPointeeType(), diag::err_incomplete_type)) { return ExprError(); } a1382 1 BUILTIN_ROW(__sync_fetch_and_nand), a1388 1 BUILTIN_ROW(__sync_nand_and_fetch), a1417 1 bool WarnAboutSemanticsChange = false; a1464 10 case Builtin::BI__sync_fetch_and_nand: case Builtin::BI__sync_fetch_and_nand_1: case Builtin::BI__sync_fetch_and_nand_2: case Builtin::BI__sync_fetch_and_nand_4: case Builtin::BI__sync_fetch_and_nand_8: case Builtin::BI__sync_fetch_and_nand_16: BuiltinIndex = 5; WarnAboutSemanticsChange = true; break; d1471 1 a1471 1 BuiltinIndex = 6; d1480 1 a1480 1 BuiltinIndex = 7; d1489 1 a1489 1 BuiltinIndex = 8; d1498 1 a1498 1 BuiltinIndex = 9; d1507 1 a1507 11 BuiltinIndex = 10; break; case Builtin::BI__sync_nand_and_fetch: case Builtin::BI__sync_nand_and_fetch_1: case Builtin::BI__sync_nand_and_fetch_2: case Builtin::BI__sync_nand_and_fetch_4: case Builtin::BI__sync_nand_and_fetch_8: case Builtin::BI__sync_nand_and_fetch_16: BuiltinIndex = 11; WarnAboutSemanticsChange = true; d1516 1 a1516 1 BuiltinIndex = 12; d1526 1 a1526 1 BuiltinIndex = 13; d1537 1 a1537 1 BuiltinIndex = 14; d1546 1 a1546 1 BuiltinIndex = 15; d1557 1 a1557 1 BuiltinIndex = 16; a1569 5 if (WarnAboutSemanticsChange) { Diag(TheCall->getLocEnd(), diag::warn_sync_fetch_and_nand_semantics_change) << TheCall->getCallee()->getSourceRange(); } d2031 1 a2031 40 << Arg->getSourceRange() << cast(TheCall->getCalleeDecl())->getIdentifier(); return false; } /// Handle __builtin_assume_aligned. This is declared /// as (const void*, size_t, ...) and can take one optional constant int arg. bool Sema::SemaBuiltinAssumeAligned(CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs > 3) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange(); // The alignment must be a constant integer. Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (!Result.isPowerOf2()) return Diag(TheCall->getLocStart(), diag::err_alignment_not_power_of_two) << Arg->getSourceRange(); } if (NumArgs > 2) { ExprResult Arg(TheCall->getArg(2)); InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, Context.getSizeType(), false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(2, Arg.get()); } d2076 1 a2076 2 /// This checks that the target supports __builtin_longjmp and /// that val is a constant 1. a2077 4 if (!Context.getTargetInfo().hasSjLjLowering()) return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_unsupported) << SourceRange(TheCall->getLocStart(), TheCall->getLocEnd()); a2091 10 /// SemaBuiltinSetjmp - Handle __builtin_setjmp(void *env[5]). /// This checks that the target supports __builtin_setjmp. bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) { if (!Context.getTargetInfo().hasSjLjLowering()) return Diag(TheCall->getLocStart(), diag::err_builtin_setjmp_unsupported) << SourceRange(TheCall->getLocStart(), TheCall->getLocEnd()); return false; } a3177 55 static std::pair shouldNotPrintDirectly(const ASTContext &Context, QualType IntendedTy, const Expr *E) { // Use a 'while' to peel off layers of typedefs. QualType TyTy = IntendedTy; while (const TypedefType *UserTy = TyTy->getAs()) { StringRef Name = UserTy->getDecl()->getName(); QualType CastTy = llvm::StringSwitch(Name) .Case("NSInteger", Context.LongTy) .Case("NSUInteger", Context.UnsignedLongTy) .Case("SInt32", Context.IntTy) .Case("UInt32", Context.UnsignedIntTy) .Default(QualType()); if (!CastTy.isNull()) return std::make_pair(CastTy, Name); TyTy = UserTy->desugar(); } // Strip parens if necessary. if (const ParenExpr *PE = dyn_cast(E)) return shouldNotPrintDirectly(Context, PE->getSubExpr()->getType(), PE->getSubExpr()); // If this is a conditional expression, then its result type is constructed // via usual arithmetic conversions and thus there might be no necessary // typedef sugar there. Recurse to operands to check for NSInteger & // Co. usage condition. if (const ConditionalOperator *CO = dyn_cast(E)) { QualType TrueTy, FalseTy; StringRef TrueName, FalseName; std::tie(TrueTy, TrueName) = shouldNotPrintDirectly(Context, CO->getTrueExpr()->getType(), CO->getTrueExpr()); std::tie(FalseTy, FalseName) = shouldNotPrintDirectly(Context, CO->getFalseExpr()->getType(), CO->getFalseExpr()); if (TrueTy == FalseTy) return std::make_pair(TrueTy, TrueName); else if (TrueTy.isNull()) return std::make_pair(FalseTy, FalseName); else if (FalseTy.isNull()) return std::make_pair(TrueTy, TrueName); } return std::make_pair(QualType(), StringRef()); } d3269 1 a3269 1 bool ShouldNotPrintDirectly = false; StringRef CastTyName; d3271 17 a3287 5 QualType CastTy; std::tie(CastTy, CastTyName) = shouldNotPrintDirectly(S.Context, IntendedTy, E); if (!CastTy.isNull()) { IntendedTy = CastTy; ShouldNotPrintDirectly = true; d3304 1 a3304 1 if (IntendedTy == ExprTy && !ShouldNotPrintDirectly) { d3358 2 a3359 5 StringRef Name; if (const TypedefType *TypedefTy = dyn_cast(ExprTy)) Name = TypedefTy->getDecl()->getName(); else Name = CastTyName; a3394 1 case Sema::VAK_MSVCUndefined: a3671 14 bool Sema::FormatStringHasSArg(const StringLiteral *FExpr) { // Str - The format string. NOTE: this is NOT null-terminated! StringRef StrRef = FExpr->getString(); const char *Str = StrRef.data(); // Account for cases where the string literal is truncated in a declaration. const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); assert(T && "String literal not of constant array type!"); size_t TypeSize = T->getSize().getZExtValue(); size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); return analyze_format_string::ParseFormatStringHasSArg(Str, Str + StrLen, getLangOpts(), Context.getTargetInfo()); } d4346 1 a4346 2 unsigned NumArgs = Call->getNumArgs(); if ((NumArgs != 3) && (NumArgs != 4)) d4628 1 a4628 1 if (DR->refersToEnclosingVariableOrCapture()) d4795 1 a4795 1 if (DR->refersToEnclosingVariableOrCapture()) d5660 2 a5661 7 // Only analyze comparison operators where both sides have been converted to // the same type. if (!S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType())) return AnalyzeImpConvsInComparison(S, E); // Don't analyze value-dependent comparisons directly. a5931 35 static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { if (S.Diags.isIgnored(diag::warn_impcast_null_pointer_to_integer, E->getExprLoc())) return; // Check for NULL (GNUNull) or nullptr (CXX11_nullptr). const Expr::NullPointerConstantKind NullKind = E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull); if (NullKind != Expr::NPCK_GNUNull && NullKind != Expr::NPCK_CXX11_nullptr) return; // Return if target type is a safe conversion. if (T->isAnyPointerType() || T->isBlockPointerType() || T->isMemberPointerType() || !T->isScalarType() || T->isNullPtrType()) return; SourceLocation Loc = E->getSourceRange().getBegin(); // __null is usually wrapped in a macro. Go up a macro if that is the case. if (NullKind == Expr::NPCK_GNUNull) { if (Loc.isMacroID()) Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; } // Only warn if the null and context location are in the same macro expansion. if (S.SourceMgr.getFileID(Loc) != S.SourceMgr.getFileID(CC)) return; S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) << (NullKind == Expr::NPCK_CXX11_nullptr) << T << clang::SourceRange(CC) << FixItHint::CreateReplacement(Loc, S.getFixItZeroLiteralForType(T, Loc)); } d6074 13 a6086 1 DiagnoseNullConversion(S, E, T, CC); a6221 8 /// CheckBoolLikeConversion - Check conversion of given expression to boolean. /// Input argument E is a logical expression. static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { if (S.getLangOpts().Bool) return; CheckImplicitConversion(S, E->IgnoreParenImpCasts(), S.Context.BoolTy, CC); } a6300 14 if (BO && BO->isLogicalOp()) { Expr *SubExpr = BO->getLHS()->IgnoreParenImpCasts(); if (!IsLogicalAndOperator || !isa(SubExpr)) ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); SubExpr = BO->getRHS()->IgnoreParenImpCasts(); if (!IsLogicalAndOperator || !isa(SubExpr)) ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); } if (const UnaryOperator *U = dyn_cast(E)) if (U->getOpcode() == UO_LNot) ::CheckBoolLikeConversion(S, U->getSubExpr(), CC); d6420 1 a6420 34 // Check for parameter decl with nonnull attribute if (const ParmVarDecl* PV = dyn_cast(D)) { if (getCurFunction() && !getCurFunction()->ModifiedNonNullParams.count(PV)) if (const FunctionDecl* FD = dyn_cast(PV->getDeclContext())) { unsigned NumArgs = FD->getNumParams(); llvm::SmallBitVector AttrNonNull(NumArgs); for (const auto *NonNull : FD->specific_attrs()) { if (!NonNull->args_size()) { AttrNonNull.set(0, NumArgs); break; } for (unsigned Val : NonNull->args()) { if (Val >= NumArgs) continue; AttrNonNull.set(Val); } } if (!AttrNonNull.empty()) for (unsigned i = 0; i < NumArgs; ++i) if (FD->getParamDecl(i) == PV && (AttrNonNull[i] || PV->hasAttr())) { std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, nullptr, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_nonnull_parameter_compare : diag::warn_cast_nonnull_to_bool; Diag(E->getExprLoc(), DiagID) << S.str() << E->getSourceRange() << Range << IsEqual; return; } } } a6515 6 /// CheckBoolLikeConversion - Check conversion of given expression to boolean. /// Input argument E is a logical expression. void Sema::CheckBoolLikeConversion(Expr *E, SourceLocation CC) { ::CheckBoolLikeConversion(*this, E, CC); } d6519 2 a6520 2 if (isa(E->IgnoreParenCasts())) E->IgnoreParenCasts()->EvaluateForOverflow(Context); d6650 5 a6654 6 for (auto MI = ModAsSideEffect.rbegin(), ME = ModAsSideEffect.rend(); MI != ME; ++MI) { UsageInfo &U = Self.UsageMap[MI->first]; auto &SideEffectUsage = U.Uses[UK_ModAsSideEffect]; Self.addUsage(U, MI->first, SideEffectUsage.Use, UK_ModAsValue); SideEffectUsage = MI->second; a7886 90 //===--- CHECK: Warn on self move with std::move. -------------------------===// /// DiagnoseSelfMove - Emits a warning if a value is moved to itself. void Sema::DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, SourceLocation OpLoc) { if (Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, OpLoc)) return; if (!ActiveTemplateInstantiations.empty()) return; // Strip parens and casts away. LHSExpr = LHSExpr->IgnoreParenImpCasts(); RHSExpr = RHSExpr->IgnoreParenImpCasts(); // Check for a call expression const CallExpr *CE = dyn_cast(RHSExpr); if (!CE || CE->getNumArgs() != 1) return; // Check for a call to std::move const FunctionDecl *FD = CE->getDirectCallee(); if (!FD || !FD->isInStdNamespace() || !FD->getIdentifier() || !FD->getIdentifier()->isStr("move")) return; // Get argument from std::move RHSExpr = CE->getArg(0); const DeclRefExpr *LHSDeclRef = dyn_cast(LHSExpr); const DeclRefExpr *RHSDeclRef = dyn_cast(RHSExpr); // Two DeclRefExpr's, check that the decls are the same. if (LHSDeclRef && RHSDeclRef) { if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) return; if (LHSDeclRef->getDecl()->getCanonicalDecl() != RHSDeclRef->getDecl()->getCanonicalDecl()) return; Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); return; } // Member variables require a different approach to check for self moves. // MemberExpr's are the same if every nested MemberExpr refers to the same // Decl and that the base Expr's are DeclRefExpr's with the same Decl or // the base Expr's are CXXThisExpr's. const Expr *LHSBase = LHSExpr; const Expr *RHSBase = RHSExpr; const MemberExpr *LHSME = dyn_cast(LHSExpr); const MemberExpr *RHSME = dyn_cast(RHSExpr); if (!LHSME || !RHSME) return; while (LHSME && RHSME) { if (LHSME->getMemberDecl()->getCanonicalDecl() != RHSME->getMemberDecl()->getCanonicalDecl()) return; LHSBase = LHSME->getBase(); RHSBase = RHSME->getBase(); LHSME = dyn_cast(LHSBase); RHSME = dyn_cast(RHSBase); } LHSDeclRef = dyn_cast(LHSBase); RHSDeclRef = dyn_cast(RHSBase); if (LHSDeclRef && RHSDeclRef) { if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) return; if (LHSDeclRef->getDecl()->getCanonicalDecl() != RHSDeclRef->getDecl()->getCanonicalDecl()) return; Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); return; } if (isa(LHSBase) && isa(RHSBase)) Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); } @ 1.1.1.8 log @Import Clang 3.6RC1 r227398. @ text @a113 91 static void SemaBuiltinMemChkCall(Sema &S, FunctionDecl *FDecl, CallExpr *TheCall, unsigned SizeIdx, unsigned DstSizeIdx) { if (TheCall->getNumArgs() <= SizeIdx || TheCall->getNumArgs() <= DstSizeIdx) return; const Expr *SizeArg = TheCall->getArg(SizeIdx); const Expr *DstSizeArg = TheCall->getArg(DstSizeIdx); llvm::APSInt Size, DstSize; // find out if both sizes are known at compile time if (!SizeArg->EvaluateAsInt(Size, S.Context) || !DstSizeArg->EvaluateAsInt(DstSize, S.Context)) return; if (Size.ule(DstSize)) return; // confirmed overflow so generate the diagnostic. IdentifierInfo *FnName = FDecl->getIdentifier(); SourceLocation SL = TheCall->getLocStart(); SourceRange SR = TheCall->getSourceRange(); S.Diag(SL, diag::warn_memcpy_chk_overflow) << SR << FnName; } static bool SemaBuiltinCallWithStaticChain(Sema &S, CallExpr *BuiltinCall) { if (checkArgCount(S, BuiltinCall, 2)) return true; SourceLocation BuiltinLoc = BuiltinCall->getLocStart(); Expr *Builtin = BuiltinCall->getCallee()->IgnoreImpCasts(); Expr *Call = BuiltinCall->getArg(0); Expr *Chain = BuiltinCall->getArg(1); if (Call->getStmtClass() != Stmt::CallExprClass) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_not_call) << Call->getSourceRange(); return true; } auto CE = cast(Call); if (CE->getCallee()->getType()->isBlockPointerType()) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_block_call) << Call->getSourceRange(); return true; } const Decl *TargetDecl = CE->getCalleeDecl(); if (const FunctionDecl *FD = dyn_cast_or_null(TargetDecl)) if (FD->getBuiltinID()) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_builtin_call) << Call->getSourceRange(); return true; } if (isa(CE->getCallee()->IgnoreParens())) { S.Diag(BuiltinLoc, diag::err_first_argument_to_cwsc_pdtor_call) << Call->getSourceRange(); return true; } ExprResult ChainResult = S.UsualUnaryConversions(Chain); if (ChainResult.isInvalid()) return true; if (!ChainResult.get()->getType()->isPointerType()) { S.Diag(BuiltinLoc, diag::err_second_argument_to_cwsc_not_pointer) << Chain->getSourceRange(); return true; } QualType ReturnTy = CE->getCallReturnType(); QualType ArgTys[2] = { ReturnTy, ChainResult.get()->getType() }; QualType BuiltinTy = S.Context.getFunctionType( ReturnTy, ArgTys, FunctionProtoType::ExtProtoInfo()); QualType BuiltinPtrTy = S.Context.getPointerType(BuiltinTy); Builtin = S.ImpCastExprToType(Builtin, BuiltinPtrTy, CK_BuiltinFnToFnPtr).get(); BuiltinCall->setType(CE->getType()); BuiltinCall->setValueKind(CE->getValueKind()); BuiltinCall->setObjectKind(CE->getObjectKind()); BuiltinCall->setCallee(Builtin); BuiltinCall->setArg(1, ChainResult.get()); return false; } d115 1 a115 2 Sema::CheckBuiltinFunctionCall(FunctionDecl *FDecl, unsigned BuiltinID, CallExpr *TheCall) { a191 1 case Builtin::BI__builtin_assume: a194 4 case Builtin::BI__builtin_assume_aligned: if (SemaBuiltinAssumeAligned(TheCall)) return ExprError(); break; a241 6 case Builtin::BI__sync_fetch_and_nand: case Builtin::BI__sync_fetch_and_nand_1: case Builtin::BI__sync_fetch_and_nand_2: case Builtin::BI__sync_fetch_and_nand_4: case Builtin::BI__sync_fetch_and_nand_8: case Builtin::BI__sync_fetch_and_nand_16: a271 6 case Builtin::BI__sync_nand_and_fetch: case Builtin::BI__sync_nand_and_fetch_1: case Builtin::BI__sync_nand_and_fetch_2: case Builtin::BI__sync_nand_and_fetch_4: case Builtin::BI__sync_nand_and_fetch_8: case Builtin::BI__sync_nand_and_fetch_16: a329 25 // check secure string manipulation functions where overflows // are detectable at compile time case Builtin::BI__builtin___memcpy_chk: case Builtin::BI__builtin___memmove_chk: case Builtin::BI__builtin___memset_chk: case Builtin::BI__builtin___strlcat_chk: case Builtin::BI__builtin___strlcpy_chk: case Builtin::BI__builtin___strncat_chk: case Builtin::BI__builtin___strncpy_chk: case Builtin::BI__builtin___stpncpy_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 2, 3); break; case Builtin::BI__builtin___memccpy_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 3, 4); break; case Builtin::BI__builtin___snprintf_chk: case Builtin::BI__builtin___vsnprintf_chk: SemaBuiltinMemChkCall(*this, FDecl, TheCall, 1, 3); break; case Builtin::BI__builtin_call_with_static_chain: if (SemaBuiltinCallWithStaticChain(*this, TheCall)) return ExprError(); break; a626 5 if (BuiltinID == ARM::BI__builtin_arm_prefetch) { return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 1); } d641 1 a641 2 case ARM::BI__builtin_arm_isb: case ARM::BI__builtin_arm_dbg: l = 0; u = 15; break; a658 7 if (BuiltinID == AArch64::BI__builtin_arm_prefetch) { return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 2) || SemaBuiltinConstantArgRange(TheCall, 3, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 4, 0, 1); } d672 1 a692 1 unsigned i = 0, l = 0, u = 0; d694 3 a696 6 default: return false; case X86::BI_mm_prefetch: i = 1; l = 0; u = 3; break; case X86::BI__builtin_ia32_cmpps: case X86::BI__builtin_ia32_cmpss: case X86::BI__builtin_ia32_cmppd: case X86::BI__builtin_ia32_cmpsd: i = 2; l = 0; u = 31; break; d698 1 a698 1 return SemaBuiltinConstantArgRange(TheCall, i, l, u); a752 51 bool Sema::GetFormatNSStringIdx(const FormatAttr *Format, unsigned &Idx) { FormatStringInfo FSI; if ((GetFormatStringType(Format) == FST_NSString) && getFormatStringInfo(Format, false, &FSI)) { Idx = FSI.FormatIdx; return true; } return false; } /// \brief Diagnose use of %s directive in an NSString which is being passed /// as formatting string to formatting method. static void DiagnoseCStringFormatDirectiveInCFAPI(Sema &S, const NamedDecl *FDecl, Expr **Args, unsigned NumArgs) { unsigned Idx = 0; bool Format = false; ObjCStringFormatFamily SFFamily = FDecl->getObjCFStringFormattingFamily(); if (SFFamily == ObjCStringFormatFamily::SFF_CFString) { Idx = 2; Format = true; } else for (const auto *I : FDecl->specific_attrs()) { if (S.GetFormatNSStringIdx(I, Idx)) { Format = true; break; } } if (!Format || NumArgs <= Idx) return; const Expr *FormatExpr = Args[Idx]; if (const CStyleCastExpr *CSCE = dyn_cast(FormatExpr)) FormatExpr = CSCE->getSubExpr(); const StringLiteral *FormatString; if (const ObjCStringLiteral *OSL = dyn_cast(FormatExpr->IgnoreParenImpCasts())) FormatString = OSL->getString(); else FormatString = dyn_cast(FormatExpr->IgnoreParenImpCasts()); if (!FormatString) return; if (S.FormatStringHasSArg(FormatString)) { S.Diag(FormatExpr->getExprLoc(), diag::warn_objc_cdirective_format_string) << "%s" << 1 << 1; S.Diag(FDecl->getLocation(), diag::note_entity_declared_at) << FDecl->getDeclName(); } } d755 1 a755 1 ArrayRef Args, a757 1 llvm::SmallBitVector NonNullArgs; d759 2 a760 15 if (!NonNull->args_size()) { // Easy case: all pointer arguments are nonnull. for (const auto *Arg : Args) if (S.isValidPointerAttrType(Arg->getType())) CheckNonNullArgument(S, Arg, CallSiteLoc); return; } for (unsigned Val : NonNull->args()) { if (Val >= Args.size()) continue; if (NonNullArgs.empty()) NonNullArgs.resize(Args.size()); NonNullArgs.set(Val); } d770 1 a770 1 unsigned ArgIndex = 0; d772 1 a772 1 I != E; ++I, ++ArgIndex) { d774 2 a775 3 if (PVD->hasAttr() || (ArgIndex < NonNullArgs.size() && NonNullArgs[ArgIndex])) CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); a776 5 // In case this is a variadic call, check any remaining arguments. for (/**/; ArgIndex < NonNullArgs.size(); ++ArgIndex) if (NonNullArgs[ArgIndex]) CheckNonNullArgument(S, Args[ArgIndex], CallSiteLoc); d814 1 a814 1 CheckNonNullArguments(*this, FDecl, Args, Loc); d854 1 a854 1 checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumParams, a864 2 if (getLangOpts().ObjC1) DiagnoseCStringFormatDirectiveInCFAPI(*this, FDecl, Args, NumArgs); d913 2 a914 2 checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), d929 2 a930 1 llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), a1120 5 if (IsC11 && ValType->isPointerType() && RequireCompleteType(Ptr->getLocStart(), ValType->getPointeeType(), diag::err_incomplete_type)) { return ExprError(); } a1382 1 BUILTIN_ROW(__sync_fetch_and_nand), a1388 1 BUILTIN_ROW(__sync_nand_and_fetch), a1417 1 bool WarnAboutSemanticsChange = false; a1464 10 case Builtin::BI__sync_fetch_and_nand: case Builtin::BI__sync_fetch_and_nand_1: case Builtin::BI__sync_fetch_and_nand_2: case Builtin::BI__sync_fetch_and_nand_4: case Builtin::BI__sync_fetch_and_nand_8: case Builtin::BI__sync_fetch_and_nand_16: BuiltinIndex = 5; WarnAboutSemanticsChange = true; break; d1471 1 a1471 1 BuiltinIndex = 6; d1480 1 a1480 1 BuiltinIndex = 7; d1489 1 a1489 1 BuiltinIndex = 8; d1498 1 a1498 1 BuiltinIndex = 9; d1507 1 a1507 11 BuiltinIndex = 10; break; case Builtin::BI__sync_nand_and_fetch: case Builtin::BI__sync_nand_and_fetch_1: case Builtin::BI__sync_nand_and_fetch_2: case Builtin::BI__sync_nand_and_fetch_4: case Builtin::BI__sync_nand_and_fetch_8: case Builtin::BI__sync_nand_and_fetch_16: BuiltinIndex = 11; WarnAboutSemanticsChange = true; d1516 1 a1516 1 BuiltinIndex = 12; d1526 1 a1526 1 BuiltinIndex = 13; d1537 1 a1537 1 BuiltinIndex = 14; d1546 1 a1546 1 BuiltinIndex = 15; d1557 1 a1557 1 BuiltinIndex = 16; a1569 5 if (WarnAboutSemanticsChange) { Diag(TheCall->getLocEnd(), diag::warn_sync_fetch_and_nand_semantics_change) << TheCall->getCallee()->getSourceRange(); } d2031 1 a2031 40 << Arg->getSourceRange() << cast(TheCall->getCalleeDecl())->getIdentifier(); return false; } /// Handle __builtin_assume_aligned. This is declared /// as (const void*, size_t, ...) and can take one optional constant int arg. bool Sema::SemaBuiltinAssumeAligned(CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs > 3) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange(); // The alignment must be a constant integer. Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (!Result.isPowerOf2()) return Diag(TheCall->getLocStart(), diag::err_alignment_not_power_of_two) << Arg->getSourceRange(); } if (NumArgs > 2) { ExprResult Arg(TheCall->getArg(2)); InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, Context.getSizeType(), false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(2, Arg.get()); } a3177 55 static std::pair shouldNotPrintDirectly(const ASTContext &Context, QualType IntendedTy, const Expr *E) { // Use a 'while' to peel off layers of typedefs. QualType TyTy = IntendedTy; while (const TypedefType *UserTy = TyTy->getAs()) { StringRef Name = UserTy->getDecl()->getName(); QualType CastTy = llvm::StringSwitch(Name) .Case("NSInteger", Context.LongTy) .Case("NSUInteger", Context.UnsignedLongTy) .Case("SInt32", Context.IntTy) .Case("UInt32", Context.UnsignedIntTy) .Default(QualType()); if (!CastTy.isNull()) return std::make_pair(CastTy, Name); TyTy = UserTy->desugar(); } // Strip parens if necessary. if (const ParenExpr *PE = dyn_cast(E)) return shouldNotPrintDirectly(Context, PE->getSubExpr()->getType(), PE->getSubExpr()); // If this is a conditional expression, then its result type is constructed // via usual arithmetic conversions and thus there might be no necessary // typedef sugar there. Recurse to operands to check for NSInteger & // Co. usage condition. if (const ConditionalOperator *CO = dyn_cast(E)) { QualType TrueTy, FalseTy; StringRef TrueName, FalseName; std::tie(TrueTy, TrueName) = shouldNotPrintDirectly(Context, CO->getTrueExpr()->getType(), CO->getTrueExpr()); std::tie(FalseTy, FalseName) = shouldNotPrintDirectly(Context, CO->getFalseExpr()->getType(), CO->getFalseExpr()); if (TrueTy == FalseTy) return std::make_pair(TrueTy, TrueName); else if (TrueTy.isNull()) return std::make_pair(FalseTy, FalseName); else if (FalseTy.isNull()) return std::make_pair(TrueTy, TrueName); } return std::make_pair(QualType(), StringRef()); } d3269 1 a3269 1 bool ShouldNotPrintDirectly = false; StringRef CastTyName; d3271 17 a3287 5 QualType CastTy; std::tie(CastTy, CastTyName) = shouldNotPrintDirectly(S.Context, IntendedTy, E); if (!CastTy.isNull()) { IntendedTy = CastTy; ShouldNotPrintDirectly = true; d3304 1 a3304 1 if (IntendedTy == ExprTy && !ShouldNotPrintDirectly) { d3358 2 a3359 5 StringRef Name; if (const TypedefType *TypedefTy = dyn_cast(ExprTy)) Name = TypedefTy->getDecl()->getName(); else Name = CastTyName; a3394 1 case Sema::VAK_MSVCUndefined: a3671 14 bool Sema::FormatStringHasSArg(const StringLiteral *FExpr) { // Str - The format string. NOTE: this is NOT null-terminated! StringRef StrRef = FExpr->getString(); const char *Str = StrRef.data(); // Account for cases where the string literal is truncated in a declaration. const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); assert(T && "String literal not of constant array type!"); size_t TypeSize = T->getSize().getZExtValue(); size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); return analyze_format_string::ParseFormatStringHasSArg(Str, Str + StrLen, getLangOpts(), Context.getTargetInfo()); } d4346 1 a4346 2 unsigned NumArgs = Call->getNumArgs(); if ((NumArgs != 3) && (NumArgs != 4)) d4628 1 a4628 1 if (DR->refersToEnclosingVariableOrCapture()) d4795 1 a4795 1 if (DR->refersToEnclosingVariableOrCapture()) d5660 2 a5661 7 // Only analyze comparison operators where both sides have been converted to // the same type. if (!S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType())) return AnalyzeImpConvsInComparison(S, E); // Don't analyze value-dependent comparisons directly. a5931 35 static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { if (S.Diags.isIgnored(diag::warn_impcast_null_pointer_to_integer, E->getExprLoc())) return; // Check for NULL (GNUNull) or nullptr (CXX11_nullptr). const Expr::NullPointerConstantKind NullKind = E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull); if (NullKind != Expr::NPCK_GNUNull && NullKind != Expr::NPCK_CXX11_nullptr) return; // Return if target type is a safe conversion. if (T->isAnyPointerType() || T->isBlockPointerType() || T->isMemberPointerType() || !T->isScalarType() || T->isNullPtrType()) return; SourceLocation Loc = E->getSourceRange().getBegin(); // __null is usually wrapped in a macro. Go up a macro if that is the case. if (NullKind == Expr::NPCK_GNUNull) { if (Loc.isMacroID()) Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; } // Only warn if the null and context location are in the same macro expansion. if (S.SourceMgr.getFileID(Loc) != S.SourceMgr.getFileID(CC)) return; S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) << (NullKind == Expr::NPCK_CXX11_nullptr) << T << clang::SourceRange(CC) << FixItHint::CreateReplacement(Loc, S.getFixItZeroLiteralForType(T, Loc)); } d6074 13 a6086 1 DiagnoseNullConversion(S, E, T, CC); a6221 8 /// CheckBoolLikeConversion - Check conversion of given expression to boolean. /// Input argument E is a logical expression. static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { if (S.getLangOpts().Bool) return; CheckImplicitConversion(S, E->IgnoreParenImpCasts(), S.Context.BoolTy, CC); } a6300 14 if (BO && BO->isLogicalOp()) { Expr *SubExpr = BO->getLHS()->IgnoreParenImpCasts(); if (!IsLogicalAndOperator || !isa(SubExpr)) ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); SubExpr = BO->getRHS()->IgnoreParenImpCasts(); if (!IsLogicalAndOperator || !isa(SubExpr)) ::CheckBoolLikeConversion(S, SubExpr, BO->getExprLoc()); } if (const UnaryOperator *U = dyn_cast(E)) if (U->getOpcode() == UO_LNot) ::CheckBoolLikeConversion(S, U->getSubExpr(), CC); d6420 1 a6420 34 // Check for parameter decl with nonnull attribute if (const ParmVarDecl* PV = dyn_cast(D)) { if (getCurFunction() && !getCurFunction()->ModifiedNonNullParams.count(PV)) if (const FunctionDecl* FD = dyn_cast(PV->getDeclContext())) { unsigned NumArgs = FD->getNumParams(); llvm::SmallBitVector AttrNonNull(NumArgs); for (const auto *NonNull : FD->specific_attrs()) { if (!NonNull->args_size()) { AttrNonNull.set(0, NumArgs); break; } for (unsigned Val : NonNull->args()) { if (Val >= NumArgs) continue; AttrNonNull.set(Val); } } if (!AttrNonNull.empty()) for (unsigned i = 0; i < NumArgs; ++i) if (FD->getParamDecl(i) == PV && (AttrNonNull[i] || PV->hasAttr())) { std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, nullptr, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_nonnull_parameter_compare : diag::warn_cast_nonnull_to_bool; Diag(E->getExprLoc(), DiagID) << S.str() << E->getSourceRange() << Range << IsEqual; return; } } } a6515 6 /// CheckBoolLikeConversion - Check conversion of given expression to boolean. /// Input argument E is a logical expression. void Sema::CheckBoolLikeConversion(Expr *E, SourceLocation CC) { ::CheckBoolLikeConversion(*this, E, CC); } d6519 2 a6520 2 if (isa(E->IgnoreParenCasts())) E->IgnoreParenCasts()->EvaluateForOverflow(Context); d6650 5 a6654 6 for (auto MI = ModAsSideEffect.rbegin(), ME = ModAsSideEffect.rend(); MI != ME; ++MI) { UsageInfo &U = Self.UsageMap[MI->first]; auto &SideEffectUsage = U.Uses[UK_ModAsSideEffect]; Self.addUsage(U, MI->first, SideEffectUsage.Use, UK_ModAsValue); SideEffectUsage = MI->second; a7886 90 //===--- CHECK: Warn on self move with std::move. -------------------------===// /// DiagnoseSelfMove - Emits a warning if a value is moved to itself. void Sema::DiagnoseSelfMove(const Expr *LHSExpr, const Expr *RHSExpr, SourceLocation OpLoc) { if (Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, OpLoc)) return; if (!ActiveTemplateInstantiations.empty()) return; // Strip parens and casts away. LHSExpr = LHSExpr->IgnoreParenImpCasts(); RHSExpr = RHSExpr->IgnoreParenImpCasts(); // Check for a call expression const CallExpr *CE = dyn_cast(RHSExpr); if (!CE || CE->getNumArgs() != 1) return; // Check for a call to std::move const FunctionDecl *FD = CE->getDirectCallee(); if (!FD || !FD->isInStdNamespace() || !FD->getIdentifier() || !FD->getIdentifier()->isStr("move")) return; // Get argument from std::move RHSExpr = CE->getArg(0); const DeclRefExpr *LHSDeclRef = dyn_cast(LHSExpr); const DeclRefExpr *RHSDeclRef = dyn_cast(RHSExpr); // Two DeclRefExpr's, check that the decls are the same. if (LHSDeclRef && RHSDeclRef) { if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) return; if (LHSDeclRef->getDecl()->getCanonicalDecl() != RHSDeclRef->getDecl()->getCanonicalDecl()) return; Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); return; } // Member variables require a different approach to check for self moves. // MemberExpr's are the same if every nested MemberExpr refers to the same // Decl and that the base Expr's are DeclRefExpr's with the same Decl or // the base Expr's are CXXThisExpr's. const Expr *LHSBase = LHSExpr; const Expr *RHSBase = RHSExpr; const MemberExpr *LHSME = dyn_cast(LHSExpr); const MemberExpr *RHSME = dyn_cast(RHSExpr); if (!LHSME || !RHSME) return; while (LHSME && RHSME) { if (LHSME->getMemberDecl()->getCanonicalDecl() != RHSME->getMemberDecl()->getCanonicalDecl()) return; LHSBase = LHSME->getBase(); RHSBase = RHSME->getBase(); LHSME = dyn_cast(LHSBase); RHSME = dyn_cast(RHSBase); } LHSDeclRef = dyn_cast(LHSBase); RHSDeclRef = dyn_cast(RHSBase); if (LHSDeclRef && RHSDeclRef) { if (!LHSDeclRef->getDecl() || !RHSDeclRef->getDecl()) return; if (LHSDeclRef->getDecl()->getCanonicalDecl() != RHSDeclRef->getDecl()->getCanonicalDecl()) return; Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); return; } if (isa(LHSBase) && isa(RHSBase)) Diag(OpLoc, diag::warn_self_move) << LHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); } @ 1.1.1.9 log @Import Clang r232565 post-3.6.0. Various bugfixes, especially for ARM. @ text @a299 4 case Builtin::BI__builtin_setjmp: if (SemaBuiltinSetjmp(TheCall)) return ExprError(); break; d2370 1 a2370 2 /// This checks that the target supports __builtin_longjmp and /// that val is a constant 1. a2371 4 if (!Context.getTargetInfo().hasSjLjLowering()) return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_unsupported) << SourceRange(TheCall->getLocStart(), TheCall->getLocEnd()); a2385 10 /// SemaBuiltinSetjmp - Handle __builtin_setjmp(void *env[5]). /// This checks that the target supports __builtin_setjmp. bool Sema::SemaBuiltinSetjmp(CallExpr *TheCall) { if (!Context.getTargetInfo().hasSjLjLowering()) return Diag(TheCall->getLocStart(), diag::err_builtin_setjmp_unsupported) << SourceRange(TheCall->getLocStart(), TheCall->getLocEnd()); return false; } @ 1.1.1.10 log @Import Clang 3.8.0rc3 r261930. @ text @a23 1 #include "clang/AST/ExprOpenMP.h" a113 33 static bool SemaBuiltinOverflow(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 3)) return true; // First two arguments should be integers. for (unsigned I = 0; I < 2; ++I) { Expr *Arg = TheCall->getArg(I); QualType Ty = Arg->getType(); if (!Ty->isIntegerType()) { S.Diag(Arg->getLocStart(), diag::err_overflow_builtin_must_be_int) << Ty << Arg->getSourceRange(); return true; } } // Third argument should be a pointer to a non-const integer. // IRGen correctly handles volatile, restrict, and address spaces, and // the other qualifiers aren't possible. { Expr *Arg = TheCall->getArg(2); QualType Ty = Arg->getType(); const auto *PtrTy = Ty->getAs(); if (!(PtrTy && PtrTy->getPointeeType()->isIntegerType() && !PtrTy->getPointeeType().isConstQualified())) { S.Diag(Arg->getLocStart(), diag::err_overflow_builtin_must_be_ptr_int) << Ty << Arg->getSourceRange(); return true; } } return false; } d187 1 a187 1 QualType ReturnTy = CE->getCallReturnType(S.Context); a204 22 static bool SemaBuiltinSEHScopeCheck(Sema &SemaRef, CallExpr *TheCall, Scope::ScopeFlags NeededScopeFlags, unsigned DiagID) { // Scopes aren't available during instantiation. Fortunately, builtin // functions cannot be template args so they cannot be formed through template // instantiation. Therefore checking once during the parse is sufficient. if (!SemaRef.ActiveTemplateInstantiations.empty()) return false; Scope *S = SemaRef.getCurScope(); while (S && !S->isSEHExceptScope()) S = S->getParent(); if (!S || !(S->getFlags() & NeededScopeFlags)) { auto *DRE = cast(TheCall->getCallee()->IgnoreParenCasts()); SemaRef.Diag(TheCall->getExprLoc(), DiagID) << DRE->getDecl()->getIdentifier(); return true; } return false; } a303 5 case Builtin::BI_setjmp: case Builtin::BI_setjmpex: if (checkArgCount(*this, TheCall, 1)) return true; break; a415 3 case Builtin::BI__builtin_nontemporal_load: case Builtin::BI__builtin_nontemporal_store: return SemaBuiltinNontemporalOverloaded(TheCallResult); a428 6 case Builtin::BI__builtin_add_overflow: case Builtin::BI__builtin_sub_overflow: case Builtin::BI__builtin_mul_overflow: if (SemaBuiltinOverflow(*this, TheCall)) return ExprError(); break; a467 29 case Builtin::BI__exception_code: case Builtin::BI_exception_code: { if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHExceptScope, diag::err_seh___except_block)) return ExprError(); break; } case Builtin::BI__exception_info: case Builtin::BI_exception_info: { if (SemaBuiltinSEHScopeCheck(*this, TheCall, Scope::SEHFilterScope, diag::err_seh___except_filter)) return ExprError(); break; } case Builtin::BI__GetExceptionInfo: if (checkArgCount(*this, TheCall, 1)) return ExprError(); if (CheckCXXThrowOperand( TheCall->getLocStart(), Context.getExceptionObjectType(FDecl->getParamDecl(0)->getType()), TheCall)) return ExprError(); TheCall->setType(Context.VoidPtrTy); break; d472 1 a472 1 if (Context.BuiltinInfo.isTSBuiltin(BuiltinID)) { a492 4 case llvm::Triple::systemz: if (CheckSystemZBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; a497 6 case llvm::Triple::ppc: case llvm::Triple::ppc64: case llvm::Triple::ppc64le: if (CheckPPCBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; d560 1 a560 4 if (IsInt64Long) return Context.UnsignedLongTy; else return Context.UnsignedLongLongTy; a769 10 if (BuiltinID == ARM::BI__builtin_arm_rsr64 || BuiltinID == ARM::BI__builtin_arm_wsr64) return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 3, false); if (BuiltinID == ARM::BI__builtin_arm_rsr || BuiltinID == ARM::BI__builtin_arm_rsrp || BuiltinID == ARM::BI__builtin_arm_wsr || BuiltinID == ARM::BI__builtin_arm_wsrp) return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); a809 10 if (BuiltinID == AArch64::BI__builtin_arm_rsr64 || BuiltinID == AArch64::BI__builtin_arm_wsr64) return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, false); if (BuiltinID == AArch64::BI__builtin_arm_rsr || BuiltinID == AArch64::BI__builtin_arm_rsrp || BuiltinID == AArch64::BI__builtin_arm_wsr || BuiltinID == AArch64::BI__builtin_arm_wsrp) return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); a841 119 bool Sema::CheckPPCBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { unsigned i = 0, l = 0, u = 0; bool Is64BitBltin = BuiltinID == PPC::BI__builtin_divde || BuiltinID == PPC::BI__builtin_divdeu || BuiltinID == PPC::BI__builtin_bpermd; bool IsTarget64Bit = Context.getTargetInfo() .getTypeWidth(Context .getTargetInfo() .getIntPtrType()) == 64; bool IsBltinExtDiv = BuiltinID == PPC::BI__builtin_divwe || BuiltinID == PPC::BI__builtin_divweu || BuiltinID == PPC::BI__builtin_divde || BuiltinID == PPC::BI__builtin_divdeu; if (Is64BitBltin && !IsTarget64Bit) return Diag(TheCall->getLocStart(), diag::err_64_bit_builtin_32_bit_tgt) << TheCall->getSourceRange(); if ((IsBltinExtDiv && !Context.getTargetInfo().hasFeature("extdiv")) || (BuiltinID == PPC::BI__builtin_bpermd && !Context.getTargetInfo().hasFeature("bpermd"))) return Diag(TheCall->getLocStart(), diag::err_ppc_builtin_only_on_pwr7) << TheCall->getSourceRange(); switch (BuiltinID) { default: return false; case PPC::BI__builtin_altivec_crypto_vshasigmaw: case PPC::BI__builtin_altivec_crypto_vshasigmad: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); case PPC::BI__builtin_tbegin: case PPC::BI__builtin_tend: i = 0; l = 0; u = 1; break; case PPC::BI__builtin_tsr: i = 0; l = 0; u = 7; break; case PPC::BI__builtin_tabortwc: case PPC::BI__builtin_tabortdc: i = 0; l = 0; u = 31; break; case PPC::BI__builtin_tabortwci: case PPC::BI__builtin_tabortdci: return SemaBuiltinConstantArgRange(TheCall, 0, 0, 31) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 31); } return SemaBuiltinConstantArgRange(TheCall, i, l, u); } bool Sema::CheckSystemZBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (BuiltinID == SystemZ::BI__builtin_tabort) { Expr *Arg = TheCall->getArg(0); llvm::APSInt AbortCode(32); if (Arg->isIntegerConstantExpr(AbortCode, Context) && AbortCode.getSExtValue() >= 0 && AbortCode.getSExtValue() < 256) return Diag(Arg->getLocStart(), diag::err_systemz_invalid_tabort_code) << Arg->getSourceRange(); } // For intrinsics which take an immediate value as part of the instruction, // range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case SystemZ::BI__builtin_s390_lcbb: i = 1; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_verimb: case SystemZ::BI__builtin_s390_verimh: case SystemZ::BI__builtin_s390_verimf: case SystemZ::BI__builtin_s390_verimg: i = 3; l = 0; u = 255; break; case SystemZ::BI__builtin_s390_vfaeb: case SystemZ::BI__builtin_s390_vfaeh: case SystemZ::BI__builtin_s390_vfaef: case SystemZ::BI__builtin_s390_vfaebs: case SystemZ::BI__builtin_s390_vfaehs: case SystemZ::BI__builtin_s390_vfaefs: case SystemZ::BI__builtin_s390_vfaezb: case SystemZ::BI__builtin_s390_vfaezh: case SystemZ::BI__builtin_s390_vfaezf: case SystemZ::BI__builtin_s390_vfaezbs: case SystemZ::BI__builtin_s390_vfaezhs: case SystemZ::BI__builtin_s390_vfaezfs: i = 2; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_vfidb: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15) || SemaBuiltinConstantArgRange(TheCall, 2, 0, 15); case SystemZ::BI__builtin_s390_vftcidb: i = 1; l = 0; u = 4095; break; case SystemZ::BI__builtin_s390_vlbb: i = 1; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_vpdi: i = 2; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_vsldb: i = 2; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_vstrcb: case SystemZ::BI__builtin_s390_vstrch: case SystemZ::BI__builtin_s390_vstrcf: case SystemZ::BI__builtin_s390_vstrczb: case SystemZ::BI__builtin_s390_vstrczh: case SystemZ::BI__builtin_s390_vstrczf: case SystemZ::BI__builtin_s390_vstrcbs: case SystemZ::BI__builtin_s390_vstrchs: case SystemZ::BI__builtin_s390_vstrcfs: case SystemZ::BI__builtin_s390_vstrczbs: case SystemZ::BI__builtin_s390_vstrczhs: case SystemZ::BI__builtin_s390_vstrczfs: i = 3; l = 0; u = 15; break; } return SemaBuiltinConstantArgRange(TheCall, i, l, u); } /// SemaBuiltinCpuSupports - Handle __builtin_cpu_supports(char *). /// This checks that the target supports __builtin_cpu_supports and /// that the string argument is constant and valid. static bool SemaBuiltinCpuSupports(Sema &S, CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); // Check if the argument is a string literal. if (!isa(Arg->IgnoreParenImpCasts())) return S.Diag(TheCall->getLocStart(), diag::err_expr_not_string_literal) << Arg->getSourceRange(); // Check the contents of the string. StringRef Feature = cast(Arg->IgnoreParenImpCasts())->getString(); if (!S.Context.getTargetInfo().validateCpuSupports(Feature)) return S.Diag(TheCall->getLocStart(), diag::err_invalid_cpu_supports) << Arg->getSourceRange(); return false; } a845 4 case X86::BI__builtin_cpu_supports: return SemaBuiltinCpuSupports(*this, TheCall); case X86::BI__builtin_ms_va_start: return SemaBuiltinMSVAStart(TheCall); a846 35 case X86::BI__builtin_ia32_sha1rnds4: i = 2, l = 0; u = 3; break; case X86::BI__builtin_ia32_vpermil2pd: case X86::BI__builtin_ia32_vpermil2pd256: case X86::BI__builtin_ia32_vpermil2ps: case X86::BI__builtin_ia32_vpermil2ps256: i = 3, l = 0; u = 3; break; case X86::BI__builtin_ia32_cmpb128_mask: case X86::BI__builtin_ia32_cmpw128_mask: case X86::BI__builtin_ia32_cmpd128_mask: case X86::BI__builtin_ia32_cmpq128_mask: case X86::BI__builtin_ia32_cmpb256_mask: case X86::BI__builtin_ia32_cmpw256_mask: case X86::BI__builtin_ia32_cmpd256_mask: case X86::BI__builtin_ia32_cmpq256_mask: case X86::BI__builtin_ia32_cmpb512_mask: case X86::BI__builtin_ia32_cmpw512_mask: case X86::BI__builtin_ia32_cmpd512_mask: case X86::BI__builtin_ia32_cmpq512_mask: case X86::BI__builtin_ia32_ucmpb128_mask: case X86::BI__builtin_ia32_ucmpw128_mask: case X86::BI__builtin_ia32_ucmpd128_mask: case X86::BI__builtin_ia32_ucmpq128_mask: case X86::BI__builtin_ia32_ucmpb256_mask: case X86::BI__builtin_ia32_ucmpw256_mask: case X86::BI__builtin_ia32_ucmpd256_mask: case X86::BI__builtin_ia32_ucmpq256_mask: case X86::BI__builtin_ia32_ucmpb512_mask: case X86::BI__builtin_ia32_ucmpw512_mask: case X86::BI__builtin_ia32_ucmpd512_mask: case X86::BI__builtin_ia32_ucmpq512_mask: i = 2; l = 0; u = 7; break; case X86::BI__builtin_ia32_roundps: case X86::BI__builtin_ia32_roundpd: case X86::BI__builtin_ia32_roundps256: case X86::BI__builtin_ia32_roundpd256: i = 1, l = 0; u = 15; break; case X86::BI__builtin_ia32_roundss: case X86::BI__builtin_ia32_roundsd: i = 2, l = 0; u = 15; break; d850 1 a850 13 case X86::BI__builtin_ia32_cmpsd: case X86::BI__builtin_ia32_cmpps256: case X86::BI__builtin_ia32_cmppd256: case X86::BI__builtin_ia32_cmpps512_mask: case X86::BI__builtin_ia32_cmppd512_mask: i = 2; l = 0; u = 31; break; case X86::BI__builtin_ia32_vpcomub: case X86::BI__builtin_ia32_vpcomuw: case X86::BI__builtin_ia32_vpcomud: case X86::BI__builtin_ia32_vpcomuq: case X86::BI__builtin_ia32_vpcomb: case X86::BI__builtin_ia32_vpcomw: case X86::BI__builtin_ia32_vpcomd: case X86::BI__builtin_ia32_vpcomq: i = 2; l = 0; u = 7; break; d881 2 a882 8 static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { // If the expression has non-null type, it doesn't evaluate to null. if (auto nullability = Expr->IgnoreImplicit()->getType()->getNullability(S.Context)) { if (*nullability == NullabilityKind::NonNull) return false; } d904 1 a904 2 S.DiagRuntimeBehavior(CallSiteLoc, ArgExpr, S.PDiag(diag::warn_null_arg) << ArgExpr->getSourceRange()); a957 8 /// Determine whether the given type has a non-null nullability annotation. static bool isNonNullType(ASTContext &ctx, QualType type) { if (auto nullability = type->getNullability(ctx)) return *nullability == NullabilityKind::NonNull; return false; } a959 1 const FunctionProtoType *Proto, a961 2 assert((FDecl || Proto) && "Need a function declaration or prototype"); d964 8 a971 10 if (FDecl) { // Handle the nonnull attribute on the function/method declaration itself. for (const auto *NonNull : FDecl->specific_attrs()) { if (!NonNull->args_size()) { // Easy case: all pointer arguments are nonnull. for (const auto *Arg : Args) if (S.isValidPointerAttrType(Arg->getType())) CheckNonNullArgument(S, Arg, CallSiteLoc); return; } d973 6 a978 7 for (unsigned Val : NonNull->args()) { if (Val >= Args.size()) continue; if (NonNullArgs.empty()) NonNullArgs.resize(Args.size()); NonNullArgs.set(Val); } d982 14 a995 53 if (FDecl && (isa(FDecl) || isa(FDecl))) { // Handle the nonnull attribute on the parameters of the // function/method. ArrayRef parms; if (const FunctionDecl *FD = dyn_cast(FDecl)) parms = FD->parameters(); else parms = cast(FDecl)->parameters(); unsigned ParamIndex = 0; for (ArrayRef::iterator I = parms.begin(), E = parms.end(); I != E; ++I, ++ParamIndex) { const ParmVarDecl *PVD = *I; if (PVD->hasAttr() || isNonNullType(S.Context, PVD->getType())) { if (NonNullArgs.empty()) NonNullArgs.resize(Args.size()); NonNullArgs.set(ParamIndex); } } } else { // If we have a non-function, non-method declaration but no // function prototype, try to dig out the function prototype. if (!Proto) { if (const ValueDecl *VD = dyn_cast(FDecl)) { QualType type = VD->getType().getNonReferenceType(); if (auto pointerType = type->getAs()) type = pointerType->getPointeeType(); else if (auto blockType = type->getAs()) type = blockType->getPointeeType(); // FIXME: data member pointers? // Dig out the function prototype, if there is one. Proto = type->getAs(); } } // Fill in non-null argument information from the nullability // information on the parameter types (if we have them). if (Proto) { unsigned Index = 0; for (auto paramType : Proto->getParamTypes()) { if (isNonNullType(S.Context, paramType)) { if (NonNullArgs.empty()) NonNullArgs.resize(Args.size()); NonNullArgs.set(Index); } ++Index; } } d998 2 a999 3 // Check for non-null arguments. for (unsigned ArgIndex = 0, ArgIndexEnd = NonNullArgs.size(); ArgIndex != ArgIndexEnd; ++ArgIndex) { a1001 1 } d1006 2 a1007 2 void Sema::checkCall(NamedDecl *FDecl, const FunctionProtoType *Proto, ArrayRef Args, bool IsMemberFunction, a1028 7 unsigned NumParams = Proto ? Proto->getNumParams() : FDecl && isa(FDecl) ? cast(FDecl)->getNumParams() : FDecl && isa(FDecl) ? cast(FDecl)->param_size() : 0; d1038 2 a1039 2 if (FDecl || Proto) { CheckNonNullArguments(*this, FDecl, Proto, Args, Loc); d1042 2 a1043 4 if (FDecl) { for (const auto *I : FDecl->specific_attrs()) CheckArgumentWithTypeTag(I, Args.data()); } d1055 2 a1056 2 checkCall(FDecl, Proto, Args, /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); d1069 1 d1079 1 a1079 1 checkCall(FDecl, Proto, llvm::makeArrayRef(Args, NumArgs), d1113 3 a1115 3 checkCall(Method, nullptr, Args, /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), CallType); d1122 2 a1123 6 QualType Ty; if (const auto *V = dyn_cast(NDecl)) Ty = V->getType().getNonReferenceType(); else if (const auto *F = dyn_cast(NDecl)) Ty = F->getType().getNonReferenceType(); else d1126 2 a1127 2 if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType() && !Ty->isFunctionProtoType()) d1138 1 d1140 3 a1142 3 checkCall(NDecl, Proto, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), /*IsMemberFunction=*/false, TheCall->getRParenLoc(), d1153 3 a1155 1 checkCall(/*FDecl=*/nullptr, Proto, d1157 1 a1157 1 /*IsMemberFunction=*/false, TheCall->getRParenLoc(), d1223 3 a1225 4 static_assert(AtomicExpr::AO__c11_atomic_init == 0 && AtomicExpr::AO__c11_atomic_fetch_xor + 1 == AtomicExpr::AO__atomic_load, "need to update code for modified C11 atomics"); a1331 6 } else if (Form != Load && Op != AtomicExpr::AO__atomic_load) { if (ValType.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_non_const_pointer) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } d1369 3 a1387 4 // atomic_fetch_or takes a pointer to a volatile 'A'. We shouldn't let the // volatile-ness of the pointee-type inject itself into the result or the // other operands. ValType.removeLocalVolatile(); a1399 4 // FIXME: __atomic_load allows the first argument to be a a pointer to const // but not the second argument. We need to manually remove possible const // qualifiers. d1419 2 a1420 11 else { Expr *ValArg = TheCall->getArg(i); unsigned AS = 0; // Keep address space of non-atomic pointer type. if (const PointerType *PtrTy = ValArg->getType()->getAs()) { AS = PtrTy->getPointeeType().getAddressSpace(); } Ty = Context.getPointerType( Context.getAddrSpaceQualType(ValType.getUnqualifiedType(), AS)); } d1832 1 a1832 1 const char *NewBuiltinName = Context.BuiltinInfo.getName(NewBuiltinID); a1898 72 /// SemaBuiltinNontemporalOverloaded - We have a call to /// __builtin_nontemporal_store or __builtin_nontemporal_load, which is an /// overloaded function based on the pointer type of its last argument. /// /// This function goes through and does final semantic checking for these /// builtins. ExprResult Sema::SemaBuiltinNontemporalOverloaded(ExprResult TheCallResult) { CallExpr *TheCall = (CallExpr *)TheCallResult.get(); DeclRefExpr *DRE = cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); unsigned BuiltinID = FDecl->getBuiltinID(); assert((BuiltinID == Builtin::BI__builtin_nontemporal_store || BuiltinID == Builtin::BI__builtin_nontemporal_load) && "Unexpected nontemporal load/store builtin!"); bool isStore = BuiltinID == Builtin::BI__builtin_nontemporal_store; unsigned numArgs = isStore ? 2 : 1; // Ensure that we have the proper number of arguments. if (checkArgCount(*this, TheCall, numArgs)) return ExprError(); // Inspect the last argument of the nontemporal builtin. This should always // be a pointer type, from which we imply the type of the memory access. // Because it is a pointer type, we don't have to worry about any implicit // casts here. Expr *PointerArg = TheCall->getArg(numArgs - 1); ExprResult PointerArgResult = DefaultFunctionArrayLvalueConversion(PointerArg); if (PointerArgResult.isInvalid()) return ExprError(); PointerArg = PointerArgResult.get(); TheCall->setArg(numArgs - 1, PointerArg); const PointerType *pointerType = PointerArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_nontemporal_builtin_must_be_pointer) << PointerArg->getType() << PointerArg->getSourceRange(); return ExprError(); } QualType ValType = pointerType->getPointeeType(); // Strip any qualifiers off ValType. ValType = ValType.getUnqualifiedType(); if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType() && !ValType->isFloatingType() && !ValType->isVectorType()) { Diag(DRE->getLocStart(), diag::err_nontemporal_builtin_must_be_pointer_intfltptr_or_vector) << PointerArg->getType() << PointerArg->getSourceRange(); return ExprError(); } if (!isStore) { TheCall->setType(ValType); return TheCallResult; } ExprResult ValArg = TheCall->getArg(0); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, ValType, /*consume*/ false); ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); if (ValArg.isInvalid()) return ExprError(); TheCall->setArg(0, ValArg.get()); TheCall->setType(Context.VoidTy); return TheCallResult; } d1931 3 a1933 4 /// Check the arguments to '__builtin_va_start' or '__builtin_ms_va_start' /// for validity. Emit an error and return true on failure; return false /// on success. bool Sema::SemaBuiltinVAStartImpl(CallExpr *TheCall) { a2010 42 /// Check the arguments to '__builtin_va_start' for validity, and that /// it was called from a function of the native ABI. /// Emit an error and return true on failure; return false on success. bool Sema::SemaBuiltinVAStart(CallExpr *TheCall) { // On x86-64 Unix, don't allow this in Win64 ABI functions. // On x64 Windows, don't allow this in System V ABI functions. // (Yes, that means there's no corresponding way to support variadic // System V ABI functions on Windows.) if (Context.getTargetInfo().getTriple().getArch() == llvm::Triple::x86_64) { unsigned OS = Context.getTargetInfo().getTriple().getOS(); clang::CallingConv CC = CC_C; if (const FunctionDecl *FD = getCurFunctionDecl()) CC = FD->getType()->getAs()->getCallConv(); if ((OS == llvm::Triple::Win32 && CC == CC_X86_64SysV) || (OS != llvm::Triple::Win32 && CC == CC_X86_64Win64)) return Diag(TheCall->getCallee()->getLocStart(), diag::err_va_start_used_in_wrong_abi_function) << (OS != llvm::Triple::Win32); } return SemaBuiltinVAStartImpl(TheCall); } /// Check the arguments to '__builtin_ms_va_start' for validity, and that /// it was called from a Win64 ABI function. /// Emit an error and return true on failure; return false on success. bool Sema::SemaBuiltinMSVAStart(CallExpr *TheCall) { // This only makes sense for x86-64. const llvm::Triple &TT = Context.getTargetInfo().getTriple(); Expr *Callee = TheCall->getCallee(); if (TT.getArch() != llvm::Triple::x86_64) return Diag(Callee->getLocStart(), diag::err_x86_builtin_32_bit_tgt); // Don't allow this in System V ABI functions. clang::CallingConv CC = CC_C; if (const FunctionDecl *FD = getCurFunctionDecl()) CC = FD->getType()->getAs()->getCallConv(); if (CC == CC_X86_64SysV || (TT.getOS() != llvm::Triple::Win32 && CC != CC_X86_64Win64)) return Diag(Callee->getLocStart(), diag::err_ms_va_start_used_in_sysv_function); return SemaBuiltinVAStartImpl(TheCall); } d2042 1 a2042 1 const struct { d2289 1 a2289 1 Diag(Arg->getLocStart(), diag::warn_assume_side_effects) a2372 101 /// SemaBuiltinARMSpecialReg - Handle a check if argument ArgNum of CallExpr /// TheCall is an ARM/AArch64 special register string literal. bool Sema::SemaBuiltinARMSpecialReg(unsigned BuiltinID, CallExpr *TheCall, int ArgNum, unsigned ExpectedFieldNum, bool AllowName) { bool IsARMBuiltin = BuiltinID == ARM::BI__builtin_arm_rsr64 || BuiltinID == ARM::BI__builtin_arm_wsr64 || BuiltinID == ARM::BI__builtin_arm_rsr || BuiltinID == ARM::BI__builtin_arm_rsrp || BuiltinID == ARM::BI__builtin_arm_wsr || BuiltinID == ARM::BI__builtin_arm_wsrp; bool IsAArch64Builtin = BuiltinID == AArch64::BI__builtin_arm_rsr64 || BuiltinID == AArch64::BI__builtin_arm_wsr64 || BuiltinID == AArch64::BI__builtin_arm_rsr || BuiltinID == AArch64::BI__builtin_arm_rsrp || BuiltinID == AArch64::BI__builtin_arm_wsr || BuiltinID == AArch64::BI__builtin_arm_wsrp; assert((IsARMBuiltin || IsAArch64Builtin) && "Unexpected ARM builtin."); // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check if the argument is a string literal. if (!isa(Arg->IgnoreParenImpCasts())) return Diag(TheCall->getLocStart(), diag::err_expr_not_string_literal) << Arg->getSourceRange(); // Check the type of special register given. StringRef Reg = cast(Arg->IgnoreParenImpCasts())->getString(); SmallVector Fields; Reg.split(Fields, ":"); if (Fields.size() != ExpectedFieldNum && !(AllowName && Fields.size() == 1)) return Diag(TheCall->getLocStart(), diag::err_arm_invalid_specialreg) << Arg->getSourceRange(); // If the string is the name of a register then we cannot check that it is // valid here but if the string is of one the forms described in ACLE then we // can check that the supplied fields are integers and within the valid // ranges. if (Fields.size() > 1) { bool FiveFields = Fields.size() == 5; bool ValidString = true; if (IsARMBuiltin) { ValidString &= Fields[0].startswith_lower("cp") || Fields[0].startswith_lower("p"); if (ValidString) Fields[0] = Fields[0].drop_front(Fields[0].startswith_lower("cp") ? 2 : 1); ValidString &= Fields[2].startswith_lower("c"); if (ValidString) Fields[2] = Fields[2].drop_front(1); if (FiveFields) { ValidString &= Fields[3].startswith_lower("c"); if (ValidString) Fields[3] = Fields[3].drop_front(1); } } SmallVector Ranges; if (FiveFields) Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 7, 15, 15}); else Ranges.append({15, 7, 15}); for (unsigned i=0; i= 0 && IntField <= Ranges[i]); } if (!ValidString) return Diag(TheCall->getLocStart(), diag::err_arm_invalid_specialreg) << Arg->getSourceRange(); } else if (IsAArch64Builtin && Fields.size() == 1) { // If the register name is one of those that appear in the condition below // and the special register builtin being used is one of the write builtins, // then we require that the argument provided for writing to the register // is an integer constant expression. This is because it will be lowered to // an MSR (immediate) instruction, so we need to know the immediate at // compile time. if (TheCall->getNumArgs() != 2) return false; std::string RegLower = Reg.lower(); if (RegLower != "spsel" && RegLower != "daifset" && RegLower != "daifclr" && RegLower != "pan" && RegLower != "uao") return false; return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); } return false; } a2605 2 .Case("freebsd_kprintf", FST_FreeBSDKPrintf) .Case("os_trace", FST_OSTrace) d3076 4 a3079 1 D << FixIt; d3089 4 a3092 1 Note << FixIt; d3145 2 a3146 12 void HandleEmptyObjCModifierFlag(const char *startFlag, unsigned flagLen) override; void HandleInvalidObjCModifierFlag(const char *startFlag, unsigned flagLen) override; void HandleObjCFlagsWithNonObjCConversion(const char *flagsStart, const char *flagsEnd, const char *conversionPosition) override; }; a3265 35 // void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, // bool IsStringLocation, Range StringRange, // ArrayRef Fixit = None); void CheckPrintfHandler::HandleEmptyObjCModifierFlag(const char *startFlag, unsigned flagLen) { // Warn about an empty flag. EmitFormatDiagnostic(S.PDiag(diag::warn_printf_empty_objc_flag), getLocationOfByte(startFlag), /*IsStringLocation*/true, getSpecifierRange(startFlag, flagLen)); } void CheckPrintfHandler::HandleInvalidObjCModifierFlag(const char *startFlag, unsigned flagLen) { // Warn about an invalid flag. auto Range = getSpecifierRange(startFlag, flagLen); StringRef flag(startFlag, flagLen); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_invalid_objc_flag) << flag, getLocationOfByte(startFlag), /*IsStringLocation*/true, Range, FixItHint::CreateRemoval(Range)); } void CheckPrintfHandler::HandleObjCFlagsWithNonObjCConversion( const char *flagsStart, const char *flagsEnd, const char *conversionPosition) { // Warn about using '[...]' without a '@@' conversion. auto Range = getSpecifierRange(flagsStart, flagsEnd - flagsStart + 1); auto diag = diag::warn_printf_ObjCflags_without_ObjCConversion; EmitFormatDiagnostic(S.PDiag(diag) << StringRef(conversionPosition, 1), getLocationOfByte(conversionPosition), /*IsStringLocation*/true, Range, FixItHint::CreateRemoval(Range)); } a3386 37 // FreeBSD kernel extensions. if (CS.getKind() == ConversionSpecifier::FreeBSDbArg || CS.getKind() == ConversionSpecifier::FreeBSDDArg) { // We need at least two arguments. if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex + 1)) return false; // Claim the second argument. CoveredArgs.set(argIndex + 1); // Type check the first argument (int for %b, pointer for %D) const Expr *Ex = getDataArg(argIndex); const analyze_printf::ArgType &AT = (CS.getKind() == ConversionSpecifier::FreeBSDbArg) ? ArgType(S.Context.IntTy) : ArgType::CPointerTy; if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen)); // Type check the second argument (char * for both %b and %D) Ex = getDataArg(argIndex + 1); const analyze_printf::ArgType &AT2 = ArgType::CStrTy; if (AT2.isValid() && !AT2.matchesType(S.Context, Ex->getType())) EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT2.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen)); return true; } d3565 1 a3565 3 analyze_printf::ArgType::MatchKind match = AT.matchesType(S.Context, ExprTy); if (match == analyze_printf::ArgType::Match) { a3566 1 } a3660 4 unsigned diag = diag::warn_format_conversion_argument_type_mismatch; if (match == analyze_format_string::ArgType::NoMatchPedantic) { diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; } d3663 8 a3670 6 EmitFormatDiagnostic(S.PDiag(diag) << AT.getRepresentativeTypeName(S.Context) << IntendedTy << IsEnum << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/ false, SpecRange, FixItHint::CreateReplacement(SpecRange, os.str())); d3744 1 a3744 6 case Sema::VAK_ValidInCXX11: { unsigned diag = diag::warn_format_conversion_argument_type_mismatch; if (match == analyze_printf::ArgType::NoMatchPedantic) { diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; } d3746 5 a3750 3 S.PDiag(diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/ false, CSR); d3752 1 a3752 1 } d3884 1 a3884 1 d3890 1 a3890 1 d3899 1 a3899 1 d3916 1 a3916 1 d3919 1 a3919 1 d3926 11 d3938 4 a3941 28 if (!AT.isValid()) { return true; } analyze_format_string::ArgType::MatchKind match = AT.matchesType(S.Context, Ex->getType()); if (match == analyze_format_string::ArgType::Match) { return true; } ScanfSpecifier fixedFS = FS; bool success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), S.getLangOpts(), S.Context); unsigned diag = diag::warn_format_conversion_argument_type_mismatch; if (match == analyze_format_string::ArgType::NoMatchPedantic) { diag = diag::warn_format_conversion_argument_type_mismatch_pedantic; } if (success) { // Get the fix string from the fixed format specifier. SmallString<128> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); EmitFormatDiagnostic( S.PDiag(diag) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), d3943 1 a3943 1 /*IsStringLocation*/ false, d3946 11 a3956 8 getSpecifierRange(startSpecifier, specifierLen), os.str())); } else { EmitFormatDiagnostic(S.PDiag(diag) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); d4010 1 a4010 2 if (Type == FST_Printf || Type == FST_NSString || Type == FST_FreeBSDKPrintf || Type == FST_OSTrace) { d4012 1 a4012 1 numDataArgs, (Type == FST_NSString || Type == FST_OSTrace), d4018 1 a4018 2 Context.getTargetInfo(), Type == FST_FreeBSDKPrintf)) d4304 1 a4304 1 FunctionName = S.Context.BuiltinInfo.getName(AbsKind); d4380 1 a4380 1 IsStdAbs ? "std::abs" : Context.BuiltinInfo.getName(AbsKind); a4387 13 // Taking the absolute value of a pointer is very suspicious, they probably // wanted to index into an array, dereference a pointer, call a function, etc. if (ArgType->isPointerType() || ArgType->canDecayToPointerType()) { unsigned DiagType = 0; if (ArgType->isFunctionType()) DiagType = 1; else if (ArgType->isArrayType()) DiagType = 2; Diag(Call->getExprLoc(), diag::warn_pointer_abs) << DiagType << ArgType; return; } d4496 1 a4496 1 static const Expr *getSizeOfExprArg(const Expr *E) { d4506 1 a4506 1 static QualType getSizeOfArgType(const Expr *E) { a4551 1 QualType PointeeTy; d4553 1 a4553 1 PointeeTy = DestPtrTy->getPointeeType(); a4632 3 } else if (DestTy->isArrayType()) { PointeeTy = DestTy; } d4634 32 a4665 2 if (PointeeTy == QualType()) continue; a4666 17 // Always complain about dynamic classes. bool IsContained; if (const CXXRecordDecl *ContainedRD = getContainedDynamicClass(PointeeTy, IsContained)) { unsigned OperationType = 0; // "overwritten" if we're warning about the destination for any call // but memcmp; otherwise a verb appropriate to the call. if (ArgIdx != 0 || BId == Builtin::BImemcmp) { if (BId == Builtin::BImemcpy) OperationType = 1; else if(BId == Builtin::BImemmove) OperationType = 2; else if (BId == Builtin::BImemcmp) OperationType = 3; } d4669 4 a4672 19 PDiag(diag::warn_dyn_class_memaccess) << (BId == Builtin::BImemcmp ? ArgIdx + 2 : ArgIdx) << FnName << IsContained << ContainedRD << OperationType << Call->getCallee()->getSourceRange()); } else if (PointeeTy.hasNonTrivialObjCLifetime() && BId != Builtin::BImemset) DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_arc_object_memaccess) << ArgIdx << FnName << PointeeTy << Call->getCallee()->getSourceRange()); else continue; DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::note_bad_memaccess_silence) << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); break; a4673 1 d4929 2 a4930 1 S.Diag(diagLoc, diag::warn_ret_stack_addr_ref) << lhsType->isReferenceType() d4937 3 a4939 2 S.Diag(diagLoc, diag::warn_ret_local_temp_addr_ref) << lhsType->isReferenceType() << diagRange; a5213 5 case Stmt::OMPArraySectionExprClass: { return EvalAddr(cast(E)->getBase(), refVars, ParentDecl); } d5279 1 a5279 2 if (((Attrs && hasSpecificAttr(*Attrs)) || (!isObjCMethod && isNonNullType(Context, lhsType))) && d5514 1 a5514 2 bool isIntegerCast = CE->getCastKind() == CK_IntegralCast || CE->getCastKind() == CK_BooleanToSignedIntegral; d5824 1 a5824 1 if (const auto *AT = OtherT->getAs()) d6254 1 a6254 1 PrettyTargetValue = Value.isZero() ? "false" : "true"; a6317 4 // Don't warn on functions which have return type nullptr_t. if (isa(E)) return; d6333 2 a6334 6 if (Loc.isMacroID()) { StringRef MacroName = Lexer::getImmediateMacroName(Loc, S.SourceMgr, S.getLangOpts()); if (MacroName == "NULL") Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; } a6346 95 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); /// Check a single element within a collection literal against the /// target element type. static void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { // Skip a bitcast to 'id' or qualified 'id'. if (auto ICE = dyn_cast(Element)) { if (ICE->getCastKind() == CK_BitCast && ICE->getSubExpr()->getType()->getAs()) Element = ICE->getSubExpr(); } QualType ElementType = Element->getType(); ExprResult ElementResult(Element); if (ElementType->getAs() && S.CheckSingleAssignmentConstraints(TargetElementType, ElementResult, false, false) != Sema::Compatible) { S.Diag(Element->getLocStart(), diag::warn_objc_collection_literal_element) << ElementType << ElementKind << TargetElementType << Element->getSourceRange(); } if (auto ArrayLiteral = dyn_cast(Element)) checkObjCArrayLiteral(S, TargetElementType, ArrayLiteral); else if (auto DictionaryLiteral = dyn_cast(Element)) checkObjCDictionaryLiteral(S, TargetElementType, DictionaryLiteral); } /// Check an Objective-C array literal being converted to the given /// target type. static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { if (!S.NSArrayDecl) return; const auto *TargetObjCPtr = TargetType->getAs(); if (!TargetObjCPtr) return; if (TargetObjCPtr->isUnspecialized() || TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() != S.NSArrayDecl->getCanonicalDecl()) return; auto TypeArgs = TargetObjCPtr->getTypeArgs(); if (TypeArgs.size() != 1) return; QualType TargetElementType = TypeArgs[0]; for (unsigned I = 0, N = ArrayLiteral->getNumElements(); I != N; ++I) { checkObjCCollectionLiteralElement(S, TargetElementType, ArrayLiteral->getElement(I), 0); } } /// Check an Objective-C dictionary literal being converted to the given /// target type. static void checkObjCDictionaryLiteral( Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { if (!S.NSDictionaryDecl) return; const auto *TargetObjCPtr = TargetType->getAs(); if (!TargetObjCPtr) return; if (TargetObjCPtr->isUnspecialized() || TargetObjCPtr->getInterfaceDecl()->getCanonicalDecl() != S.NSDictionaryDecl->getCanonicalDecl()) return; auto TypeArgs = TargetObjCPtr->getTypeArgs(); if (TypeArgs.size() != 2) return; QualType TargetKeyType = TypeArgs[0]; QualType TargetObjectType = TypeArgs[1]; for (unsigned I = 0, N = DictionaryLiteral->getNumElements(); I != N; ++I) { auto Element = DictionaryLiteral->getKeyValueElement(I); checkObjCCollectionLiteralElement(S, TargetKeyType, Element.Key, 1); checkObjCCollectionLiteralElement(S, TargetObjectType, Element.Value, 2); } } a6385 7 // Check implicit casts from Objective-C collection literals to specialized // collection types, e.g., NSArray *. if (auto *ArrayLiteral = dyn_cast(E)) checkObjCArrayLiteral(S, QualType(Target, 0), ArrayLiteral); else if (auto *DictionaryLiteral = dyn_cast(E)) checkObjCDictionaryLiteral(S, QualType(Target, 0), DictionaryLiteral); a6443 8 } // ... or possibly if we're increasing rank, too else if (TargetBT->getKind() > SourceBT->getKind()) { if (S.SourceMgr.isInSystemMacro(CC)) return; DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_double_promotion); d6466 3 a6468 9 // Detect the case where a call result is converted from floating-point to // to bool, and the final argument to the call is converted from bool, to // discover this typo: // // bool b = fabs(x < 1.0); // should be "bool b = fabs(x) < 1.0;" // // FIXME: This is an incredibly special case; is there some more general // way to detect this class of misplaced-parentheses bug? if (Target->isBooleanType() && isa(E)) { d6473 2 a6474 1 if (unsigned NumArgs = CEx->getNumArgs()) { d6477 3 a6479 2 if (isa(LastA) && InnerE->getType()->isBooleanType()) { d6662 4 a6665 8 if (PseudoObjectExpr *POE = dyn_cast(E)) { // The bound subexpressions in a PseudoObjectExpr are not reachable // as transitive children. // FIXME: Use a more uniform representation for this. for (auto *SE : POE->semantics()) if (auto *OVE = dyn_cast(SE)) AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC); d6667 4 a6670 1 d6700 2 a6701 2 for (Stmt *SubStmt : E->children()) { Expr *ChildExpr = dyn_cast_or_null(SubStmt); d6730 6 d6751 1 a6751 1 if (!Call->getCallReturnType(SemaRef.Context)->isReferenceType()) a6833 20 auto ComplainAboutNonnullParamOrCall = [&](bool IsParam) { std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, nullptr, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_nonnull_expr_compare : diag::warn_cast_nonnull_to_bool; Diag(E->getExprLoc(), DiagID) << IsParam << S.str() << E->getSourceRange() << Range << IsEqual; }; // If we have a CallExpr that is tagged with returns_nonnull, we can complain. if (auto *Call = dyn_cast(E->IgnoreParenImpCasts())) { if (auto *Callee = Call->getDirectCallee()) { if (Callee->hasAttr()) { ComplainAboutNonnullParamOrCall(false); return; } } } d6845 1 a6845 1 d6847 5 a6851 13 if (const auto* PV = dyn_cast(D)) { if (getCurFunction() && !getCurFunction()->ModifiedNonNullParams.count(PV)) { if (PV->hasAttr()) { ComplainAboutNonnullParamOrCall(true); return; } if (const auto *FD = dyn_cast(PV->getDeclContext())) { auto ParamIter = std::find(FD->param_begin(), FD->param_end(), PV); assert(ParamIter != FD->param_end()); unsigned ParamNo = std::distance(FD->param_begin(), ParamIter); d6854 7 a6860 2 ComplainAboutNonnullParamOrCall(true); return; d6862 12 a6873 4 for (unsigned ArgNo : NonNull->args()) { if (ArgNo == ParamNo) { ComplainAboutNonnullParamOrCall(true); a6875 2 } } d6878 1 a6878 2 } d6899 1 a6899 5 enum { AddressOf, FunctionPointer, ArrayPointer } DiagType; a6984 4 else if (auto InitList = dyn_cast(E)) for (Expr *E : InitList->inits()) if (isa(E->IgnoreParenCasts())) E->IgnoreParenCasts()->EvaluateForOverflow(Context); a7495 29 static void diagnoseArrayStarInParamType(Sema &S, QualType PType, SourceLocation Loc) { if (!PType->isVariablyModifiedType()) return; if (const auto *PointerTy = dyn_cast(PType)) { diagnoseArrayStarInParamType(S, PointerTy->getPointeeType(), Loc); return; } if (const auto *ReferenceTy = dyn_cast(PType)) { diagnoseArrayStarInParamType(S, ReferenceTy->getPointeeType(), Loc); return; } if (const auto *ParenTy = dyn_cast(PType)) { diagnoseArrayStarInParamType(S, ParenTy->getInnerType(), Loc); return; } const ArrayType *AT = S.Context.getAsArrayType(PType); if (!AT) return; if (AT->getSizeModifier() != ArrayType::Star) { diagnoseArrayStarInParamType(S, AT->getElementType(), Loc); return; } S.Diag(Loc, diag::err_array_star_in_function_definition); } d7534 9 a7542 3 // FIXME: This diagnostic should point the '[*]' if source-location // information is added for it. diagnoseArrayStarInParamType(*this, PType, Param->getLocation()); a7563 9 // Parameters with the pass_object_size attribute only need to be marked // constant at function definitions. Because we lack information about // whether we're on a declaration or definition when we're instantiating the // attribute, we need to check for constness here. if (const auto *Attr = Param->getAttr()) if (!Param->getType().isConstQualified()) Diag(Param->getLocation(), diag::err_attribute_pointers_only) << Attr->getSpelling() << 1; d7683 1 a7683 1 if (!IndexExpr->EvaluateAsInt(index, Context, Expr::SE_AllowSideEffects)) a7796 7 case Stmt::OMPArraySectionExprClass: { const OMPArraySectionExpr *ASE = cast(expr); if (ASE->getLowerBound()) CheckArrayAccess(ASE->getBase(), ASE->getLowerBound(), /*ASE=*/nullptr, AllowOnePastEnd > 0); return; } a8059 167 static Optional GetNSMutableArrayArgumentIndex(Sema &S, ObjCMessageExpr *Message) { bool IsMutableArray = S.NSAPIObj->isSubclassOfNSClass( Message->getReceiverInterface(), NSAPI::ClassId_NSMutableArray); if (!IsMutableArray) { return None; } Selector Sel = Message->getSelector(); Optional MKOpt = S.NSAPIObj->getNSArrayMethodKind(Sel); if (!MKOpt) { return None; } NSAPI::NSArrayMethodKind MK = *MKOpt; switch (MK) { case NSAPI::NSMutableArr_addObject: case NSAPI::NSMutableArr_insertObjectAtIndex: case NSAPI::NSMutableArr_setObjectAtIndexedSubscript: return 0; case NSAPI::NSMutableArr_replaceObjectAtIndex: return 1; default: return None; } return None; } static Optional GetNSMutableDictionaryArgumentIndex(Sema &S, ObjCMessageExpr *Message) { bool IsMutableDictionary = S.NSAPIObj->isSubclassOfNSClass( Message->getReceiverInterface(), NSAPI::ClassId_NSMutableDictionary); if (!IsMutableDictionary) { return None; } Selector Sel = Message->getSelector(); Optional MKOpt = S.NSAPIObj->getNSDictionaryMethodKind(Sel); if (!MKOpt) { return None; } NSAPI::NSDictionaryMethodKind MK = *MKOpt; switch (MK) { case NSAPI::NSMutableDict_setObjectForKey: case NSAPI::NSMutableDict_setValueForKey: case NSAPI::NSMutableDict_setObjectForKeyedSubscript: return 0; default: return None; } return None; } static Optional GetNSSetArgumentIndex(Sema &S, ObjCMessageExpr *Message) { bool IsMutableSet = S.NSAPIObj->isSubclassOfNSClass( Message->getReceiverInterface(), NSAPI::ClassId_NSMutableSet); bool IsMutableOrderedSet = S.NSAPIObj->isSubclassOfNSClass( Message->getReceiverInterface(), NSAPI::ClassId_NSMutableOrderedSet); if (!IsMutableSet && !IsMutableOrderedSet) { return None; } Selector Sel = Message->getSelector(); Optional MKOpt = S.NSAPIObj->getNSSetMethodKind(Sel); if (!MKOpt) { return None; } NSAPI::NSSetMethodKind MK = *MKOpt; switch (MK) { case NSAPI::NSMutableSet_addObject: case NSAPI::NSOrderedSet_setObjectAtIndex: case NSAPI::NSOrderedSet_setObjectAtIndexedSubscript: case NSAPI::NSOrderedSet_insertObjectAtIndex: return 0; case NSAPI::NSOrderedSet_replaceObjectAtIndexWithObject: return 1; } return None; } void Sema::CheckObjCCircularContainer(ObjCMessageExpr *Message) { if (!Message->isInstanceMessage()) { return; } Optional ArgOpt; if (!(ArgOpt = GetNSMutableArrayArgumentIndex(*this, Message)) && !(ArgOpt = GetNSMutableDictionaryArgumentIndex(*this, Message)) && !(ArgOpt = GetNSSetArgumentIndex(*this, Message))) { return; } int ArgIndex = *ArgOpt; Expr *Arg = Message->getArg(ArgIndex)->IgnoreImpCasts(); if (OpaqueValueExpr *OE = dyn_cast(Arg)) { Arg = OE->getSourceExpr()->IgnoreImpCasts(); } if (Message->getReceiverKind() == ObjCMessageExpr::SuperInstance) { if (DeclRefExpr *ArgRE = dyn_cast(Arg)) { if (ArgRE->isObjCSelfExpr()) { Diag(Message->getSourceRange().getBegin(), diag::warn_objc_circular_container) << ArgRE->getDecl()->getName() << StringRef("super"); } } } else { Expr *Receiver = Message->getInstanceReceiver()->IgnoreImpCasts(); if (OpaqueValueExpr *OE = dyn_cast(Receiver)) { Receiver = OE->getSourceExpr()->IgnoreImpCasts(); } if (DeclRefExpr *ReceiverRE = dyn_cast(Receiver)) { if (DeclRefExpr *ArgRE = dyn_cast(Arg)) { if (ReceiverRE->getDecl() == ArgRE->getDecl()) { ValueDecl *Decl = ReceiverRE->getDecl(); Diag(Message->getSourceRange().getBegin(), diag::warn_objc_circular_container) << Decl->getName() << Decl->getName(); if (!ArgRE->isObjCSelfExpr()) { Diag(Decl->getLocation(), diag::note_objc_circular_container_declared_here) << Decl->getName(); } } } } else if (ObjCIvarRefExpr *IvarRE = dyn_cast(Receiver)) { if (ObjCIvarRefExpr *IvarArgRE = dyn_cast(Arg)) { if (IvarRE->getDecl() == IvarArgRE->getDecl()) { ObjCIvarDecl *Decl = IvarRE->getDecl(); Diag(Message->getSourceRange().getBegin(), diag::warn_objc_circular_container) << Decl->getName() << Decl->getName(); Diag(Decl->getLocation(), diag::note_objc_circular_container_declared_here) << Decl->getName(); } } } } } d8244 1 a8244 1 unsigned StmtLine = SourceMgr.getPresumedLineNumber(StmtLoc, d8840 1 @ 1.1.1.10.2.1 log @Sync with HEAD @ text @d15 1 a35 1 #include "clang/Sema/SemaInternal.h" a39 2 #include "llvm/Support/Format.h" #include "llvm/Support/Locale.h" d41 1 a41 1 a260 467 static inline bool isBlockPointer(Expr *Arg) { return Arg->getType()->isBlockPointerType(); } /// OpenCL C v2.0, s6.13.17.2 - Checks that the block parameters are all local /// void*, which is a requirement of device side enqueue. static bool checkOpenCLBlockArgs(Sema &S, Expr *BlockArg) { const BlockPointerType *BPT = cast(BlockArg->getType().getCanonicalType()); ArrayRef Params = BPT->getPointeeType()->getAs()->getParamTypes(); unsigned ArgCounter = 0; bool IllegalParams = false; // Iterate through the block parameters until either one is found that is not // a local void*, or the block is valid. for (ArrayRef::iterator I = Params.begin(), E = Params.end(); I != E; ++I, ++ArgCounter) { if (!(*I)->isPointerType() || !(*I)->getPointeeType()->isVoidType() || (*I)->getPointeeType().getQualifiers().getAddressSpace() != LangAS::opencl_local) { // Get the location of the error. If a block literal has been passed // (BlockExpr) then we can point straight to the offending argument, // else we just point to the variable reference. SourceLocation ErrorLoc; if (isa(BlockArg)) { BlockDecl *BD = cast(BlockArg)->getBlockDecl(); ErrorLoc = BD->getParamDecl(ArgCounter)->getLocStart(); } else if (isa(BlockArg)) { ErrorLoc = cast(BlockArg)->getLocStart(); } S.Diag(ErrorLoc, diag::err_opencl_enqueue_kernel_blocks_non_local_void_args); IllegalParams = true; } } return IllegalParams; } /// OpenCL C v2.0, s6.13.17.6 - Check the argument to the /// get_kernel_work_group_size /// and get_kernel_preferred_work_group_size_multiple builtin functions. static bool SemaOpenCLBuiltinKernelWorkGroupSize(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 1)) return true; Expr *BlockArg = TheCall->getArg(0); if (!isBlockPointer(BlockArg)) { S.Diag(BlockArg->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } return checkOpenCLBlockArgs(S, BlockArg); } /// Diagnose integer type and any valid implicit convertion to it. static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntType); static bool checkOpenCLEnqueueLocalSizeArgs(Sema &S, CallExpr *TheCall, unsigned Start, unsigned End) { bool IllegalParams = false; for (unsigned I = Start; I <= End; ++I) IllegalParams |= checkOpenCLEnqueueIntType(S, TheCall->getArg(I), S.Context.getSizeType()); return IllegalParams; } /// OpenCL v2.0, s6.13.17.1 - Check that sizes are provided for all /// 'local void*' parameter of passed block. static bool checkOpenCLEnqueueVariadicArgs(Sema &S, CallExpr *TheCall, Expr *BlockArg, unsigned NumNonVarArgs) { const BlockPointerType *BPT = cast(BlockArg->getType().getCanonicalType()); unsigned NumBlockParams = BPT->getPointeeType()->getAs()->getNumParams(); unsigned TotalNumArgs = TheCall->getNumArgs(); // For each argument passed to the block, a corresponding uint needs to // be passed to describe the size of the local memory. if (TotalNumArgs != NumBlockParams + NumNonVarArgs) { S.Diag(TheCall->getLocStart(), diag::err_opencl_enqueue_kernel_local_size_args); return true; } // Check that the sizes of the local memory are specified by integers. return checkOpenCLEnqueueLocalSizeArgs(S, TheCall, NumNonVarArgs, TotalNumArgs - 1); } /// OpenCL C v2.0, s6.13.17 - Enqueue kernel function contains four different /// overload formats specified in Table 6.13.17.1. /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// void (^block)(void)) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// uint num_events_in_wait_list, /// clk_event_t *event_wait_list, /// clk_event_t *event_ret, /// void (^block)(void)) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// void (^block)(local void*, ...), /// uint size0, ...) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// uint num_events_in_wait_list, /// clk_event_t *event_wait_list, /// clk_event_t *event_ret, /// void (^block)(local void*, ...), /// uint size0, ...) static bool SemaOpenCLBuiltinEnqueueKernel(Sema &S, CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs < 4) { S.Diag(TheCall->getLocStart(), diag::err_typecheck_call_too_few_args); return true; } Expr *Arg0 = TheCall->getArg(0); Expr *Arg1 = TheCall->getArg(1); Expr *Arg2 = TheCall->getArg(2); Expr *Arg3 = TheCall->getArg(3); // First argument always needs to be a queue_t type. if (!Arg0->getType()->isQueueT()) { S.Diag(TheCall->getArg(0)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.OCLQueueTy; return true; } // Second argument always needs to be a kernel_enqueue_flags_t enum value. if (!Arg1->getType()->isIntegerType()) { S.Diag(TheCall->getArg(1)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "'kernel_enqueue_flags_t' (i.e. uint)"; return true; } // Third argument is always an ndrange_t type. if (!Arg2->getType()->isNDRangeT()) { S.Diag(TheCall->getArg(2)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.OCLNDRangeTy; return true; } // With four arguments, there is only one form that the function could be // called in: no events and no variable arguments. if (NumArgs == 4) { // check that the last argument is the right block type. if (!isBlockPointer(Arg3)) { S.Diag(Arg3->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } // we have a block type, check the prototype const BlockPointerType *BPT = cast(Arg3->getType().getCanonicalType()); if (BPT->getPointeeType()->getAs()->getNumParams() > 0) { S.Diag(Arg3->getLocStart(), diag::err_opencl_enqueue_kernel_blocks_no_args); return true; } return false; } // we can have block + varargs. if (isBlockPointer(Arg3)) return (checkOpenCLBlockArgs(S, Arg3) || checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg3, 4)); // last two cases with either exactly 7 args or 7 args and varargs. if (NumArgs >= 7) { // check common block argument. Expr *Arg6 = TheCall->getArg(6); if (!isBlockPointer(Arg6)) { S.Diag(Arg6->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } if (checkOpenCLBlockArgs(S, Arg6)) return true; // Forth argument has to be any integer type. if (!Arg3->getType()->isIntegerType()) { S.Diag(TheCall->getArg(3)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "integer"; return true; } // check remaining common arguments. Expr *Arg4 = TheCall->getArg(4); Expr *Arg5 = TheCall->getArg(5); // Fifth argument is always passed as a pointer to clk_event_t. if (!Arg4->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) && !Arg4->getType()->getPointeeOrArrayElementType()->isClkEventT()) { S.Diag(TheCall->getArg(4)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.getPointerType(S.Context.OCLClkEventTy); return true; } // Sixth argument is always passed as a pointer to clk_event_t. if (!Arg5->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) && !(Arg5->getType()->isPointerType() && Arg5->getType()->getPointeeType()->isClkEventT())) { S.Diag(TheCall->getArg(5)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.getPointerType(S.Context.OCLClkEventTy); return true; } if (NumArgs == 7) return false; return checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg6, 7); } // None of the specific case has been detected, give generic error S.Diag(TheCall->getLocStart(), diag::err_opencl_enqueue_kernel_incorrect_args); return true; } /// Returns OpenCL access qual. static OpenCLAccessAttr *getOpenCLArgAccess(const Decl *D) { return D->getAttr(); } /// Returns true if pipe element type is different from the pointer. static bool checkOpenCLPipeArg(Sema &S, CallExpr *Call) { const Expr *Arg0 = Call->getArg(0); // First argument type should always be pipe. if (!Arg0->getType()->isPipeType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_first_arg) << Call->getDirectCallee() << Arg0->getSourceRange(); return true; } OpenCLAccessAttr *AccessQual = getOpenCLArgAccess(cast(Arg0)->getDecl()); // Validates the access qualifier is compatible with the call. // OpenCL v2.0 s6.13.16 - The access qualifiers for pipe should only be // read_only and write_only, and assumed to be read_only if no qualifier is // specified. switch (Call->getDirectCallee()->getBuiltinID()) { case Builtin::BIread_pipe: case Builtin::BIreserve_read_pipe: case Builtin::BIcommit_read_pipe: case Builtin::BIwork_group_reserve_read_pipe: case Builtin::BIsub_group_reserve_read_pipe: case Builtin::BIwork_group_commit_read_pipe: case Builtin::BIsub_group_commit_read_pipe: if (!(!AccessQual || AccessQual->isReadOnly())) { S.Diag(Arg0->getLocStart(), diag::err_opencl_builtin_pipe_invalid_access_modifier) << "read_only" << Arg0->getSourceRange(); return true; } break; case Builtin::BIwrite_pipe: case Builtin::BIreserve_write_pipe: case Builtin::BIcommit_write_pipe: case Builtin::BIwork_group_reserve_write_pipe: case Builtin::BIsub_group_reserve_write_pipe: case Builtin::BIwork_group_commit_write_pipe: case Builtin::BIsub_group_commit_write_pipe: if (!(AccessQual && AccessQual->isWriteOnly())) { S.Diag(Arg0->getLocStart(), diag::err_opencl_builtin_pipe_invalid_access_modifier) << "write_only" << Arg0->getSourceRange(); return true; } break; default: break; } return false; } /// Returns true if pipe element type is different from the pointer. static bool checkOpenCLPipePacketType(Sema &S, CallExpr *Call, unsigned Idx) { const Expr *Arg0 = Call->getArg(0); const Expr *ArgIdx = Call->getArg(Idx); const PipeType *PipeTy = cast(Arg0->getType()); const QualType EltTy = PipeTy->getElementType(); const PointerType *ArgTy = ArgIdx->getType()->getAs(); // The Idx argument should be a pointer and the type of the pointer and // the type of pipe element should also be the same. if (!ArgTy || !S.Context.hasSameType( EltTy, ArgTy->getPointeeType()->getCanonicalTypeInternal())) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.getPointerType(EltTy) << ArgIdx->getType() << ArgIdx->getSourceRange(); return true; } return false; } // \brief Performs semantic analysis for the read/write_pipe call. // \param S Reference to the semantic analyzer. // \param Call A pointer to the builtin call. // \return True if a semantic error has been found, false otherwise. static bool SemaBuiltinRWPipe(Sema &S, CallExpr *Call) { // OpenCL v2.0 s6.13.16.2 - The built-in read/write // functions have two forms. switch (Call->getNumArgs()) { case 2: { if (checkOpenCLPipeArg(S, Call)) return true; // The call with 2 arguments should be // read/write_pipe(pipe T, T*). // Check packet type T. if (checkOpenCLPipePacketType(S, Call, 1)) return true; } break; case 4: { if (checkOpenCLPipeArg(S, Call)) return true; // The call with 4 arguments should be // read/write_pipe(pipe T, reserve_id_t, uint, T*). // Check reserve_id_t. if (!Call->getArg(1)->getType()->isReserveIDT()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.OCLReserveIDTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } // Check the index. const Expr *Arg2 = Call->getArg(2); if (!Arg2->getType()->isIntegerType() && !Arg2->getType()->isUnsignedIntegerType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.UnsignedIntTy << Arg2->getType() << Arg2->getSourceRange(); return true; } // Check packet type T. if (checkOpenCLPipePacketType(S, Call, 3)) return true; } break; default: S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_arg_num) << Call->getDirectCallee() << Call->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on the {work_group_/sub_group_ // /_}reserve_{read/write}_pipe // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinReserveRWPipe(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 2)) return true; if (checkOpenCLPipeArg(S, Call)) return true; // Check the reserve size. if (!Call->getArg(1)->getType()->isIntegerType() && !Call->getArg(1)->getType()->isUnsignedIntegerType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.UnsignedIntTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on {work_group_/sub_group_ // /_}commit_{read/write}_pipe // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinCommitRWPipe(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 2)) return true; if (checkOpenCLPipeArg(S, Call)) return true; // Check reserve_id_t. if (!Call->getArg(1)->getType()->isReserveIDT()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.OCLReserveIDTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on the call to built-in Pipe // Query Functions. // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinPipePackets(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 1)) return true; if (!Call->getArg(0)->getType()->isPipeType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_first_arg) << Call->getDirectCallee() << Call->getArg(0)->getSourceRange(); return true; } return false; } // \brief OpenCL v2.0 s6.13.9 - Address space qualifier functions. // \brief Performs semantic analysis for the to_global/local/private call. // \param S Reference to the semantic analyzer. // \param BuiltinID ID of the builtin function. // \param Call A pointer to the builtin call. // \return True if a semantic error has been found, false otherwise. static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned BuiltinID, CallExpr *Call) { if (Call->getNumArgs() != 1) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_to_addr_arg_num) << Call->getDirectCallee() << Call->getSourceRange(); return true; } auto RT = Call->getArg(0)->getType(); if (!RT->isPointerType() || RT->getPointeeType() .getAddressSpace() == LangAS::opencl_constant) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_to_addr_invalid_arg) << Call->getArg(0) << Call->getDirectCallee() << Call->getSourceRange(); return true; } RT = RT->getPointeeType(); auto Qual = RT.getQualifiers(); switch (BuiltinID) { case Builtin::BIto_global: Qual.setAddressSpace(LangAS::opencl_global); break; case Builtin::BIto_local: Qual.setAddressSpace(LangAS::opencl_local); break; default: Qual.removeAddressSpace(); } Call->setType(S.Context.getPointerType(S.Context.getQualifiedType( RT.getUnqualifiedType(), Qual))); return false; } a338 4 case Builtin::BI__builtin_alloca_with_align: if (SemaBuiltinAllocaWithAlign(TheCall)) return ExprError(); break; d533 1 d538 1 d540 1 a540 1 case Builtin::BI_exception_code: d545 1 d547 1 a547 1 case Builtin::BI_exception_info: d552 2 d566 1 a566 59 // OpenCL v2.0, s6.13.16 - Pipe functions case Builtin::BIread_pipe: case Builtin::BIwrite_pipe: // Since those two functions are declared with var args, we need a semantic // check for the argument. if (SemaBuiltinRWPipe(*this, TheCall)) return ExprError(); TheCall->setType(Context.IntTy); break; case Builtin::BIreserve_read_pipe: case Builtin::BIreserve_write_pipe: case Builtin::BIwork_group_reserve_read_pipe: case Builtin::BIwork_group_reserve_write_pipe: case Builtin::BIsub_group_reserve_read_pipe: case Builtin::BIsub_group_reserve_write_pipe: if (SemaBuiltinReserveRWPipe(*this, TheCall)) return ExprError(); // Since return type of reserve_read/write_pipe built-in function is // reserve_id_t, which is not defined in the builtin def file , we used int // as return type and need to override the return type of these functions. TheCall->setType(Context.OCLReserveIDTy); break; case Builtin::BIcommit_read_pipe: case Builtin::BIcommit_write_pipe: case Builtin::BIwork_group_commit_read_pipe: case Builtin::BIwork_group_commit_write_pipe: case Builtin::BIsub_group_commit_read_pipe: case Builtin::BIsub_group_commit_write_pipe: if (SemaBuiltinCommitRWPipe(*this, TheCall)) return ExprError(); break; case Builtin::BIget_pipe_num_packets: case Builtin::BIget_pipe_max_packets: if (SemaBuiltinPipePackets(*this, TheCall)) return ExprError(); TheCall->setType(Context.UnsignedIntTy); break; case Builtin::BIto_global: case Builtin::BIto_local: case Builtin::BIto_private: if (SemaOpenCLBuiltinToAddr(*this, BuiltinID, TheCall)) return ExprError(); break; // OpenCL v2.0, s6.13.17 - Enqueue kernel functions. case Builtin::BIenqueue_kernel: if (SemaOpenCLBuiltinEnqueueKernel(*this, TheCall)) return ExprError(); break; case Builtin::BIget_kernel_work_group_size: case Builtin::BIget_kernel_preferred_work_group_size_multiple: if (SemaOpenCLBuiltinKernelWorkGroupSize(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_os_log_format: case Builtin::BI__builtin_os_log_format_buffer_size: if (SemaBuiltinOSLogFormat(TheCall)) { return ExprError(); } break; d719 1 a719 2 bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_be; d846 1 d934 1 a934 1 return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); a957 9 // CheckMipsBuiltinFunctionCall - Checks the constant value passed to the // intrinsic is correct. The switch statement is ordered by DSP, MSA. The // ordering for DSP is unspecified. MSA is ordered by the data format used // by the underlying instruction i.e., df/m, df/n and then by size. // // FIXME: The size tests here should instead be tablegen'd along with the // definitions from include/clang/Basic/BuiltinsMips.def. // FIXME: GCC is strict on signedness for some of these intrinsics, we should // be too. d959 1 a959 1 unsigned i = 0, l = 0, u = 0, m = 0; a968 155 // MSA instrinsics. Instructions (which the intrinsics maps to) which use the // df/m field. // These intrinsics take an unsigned 3 bit immediate. case Mips::BI__builtin_msa_bclri_b: case Mips::BI__builtin_msa_bnegi_b: case Mips::BI__builtin_msa_bseti_b: case Mips::BI__builtin_msa_sat_s_b: case Mips::BI__builtin_msa_sat_u_b: case Mips::BI__builtin_msa_slli_b: case Mips::BI__builtin_msa_srai_b: case Mips::BI__builtin_msa_srari_b: case Mips::BI__builtin_msa_srli_b: case Mips::BI__builtin_msa_srlri_b: i = 1; l = 0; u = 7; break; case Mips::BI__builtin_msa_binsli_b: case Mips::BI__builtin_msa_binsri_b: i = 2; l = 0; u = 7; break; // These intrinsics take an unsigned 4 bit immediate. case Mips::BI__builtin_msa_bclri_h: case Mips::BI__builtin_msa_bnegi_h: case Mips::BI__builtin_msa_bseti_h: case Mips::BI__builtin_msa_sat_s_h: case Mips::BI__builtin_msa_sat_u_h: case Mips::BI__builtin_msa_slli_h: case Mips::BI__builtin_msa_srai_h: case Mips::BI__builtin_msa_srari_h: case Mips::BI__builtin_msa_srli_h: case Mips::BI__builtin_msa_srlri_h: i = 1; l = 0; u = 15; break; case Mips::BI__builtin_msa_binsli_h: case Mips::BI__builtin_msa_binsri_h: i = 2; l = 0; u = 15; break; // These intrinsics take an unsigned 5 bit immedate. // The first block of intrinsics actually have an unsigned 5 bit field, // not a df/n field. case Mips::BI__builtin_msa_clei_u_b: case Mips::BI__builtin_msa_clei_u_h: case Mips::BI__builtin_msa_clei_u_w: case Mips::BI__builtin_msa_clei_u_d: case Mips::BI__builtin_msa_clti_u_b: case Mips::BI__builtin_msa_clti_u_h: case Mips::BI__builtin_msa_clti_u_w: case Mips::BI__builtin_msa_clti_u_d: case Mips::BI__builtin_msa_maxi_u_b: case Mips::BI__builtin_msa_maxi_u_h: case Mips::BI__builtin_msa_maxi_u_w: case Mips::BI__builtin_msa_maxi_u_d: case Mips::BI__builtin_msa_mini_u_b: case Mips::BI__builtin_msa_mini_u_h: case Mips::BI__builtin_msa_mini_u_w: case Mips::BI__builtin_msa_mini_u_d: case Mips::BI__builtin_msa_addvi_b: case Mips::BI__builtin_msa_addvi_h: case Mips::BI__builtin_msa_addvi_w: case Mips::BI__builtin_msa_addvi_d: case Mips::BI__builtin_msa_bclri_w: case Mips::BI__builtin_msa_bnegi_w: case Mips::BI__builtin_msa_bseti_w: case Mips::BI__builtin_msa_sat_s_w: case Mips::BI__builtin_msa_sat_u_w: case Mips::BI__builtin_msa_slli_w: case Mips::BI__builtin_msa_srai_w: case Mips::BI__builtin_msa_srari_w: case Mips::BI__builtin_msa_srli_w: case Mips::BI__builtin_msa_srlri_w: case Mips::BI__builtin_msa_subvi_b: case Mips::BI__builtin_msa_subvi_h: case Mips::BI__builtin_msa_subvi_w: case Mips::BI__builtin_msa_subvi_d: i = 1; l = 0; u = 31; break; case Mips::BI__builtin_msa_binsli_w: case Mips::BI__builtin_msa_binsri_w: i = 2; l = 0; u = 31; break; // These intrinsics take an unsigned 6 bit immediate. case Mips::BI__builtin_msa_bclri_d: case Mips::BI__builtin_msa_bnegi_d: case Mips::BI__builtin_msa_bseti_d: case Mips::BI__builtin_msa_sat_s_d: case Mips::BI__builtin_msa_sat_u_d: case Mips::BI__builtin_msa_slli_d: case Mips::BI__builtin_msa_srai_d: case Mips::BI__builtin_msa_srari_d: case Mips::BI__builtin_msa_srli_d: case Mips::BI__builtin_msa_srlri_d: i = 1; l = 0; u = 63; break; case Mips::BI__builtin_msa_binsli_d: case Mips::BI__builtin_msa_binsri_d: i = 2; l = 0; u = 63; break; // These intrinsics take a signed 5 bit immediate. case Mips::BI__builtin_msa_ceqi_b: case Mips::BI__builtin_msa_ceqi_h: case Mips::BI__builtin_msa_ceqi_w: case Mips::BI__builtin_msa_ceqi_d: case Mips::BI__builtin_msa_clti_s_b: case Mips::BI__builtin_msa_clti_s_h: case Mips::BI__builtin_msa_clti_s_w: case Mips::BI__builtin_msa_clti_s_d: case Mips::BI__builtin_msa_clei_s_b: case Mips::BI__builtin_msa_clei_s_h: case Mips::BI__builtin_msa_clei_s_w: case Mips::BI__builtin_msa_clei_s_d: case Mips::BI__builtin_msa_maxi_s_b: case Mips::BI__builtin_msa_maxi_s_h: case Mips::BI__builtin_msa_maxi_s_w: case Mips::BI__builtin_msa_maxi_s_d: case Mips::BI__builtin_msa_mini_s_b: case Mips::BI__builtin_msa_mini_s_h: case Mips::BI__builtin_msa_mini_s_w: case Mips::BI__builtin_msa_mini_s_d: i = 1; l = -16; u = 15; break; // These intrinsics take an unsigned 8 bit immediate. case Mips::BI__builtin_msa_andi_b: case Mips::BI__builtin_msa_nori_b: case Mips::BI__builtin_msa_ori_b: case Mips::BI__builtin_msa_shf_b: case Mips::BI__builtin_msa_shf_h: case Mips::BI__builtin_msa_shf_w: case Mips::BI__builtin_msa_xori_b: i = 1; l = 0; u = 255; break; case Mips::BI__builtin_msa_bseli_b: case Mips::BI__builtin_msa_bmnzi_b: case Mips::BI__builtin_msa_bmzi_b: i = 2; l = 0; u = 255; break; // df/n format // These intrinsics take an unsigned 4 bit immediate. case Mips::BI__builtin_msa_copy_s_b: case Mips::BI__builtin_msa_copy_u_b: case Mips::BI__builtin_msa_insve_b: case Mips::BI__builtin_msa_splati_b: i = 1; l = 0; u = 15; break; case Mips::BI__builtin_msa_sld_b: case Mips::BI__builtin_msa_sldi_b: i = 2; l = 0; u = 15; break; // These intrinsics take an unsigned 3 bit immediate. case Mips::BI__builtin_msa_copy_s_h: case Mips::BI__builtin_msa_copy_u_h: case Mips::BI__builtin_msa_insve_h: case Mips::BI__builtin_msa_splati_h: i = 1; l = 0; u = 7; break; case Mips::BI__builtin_msa_sld_h: case Mips::BI__builtin_msa_sldi_h: i = 2; l = 0; u = 7; break; // These intrinsics take an unsigned 2 bit immediate. case Mips::BI__builtin_msa_copy_s_w: case Mips::BI__builtin_msa_copy_u_w: case Mips::BI__builtin_msa_insve_w: case Mips::BI__builtin_msa_splati_w: i = 1; l = 0; u = 3; break; case Mips::BI__builtin_msa_sld_w: case Mips::BI__builtin_msa_sldi_w: i = 2; l = 0; u = 3; break; // These intrinsics take an unsigned 1 bit immediate. case Mips::BI__builtin_msa_copy_s_d: case Mips::BI__builtin_msa_copy_u_d: case Mips::BI__builtin_msa_insve_d: case Mips::BI__builtin_msa_splati_d: i = 1; l = 0; u = 1; break; case Mips::BI__builtin_msa_sld_d: case Mips::BI__builtin_msa_sldi_d: i = 2; l = 0; u = 1; break; // Memory offsets and immediate loads. // These intrinsics take a signed 10 bit immediate. case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 127; break; case Mips::BI__builtin_msa_ldi_h: case Mips::BI__builtin_msa_ldi_w: case Mips::BI__builtin_msa_ldi_d: i = 0; l = -512; u = 511; break; case Mips::BI__builtin_msa_ld_b: i = 1; l = -512; u = 511; m = 16; break; case Mips::BI__builtin_msa_ld_h: i = 1; l = -1024; u = 1022; m = 16; break; case Mips::BI__builtin_msa_ld_w: i = 1; l = -2048; u = 2044; m = 16; break; case Mips::BI__builtin_msa_ld_d: i = 1; l = -4096; u = 4088; m = 16; break; case Mips::BI__builtin_msa_st_b: i = 2; l = -512; u = 511; m = 16; break; case Mips::BI__builtin_msa_st_h: i = 2; l = -1024; u = 1022; m = 16; break; case Mips::BI__builtin_msa_st_w: i = 2; l = -2048; u = 2044; m = 16; break; case Mips::BI__builtin_msa_st_d: i = 2; l = -4096; u = 4088; m = 16; break; d971 1 a971 5 if (!m) return SemaBuiltinConstantArgRange(TheCall, i, l, u); return SemaBuiltinConstantArgRange(TheCall, i, l, u) || SemaBuiltinConstantArgMultiple(TheCall, i, m); d1093 2 a1094 6 // Check if the rounding mode is legal. bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) { // Indicates if this instruction has rounding control or just SAE. bool HasRC = false; unsigned ArgNum = 0; d1096 2 a1097 201 default: return false; case X86::BI__builtin_ia32_vcvttsd2si32: case X86::BI__builtin_ia32_vcvttsd2si64: case X86::BI__builtin_ia32_vcvttsd2usi32: case X86::BI__builtin_ia32_vcvttsd2usi64: case X86::BI__builtin_ia32_vcvttss2si32: case X86::BI__builtin_ia32_vcvttss2si64: case X86::BI__builtin_ia32_vcvttss2usi32: case X86::BI__builtin_ia32_vcvttss2usi64: ArgNum = 1; break; case X86::BI__builtin_ia32_cvtps2pd512_mask: case X86::BI__builtin_ia32_cvttpd2dq512_mask: case X86::BI__builtin_ia32_cvttpd2qq512_mask: case X86::BI__builtin_ia32_cvttpd2udq512_mask: case X86::BI__builtin_ia32_cvttpd2uqq512_mask: case X86::BI__builtin_ia32_cvttps2dq512_mask: case X86::BI__builtin_ia32_cvttps2qq512_mask: case X86::BI__builtin_ia32_cvttps2udq512_mask: case X86::BI__builtin_ia32_cvttps2uqq512_mask: case X86::BI__builtin_ia32_exp2pd_mask: case X86::BI__builtin_ia32_exp2ps_mask: case X86::BI__builtin_ia32_getexppd512_mask: case X86::BI__builtin_ia32_getexpps512_mask: case X86::BI__builtin_ia32_rcp28pd_mask: case X86::BI__builtin_ia32_rcp28ps_mask: case X86::BI__builtin_ia32_rsqrt28pd_mask: case X86::BI__builtin_ia32_rsqrt28ps_mask: case X86::BI__builtin_ia32_vcomisd: case X86::BI__builtin_ia32_vcomiss: case X86::BI__builtin_ia32_vcvtph2ps512_mask: ArgNum = 3; break; case X86::BI__builtin_ia32_cmppd512_mask: case X86::BI__builtin_ia32_cmpps512_mask: case X86::BI__builtin_ia32_cmpsd_mask: case X86::BI__builtin_ia32_cmpss_mask: case X86::BI__builtin_ia32_cvtss2sd_round_mask: case X86::BI__builtin_ia32_getexpsd128_round_mask: case X86::BI__builtin_ia32_getexpss128_round_mask: case X86::BI__builtin_ia32_maxpd512_mask: case X86::BI__builtin_ia32_maxps512_mask: case X86::BI__builtin_ia32_maxsd_round_mask: case X86::BI__builtin_ia32_maxss_round_mask: case X86::BI__builtin_ia32_minpd512_mask: case X86::BI__builtin_ia32_minps512_mask: case X86::BI__builtin_ia32_minsd_round_mask: case X86::BI__builtin_ia32_minss_round_mask: case X86::BI__builtin_ia32_rcp28sd_round_mask: case X86::BI__builtin_ia32_rcp28ss_round_mask: case X86::BI__builtin_ia32_reducepd512_mask: case X86::BI__builtin_ia32_reduceps512_mask: case X86::BI__builtin_ia32_rndscalepd_mask: case X86::BI__builtin_ia32_rndscaleps_mask: case X86::BI__builtin_ia32_rsqrt28sd_round_mask: case X86::BI__builtin_ia32_rsqrt28ss_round_mask: ArgNum = 4; break; case X86::BI__builtin_ia32_fixupimmpd512_mask: case X86::BI__builtin_ia32_fixupimmpd512_maskz: case X86::BI__builtin_ia32_fixupimmps512_mask: case X86::BI__builtin_ia32_fixupimmps512_maskz: case X86::BI__builtin_ia32_fixupimmsd_mask: case X86::BI__builtin_ia32_fixupimmsd_maskz: case X86::BI__builtin_ia32_fixupimmss_mask: case X86::BI__builtin_ia32_fixupimmss_maskz: case X86::BI__builtin_ia32_rangepd512_mask: case X86::BI__builtin_ia32_rangeps512_mask: case X86::BI__builtin_ia32_rangesd128_round_mask: case X86::BI__builtin_ia32_rangess128_round_mask: case X86::BI__builtin_ia32_reducesd_mask: case X86::BI__builtin_ia32_reducess_mask: case X86::BI__builtin_ia32_rndscalesd_round_mask: case X86::BI__builtin_ia32_rndscaless_round_mask: ArgNum = 5; break; case X86::BI__builtin_ia32_vcvtsd2si64: case X86::BI__builtin_ia32_vcvtsd2si32: case X86::BI__builtin_ia32_vcvtsd2usi32: case X86::BI__builtin_ia32_vcvtsd2usi64: case X86::BI__builtin_ia32_vcvtss2si32: case X86::BI__builtin_ia32_vcvtss2si64: case X86::BI__builtin_ia32_vcvtss2usi32: case X86::BI__builtin_ia32_vcvtss2usi64: ArgNum = 1; HasRC = true; break; case X86::BI__builtin_ia32_cvtsi2sd64: case X86::BI__builtin_ia32_cvtsi2ss32: case X86::BI__builtin_ia32_cvtsi2ss64: case X86::BI__builtin_ia32_cvtusi2sd64: case X86::BI__builtin_ia32_cvtusi2ss32: case X86::BI__builtin_ia32_cvtusi2ss64: ArgNum = 2; HasRC = true; break; case X86::BI__builtin_ia32_cvtdq2ps512_mask: case X86::BI__builtin_ia32_cvtudq2ps512_mask: case X86::BI__builtin_ia32_cvtpd2ps512_mask: case X86::BI__builtin_ia32_cvtpd2qq512_mask: case X86::BI__builtin_ia32_cvtpd2uqq512_mask: case X86::BI__builtin_ia32_cvtps2qq512_mask: case X86::BI__builtin_ia32_cvtps2uqq512_mask: case X86::BI__builtin_ia32_cvtqq2pd512_mask: case X86::BI__builtin_ia32_cvtqq2ps512_mask: case X86::BI__builtin_ia32_cvtuqq2pd512_mask: case X86::BI__builtin_ia32_cvtuqq2ps512_mask: case X86::BI__builtin_ia32_sqrtpd512_mask: case X86::BI__builtin_ia32_sqrtps512_mask: ArgNum = 3; HasRC = true; break; case X86::BI__builtin_ia32_addpd512_mask: case X86::BI__builtin_ia32_addps512_mask: case X86::BI__builtin_ia32_divpd512_mask: case X86::BI__builtin_ia32_divps512_mask: case X86::BI__builtin_ia32_mulpd512_mask: case X86::BI__builtin_ia32_mulps512_mask: case X86::BI__builtin_ia32_subpd512_mask: case X86::BI__builtin_ia32_subps512_mask: case X86::BI__builtin_ia32_addss_round_mask: case X86::BI__builtin_ia32_addsd_round_mask: case X86::BI__builtin_ia32_divss_round_mask: case X86::BI__builtin_ia32_divsd_round_mask: case X86::BI__builtin_ia32_mulss_round_mask: case X86::BI__builtin_ia32_mulsd_round_mask: case X86::BI__builtin_ia32_subss_round_mask: case X86::BI__builtin_ia32_subsd_round_mask: case X86::BI__builtin_ia32_scalefpd512_mask: case X86::BI__builtin_ia32_scalefps512_mask: case X86::BI__builtin_ia32_scalefsd_round_mask: case X86::BI__builtin_ia32_scalefss_round_mask: case X86::BI__builtin_ia32_getmantpd512_mask: case X86::BI__builtin_ia32_getmantps512_mask: case X86::BI__builtin_ia32_cvtsd2ss_round_mask: case X86::BI__builtin_ia32_sqrtsd_round_mask: case X86::BI__builtin_ia32_sqrtss_round_mask: case X86::BI__builtin_ia32_vfmaddpd512_mask: case X86::BI__builtin_ia32_vfmaddpd512_mask3: case X86::BI__builtin_ia32_vfmaddpd512_maskz: case X86::BI__builtin_ia32_vfmaddps512_mask: case X86::BI__builtin_ia32_vfmaddps512_mask3: case X86::BI__builtin_ia32_vfmaddps512_maskz: case X86::BI__builtin_ia32_vfmaddsubpd512_mask: case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: case X86::BI__builtin_ia32_vfmaddsubpd512_maskz: case X86::BI__builtin_ia32_vfmaddsubps512_mask: case X86::BI__builtin_ia32_vfmaddsubps512_mask3: case X86::BI__builtin_ia32_vfmaddsubps512_maskz: case X86::BI__builtin_ia32_vfmsubpd512_mask3: case X86::BI__builtin_ia32_vfmsubps512_mask3: case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: case X86::BI__builtin_ia32_vfmsubaddps512_mask3: case X86::BI__builtin_ia32_vfnmaddpd512_mask: case X86::BI__builtin_ia32_vfnmaddps512_mask: case X86::BI__builtin_ia32_vfnmsubpd512_mask: case X86::BI__builtin_ia32_vfnmsubpd512_mask3: case X86::BI__builtin_ia32_vfnmsubps512_mask: case X86::BI__builtin_ia32_vfnmsubps512_mask3: case X86::BI__builtin_ia32_vfmaddsd3_mask: case X86::BI__builtin_ia32_vfmaddsd3_maskz: case X86::BI__builtin_ia32_vfmaddsd3_mask3: case X86::BI__builtin_ia32_vfmaddss3_mask: case X86::BI__builtin_ia32_vfmaddss3_maskz: case X86::BI__builtin_ia32_vfmaddss3_mask3: ArgNum = 4; HasRC = true; break; case X86::BI__builtin_ia32_getmantsd_round_mask: case X86::BI__builtin_ia32_getmantss_round_mask: ArgNum = 5; HasRC = true; break; } llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; // Make sure rounding mode is either ROUND_CUR_DIRECTION or ROUND_NO_EXC bit // is set. If the intrinsic has rounding control(bits 1:0), make sure its only // combined with ROUND_NO_EXC. if (Result == 4/*ROUND_CUR_DIRECTION*/ || Result == 8/*ROUND_NO_EXC*/ || (HasRC && Result.getZExtValue() >= 8 && Result.getZExtValue() <= 11)) return false; return Diag(TheCall->getLocStart(), diag::err_x86_builtin_invalid_rounding) << Arg->getSourceRange(); } bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (BuiltinID == X86::BI__builtin_cpu_supports) d1099 1 a1099 2 if (BuiltinID == X86::BI__builtin_ms_va_start) d1101 2 a1102 21 // If the intrinsic has rounding or SAE make sure its valid. if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall)) return true; // For intrinsics which take an immediate value as part of the instruction, // range check them here. int i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case X86::BI_mm_prefetch: i = 1; l = 0; u = 3; break; case X86::BI__builtin_ia32_sha1rnds4: case X86::BI__builtin_ia32_shuf_f32x4_256_mask: case X86::BI__builtin_ia32_shuf_f64x2_256_mask: case X86::BI__builtin_ia32_shuf_i32x4_256_mask: case X86::BI__builtin_ia32_shuf_i64x2_256_mask: i = 2; l = 0; u = 3; break; d1106 1 a1106 3 case X86::BI__builtin_ia32_vpermil2ps256: i = 3; l = 0; u = 3; break; d1130 1 a1130 11 case X86::BI__builtin_ia32_ucmpq512_mask: case X86::BI__builtin_ia32_vpcomub: case X86::BI__builtin_ia32_vpcomuw: case X86::BI__builtin_ia32_vpcomud: case X86::BI__builtin_ia32_vpcomuq: case X86::BI__builtin_ia32_vpcomb: case X86::BI__builtin_ia32_vpcomw: case X86::BI__builtin_ia32_vpcomd: case X86::BI__builtin_ia32_vpcomq: i = 2; l = 0; u = 7; break; d1134 1 a1134 3 case X86::BI__builtin_ia32_roundpd256: i = 1; l = 0; u = 15; break; d1136 1 a1136 11 case X86::BI__builtin_ia32_roundsd: case X86::BI__builtin_ia32_rangepd128_mask: case X86::BI__builtin_ia32_rangepd256_mask: case X86::BI__builtin_ia32_rangepd512_mask: case X86::BI__builtin_ia32_rangeps128_mask: case X86::BI__builtin_ia32_rangeps256_mask: case X86::BI__builtin_ia32_rangeps512_mask: case X86::BI__builtin_ia32_getmantsd_round_mask: case X86::BI__builtin_ia32_getmantss_round_mask: i = 2; l = 0; u = 15; break; a1142 4 case X86::BI__builtin_ia32_cmpps128_mask: case X86::BI__builtin_ia32_cmppd128_mask: case X86::BI__builtin_ia32_cmpps256_mask: case X86::BI__builtin_ia32_cmppd256_mask: d1144 9 a1152 124 case X86::BI__builtin_ia32_cmppd512_mask: case X86::BI__builtin_ia32_cmpsd_mask: case X86::BI__builtin_ia32_cmpss_mask: i = 2; l = 0; u = 31; break; case X86::BI__builtin_ia32_xabort: i = 0; l = -128; u = 255; break; case X86::BI__builtin_ia32_pshufw: case X86::BI__builtin_ia32_aeskeygenassist128: i = 1; l = -128; u = 255; break; case X86::BI__builtin_ia32_vcvtps2ph: case X86::BI__builtin_ia32_vcvtps2ph256: case X86::BI__builtin_ia32_rndscaleps_128_mask: case X86::BI__builtin_ia32_rndscalepd_128_mask: case X86::BI__builtin_ia32_rndscaleps_256_mask: case X86::BI__builtin_ia32_rndscalepd_256_mask: case X86::BI__builtin_ia32_rndscaleps_mask: case X86::BI__builtin_ia32_rndscalepd_mask: case X86::BI__builtin_ia32_reducepd128_mask: case X86::BI__builtin_ia32_reducepd256_mask: case X86::BI__builtin_ia32_reducepd512_mask: case X86::BI__builtin_ia32_reduceps128_mask: case X86::BI__builtin_ia32_reduceps256_mask: case X86::BI__builtin_ia32_reduceps512_mask: case X86::BI__builtin_ia32_prold512_mask: case X86::BI__builtin_ia32_prolq512_mask: case X86::BI__builtin_ia32_prold128_mask: case X86::BI__builtin_ia32_prold256_mask: case X86::BI__builtin_ia32_prolq128_mask: case X86::BI__builtin_ia32_prolq256_mask: case X86::BI__builtin_ia32_prord128_mask: case X86::BI__builtin_ia32_prord256_mask: case X86::BI__builtin_ia32_prorq128_mask: case X86::BI__builtin_ia32_prorq256_mask: case X86::BI__builtin_ia32_fpclasspd128_mask: case X86::BI__builtin_ia32_fpclasspd256_mask: case X86::BI__builtin_ia32_fpclassps128_mask: case X86::BI__builtin_ia32_fpclassps256_mask: case X86::BI__builtin_ia32_fpclassps512_mask: case X86::BI__builtin_ia32_fpclasspd512_mask: case X86::BI__builtin_ia32_fpclasssd_mask: case X86::BI__builtin_ia32_fpclassss_mask: i = 1; l = 0; u = 255; break; case X86::BI__builtin_ia32_palignr: case X86::BI__builtin_ia32_insertps128: case X86::BI__builtin_ia32_dpps: case X86::BI__builtin_ia32_dppd: case X86::BI__builtin_ia32_dpps256: case X86::BI__builtin_ia32_mpsadbw128: case X86::BI__builtin_ia32_mpsadbw256: case X86::BI__builtin_ia32_pcmpistrm128: case X86::BI__builtin_ia32_pcmpistri128: case X86::BI__builtin_ia32_pcmpistria128: case X86::BI__builtin_ia32_pcmpistric128: case X86::BI__builtin_ia32_pcmpistrio128: case X86::BI__builtin_ia32_pcmpistris128: case X86::BI__builtin_ia32_pcmpistriz128: case X86::BI__builtin_ia32_pclmulqdq128: case X86::BI__builtin_ia32_vperm2f128_pd256: case X86::BI__builtin_ia32_vperm2f128_ps256: case X86::BI__builtin_ia32_vperm2f128_si256: case X86::BI__builtin_ia32_permti256: i = 2; l = -128; u = 255; break; case X86::BI__builtin_ia32_palignr128: case X86::BI__builtin_ia32_palignr256: case X86::BI__builtin_ia32_palignr512_mask: case X86::BI__builtin_ia32_vcomisd: case X86::BI__builtin_ia32_vcomiss: case X86::BI__builtin_ia32_shuf_f32x4_mask: case X86::BI__builtin_ia32_shuf_f64x2_mask: case X86::BI__builtin_ia32_shuf_i32x4_mask: case X86::BI__builtin_ia32_shuf_i64x2_mask: case X86::BI__builtin_ia32_dbpsadbw128_mask: case X86::BI__builtin_ia32_dbpsadbw256_mask: case X86::BI__builtin_ia32_dbpsadbw512_mask: i = 2; l = 0; u = 255; break; case X86::BI__builtin_ia32_fixupimmpd512_mask: case X86::BI__builtin_ia32_fixupimmpd512_maskz: case X86::BI__builtin_ia32_fixupimmps512_mask: case X86::BI__builtin_ia32_fixupimmps512_maskz: case X86::BI__builtin_ia32_fixupimmsd_mask: case X86::BI__builtin_ia32_fixupimmsd_maskz: case X86::BI__builtin_ia32_fixupimmss_mask: case X86::BI__builtin_ia32_fixupimmss_maskz: case X86::BI__builtin_ia32_fixupimmpd128_mask: case X86::BI__builtin_ia32_fixupimmpd128_maskz: case X86::BI__builtin_ia32_fixupimmpd256_mask: case X86::BI__builtin_ia32_fixupimmpd256_maskz: case X86::BI__builtin_ia32_fixupimmps128_mask: case X86::BI__builtin_ia32_fixupimmps128_maskz: case X86::BI__builtin_ia32_fixupimmps256_mask: case X86::BI__builtin_ia32_fixupimmps256_maskz: case X86::BI__builtin_ia32_pternlogd512_mask: case X86::BI__builtin_ia32_pternlogd512_maskz: case X86::BI__builtin_ia32_pternlogq512_mask: case X86::BI__builtin_ia32_pternlogq512_maskz: case X86::BI__builtin_ia32_pternlogd128_mask: case X86::BI__builtin_ia32_pternlogd128_maskz: case X86::BI__builtin_ia32_pternlogd256_mask: case X86::BI__builtin_ia32_pternlogd256_maskz: case X86::BI__builtin_ia32_pternlogq128_mask: case X86::BI__builtin_ia32_pternlogq128_maskz: case X86::BI__builtin_ia32_pternlogq256_mask: case X86::BI__builtin_ia32_pternlogq256_maskz: i = 3; l = 0; u = 255; break; case X86::BI__builtin_ia32_pcmpestrm128: case X86::BI__builtin_ia32_pcmpestri128: case X86::BI__builtin_ia32_pcmpestria128: case X86::BI__builtin_ia32_pcmpestric128: case X86::BI__builtin_ia32_pcmpestrio128: case X86::BI__builtin_ia32_pcmpestris128: case X86::BI__builtin_ia32_pcmpestriz128: i = 4; l = -128; u = 255; break; case X86::BI__builtin_ia32_rndscalesd_round_mask: case X86::BI__builtin_ia32_rndscaless_round_mask: i = 4; l = 0; u = 255; break; d1369 1 a1369 2 /// functions, NULL arguments passed to non-NULL parameters, and diagnose_if /// attributes. d1371 3 a1373 3 const Expr *ThisArg, ArrayRef Args, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { d1392 1 a1392 3 auto *FD = dyn_cast_or_null(FDecl); if (CallType != VariadicDoesNotApply && (!FD || FD->getBuiltinID() != Builtin::BI__noop)) { a1417 3 if (FD) diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc); d1428 2 a1429 2 checkCall(FDecl, Proto, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); a1443 2 Expr *ImplicitThis = nullptr; a1447 1 ImplicitThis = Args[0]; d1450 2 a1451 5 } else if (IsMemberFunction) ImplicitThis = cast(TheCall)->getImplicitObjectArgument(); checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs), d1461 1 a1461 3 CheckAbsoluteValueFunction(TheCall, FDecl); CheckMaxUnsignedZero(TheCall, FDecl); d1485 2 a1486 2 checkCall(Method, nullptr, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), d1515 1 a1515 1 checkCall(NDecl, Proto, /*ThisArg=*/nullptr, d1528 1 a1528 1 checkCall(/*FDecl=*/nullptr, Proto, /*ThisArg=*/nullptr, d1537 2 a1538 1 if (!llvm::isValidAtomicOrderingCABI(Ordering)) a1540 1 auto OrderingCABI = (llvm::AtomicOrderingCABI)Ordering; d1548 2 a1549 2 return OrderingCABI != llvm::AtomicOrderingCABI::release && OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; d1554 3 a1556 3 return OrderingCABI != llvm::AtomicOrderingCABI::consume && OrderingCABI != llvm::AtomicOrderingCABI::acquire && OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; a1574 2 LoadCopy, // void __atomic_store(A *, CP, int) d1587 2 a1588 2 const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 3, 4, 5, 6 }; const unsigned NumVals[] = { 1, 0, 1, 1, 1, 1, 2, 2, 3 }; d1618 1 a1619 4 Form = LoadCopy; break; case AtomicExpr::AO__c11_atomic_store: d1683 1 a1683 5 ExprResult ConvertedPtr = DefaultFunctionArrayLvalueConversion(Ptr); if (ConvertedPtr.isInvalid()) return ExprError(); Ptr = ConvertedPtr.get(); d1706 1 a1706 1 } else if (Form != Load && Form != LoadCopy) { d1767 1 a1767 1 // other operands. Similarly atomic_load can take a pointer to a const 'A'. a1768 1 ValType.removeLocalConst(); d1770 1 a1770 1 if (Form == Copy || Form == LoadCopy || Form == GNUXchg || Form == Init) d1781 4 a1805 3 // Treat this argument as _Nonnull as we want to show a warning if // NULL is passed into it. CheckNonNullArgument(*this, ValArg, DRE->getLocStart()); a1850 1 case LoadCopy: d1900 1 d2382 7 a2388 7 SmallVector ToBuf(NumBytes); const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data(); llvm::UTF16 *ToPtr = &ToBuf[0]; llvm::ConversionResult Result = llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, ToPtr + NumBytes, llvm::strictConversion); d2390 1 a2390 1 if (Result != llvm::conversionOK) a2396 25 /// CheckObjCString - Checks that the format string argument to the os_log() /// and os_trace() functions is correct, and converts it to const char *. ExprResult Sema::CheckOSLogFormatStringArg(Expr *Arg) { Arg = Arg->IgnoreParenCasts(); auto *Literal = dyn_cast(Arg); if (!Literal) { if (auto *ObjcLiteral = dyn_cast(Arg)) { Literal = ObjcLiteral->getString(); } } if (!Literal || (!Literal->isAscii() && !Literal->isUTF8())) { return ExprError( Diag(Arg->getLocStart(), diag::err_os_log_format_not_string_constant) << Arg->getSourceRange()); } ExprResult Result(Literal); QualType ResultTy = Context.getPointerType(Context.CharTy.withConst()); InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, ResultTy, false); Result = PerformCopyInitialization(Entity, SourceLocation(), Result); return Result; } a2445 1 bool IsCRegister = false; d2453 1 a2453 1 LastArg = CurBlock->TheDecl->parameters().back(); d2455 1 a2455 1 LastArg = FD->parameters().back(); d2457 1 a2457 1 LastArg = getCurMethodDecl()->parameters().back(); a2461 2 IsCRegister = PV->getStorageClass() == SC_Register && !getLangOpts().CPlusPlus; d2467 4 a2470 17 diag::warn_second_arg_of_va_start_not_last_named_param); else if (IsCRegister || Type->isReferenceType() || Type->isSpecificBuiltinType(BuiltinType::Float) || [=] { // Promotable integers are UB, but enumerations need a bit of // extra checking to see what their promotable type actually is. if (!Type->isPromotableIntegerType()) return false; if (!Type->isEnumeralType()) return true; const EnumDecl *ED = Type->getAs()->getDecl(); return !(ED && Context.typesAreCompatible(ED->getPromotionType(), Type)); }()) { unsigned Reason = 0; if (Type->isReferenceType()) Reason = 1; else if (IsCRegister) Reason = 2; Diag(Arg->getLocStart(), diag::warn_va_start_type_is_undefined) << Reason; d2640 1 a2640 1 // If this is an implicit conversion from float -> float or double, remove it. d2642 6 a2647 10 // Only remove standard FloatCasts, leaving other casts inplace if (Cast->getCastKind() == CK_FloatingCast) { Expr *CastArg = Cast->getSubExpr(); if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) { assert((Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float)) && "promotion from float to either float or double is the only expected cast here"); Cast->setSubExpr(nullptr); TheCall->setArg(NumArgs-1, CastArg); } d2665 2 a2666 1 // 2) binary, scalar mask: (lhs, rhs, index, ..., index) a2804 36 /// Handle __builtin_alloca_with_align. This is declared /// as (size_t, size_t) where the second size_t must be a power of 2 greater /// than 8. bool Sema::SemaBuiltinAllocaWithAlign(CallExpr *TheCall) { // The alignment must be a constant integer. Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { if (const auto *UE = dyn_cast(Arg->IgnoreParenImpCasts())) if (UE->getKind() == UETT_AlignOf) Diag(TheCall->getLocStart(), diag::warn_alloca_align_alignof) << Arg->getSourceRange(); llvm::APSInt Result = Arg->EvaluateKnownConstInt(Context); if (!Result.isPowerOf2()) return Diag(TheCall->getLocStart(), diag::err_alignment_not_power_of_two) << Arg->getSourceRange(); if (Result < Context.getCharWidth()) return Diag(TheCall->getLocStart(), diag::err_alignment_too_small) << (unsigned)Context.getCharWidth() << Arg->getSourceRange(); if (Result > INT32_MAX) return Diag(TheCall->getLocStart(), diag::err_alignment_too_big) << INT32_MAX << Arg->getSourceRange(); } return false; } a2842 80 bool Sema::SemaBuiltinOSLogFormat(CallExpr *TheCall) { unsigned BuiltinID = cast(TheCall->getCalleeDecl())->getBuiltinID(); bool IsSizeCall = BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size; unsigned NumArgs = TheCall->getNumArgs(); unsigned NumRequiredArgs = IsSizeCall ? 1 : 2; if (NumArgs < NumRequiredArgs) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 /* function call */ << NumRequiredArgs << NumArgs << TheCall->getSourceRange(); } if (NumArgs >= NumRequiredArgs + 0x100) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /* function call */ << (NumRequiredArgs + 0xff) << NumArgs << TheCall->getSourceRange(); } unsigned i = 0; // For formatting call, check buffer arg. if (!IsSizeCall) { ExprResult Arg(TheCall->getArg(i)); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, Context.VoidPtrTy, false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); i++; } // Check string literal arg. unsigned FormatIdx = i; { ExprResult Arg = CheckOSLogFormatStringArg(TheCall->getArg(i)); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); i++; } // Make sure variadic args are scalar. unsigned FirstDataArg = i; while (i < NumArgs) { ExprResult Arg = DefaultVariadicArgumentPromotion( TheCall->getArg(i), VariadicFunction, nullptr); if (Arg.isInvalid()) return true; CharUnits ArgSize = Context.getTypeSizeInChars(Arg.get()->getType()); if (ArgSize.getQuantity() >= 0x100) { return Diag(Arg.get()->getLocEnd(), diag::err_os_log_argument_too_big) << i << (int)ArgSize.getQuantity() << 0xff << TheCall->getSourceRange(); } TheCall->setArg(i, Arg.get()); i++; } // Check formatting specifiers. NOTE: We're only doing this for the non-size // call to avoid duplicate diagnostics. if (!IsSizeCall) { llvm::SmallBitVector CheckedVarArgs(NumArgs, false); ArrayRef Args(TheCall->getArgs(), TheCall->getNumArgs()); bool Success = CheckFormatArguments( Args, /*HasVAListArg*/ false, FormatIdx, FirstDataArg, FST_OSLog, VariadicFunction, TheCall->getLocStart(), SourceRange(), CheckedVarArgs); if (!Success) return true; } if (IsSizeCall) { TheCall->setType(Context.getSizeType()); } else { TheCall->setType(Context.VoidPtrTy); } return false; } a2881 22 /// SemaBuiltinConstantArgMultiple - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression is a multiple of Num.. bool Sema::SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, unsigned Num) { llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; if (Result.getSExtValue() % Num != 0) return Diag(TheCall->getLocStart(), diag::err_argument_not_multiple) << Num << Arg->getSourceRange(); return false; } d2948 1 a2948 1 Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 15, 15, 7}); d3005 1 a3015 45 class UncoveredArgHandler { enum { Unknown = -1, AllCovered = -2 }; signed FirstUncoveredArg; SmallVector DiagnosticExprs; public: UncoveredArgHandler() : FirstUncoveredArg(Unknown) { } bool hasUncoveredArg() const { return (FirstUncoveredArg >= 0); } unsigned getUncoveredArg() const { assert(hasUncoveredArg() && "no uncovered argument"); return FirstUncoveredArg; } void setAllCovered() { // A string has been found with all arguments covered, so clear out // the diagnostics. DiagnosticExprs.clear(); FirstUncoveredArg = AllCovered; } void Update(signed NewFirstUncoveredArg, const Expr *StrExpr) { assert(NewFirstUncoveredArg >= 0 && "Outside range"); // Don't update if a previous string covers all arguments. if (FirstUncoveredArg == AllCovered) return; // UncoveredArgHandler tracks the highest uncovered argument index // and with it all the strings that match this index. if (NewFirstUncoveredArg == FirstUncoveredArg) DiagnosticExprs.push_back(StrExpr); else if (NewFirstUncoveredArg > FirstUncoveredArg) { DiagnosticExprs.clear(); DiagnosticExprs.push_back(StrExpr); FirstUncoveredArg = NewFirstUncoveredArg; } } void Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr); }; a3020 40 } // end anonymous namespace static void sumOffsets(llvm::APSInt &Offset, llvm::APSInt Addend, BinaryOperatorKind BinOpKind, bool AddendIsRight) { unsigned BitWidth = Offset.getBitWidth(); unsigned AddendBitWidth = Addend.getBitWidth(); // There might be negative interim results. if (Addend.isUnsigned()) { Addend = Addend.zext(++AddendBitWidth); Addend.setIsSigned(true); } // Adjust the bit width of the APSInts. if (AddendBitWidth > BitWidth) { Offset = Offset.sext(AddendBitWidth); BitWidth = AddendBitWidth; } else if (BitWidth > AddendBitWidth) { Addend = Addend.sext(BitWidth); } bool Ov = false; llvm::APSInt ResOffset = Offset; if (BinOpKind == BO_Add) ResOffset = Offset.sadd_ov(Addend, Ov); else { assert(AddendIsRight && BinOpKind == BO_Sub && "operator must be add or sub with addend on the right"); ResOffset = Offset.ssub_ov(Addend, Ov); } // We add an offset to a pointer here so we should support an offset as big as // possible. if (Ov) { assert(BitWidth <= UINT_MAX / 2 && "index (intermediate) result too big"); Offset = Offset.sext(2 * BitWidth); sumOffsets(Offset, Addend, BinOpKind, AddendIsRight); return; } Offset = ResOffset; a3022 59 namespace { // This is a wrapper class around StringLiteral to support offsetted string // literals as format strings. It takes the offset into account when returning // the string and its length or the source locations to display notes correctly. class FormatStringLiteral { const StringLiteral *FExpr; int64_t Offset; public: FormatStringLiteral(const StringLiteral *fexpr, int64_t Offset = 0) : FExpr(fexpr), Offset(Offset) {} StringRef getString() const { return FExpr->getString().drop_front(Offset); } unsigned getByteLength() const { return FExpr->getByteLength() - getCharByteWidth() * Offset; } unsigned getLength() const { return FExpr->getLength() - Offset; } unsigned getCharByteWidth() const { return FExpr->getCharByteWidth(); } StringLiteral::StringKind getKind() const { return FExpr->getKind(); } QualType getType() const { return FExpr->getType(); } bool isAscii() const { return FExpr->isAscii(); } bool isWide() const { return FExpr->isWide(); } bool isUTF8() const { return FExpr->isUTF8(); } bool isUTF16() const { return FExpr->isUTF16(); } bool isUTF32() const { return FExpr->isUTF32(); } bool isPascal() const { return FExpr->isPascal(); } SourceLocation getLocationOfByte( unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, const TargetInfo &Target, unsigned *StartToken = nullptr, unsigned *StartTokenByteOffset = nullptr) const { return FExpr->getLocationOfByte(ByteNo + Offset, SM, Features, Target, StartToken, StartTokenByteOffset); } SourceLocation getLocStart() const LLVM_READONLY { return FExpr->getLocStart().getLocWithOffset(Offset); } SourceLocation getLocEnd() const LLVM_READONLY { return FExpr->getLocEnd(); } }; } // end anonymous namespace static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg); d3032 1 a3032 3 llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg, llvm::APSInt Offset) { a3033 2 assert(Offset.isSigned() && "invalid offset"); d3053 6 a3058 31 // Determine whether it is necessary to check both sub-expressions, for // example, because the condition expression is a constant that can be // evaluated at compile time. bool CheckLeft = true, CheckRight = true; bool Cond; if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext())) { if (Cond) CheckRight = false; else CheckLeft = false; } // We need to maintain the offsets for the right and the left hand side // separately to check if every possible indexed expression is a valid // string literal. They might have different offsets for different string // literals in the end. StringLiteralCheckType Left; if (!CheckLeft) Left = SLCT_UncheckedLiteral; else { Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); if (Left == SLCT_NotALiteral || !CheckRight) { return Left; } } d3062 2 a3063 4 Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); return (CheckLeft && Left < Right) ? Left : Right; d3114 1 a3114 2 /*InFunctionCall*/ false, CheckedVarArgs, UncoveredArg, Offset); d3169 1 a3169 1 CheckedVarArgs, UncoveredArg, Offset); d3178 1 a3178 2 InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); a3184 14 case Stmt::ObjCMessageExprClass: { const auto *ME = cast(E); if (const auto *ND = ME->getMethodDecl()) { if (const auto *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); const Expr *Arg = ME->getArg(ArgIndex - 1); return checkFormatStringExpr( S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); } } return SLCT_NotALiteral; } d3195 2 a3196 9 if (Offset.isNegative() || Offset > StrE->getLength()) { // TODO: It would be better to have an explicit warning for out of // bounds literals. return SLCT_NotALiteral; } FormatStringLiteral FStr(StrE, Offset.sextOrTrunc(64).getSExtValue()); CheckFormatString(S, &FStr, E, Args, HasVAListArg, format_idx, firstDataArg, Type, InFunctionCall, CallType, CheckedVarArgs, UncoveredArg); a3201 44 case Stmt::BinaryOperatorClass: { llvm::APSInt LResult; llvm::APSInt RResult; const BinaryOperator *BinOp = cast(E); // A string literal + an int offset is still a string literal. if (BinOp->isAdditiveOp()) { bool LIsInt = BinOp->getLHS()->EvaluateAsInt(LResult, S.Context); bool RIsInt = BinOp->getRHS()->EvaluateAsInt(RResult, S.Context); if (LIsInt != RIsInt) { BinaryOperatorKind BinOpKind = BinOp->getOpcode(); if (LIsInt) { if (BinOpKind == BO_Add) { sumOffsets(Offset, LResult, BinOpKind, RIsInt); E = BinOp->getRHS(); goto tryAgain; } } else { sumOffsets(Offset, RResult, BinOpKind, RIsInt); E = BinOp->getLHS(); goto tryAgain; } } } return SLCT_NotALiteral; } case Stmt::UnaryOperatorClass: { const UnaryOperator *UnaOp = cast(E); auto ASE = dyn_cast(UnaOp->getSubExpr()); if (UnaOp->getOpcode() == clang::UO_AddrOf && ASE) { llvm::APSInt IndexResult; if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context)) { sumOffsets(Offset, IndexResult, BO_Add, /*RHS is int*/ true); E = ASE->getBase(); goto tryAgain; } } return SLCT_NotALiteral; } d3210 9 a3218 10 .Case("scanf", FST_Scanf) .Cases("printf", "printf0", FST_Printf) .Cases("NSString", "CFString", FST_NSString) .Case("strftime", FST_Strftime) .Case("strfmon", FST_Strfmon) .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) .Case("freebsd_kprintf", FST_FreeBSDKPrintf) .Case("os_trace", FST_OSLog) .Case("os_log", FST_OSLog) .Default(FST_Unknown); a3263 1 UncoveredArgHandler UncoveredArg; d3267 1 a3267 11 /*IsFunctionCall*/ true, CheckedVarArgs, UncoveredArg, /*no string offset*/ llvm::APSInt(64, false) = 0); // Generate a diagnostic where an uncovered argument is detected. if (UncoveredArg.hasUncoveredArg()) { unsigned ArgIdx = UncoveredArg.getUncoveredArg() + firstDataArg; assert(ArgIdx < Args.size() && "ArgIdx outside bounds"); UncoveredArg.Diagnose(*this, /*IsFunctionCall*/true, Args[ArgIdx]); } d3281 2 a3282 2 SourceLocation FormatLoc = Args[format_idx]->getLocStart(); if (Type == FST_NSString && SourceMgr.isInSystemMacro(FormatLoc)) d3287 3 a3289 2 if (Args.size() == firstDataArg) { Diag(FormatLoc, diag::warn_format_nonliteral_noargs) d3291 4 a3294 18 switch (Type) { default: break; case FST_Kprintf: case FST_FreeBSDKPrintf: case FST_Printf: Diag(FormatLoc, diag::note_format_security_fixit) << FixItHint::CreateInsertion(FormatLoc, "\"%s\", "); break; case FST_NSString: Diag(FormatLoc, diag::note_format_security_fixit) << FixItHint::CreateInsertion(FormatLoc, "@@\"%@@\", "); break; } } else { Diag(FormatLoc, diag::warn_format_nonliteral) << OrigFormatExpr->getSourceRange(); } d3302 1 a3302 1 const FormatStringLiteral *FExpr; a3303 1 const Sema::FormatStringType FSType; a3315 2 UncoveredArgHandler &UncoveredArg; d3317 2 a3318 3 CheckFormatHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, const Sema::FormatStringType type, unsigned firstDataArg, d3320 11 a3330 10 ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType callType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FSType(type), FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), usesPositionalArgs(false), atFirstArg(true), inFunctionCall(inFunctionCall), CallType(callType), CheckedVarArgs(CheckedVarArgs), UncoveredArg(UncoveredArg) { d3365 6 a3370 5 static void EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, const PartialDiagnostic &PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); d3399 1 a3399 1 } // end anonymous namespace d3417 1 a3417 2 return FExpr->getLocationOfByte(x - Beg, S.getSourceManager(), S.getLangOpts(), S.Context.getTargetInfo()); d3561 2 a3562 2 // Does the number of data arguments exceed the number of // format conversions in the format string? d3569 8 a3576 3 UncoveredArg.Update(notCoveredArg, OrigFormatExpr); } else { UncoveredArg.setAllCovered(); a3580 23 void UncoveredArgHandler::Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr) { assert(hasUncoveredArg() && DiagnosticExprs.size() > 0 && "Invalid state"); if (!ArgExpr) return; SourceLocation Loc = ArgExpr->getLocStart(); if (S.getSourceManager().isInSystemMacro(Loc)) return; PartialDiagnostic PDiag = S.PDiag(diag::warn_printf_data_arg_not_used); for (auto E : DiagnosticExprs) PDiag << E->getSourceRange(); CheckFormatHandler::EmitFormatDiagnostic( S, IsFunctionCall, DiagnosticExprs[0], PDiag, Loc, /*IsStringLocation*/false, DiagnosticExprs[0]->getSourceRange()); } d3588 1 d3603 6 a3608 35 StringRef Specifier(csStart, csLen); // If the specifier in non-printable, it could be the first byte of a UTF-8 // sequence. In that case, print the UTF-8 code point. If not, print the byte // hex value. std::string CodePointStr; if (!llvm::sys::locale::isPrint(*csStart)) { llvm::UTF32 CodePoint; const llvm::UTF8 **B = reinterpret_cast(&csStart); const llvm::UTF8 *E = reinterpret_cast(csStart + csLen); llvm::ConversionResult Result = llvm::convertUTF8Sequence(B, E, &CodePoint, llvm::strictConversion); if (Result != llvm::conversionOK) { unsigned char FirstChar = *csStart; CodePoint = (llvm::UTF32)FirstChar; } llvm::raw_string_ostream OS(CodePointStr); if (CodePoint < 256) OS << "\\x" << llvm::format("%02x", CodePoint); else if (CodePoint <= 0xFFFF) OS << "\\u" << llvm::format("%04x", CodePoint); else OS << "\\U" << llvm::format("%08x", CodePoint); OS.flush(); Specifier = CodePointStr; } EmitFormatDiagnostic( S.PDiag(diag::warn_format_invalid_conversion) << Specifier, Loc, /*IsStringLocation*/ true, getSpecifierRange(startSpec, specifierLen)); a3634 4 // Since more arguments than conversion tokens are given, by extension // all arguments are covered, so mark this as so. UncoveredArg.setAllCovered(); d3677 8 a3684 5 template void CheckFormatHandler::EmitFormatDiagnostic( Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, const PartialDiagnostic &PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { d3706 1 d3708 5 a3712 5 CheckPrintfHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, const Sema::FormatStringType type, unsigned firstDataArg, unsigned numDataArgs, bool isObjC, const char *beg, bool hasVAListArg, ArrayRef Args, d3715 7 a3721 14 llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg) {} bool isObjCContext() const { return FSType == Sema::FST_NSString; } /// Returns true if '%@@' specifiers are allowed in the format string. bool allowsObjCArg() const { return FSType == Sema::FST_NSString || FSType == Sema::FST_OSLog || FSType == Sema::FST_OSTrace; } d3763 1 a3763 1 } // end anonymous namespace d3782 1 d3994 1 d4077 1 a4077 26 if (!allowsObjCArg() && CS.isObjCArg()) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // %P can only be used with os_log. if (FSType != Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::PArg) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // %n is not allowed with os_log. if (FSType == Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::nArg) { EmitFormatDiagnostic(S.PDiag(diag::warn_os_log_format_narg), getLocationOfByte(CS.getStart()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); return true; } // Only scalars are allowed for os_trace. if (FSType == Sema::FST_OSTrace && (CS.getKind() == ConversionSpecifier::PArg || CS.getKind() == ConversionSpecifier::sArg || CS.getKind() == ConversionSpecifier::ObjCObjArg)) { a4081 18 // Check for use of public/private annotation outside of os_log(). if (FSType != Sema::FST_OSLog) { if (FS.isPublic().isSet()) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) << "public", getLocationOfByte(FS.isPublic().getPosition()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } if (FS.isPrivate().isSet()) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) << "private", getLocationOfByte(FS.isPrivate().getPosition()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } } a4093 9 // Precision is mandatory for %P specifier. if (CS.getKind() == ConversionSpecifier::PArg && FS.getPrecision().getHowSpecified() == OptionalAmount::NotSpecified) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_P_no_precision), getLocationOfByte(startSpecifier), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } d4243 2 a4244 1 const analyze_printf::ArgType &AT = FS.getArgType(S.Context, isObjCContext()); d4299 1 a4299 1 if (isObjCContext() && d4340 2 a4341 2 bool success = fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, isObjCContext()); d4364 1 d4497 13 a4509 13 CheckScanfHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, Sema::FormatStringType type, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg) {} d4521 1 a4521 1 } // end anonymous namespace d4548 1 d4668 8 a4675 10 static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) { d4679 2 a4680 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_format_string_is_wide_literal), FExpr->getLocStart(), d4684 1 a4684 1 d4689 1 a4689 2 const ConstantArrayType *T = S.Context.getAsConstantArrayType(FExpr->getType()); d4700 2 a4701 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_printf_format_string_not_null_terminated), d4710 2 a4711 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_empty_format_string), FExpr->getLocStart(), d4715 8 a4722 10 if (Type == Sema::FST_Printf || Type == Sema::FST_NSString || Type == Sema::FST_FreeBSDKPrintf || Type == Sema::FST_OSLog || Type == Sema::FST_OSTrace) { CheckPrintfHandler H( S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, (Type == Sema::FST_NSString || Type == Sema::FST_OSTrace), Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); d4724 3 a4726 3 S.getLangOpts(), S.Context.getTargetInfo(), Type == Sema::FST_FreeBSDKPrintf)) d4728 5 a4732 5 } else if (Type == Sema::FST_Scanf) { CheckScanfHandler H(S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); d4734 2 a4735 2 S.getLangOpts(), S.Context.getTargetInfo())) d5047 1 a5047 3 template static bool IsStdFunction(const FunctionDecl *FDecl, const char (&Str)[StrLen]) { d5050 11 a5060 1 if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr(Str)) d5062 2 a5063 1 if (!FDecl->isInStdNamespace()) d5071 2 a5072 1 const FunctionDecl *FDecl) { d5077 1 a5077 1 bool IsStdAbs = IsStdFunction(FDecl, "abs"); d5148 1 a5148 63 } //===--- CHECK: Warn on use of std::max and unsigned zero. r---------------===// void Sema::CheckMaxUnsignedZero(const CallExpr *Call, const FunctionDecl *FDecl) { if (!Call || !FDecl) return; // Ignore template specializations and macros. if (!ActiveTemplateInstantiations.empty()) return; if (Call->getExprLoc().isMacroID()) return; // Only care about the one template argument, two function parameter std::max if (Call->getNumArgs() != 2) return; if (!IsStdFunction(FDecl, "max")) return; const auto * ArgList = FDecl->getTemplateSpecializationArgs(); if (!ArgList) return; if (ArgList->size() != 1) return; // Check that template type argument is unsigned integer. const auto& TA = ArgList->get(0); if (TA.getKind() != TemplateArgument::Type) return; QualType ArgType = TA.getAsType(); if (!ArgType->isUnsignedIntegerType()) return; // See if either argument is a literal zero. auto IsLiteralZeroArg = [](const Expr* E) -> bool { const auto *MTE = dyn_cast(E); if (!MTE) return false; const auto *Num = dyn_cast(MTE->GetTemporaryExpr()); if (!Num) return false; if (Num->getValue() != 0) return false; return true; }; const Expr *FirstArg = Call->getArg(0); const Expr *SecondArg = Call->getArg(1); const bool IsFirstArgZero = IsLiteralZeroArg(FirstArg); const bool IsSecondArgZero = IsLiteralZeroArg(SecondArg); // Only warn when exactly one argument is zero. if (IsFirstArgZero == IsSecondArgZero) return; SourceRange FirstRange = FirstArg->getSourceRange(); SourceRange SecondRange = SecondArg->getSourceRange(); SourceRange ZeroRange = IsFirstArgZero ? FirstRange : SecondRange; Diag(Call->getExprLoc(), diag::warn_max_unsigned_zero) << IsFirstArgZero << Call->getCallee()->getSourceRange() << ZeroRange; // Deduce what parts to remove so that "std::max(0u, foo)" becomes "(foo)". SourceRange RemovalRange; if (IsFirstArgZero) { RemovalRange = SourceRange(FirstRange.getBegin(), SecondRange.getBegin().getLocWithOffset(-1)); } else { RemovalRange = SourceRange(getLocForEndOfToken(FirstRange.getEnd()), SecondRange.getEnd()); } Diag(Call->getExprLoc(), diag::note_remove_max_call) << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()) << FixItHint::CreateRemoval(RemovalRange); d5194 1 a5194 1 if (!RD || RD->isInvalidDecl()) d5250 1 a5250 2 unsigned ExpectedNumArgs = (BId == Builtin::BIstrndup || BId == Builtin::BIbzero ? 2 : 3); d5254 1 a5254 1 unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIbzero || d5256 1 a5256 2 unsigned LenArg = (BId == Builtin::BIbzero || BId == Builtin::BIstrndup ? 1 : 2); a5267 7 // Although widely used, 'bzero' is not a standard function. Be more strict // with the argument types before allowing diagnostics and only allow the // form bzero(ptr, sizeof(...)). QualType FirstArgTy = Call->getArg(0)->IgnoreParenImpCasts()->getType(); if (BId == Builtin::BIbzero && !FirstArgTy->getAs()) return; d5401 1 d5616 4 a5619 6 static const Expr *EvalVal(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl); static const Expr *EvalAddr(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl); d5627 2 a5628 2 const Expr *stackE = nullptr; SmallVector refVars; a5641 6 // Parameters are initalized in the calling scope, so taking the address // of a parameter reference doesn't need a warning. for (auto *DRE : refVars) if (isa(DRE->getDecl())) return; d5656 1 a5656 2 if (const DeclRefExpr *DR = dyn_cast(stackE)) { // address of local var a5663 7 // If there is an LValue->RValue conversion, then the value of the // reference type is used, not the reference. if (auto *ICE = dyn_cast(RetValExp)) { if (ICE->getCastKind() == CK_LValueToRValue) { return; } } d5671 1 a5671 1 const VarDecl *VD = cast(refVars[i]->getDecl()); d5675 2 a5676 2 SourceRange range = (i < e - 1) ? refVars[i + 1]->getSourceRange() : stackE->getSourceRange(); d5708 2 a5709 3 static const Expr *EvalAddr(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl) { d5726 1 a5726 1 const DeclRefExpr *DR = cast(E); d5732 1 a5732 1 if (const VarDecl *V = dyn_cast(DR->getDecl())) d5748 1 a5748 1 const UnaryOperator *U = cast(E); d5752 2 a5753 1 return nullptr; d5759 1 a5759 1 const BinaryOperator *B = cast(E); d5765 1 a5765 1 const Expr *Base = B->getLHS(); d5769 1 a5769 2 if (!Base->getType()->isPointerType()) Base = B->getRHS(); d5771 1 a5771 1 assert(Base->getType()->isPointerType()); d5778 1 a5778 1 const ConditionalOperator *C = cast(E); d5782 1 a5782 1 if (const Expr *LHSExpr = C->getLHS()) { d5785 1 a5785 1 if (const Expr *LHS = EvalAddr(LHSExpr, refVars, ParentDecl)) d5818 1 a5818 1 const Expr* SubExpr = cast(E)->getSubExpr(); d5848 3 a5850 3 if (const Expr *Result = EvalAddr(cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) d5852 1 d5854 1 a5854 1 d5861 1 d5864 18 a5881 22 static const Expr *EvalVal(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl) { do { // We should only be called for evaluating non-pointer expressions, or // expressions with a pointer type that are not used as references but // instead // are l-values (e.g., DeclRefExpr with a pointer type). // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. E = E->IgnoreParens(); switch (E->getStmtClass()) { case Stmt::ImplicitCastExprClass: { const ImplicitCastExpr *IE = cast(E); if (IE->getValueKind() == VK_LValue) { E = IE->getSubExpr(); continue; } return nullptr; d5883 5 d5889 5 a5893 3 case Stmt::ExprWithCleanupsClass: return EvalVal(cast(E)->getSubExpr(), refVars, ParentDecl); d5895 3 a5897 5 case Stmt::DeclRefExprClass: { // When we hit a DeclRefExpr we are looking at code that refers to a // variable's name. If it's not a reference variable we check if it has // local storage within the function, and if so, return the expression. const DeclRefExpr *DR = cast(E); d5899 4 a5902 3 // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingVariableOrCapture()) return nullptr; d5904 2 a5905 3 if (const VarDecl *V = dyn_cast(DR->getDecl())) { // Check if it refers to itself, e.g. "int& i = i;". if (V == ParentDecl) d5908 6 a5913 11 if (V->hasLocalStorage()) { if (!V->getType()->isReferenceType()) return DR; // Reference variable, follow through to the expression that // it points to. if (V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalVal(V->getInit(), refVars, V); } d5916 1 d5918 11 a5928 2 return nullptr; } d5930 2 a5931 5 case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is Deref. All others don't resolve to a "name." This includes // handling all sorts of rvalues passed to a unary operator. const UnaryOperator *U = cast(E); d5933 6 a5938 2 if (U->getOpcode() == UO_Deref) return EvalAddr(U->getSubExpr(), refVars, ParentDecl); d5940 4 a5943 2 return nullptr; } d5945 4 a5948 9 case Stmt::ArraySubscriptExprClass: { // Array subscripts are potential references to data on the stack. We // retrieve the DeclRefExpr* for the array variable if it indeed // has local storage. const auto *ASE = cast(E); if (ASE->isTypeDependent()) return nullptr; return EvalAddr(ASE->getBase(), refVars, ParentDecl); } d5950 6 a5955 3 case Stmt::OMPArraySectionExprClass: { return EvalAddr(cast(E)->getBase(), refVars, ParentDecl); d5958 3 a5960 12 case Stmt::ConditionalOperatorClass: { // For conditional operators we need to see if either the LHS or RHS are // non-NULL Expr's. If one is non-NULL, we return it. const ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (const Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (const Expr *LHS = EvalVal(LHSExpr, refVars, ParentDecl)) return LHS; } d5962 2 a5963 3 // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return nullptr; d5965 3 a5967 2 return EvalVal(C->getRHS(), refVars, ParentDecl); } d5969 3 a5971 3 // Accesses to members are potential references to data on the stack. case Stmt::MemberExprClass: { const MemberExpr *M = cast(E); d5973 4 a5976 3 // Check for indirect access. We only want direct field accesses. if (M->isArrow()) return nullptr; d5978 2 a5979 5 // Check whether the member type is itself a reference, in which case // we're not going to refer to the member, but to what the member refers // to. if (M->getMemberDecl()->getType()->isReferenceType()) return nullptr; d5981 7 a5987 2 return EvalVal(M->getBase(), refVars, ParentDecl); } d5989 4 a5992 5 case Stmt::MaterializeTemporaryExprClass: if (const Expr *Result = EvalVal(cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; d5995 4 a5998 10 default: // Check that we don't return or take the address of a reference to a // temporary. This is only useful in C++. if (!E->isTypeDependent() && E->isRValue()) return E; // Everything else: we simply don't reason about them. return nullptr; } } while (true); d6050 1 d6176 2 a6177 1 IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { d6189 2 a6190 2 IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { d6218 1 a6218 1 QualType GetExprType(const Expr *E) { d6229 1 a6229 1 IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) { d6240 1 a6240 1 if (const auto *CE = dyn_cast(E)) { d6267 1 a6267 1 if (const auto *CO = dyn_cast(E)) { d6281 1 a6281 1 if (const auto *BO = dyn_cast(E)) { d6421 1 a6421 1 if (const auto *UO = dyn_cast(E)) { d6437 1 a6437 1 if (const auto *OVE = dyn_cast(E)) d6440 1 a6440 1 if (const auto *BitField = E->getSourceBitField()) d6447 1 a6447 1 IntRange GetExprRange(ASTContext &C, const Expr *E) { d6454 3 a6456 3 bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d6471 3 a6473 3 bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d6489 1 a6489 1 void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); d6491 1 a6491 1 bool IsZero(Sema &S, Expr *E) { d6506 1 a6506 1 bool HasEnumType(Expr *E) { d6518 1 a6518 1 void CheckTrivialUnsignedComparison(Sema &S, BinaryOperator *E) { d6546 4 a6549 3 void DiagnoseOutOfRangeComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, const llvm::APSInt &Value, bool RhsConstant) { d6757 1 a6757 1 void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { d6765 1 a6765 1 void AnalyzeComparison(Sema &S, BinaryOperator *E) { d6866 2 a6867 2 bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { a6872 18 QualType BitfieldType = Bitfield->getType(); if (BitfieldType->isBooleanType()) return false; if (BitfieldType->isEnumeralType()) { EnumDecl *BitfieldEnumDecl = BitfieldType->getAs()->getDecl(); // If the underlying enum type was not explicitly specified as an unsigned // type and the enum contain only positive values, MSVC++ will cause an // inconsistency by storing this as a signed type. if (S.getLangOpts().CPlusPlus11 && !BitfieldEnumDecl->getIntegerTypeSourceInfo() && BitfieldEnumDecl->getNumPositiveBits() > 0 && BitfieldEnumDecl->getNumNegativeBits() == 0) { S.Diag(InitLoc, diag::warn_no_underlying_type_specified_for_enum_bitfield) << BitfieldEnumDecl->getNameAsString(); } } a6891 5 if (!Value.isSigned() || Value.isNegative()) if (UnaryOperator *UO = dyn_cast(OriginalInit)) if (UO->getOpcode() == UO_Minus || UO->getOpcode() == UO_Not) OriginalWidth = Value.getMinSignedBits(); d6897 1 a6897 1 TruncatedValue.setIsSigned(BitfieldType->isSignedIntegerType()); d6921 1 a6921 1 void AnalyzeAssignment(Sema &S, BinaryOperator *E) { d6940 3 a6942 3 void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d6955 3 a6957 2 void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d6961 5 a6965 25 /// Diagnose an implicit cast from a floating point value to an integer value. void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext) { const bool IsBool = T->isSpecificBuiltinType(BuiltinType::Bool); const bool PruneWarnings = !S.ActiveTemplateInstantiations.empty(); Expr *InnerE = E->IgnoreParenImpCasts(); // We also want to warn on, e.g., "int i = -1.234" if (UnaryOperator *UOp = dyn_cast(InnerE)) if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); const bool IsLiteral = isa(E) || isa(InnerE); llvm::APFloat Value(0.0); bool IsConstant = E->EvaluateAsFloat(Value, S.Context, Expr::SE_AllowSideEffects); if (!IsConstant) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } d6967 1 a6967 1 d6970 4 a6973 35 if (Value.convertToInteger(IntegerValue, llvm::APFloat::rmTowardZero, &isExact) == llvm::APFloat::opOK && isExact) { if (IsLiteral) return; return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } unsigned DiagID = 0; if (IsLiteral) { // Warn on floating point literal to integer. DiagID = diag::warn_impcast_literal_float_to_integer; } else if (IntegerValue == 0) { if (Value.isZero()) { // Skip -0.0 to 0 conversion. return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } // Warn on non-zero to zero conversion. DiagID = diag::warn_impcast_float_to_integer_zero; } else { if (IntegerValue.isUnsigned()) { if (!IntegerValue.isMaxValue()) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } } else { // IntegerValue.isSigned() if (!IntegerValue.isMaxSignedValue() && !IntegerValue.isMinSignedValue()) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } } // Warn on evaluatable floating point expression to integer conversion. DiagID = diag::warn_impcast_float_to_integer; } d6986 1 a6986 1 if (IsBool) d6991 3 a6993 11 if (PruneWarnings) { S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(DiagID) << E->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext)); } else { S.Diag(E->getExprLoc(), DiagID) << E->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext); } d7005 1 a7005 1 bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { d7045 2 a7046 1 void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { a7067 9 // Venture through the macro stacks to get to the source of macro arguments. // The new location is a better location than the complete location that was // passed in. while (S.SourceMgr.isMacroArgExpansion(Loc)) Loc = S.SourceMgr.getImmediateMacroCallerLoc(Loc); while (S.SourceMgr.isMacroArgExpansion(CC)) CC = S.SourceMgr.getImmediateMacroCallerLoc(CC); d7069 7 a7075 5 if (NullKind == Expr::NPCK_GNUNull && Loc.isMacroID()) { StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics( Loc, S.SourceMgr, S.getLangOpts()); if (MacroName == "NULL") Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; d7088 4 a7091 4 void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); d7095 4 a7098 2 void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { d7127 2 a7128 2 void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { d7155 3 a7157 2 void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { a7182 26 // Helper function to filter out cases for constant width constant conversion. // Don't warn on char array initialization or for non-decimal values. bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { // If initializing from a constant, and the constant starts with '0', // then it is a binary, octal, or hexadecimal. Allow these constants // to fill all the bits, even if there is a sign change. if (auto *IntLit = dyn_cast(E->IgnoreParenImpCasts())) { const char FirstLiteralCharacter = S.getSourceManager().getCharacterData(IntLit->getLocStart())[0]; if (FirstLiteralCharacter == '0') return false; } // If the CC location points to a '{', and the type is char, then assume // assume it is an array initialization. if (CC.isValid() && T->isCharType()) { const char FirstContextCharacter = S.getSourceManager().getCharacterData(CC)[0]; if (FirstContextCharacter == '{') return false; } return true; } d7287 1 d7299 1 a7299 1 // If the target is integral, always warn. d7303 6 d7310 5 a7314 1 DiagnoseFloatingImpCast(S, E, T, CC); a7345 2 S.DiscardMisalignedMemberAddress(Target, E); d7361 1 a7361 1 if (E->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) { a7385 25 if (TargetRange.Width == SourceRange.Width && !TargetRange.NonNegative && SourceRange.NonNegative && Source->isSignedIntegerType()) { // Warn when doing a signed to signed conversion, warn if the positive // source value is exactly the width of the target type, which will // cause a negative value to be stored. llvm::APSInt Value; if (E->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects) && !S.SourceMgr.isInSystemMacro(CC)) { if (isSameWidthConstantConversion(S, E, T, CC)) { std::string PrettySourceValue = Value.toString(10); std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); S.DiagRuntimeBehavior( E->getExprLoc(), E, S.PDiag(diag::warn_impcast_integer_precision_constant) << PrettySourceValue << PrettyTargetValue << E->getType() << T << E->getSourceRange() << clang::SourceRange(CC)); return; } } // Fall through for non-constants to give a sign conversion warning. } d7389 1 d7432 2 d7449 1 d7482 1 a7482 1 void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { a7585 15 /// Diagnose integer type and any valid implicit convertion to it. static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntT) { // Taking into account implicit conversions, // allow any integer. if (!E->getType()->isIntegerType()) { S.Diag(E->getLocStart(), diag::err_opencl_enqueue_kernel_invalid_local_size_type); return true; } // Potentially emit standard warnings for implicit conversions if enabled // using -Wconversion. CheckImplicitConversion(S, E, IntT, E->getLocStart()); return false; } d7589 1 a7589 1 const PartialDiagnostic &PD) { d7684 1 a7684 2 auto ComplainAboutNonnullParamOrCall = [&](const Attr *NonnullAttr) { bool IsParam = isa(NonnullAttr); a7691 1 Diag(NonnullAttr->getLocation(), diag::note_declared_nonnull) << IsParam; d7697 2 a7698 2 if (const Attr *A = Callee->getAttr()) { ComplainAboutNonnullParamOrCall(A); d7720 2 a7721 2 if (const Attr *A = PV->getAttr()) { ComplainAboutNonnullParamOrCall(A); d7726 1 a7726 1 auto ParamIter = llvm::find(FD->parameters(), PV); d7732 1 a7732 1 ComplainAboutNonnullParamOrCall(NonNull); d7738 1 a7738 1 ComplainAboutNonnullParamOrCall(NonNull); d7820 1 d7855 6 a7860 14 // Use a work list to deal with nested struct initializers. SmallVector Exprs(1, E); do { Expr *E = Exprs.pop_back_val(); if (isa(E->IgnoreParenCasts())) { E->IgnoreParenCasts()->EvaluateForOverflow(Context); continue; } if (auto InitList = dyn_cast(E)) Exprs.append(InitList->inits().begin(), InitList->inits().end()); } while (!Exprs.empty()); d7878 1 a7878 1 unsigned Merged : 1; d7990 3 a7992 2 for (auto &M : llvm::reverse(ModAsSideEffect)) { UsageInfo &U = Self.UsageMap[M.first]; d7994 2 a7995 2 Self.addUsage(U, M.first, SideEffectUsage.Use, UK_ModAsValue); SideEffectUsage = M.second; a8197 1 d8347 1 a8347 1 } // end anonymous namespace d8361 1 a8361 2 if (!E->isInstantiationDependent()) CheckUnsequencedOperations(E); a8363 1 DiagnoseMisalignedMembers(); d8406 2 a8407 1 bool Sema::CheckParmsForFunctionDef(ArrayRef Parameters, d8410 3 a8412 1 for (ParmVarDecl *Param : Parameters) { a8476 13 /// A helper function to get the alignment of a Decl referred to by DeclRefExpr /// or MemberExpr. static CharUnits getDeclAlign(Expr *E, CharUnits TypeAlign, ASTContext &Context) { if (const auto *DRE = dyn_cast(E)) return Context.getDeclAlign(DRE->getDecl()); if (const auto *ME = dyn_cast(E)) return Context.getDeclAlign(ME->getMemberDecl()); return TypeAlign; } a8510 9 if (auto *CE = dyn_cast(Op)) { if (CE->getCastKind() == CK_ArrayToPointerDecay) SrcAlign = getDeclAlign(CE->getSubExpr(), SrcAlign, Context); } else if (auto *UO = dyn_cast(Op)) { if (UO->getOpcode() == UO_AddrOf) SrcAlign = getDeclAlign(UO->getSubExpr(), SrcAlign, Context); } d8520 9 d8534 1 a8534 1 static bool IsTailPaddedMemberArray(Sema &S, const llvm::APInt &Size, d8583 1 a8583 2 const Type *EffectiveType = BaseExpr->getType()->getPointeeOrArrayElementType(); d8607 1 a8607 1 const Type *BaseType = BaseExpr->getType()->getPointeeOrArrayElementType(); d8757 1 a8757 1 } // end anonymous namespace d8903 1 a8903 1 } // end anonymous namespace d9139 1 d9343 1 a9343 1 } // end anonymous namespace d9439 1 d9678 1 a9678 1 } // end anonymous namespace d9809 1 a9809 1 } // end anonymous namespace d9842 1 a9842 1 } // end anonymous namespace a9921 148 void Sema::AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, CharUnits Alignment) { MisalignedMembers.emplace_back(E, RD, MD, Alignment); } void Sema::DiagnoseMisalignedMembers() { for (MisalignedMember &m : MisalignedMembers) { const NamedDecl *ND = m.RD; if (ND->getName().empty()) { if (const TypedefNameDecl *TD = m.RD->getTypedefNameForAnonDecl()) ND = TD; } Diag(m.E->getLocStart(), diag::warn_taking_address_of_packed_member) << m.MD << ND << m.E->getSourceRange(); } MisalignedMembers.clear(); } void Sema::DiscardMisalignedMemberAddress(const Type *T, Expr *E) { E = E->IgnoreParens(); if (!T->isPointerType() && !T->isIntegerType()) return; if (isa(E) && cast(E)->getOpcode() == UO_AddrOf) { auto *Op = cast(E)->getSubExpr()->IgnoreParens(); if (isa(Op)) { auto MA = std::find(MisalignedMembers.begin(), MisalignedMembers.end(), MisalignedMember(Op)); if (MA != MisalignedMembers.end() && (T->isIntegerType() || (T->isPointerType() && Context.getTypeAlignInChars(T->getPointeeType()) <= MA->Alignment))) MisalignedMembers.erase(MA); } } } void Sema::RefersToMemberWithReducedAlignment( Expr *E, llvm::function_ref Action) { const auto *ME = dyn_cast(E); if (!ME) return; // For a chain of MemberExpr like "a.b.c.d" this list // will keep FieldDecl's like [d, c, b]. SmallVector ReverseMemberChain; const MemberExpr *TopME = nullptr; bool AnyIsPacked = false; do { QualType BaseType = ME->getBase()->getType(); if (ME->isArrow()) BaseType = BaseType->getPointeeType(); RecordDecl *RD = BaseType->getAs()->getDecl(); ValueDecl *MD = ME->getMemberDecl(); auto *FD = dyn_cast(MD); // We do not care about non-data members. if (!FD || FD->isInvalidDecl()) return; AnyIsPacked = AnyIsPacked || (RD->hasAttr() || MD->hasAttr()); ReverseMemberChain.push_back(FD); TopME = ME; ME = dyn_cast(ME->getBase()->IgnoreParens()); } while (ME); assert(TopME && "We did not compute a topmost MemberExpr!"); // Not the scope of this diagnostic. if (!AnyIsPacked) return; const Expr *TopBase = TopME->getBase()->IgnoreParenImpCasts(); const auto *DRE = dyn_cast(TopBase); // TODO: The innermost base of the member expression may be too complicated. // For now, just disregard these cases. This is left for future // improvement. if (!DRE && !isa(TopBase)) return; // Alignment expected by the whole expression. CharUnits ExpectedAlignment = Context.getTypeAlignInChars(E->getType()); // No need to do anything else with this case. if (ExpectedAlignment.isOne()) return; // Synthesize offset of the whole access. CharUnits Offset; for (auto I = ReverseMemberChain.rbegin(); I != ReverseMemberChain.rend(); I++) { Offset += Context.toCharUnitsFromBits(Context.getFieldOffset(*I)); } // Compute the CompleteObjectAlignment as the alignment of the whole chain. CharUnits CompleteObjectAlignment = Context.getTypeAlignInChars( ReverseMemberChain.back()->getParent()->getTypeForDecl()); // The base expression of the innermost MemberExpr may give // stronger guarantees than the class containing the member. if (DRE && !TopME->isArrow()) { const ValueDecl *VD = DRE->getDecl(); if (!VD->getType()->isReferenceType()) CompleteObjectAlignment = std::max(CompleteObjectAlignment, Context.getDeclAlign(VD)); } // Check if the synthesized offset fulfills the alignment. if (Offset % ExpectedAlignment != 0 || // It may fulfill the offset it but the effective alignment may still be // lower than the expected expression alignment. CompleteObjectAlignment < ExpectedAlignment) { // If this happens, we want to determine a sensible culprit of this. // Intuitively, watching the chain of member expressions from right to // left, we start with the required alignment (as required by the field // type) but some packed attribute in that chain has reduced the alignment. // It may happen that another packed structure increases it again. But if // we are here such increase has not been enough. So pointing the first // FieldDecl that either is packed or else its RecordDecl is, // seems reasonable. FieldDecl *FD = nullptr; CharUnits Alignment; for (FieldDecl *FDI : ReverseMemberChain) { if (FDI->hasAttr() || FDI->getParent()->hasAttr()) { FD = FDI; Alignment = std::min( Context.getTypeAlignInChars(FD->getType()), Context.getTypeAlignInChars(FD->getParent()->getTypeForDecl())); break; } } assert(FD && "We did not find a packed FieldDecl!"); Action(E, FD->getParent(), FD, Alignment); } } void Sema::CheckAddressOfPackedMember(Expr *rhs) { using namespace std::placeholders; RefersToMemberWithReducedAlignment( rhs, std::bind(&Sema::AddPotentialMisalignedMembers, std::ref(*this), _1, _2, _3, _4)); } @ 1.1.1.11 log @Import Clang pre-4.0.0 r291444. @ text @d15 1 a35 1 #include "clang/Sema/SemaInternal.h" a39 2 #include "llvm/Support/Format.h" #include "llvm/Support/Locale.h" d41 1 a41 1 a260 467 static inline bool isBlockPointer(Expr *Arg) { return Arg->getType()->isBlockPointerType(); } /// OpenCL C v2.0, s6.13.17.2 - Checks that the block parameters are all local /// void*, which is a requirement of device side enqueue. static bool checkOpenCLBlockArgs(Sema &S, Expr *BlockArg) { const BlockPointerType *BPT = cast(BlockArg->getType().getCanonicalType()); ArrayRef Params = BPT->getPointeeType()->getAs()->getParamTypes(); unsigned ArgCounter = 0; bool IllegalParams = false; // Iterate through the block parameters until either one is found that is not // a local void*, or the block is valid. for (ArrayRef::iterator I = Params.begin(), E = Params.end(); I != E; ++I, ++ArgCounter) { if (!(*I)->isPointerType() || !(*I)->getPointeeType()->isVoidType() || (*I)->getPointeeType().getQualifiers().getAddressSpace() != LangAS::opencl_local) { // Get the location of the error. If a block literal has been passed // (BlockExpr) then we can point straight to the offending argument, // else we just point to the variable reference. SourceLocation ErrorLoc; if (isa(BlockArg)) { BlockDecl *BD = cast(BlockArg)->getBlockDecl(); ErrorLoc = BD->getParamDecl(ArgCounter)->getLocStart(); } else if (isa(BlockArg)) { ErrorLoc = cast(BlockArg)->getLocStart(); } S.Diag(ErrorLoc, diag::err_opencl_enqueue_kernel_blocks_non_local_void_args); IllegalParams = true; } } return IllegalParams; } /// OpenCL C v2.0, s6.13.17.6 - Check the argument to the /// get_kernel_work_group_size /// and get_kernel_preferred_work_group_size_multiple builtin functions. static bool SemaOpenCLBuiltinKernelWorkGroupSize(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 1)) return true; Expr *BlockArg = TheCall->getArg(0); if (!isBlockPointer(BlockArg)) { S.Diag(BlockArg->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } return checkOpenCLBlockArgs(S, BlockArg); } /// Diagnose integer type and any valid implicit convertion to it. static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntType); static bool checkOpenCLEnqueueLocalSizeArgs(Sema &S, CallExpr *TheCall, unsigned Start, unsigned End) { bool IllegalParams = false; for (unsigned I = Start; I <= End; ++I) IllegalParams |= checkOpenCLEnqueueIntType(S, TheCall->getArg(I), S.Context.getSizeType()); return IllegalParams; } /// OpenCL v2.0, s6.13.17.1 - Check that sizes are provided for all /// 'local void*' parameter of passed block. static bool checkOpenCLEnqueueVariadicArgs(Sema &S, CallExpr *TheCall, Expr *BlockArg, unsigned NumNonVarArgs) { const BlockPointerType *BPT = cast(BlockArg->getType().getCanonicalType()); unsigned NumBlockParams = BPT->getPointeeType()->getAs()->getNumParams(); unsigned TotalNumArgs = TheCall->getNumArgs(); // For each argument passed to the block, a corresponding uint needs to // be passed to describe the size of the local memory. if (TotalNumArgs != NumBlockParams + NumNonVarArgs) { S.Diag(TheCall->getLocStart(), diag::err_opencl_enqueue_kernel_local_size_args); return true; } // Check that the sizes of the local memory are specified by integers. return checkOpenCLEnqueueLocalSizeArgs(S, TheCall, NumNonVarArgs, TotalNumArgs - 1); } /// OpenCL C v2.0, s6.13.17 - Enqueue kernel function contains four different /// overload formats specified in Table 6.13.17.1. /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// void (^block)(void)) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// uint num_events_in_wait_list, /// clk_event_t *event_wait_list, /// clk_event_t *event_ret, /// void (^block)(void)) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// void (^block)(local void*, ...), /// uint size0, ...) /// int enqueue_kernel(queue_t queue, /// kernel_enqueue_flags_t flags, /// const ndrange_t ndrange, /// uint num_events_in_wait_list, /// clk_event_t *event_wait_list, /// clk_event_t *event_ret, /// void (^block)(local void*, ...), /// uint size0, ...) static bool SemaOpenCLBuiltinEnqueueKernel(Sema &S, CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs < 4) { S.Diag(TheCall->getLocStart(), diag::err_typecheck_call_too_few_args); return true; } Expr *Arg0 = TheCall->getArg(0); Expr *Arg1 = TheCall->getArg(1); Expr *Arg2 = TheCall->getArg(2); Expr *Arg3 = TheCall->getArg(3); // First argument always needs to be a queue_t type. if (!Arg0->getType()->isQueueT()) { S.Diag(TheCall->getArg(0)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.OCLQueueTy; return true; } // Second argument always needs to be a kernel_enqueue_flags_t enum value. if (!Arg1->getType()->isIntegerType()) { S.Diag(TheCall->getArg(1)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "'kernel_enqueue_flags_t' (i.e. uint)"; return true; } // Third argument is always an ndrange_t type. if (!Arg2->getType()->isNDRangeT()) { S.Diag(TheCall->getArg(2)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.OCLNDRangeTy; return true; } // With four arguments, there is only one form that the function could be // called in: no events and no variable arguments. if (NumArgs == 4) { // check that the last argument is the right block type. if (!isBlockPointer(Arg3)) { S.Diag(Arg3->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } // we have a block type, check the prototype const BlockPointerType *BPT = cast(Arg3->getType().getCanonicalType()); if (BPT->getPointeeType()->getAs()->getNumParams() > 0) { S.Diag(Arg3->getLocStart(), diag::err_opencl_enqueue_kernel_blocks_no_args); return true; } return false; } // we can have block + varargs. if (isBlockPointer(Arg3)) return (checkOpenCLBlockArgs(S, Arg3) || checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg3, 4)); // last two cases with either exactly 7 args or 7 args and varargs. if (NumArgs >= 7) { // check common block argument. Expr *Arg6 = TheCall->getArg(6); if (!isBlockPointer(Arg6)) { S.Diag(Arg6->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "block"; return true; } if (checkOpenCLBlockArgs(S, Arg6)) return true; // Forth argument has to be any integer type. if (!Arg3->getType()->isIntegerType()) { S.Diag(TheCall->getArg(3)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << "integer"; return true; } // check remaining common arguments. Expr *Arg4 = TheCall->getArg(4); Expr *Arg5 = TheCall->getArg(5); // Fifth argument is always passed as a pointer to clk_event_t. if (!Arg4->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) && !Arg4->getType()->getPointeeOrArrayElementType()->isClkEventT()) { S.Diag(TheCall->getArg(4)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.getPointerType(S.Context.OCLClkEventTy); return true; } // Sixth argument is always passed as a pointer to clk_event_t. if (!Arg5->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) && !(Arg5->getType()->isPointerType() && Arg5->getType()->getPointeeType()->isClkEventT())) { S.Diag(TheCall->getArg(5)->getLocStart(), diag::err_opencl_enqueue_kernel_expected_type) << S.Context.getPointerType(S.Context.OCLClkEventTy); return true; } if (NumArgs == 7) return false; return checkOpenCLEnqueueVariadicArgs(S, TheCall, Arg6, 7); } // None of the specific case has been detected, give generic error S.Diag(TheCall->getLocStart(), diag::err_opencl_enqueue_kernel_incorrect_args); return true; } /// Returns OpenCL access qual. static OpenCLAccessAttr *getOpenCLArgAccess(const Decl *D) { return D->getAttr(); } /// Returns true if pipe element type is different from the pointer. static bool checkOpenCLPipeArg(Sema &S, CallExpr *Call) { const Expr *Arg0 = Call->getArg(0); // First argument type should always be pipe. if (!Arg0->getType()->isPipeType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_first_arg) << Call->getDirectCallee() << Arg0->getSourceRange(); return true; } OpenCLAccessAttr *AccessQual = getOpenCLArgAccess(cast(Arg0)->getDecl()); // Validates the access qualifier is compatible with the call. // OpenCL v2.0 s6.13.16 - The access qualifiers for pipe should only be // read_only and write_only, and assumed to be read_only if no qualifier is // specified. switch (Call->getDirectCallee()->getBuiltinID()) { case Builtin::BIread_pipe: case Builtin::BIreserve_read_pipe: case Builtin::BIcommit_read_pipe: case Builtin::BIwork_group_reserve_read_pipe: case Builtin::BIsub_group_reserve_read_pipe: case Builtin::BIwork_group_commit_read_pipe: case Builtin::BIsub_group_commit_read_pipe: if (!(!AccessQual || AccessQual->isReadOnly())) { S.Diag(Arg0->getLocStart(), diag::err_opencl_builtin_pipe_invalid_access_modifier) << "read_only" << Arg0->getSourceRange(); return true; } break; case Builtin::BIwrite_pipe: case Builtin::BIreserve_write_pipe: case Builtin::BIcommit_write_pipe: case Builtin::BIwork_group_reserve_write_pipe: case Builtin::BIsub_group_reserve_write_pipe: case Builtin::BIwork_group_commit_write_pipe: case Builtin::BIsub_group_commit_write_pipe: if (!(AccessQual && AccessQual->isWriteOnly())) { S.Diag(Arg0->getLocStart(), diag::err_opencl_builtin_pipe_invalid_access_modifier) << "write_only" << Arg0->getSourceRange(); return true; } break; default: break; } return false; } /// Returns true if pipe element type is different from the pointer. static bool checkOpenCLPipePacketType(Sema &S, CallExpr *Call, unsigned Idx) { const Expr *Arg0 = Call->getArg(0); const Expr *ArgIdx = Call->getArg(Idx); const PipeType *PipeTy = cast(Arg0->getType()); const QualType EltTy = PipeTy->getElementType(); const PointerType *ArgTy = ArgIdx->getType()->getAs(); // The Idx argument should be a pointer and the type of the pointer and // the type of pipe element should also be the same. if (!ArgTy || !S.Context.hasSameType( EltTy, ArgTy->getPointeeType()->getCanonicalTypeInternal())) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.getPointerType(EltTy) << ArgIdx->getType() << ArgIdx->getSourceRange(); return true; } return false; } // \brief Performs semantic analysis for the read/write_pipe call. // \param S Reference to the semantic analyzer. // \param Call A pointer to the builtin call. // \return True if a semantic error has been found, false otherwise. static bool SemaBuiltinRWPipe(Sema &S, CallExpr *Call) { // OpenCL v2.0 s6.13.16.2 - The built-in read/write // functions have two forms. switch (Call->getNumArgs()) { case 2: { if (checkOpenCLPipeArg(S, Call)) return true; // The call with 2 arguments should be // read/write_pipe(pipe T, T*). // Check packet type T. if (checkOpenCLPipePacketType(S, Call, 1)) return true; } break; case 4: { if (checkOpenCLPipeArg(S, Call)) return true; // The call with 4 arguments should be // read/write_pipe(pipe T, reserve_id_t, uint, T*). // Check reserve_id_t. if (!Call->getArg(1)->getType()->isReserveIDT()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.OCLReserveIDTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } // Check the index. const Expr *Arg2 = Call->getArg(2); if (!Arg2->getType()->isIntegerType() && !Arg2->getType()->isUnsignedIntegerType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.UnsignedIntTy << Arg2->getType() << Arg2->getSourceRange(); return true; } // Check packet type T. if (checkOpenCLPipePacketType(S, Call, 3)) return true; } break; default: S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_arg_num) << Call->getDirectCallee() << Call->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on the {work_group_/sub_group_ // /_}reserve_{read/write}_pipe // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinReserveRWPipe(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 2)) return true; if (checkOpenCLPipeArg(S, Call)) return true; // Check the reserve size. if (!Call->getArg(1)->getType()->isIntegerType() && !Call->getArg(1)->getType()->isUnsignedIntegerType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.UnsignedIntTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on {work_group_/sub_group_ // /_}commit_{read/write}_pipe // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinCommitRWPipe(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 2)) return true; if (checkOpenCLPipeArg(S, Call)) return true; // Check reserve_id_t. if (!Call->getArg(1)->getType()->isReserveIDT()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_invalid_arg) << Call->getDirectCallee() << S.Context.OCLReserveIDTy << Call->getArg(1)->getType() << Call->getArg(1)->getSourceRange(); return true; } return false; } // \brief Performs a semantic analysis on the call to built-in Pipe // Query Functions. // \param S Reference to the semantic analyzer. // \param Call The call to the builtin function to be analyzed. // \return True if a semantic error was found, false otherwise. static bool SemaBuiltinPipePackets(Sema &S, CallExpr *Call) { if (checkArgCount(S, Call, 1)) return true; if (!Call->getArg(0)->getType()->isPipeType()) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_pipe_first_arg) << Call->getDirectCallee() << Call->getArg(0)->getSourceRange(); return true; } return false; } // \brief OpenCL v2.0 s6.13.9 - Address space qualifier functions. // \brief Performs semantic analysis for the to_global/local/private call. // \param S Reference to the semantic analyzer. // \param BuiltinID ID of the builtin function. // \param Call A pointer to the builtin call. // \return True if a semantic error has been found, false otherwise. static bool SemaOpenCLBuiltinToAddr(Sema &S, unsigned BuiltinID, CallExpr *Call) { if (Call->getNumArgs() != 1) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_to_addr_arg_num) << Call->getDirectCallee() << Call->getSourceRange(); return true; } auto RT = Call->getArg(0)->getType(); if (!RT->isPointerType() || RT->getPointeeType() .getAddressSpace() == LangAS::opencl_constant) { S.Diag(Call->getLocStart(), diag::err_opencl_builtin_to_addr_invalid_arg) << Call->getArg(0) << Call->getDirectCallee() << Call->getSourceRange(); return true; } RT = RT->getPointeeType(); auto Qual = RT.getQualifiers(); switch (BuiltinID) { case Builtin::BIto_global: Qual.setAddressSpace(LangAS::opencl_global); break; case Builtin::BIto_local: Qual.setAddressSpace(LangAS::opencl_local); break; default: Qual.removeAddressSpace(); } Call->setType(S.Context.getPointerType(S.Context.getQualifiedType( RT.getUnqualifiedType(), Qual))); return false; } a338 4 case Builtin::BI__builtin_alloca_with_align: if (SemaBuiltinAllocaWithAlign(TheCall)) return ExprError(); break; d533 1 d538 1 d540 1 a540 1 case Builtin::BI_exception_code: d545 1 d547 1 a547 1 case Builtin::BI_exception_info: d552 2 d566 1 a566 59 // OpenCL v2.0, s6.13.16 - Pipe functions case Builtin::BIread_pipe: case Builtin::BIwrite_pipe: // Since those two functions are declared with var args, we need a semantic // check for the argument. if (SemaBuiltinRWPipe(*this, TheCall)) return ExprError(); TheCall->setType(Context.IntTy); break; case Builtin::BIreserve_read_pipe: case Builtin::BIreserve_write_pipe: case Builtin::BIwork_group_reserve_read_pipe: case Builtin::BIwork_group_reserve_write_pipe: case Builtin::BIsub_group_reserve_read_pipe: case Builtin::BIsub_group_reserve_write_pipe: if (SemaBuiltinReserveRWPipe(*this, TheCall)) return ExprError(); // Since return type of reserve_read/write_pipe built-in function is // reserve_id_t, which is not defined in the builtin def file , we used int // as return type and need to override the return type of these functions. TheCall->setType(Context.OCLReserveIDTy); break; case Builtin::BIcommit_read_pipe: case Builtin::BIcommit_write_pipe: case Builtin::BIwork_group_commit_read_pipe: case Builtin::BIwork_group_commit_write_pipe: case Builtin::BIsub_group_commit_read_pipe: case Builtin::BIsub_group_commit_write_pipe: if (SemaBuiltinCommitRWPipe(*this, TheCall)) return ExprError(); break; case Builtin::BIget_pipe_num_packets: case Builtin::BIget_pipe_max_packets: if (SemaBuiltinPipePackets(*this, TheCall)) return ExprError(); TheCall->setType(Context.UnsignedIntTy); break; case Builtin::BIto_global: case Builtin::BIto_local: case Builtin::BIto_private: if (SemaOpenCLBuiltinToAddr(*this, BuiltinID, TheCall)) return ExprError(); break; // OpenCL v2.0, s6.13.17 - Enqueue kernel functions. case Builtin::BIenqueue_kernel: if (SemaOpenCLBuiltinEnqueueKernel(*this, TheCall)) return ExprError(); break; case Builtin::BIget_kernel_work_group_size: case Builtin::BIget_kernel_preferred_work_group_size_multiple: if (SemaOpenCLBuiltinKernelWorkGroupSize(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_os_log_format: case Builtin::BI__builtin_os_log_format_buffer_size: if (SemaBuiltinOSLogFormat(TheCall)) { return ExprError(); } break; d719 1 a719 2 bool IsPolyUnsigned = Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_be; d846 1 d934 1 a934 1 return SemaBuiltinARMSpecialReg(BuiltinID, TheCall, 0, 5, true); a957 9 // CheckMipsBuiltinFunctionCall - Checks the constant value passed to the // intrinsic is correct. The switch statement is ordered by DSP, MSA. The // ordering for DSP is unspecified. MSA is ordered by the data format used // by the underlying instruction i.e., df/m, df/n and then by size. // // FIXME: The size tests here should instead be tablegen'd along with the // definitions from include/clang/Basic/BuiltinsMips.def. // FIXME: GCC is strict on signedness for some of these intrinsics, we should // be too. d959 1 a959 1 unsigned i = 0, l = 0, u = 0, m = 0; a968 155 // MSA instrinsics. Instructions (which the intrinsics maps to) which use the // df/m field. // These intrinsics take an unsigned 3 bit immediate. case Mips::BI__builtin_msa_bclri_b: case Mips::BI__builtin_msa_bnegi_b: case Mips::BI__builtin_msa_bseti_b: case Mips::BI__builtin_msa_sat_s_b: case Mips::BI__builtin_msa_sat_u_b: case Mips::BI__builtin_msa_slli_b: case Mips::BI__builtin_msa_srai_b: case Mips::BI__builtin_msa_srari_b: case Mips::BI__builtin_msa_srli_b: case Mips::BI__builtin_msa_srlri_b: i = 1; l = 0; u = 7; break; case Mips::BI__builtin_msa_binsli_b: case Mips::BI__builtin_msa_binsri_b: i = 2; l = 0; u = 7; break; // These intrinsics take an unsigned 4 bit immediate. case Mips::BI__builtin_msa_bclri_h: case Mips::BI__builtin_msa_bnegi_h: case Mips::BI__builtin_msa_bseti_h: case Mips::BI__builtin_msa_sat_s_h: case Mips::BI__builtin_msa_sat_u_h: case Mips::BI__builtin_msa_slli_h: case Mips::BI__builtin_msa_srai_h: case Mips::BI__builtin_msa_srari_h: case Mips::BI__builtin_msa_srli_h: case Mips::BI__builtin_msa_srlri_h: i = 1; l = 0; u = 15; break; case Mips::BI__builtin_msa_binsli_h: case Mips::BI__builtin_msa_binsri_h: i = 2; l = 0; u = 15; break; // These intrinsics take an unsigned 5 bit immedate. // The first block of intrinsics actually have an unsigned 5 bit field, // not a df/n field. case Mips::BI__builtin_msa_clei_u_b: case Mips::BI__builtin_msa_clei_u_h: case Mips::BI__builtin_msa_clei_u_w: case Mips::BI__builtin_msa_clei_u_d: case Mips::BI__builtin_msa_clti_u_b: case Mips::BI__builtin_msa_clti_u_h: case Mips::BI__builtin_msa_clti_u_w: case Mips::BI__builtin_msa_clti_u_d: case Mips::BI__builtin_msa_maxi_u_b: case Mips::BI__builtin_msa_maxi_u_h: case Mips::BI__builtin_msa_maxi_u_w: case Mips::BI__builtin_msa_maxi_u_d: case Mips::BI__builtin_msa_mini_u_b: case Mips::BI__builtin_msa_mini_u_h: case Mips::BI__builtin_msa_mini_u_w: case Mips::BI__builtin_msa_mini_u_d: case Mips::BI__builtin_msa_addvi_b: case Mips::BI__builtin_msa_addvi_h: case Mips::BI__builtin_msa_addvi_w: case Mips::BI__builtin_msa_addvi_d: case Mips::BI__builtin_msa_bclri_w: case Mips::BI__builtin_msa_bnegi_w: case Mips::BI__builtin_msa_bseti_w: case Mips::BI__builtin_msa_sat_s_w: case Mips::BI__builtin_msa_sat_u_w: case Mips::BI__builtin_msa_slli_w: case Mips::BI__builtin_msa_srai_w: case Mips::BI__builtin_msa_srari_w: case Mips::BI__builtin_msa_srli_w: case Mips::BI__builtin_msa_srlri_w: case Mips::BI__builtin_msa_subvi_b: case Mips::BI__builtin_msa_subvi_h: case Mips::BI__builtin_msa_subvi_w: case Mips::BI__builtin_msa_subvi_d: i = 1; l = 0; u = 31; break; case Mips::BI__builtin_msa_binsli_w: case Mips::BI__builtin_msa_binsri_w: i = 2; l = 0; u = 31; break; // These intrinsics take an unsigned 6 bit immediate. case Mips::BI__builtin_msa_bclri_d: case Mips::BI__builtin_msa_bnegi_d: case Mips::BI__builtin_msa_bseti_d: case Mips::BI__builtin_msa_sat_s_d: case Mips::BI__builtin_msa_sat_u_d: case Mips::BI__builtin_msa_slli_d: case Mips::BI__builtin_msa_srai_d: case Mips::BI__builtin_msa_srari_d: case Mips::BI__builtin_msa_srli_d: case Mips::BI__builtin_msa_srlri_d: i = 1; l = 0; u = 63; break; case Mips::BI__builtin_msa_binsli_d: case Mips::BI__builtin_msa_binsri_d: i = 2; l = 0; u = 63; break; // These intrinsics take a signed 5 bit immediate. case Mips::BI__builtin_msa_ceqi_b: case Mips::BI__builtin_msa_ceqi_h: case Mips::BI__builtin_msa_ceqi_w: case Mips::BI__builtin_msa_ceqi_d: case Mips::BI__builtin_msa_clti_s_b: case Mips::BI__builtin_msa_clti_s_h: case Mips::BI__builtin_msa_clti_s_w: case Mips::BI__builtin_msa_clti_s_d: case Mips::BI__builtin_msa_clei_s_b: case Mips::BI__builtin_msa_clei_s_h: case Mips::BI__builtin_msa_clei_s_w: case Mips::BI__builtin_msa_clei_s_d: case Mips::BI__builtin_msa_maxi_s_b: case Mips::BI__builtin_msa_maxi_s_h: case Mips::BI__builtin_msa_maxi_s_w: case Mips::BI__builtin_msa_maxi_s_d: case Mips::BI__builtin_msa_mini_s_b: case Mips::BI__builtin_msa_mini_s_h: case Mips::BI__builtin_msa_mini_s_w: case Mips::BI__builtin_msa_mini_s_d: i = 1; l = -16; u = 15; break; // These intrinsics take an unsigned 8 bit immediate. case Mips::BI__builtin_msa_andi_b: case Mips::BI__builtin_msa_nori_b: case Mips::BI__builtin_msa_ori_b: case Mips::BI__builtin_msa_shf_b: case Mips::BI__builtin_msa_shf_h: case Mips::BI__builtin_msa_shf_w: case Mips::BI__builtin_msa_xori_b: i = 1; l = 0; u = 255; break; case Mips::BI__builtin_msa_bseli_b: case Mips::BI__builtin_msa_bmnzi_b: case Mips::BI__builtin_msa_bmzi_b: i = 2; l = 0; u = 255; break; // df/n format // These intrinsics take an unsigned 4 bit immediate. case Mips::BI__builtin_msa_copy_s_b: case Mips::BI__builtin_msa_copy_u_b: case Mips::BI__builtin_msa_insve_b: case Mips::BI__builtin_msa_splati_b: i = 1; l = 0; u = 15; break; case Mips::BI__builtin_msa_sld_b: case Mips::BI__builtin_msa_sldi_b: i = 2; l = 0; u = 15; break; // These intrinsics take an unsigned 3 bit immediate. case Mips::BI__builtin_msa_copy_s_h: case Mips::BI__builtin_msa_copy_u_h: case Mips::BI__builtin_msa_insve_h: case Mips::BI__builtin_msa_splati_h: i = 1; l = 0; u = 7; break; case Mips::BI__builtin_msa_sld_h: case Mips::BI__builtin_msa_sldi_h: i = 2; l = 0; u = 7; break; // These intrinsics take an unsigned 2 bit immediate. case Mips::BI__builtin_msa_copy_s_w: case Mips::BI__builtin_msa_copy_u_w: case Mips::BI__builtin_msa_insve_w: case Mips::BI__builtin_msa_splati_w: i = 1; l = 0; u = 3; break; case Mips::BI__builtin_msa_sld_w: case Mips::BI__builtin_msa_sldi_w: i = 2; l = 0; u = 3; break; // These intrinsics take an unsigned 1 bit immediate. case Mips::BI__builtin_msa_copy_s_d: case Mips::BI__builtin_msa_copy_u_d: case Mips::BI__builtin_msa_insve_d: case Mips::BI__builtin_msa_splati_d: i = 1; l = 0; u = 1; break; case Mips::BI__builtin_msa_sld_d: case Mips::BI__builtin_msa_sldi_d: i = 2; l = 0; u = 1; break; // Memory offsets and immediate loads. // These intrinsics take a signed 10 bit immediate. case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 127; break; case Mips::BI__builtin_msa_ldi_h: case Mips::BI__builtin_msa_ldi_w: case Mips::BI__builtin_msa_ldi_d: i = 0; l = -512; u = 511; break; case Mips::BI__builtin_msa_ld_b: i = 1; l = -512; u = 511; m = 16; break; case Mips::BI__builtin_msa_ld_h: i = 1; l = -1024; u = 1022; m = 16; break; case Mips::BI__builtin_msa_ld_w: i = 1; l = -2048; u = 2044; m = 16; break; case Mips::BI__builtin_msa_ld_d: i = 1; l = -4096; u = 4088; m = 16; break; case Mips::BI__builtin_msa_st_b: i = 2; l = -512; u = 511; m = 16; break; case Mips::BI__builtin_msa_st_h: i = 2; l = -1024; u = 1022; m = 16; break; case Mips::BI__builtin_msa_st_w: i = 2; l = -2048; u = 2044; m = 16; break; case Mips::BI__builtin_msa_st_d: i = 2; l = -4096; u = 4088; m = 16; break; d971 1 a971 5 if (!m) return SemaBuiltinConstantArgRange(TheCall, i, l, u); return SemaBuiltinConstantArgRange(TheCall, i, l, u) || SemaBuiltinConstantArgMultiple(TheCall, i, m); d1093 2 a1094 6 // Check if the rounding mode is legal. bool Sema::CheckX86BuiltinRoundingOrSAE(unsigned BuiltinID, CallExpr *TheCall) { // Indicates if this instruction has rounding control or just SAE. bool HasRC = false; unsigned ArgNum = 0; d1096 2 a1097 201 default: return false; case X86::BI__builtin_ia32_vcvttsd2si32: case X86::BI__builtin_ia32_vcvttsd2si64: case X86::BI__builtin_ia32_vcvttsd2usi32: case X86::BI__builtin_ia32_vcvttsd2usi64: case X86::BI__builtin_ia32_vcvttss2si32: case X86::BI__builtin_ia32_vcvttss2si64: case X86::BI__builtin_ia32_vcvttss2usi32: case X86::BI__builtin_ia32_vcvttss2usi64: ArgNum = 1; break; case X86::BI__builtin_ia32_cvtps2pd512_mask: case X86::BI__builtin_ia32_cvttpd2dq512_mask: case X86::BI__builtin_ia32_cvttpd2qq512_mask: case X86::BI__builtin_ia32_cvttpd2udq512_mask: case X86::BI__builtin_ia32_cvttpd2uqq512_mask: case X86::BI__builtin_ia32_cvttps2dq512_mask: case X86::BI__builtin_ia32_cvttps2qq512_mask: case X86::BI__builtin_ia32_cvttps2udq512_mask: case X86::BI__builtin_ia32_cvttps2uqq512_mask: case X86::BI__builtin_ia32_exp2pd_mask: case X86::BI__builtin_ia32_exp2ps_mask: case X86::BI__builtin_ia32_getexppd512_mask: case X86::BI__builtin_ia32_getexpps512_mask: case X86::BI__builtin_ia32_rcp28pd_mask: case X86::BI__builtin_ia32_rcp28ps_mask: case X86::BI__builtin_ia32_rsqrt28pd_mask: case X86::BI__builtin_ia32_rsqrt28ps_mask: case X86::BI__builtin_ia32_vcomisd: case X86::BI__builtin_ia32_vcomiss: case X86::BI__builtin_ia32_vcvtph2ps512_mask: ArgNum = 3; break; case X86::BI__builtin_ia32_cmppd512_mask: case X86::BI__builtin_ia32_cmpps512_mask: case X86::BI__builtin_ia32_cmpsd_mask: case X86::BI__builtin_ia32_cmpss_mask: case X86::BI__builtin_ia32_cvtss2sd_round_mask: case X86::BI__builtin_ia32_getexpsd128_round_mask: case X86::BI__builtin_ia32_getexpss128_round_mask: case X86::BI__builtin_ia32_maxpd512_mask: case X86::BI__builtin_ia32_maxps512_mask: case X86::BI__builtin_ia32_maxsd_round_mask: case X86::BI__builtin_ia32_maxss_round_mask: case X86::BI__builtin_ia32_minpd512_mask: case X86::BI__builtin_ia32_minps512_mask: case X86::BI__builtin_ia32_minsd_round_mask: case X86::BI__builtin_ia32_minss_round_mask: case X86::BI__builtin_ia32_rcp28sd_round_mask: case X86::BI__builtin_ia32_rcp28ss_round_mask: case X86::BI__builtin_ia32_reducepd512_mask: case X86::BI__builtin_ia32_reduceps512_mask: case X86::BI__builtin_ia32_rndscalepd_mask: case X86::BI__builtin_ia32_rndscaleps_mask: case X86::BI__builtin_ia32_rsqrt28sd_round_mask: case X86::BI__builtin_ia32_rsqrt28ss_round_mask: ArgNum = 4; break; case X86::BI__builtin_ia32_fixupimmpd512_mask: case X86::BI__builtin_ia32_fixupimmpd512_maskz: case X86::BI__builtin_ia32_fixupimmps512_mask: case X86::BI__builtin_ia32_fixupimmps512_maskz: case X86::BI__builtin_ia32_fixupimmsd_mask: case X86::BI__builtin_ia32_fixupimmsd_maskz: case X86::BI__builtin_ia32_fixupimmss_mask: case X86::BI__builtin_ia32_fixupimmss_maskz: case X86::BI__builtin_ia32_rangepd512_mask: case X86::BI__builtin_ia32_rangeps512_mask: case X86::BI__builtin_ia32_rangesd128_round_mask: case X86::BI__builtin_ia32_rangess128_round_mask: case X86::BI__builtin_ia32_reducesd_mask: case X86::BI__builtin_ia32_reducess_mask: case X86::BI__builtin_ia32_rndscalesd_round_mask: case X86::BI__builtin_ia32_rndscaless_round_mask: ArgNum = 5; break; case X86::BI__builtin_ia32_vcvtsd2si64: case X86::BI__builtin_ia32_vcvtsd2si32: case X86::BI__builtin_ia32_vcvtsd2usi32: case X86::BI__builtin_ia32_vcvtsd2usi64: case X86::BI__builtin_ia32_vcvtss2si32: case X86::BI__builtin_ia32_vcvtss2si64: case X86::BI__builtin_ia32_vcvtss2usi32: case X86::BI__builtin_ia32_vcvtss2usi64: ArgNum = 1; HasRC = true; break; case X86::BI__builtin_ia32_cvtsi2sd64: case X86::BI__builtin_ia32_cvtsi2ss32: case X86::BI__builtin_ia32_cvtsi2ss64: case X86::BI__builtin_ia32_cvtusi2sd64: case X86::BI__builtin_ia32_cvtusi2ss32: case X86::BI__builtin_ia32_cvtusi2ss64: ArgNum = 2; HasRC = true; break; case X86::BI__builtin_ia32_cvtdq2ps512_mask: case X86::BI__builtin_ia32_cvtudq2ps512_mask: case X86::BI__builtin_ia32_cvtpd2ps512_mask: case X86::BI__builtin_ia32_cvtpd2qq512_mask: case X86::BI__builtin_ia32_cvtpd2uqq512_mask: case X86::BI__builtin_ia32_cvtps2qq512_mask: case X86::BI__builtin_ia32_cvtps2uqq512_mask: case X86::BI__builtin_ia32_cvtqq2pd512_mask: case X86::BI__builtin_ia32_cvtqq2ps512_mask: case X86::BI__builtin_ia32_cvtuqq2pd512_mask: case X86::BI__builtin_ia32_cvtuqq2ps512_mask: case X86::BI__builtin_ia32_sqrtpd512_mask: case X86::BI__builtin_ia32_sqrtps512_mask: ArgNum = 3; HasRC = true; break; case X86::BI__builtin_ia32_addpd512_mask: case X86::BI__builtin_ia32_addps512_mask: case X86::BI__builtin_ia32_divpd512_mask: case X86::BI__builtin_ia32_divps512_mask: case X86::BI__builtin_ia32_mulpd512_mask: case X86::BI__builtin_ia32_mulps512_mask: case X86::BI__builtin_ia32_subpd512_mask: case X86::BI__builtin_ia32_subps512_mask: case X86::BI__builtin_ia32_addss_round_mask: case X86::BI__builtin_ia32_addsd_round_mask: case X86::BI__builtin_ia32_divss_round_mask: case X86::BI__builtin_ia32_divsd_round_mask: case X86::BI__builtin_ia32_mulss_round_mask: case X86::BI__builtin_ia32_mulsd_round_mask: case X86::BI__builtin_ia32_subss_round_mask: case X86::BI__builtin_ia32_subsd_round_mask: case X86::BI__builtin_ia32_scalefpd512_mask: case X86::BI__builtin_ia32_scalefps512_mask: case X86::BI__builtin_ia32_scalefsd_round_mask: case X86::BI__builtin_ia32_scalefss_round_mask: case X86::BI__builtin_ia32_getmantpd512_mask: case X86::BI__builtin_ia32_getmantps512_mask: case X86::BI__builtin_ia32_cvtsd2ss_round_mask: case X86::BI__builtin_ia32_sqrtsd_round_mask: case X86::BI__builtin_ia32_sqrtss_round_mask: case X86::BI__builtin_ia32_vfmaddpd512_mask: case X86::BI__builtin_ia32_vfmaddpd512_mask3: case X86::BI__builtin_ia32_vfmaddpd512_maskz: case X86::BI__builtin_ia32_vfmaddps512_mask: case X86::BI__builtin_ia32_vfmaddps512_mask3: case X86::BI__builtin_ia32_vfmaddps512_maskz: case X86::BI__builtin_ia32_vfmaddsubpd512_mask: case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: case X86::BI__builtin_ia32_vfmaddsubpd512_maskz: case X86::BI__builtin_ia32_vfmaddsubps512_mask: case X86::BI__builtin_ia32_vfmaddsubps512_mask3: case X86::BI__builtin_ia32_vfmaddsubps512_maskz: case X86::BI__builtin_ia32_vfmsubpd512_mask3: case X86::BI__builtin_ia32_vfmsubps512_mask3: case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: case X86::BI__builtin_ia32_vfmsubaddps512_mask3: case X86::BI__builtin_ia32_vfnmaddpd512_mask: case X86::BI__builtin_ia32_vfnmaddps512_mask: case X86::BI__builtin_ia32_vfnmsubpd512_mask: case X86::BI__builtin_ia32_vfnmsubpd512_mask3: case X86::BI__builtin_ia32_vfnmsubps512_mask: case X86::BI__builtin_ia32_vfnmsubps512_mask3: case X86::BI__builtin_ia32_vfmaddsd3_mask: case X86::BI__builtin_ia32_vfmaddsd3_maskz: case X86::BI__builtin_ia32_vfmaddsd3_mask3: case X86::BI__builtin_ia32_vfmaddss3_mask: case X86::BI__builtin_ia32_vfmaddss3_maskz: case X86::BI__builtin_ia32_vfmaddss3_mask3: ArgNum = 4; HasRC = true; break; case X86::BI__builtin_ia32_getmantsd_round_mask: case X86::BI__builtin_ia32_getmantss_round_mask: ArgNum = 5; HasRC = true; break; } llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; // Make sure rounding mode is either ROUND_CUR_DIRECTION or ROUND_NO_EXC bit // is set. If the intrinsic has rounding control(bits 1:0), make sure its only // combined with ROUND_NO_EXC. if (Result == 4/*ROUND_CUR_DIRECTION*/ || Result == 8/*ROUND_NO_EXC*/ || (HasRC && Result.getZExtValue() >= 8 && Result.getZExtValue() <= 11)) return false; return Diag(TheCall->getLocStart(), diag::err_x86_builtin_invalid_rounding) << Arg->getSourceRange(); } bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (BuiltinID == X86::BI__builtin_cpu_supports) d1099 1 a1099 2 if (BuiltinID == X86::BI__builtin_ms_va_start) d1101 2 a1102 21 // If the intrinsic has rounding or SAE make sure its valid. if (CheckX86BuiltinRoundingOrSAE(BuiltinID, TheCall)) return true; // For intrinsics which take an immediate value as part of the instruction, // range check them here. int i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case X86::BI_mm_prefetch: i = 1; l = 0; u = 3; break; case X86::BI__builtin_ia32_sha1rnds4: case X86::BI__builtin_ia32_shuf_f32x4_256_mask: case X86::BI__builtin_ia32_shuf_f64x2_256_mask: case X86::BI__builtin_ia32_shuf_i32x4_256_mask: case X86::BI__builtin_ia32_shuf_i64x2_256_mask: i = 2; l = 0; u = 3; break; d1106 1 a1106 3 case X86::BI__builtin_ia32_vpermil2ps256: i = 3; l = 0; u = 3; break; d1130 1 a1130 11 case X86::BI__builtin_ia32_ucmpq512_mask: case X86::BI__builtin_ia32_vpcomub: case X86::BI__builtin_ia32_vpcomuw: case X86::BI__builtin_ia32_vpcomud: case X86::BI__builtin_ia32_vpcomuq: case X86::BI__builtin_ia32_vpcomb: case X86::BI__builtin_ia32_vpcomw: case X86::BI__builtin_ia32_vpcomd: case X86::BI__builtin_ia32_vpcomq: i = 2; l = 0; u = 7; break; d1134 1 a1134 3 case X86::BI__builtin_ia32_roundpd256: i = 1; l = 0; u = 15; break; d1136 1 a1136 11 case X86::BI__builtin_ia32_roundsd: case X86::BI__builtin_ia32_rangepd128_mask: case X86::BI__builtin_ia32_rangepd256_mask: case X86::BI__builtin_ia32_rangepd512_mask: case X86::BI__builtin_ia32_rangeps128_mask: case X86::BI__builtin_ia32_rangeps256_mask: case X86::BI__builtin_ia32_rangeps512_mask: case X86::BI__builtin_ia32_getmantsd_round_mask: case X86::BI__builtin_ia32_getmantss_round_mask: i = 2; l = 0; u = 15; break; a1142 4 case X86::BI__builtin_ia32_cmpps128_mask: case X86::BI__builtin_ia32_cmppd128_mask: case X86::BI__builtin_ia32_cmpps256_mask: case X86::BI__builtin_ia32_cmppd256_mask: d1144 9 a1152 124 case X86::BI__builtin_ia32_cmppd512_mask: case X86::BI__builtin_ia32_cmpsd_mask: case X86::BI__builtin_ia32_cmpss_mask: i = 2; l = 0; u = 31; break; case X86::BI__builtin_ia32_xabort: i = 0; l = -128; u = 255; break; case X86::BI__builtin_ia32_pshufw: case X86::BI__builtin_ia32_aeskeygenassist128: i = 1; l = -128; u = 255; break; case X86::BI__builtin_ia32_vcvtps2ph: case X86::BI__builtin_ia32_vcvtps2ph256: case X86::BI__builtin_ia32_rndscaleps_128_mask: case X86::BI__builtin_ia32_rndscalepd_128_mask: case X86::BI__builtin_ia32_rndscaleps_256_mask: case X86::BI__builtin_ia32_rndscalepd_256_mask: case X86::BI__builtin_ia32_rndscaleps_mask: case X86::BI__builtin_ia32_rndscalepd_mask: case X86::BI__builtin_ia32_reducepd128_mask: case X86::BI__builtin_ia32_reducepd256_mask: case X86::BI__builtin_ia32_reducepd512_mask: case X86::BI__builtin_ia32_reduceps128_mask: case X86::BI__builtin_ia32_reduceps256_mask: case X86::BI__builtin_ia32_reduceps512_mask: case X86::BI__builtin_ia32_prold512_mask: case X86::BI__builtin_ia32_prolq512_mask: case X86::BI__builtin_ia32_prold128_mask: case X86::BI__builtin_ia32_prold256_mask: case X86::BI__builtin_ia32_prolq128_mask: case X86::BI__builtin_ia32_prolq256_mask: case X86::BI__builtin_ia32_prord128_mask: case X86::BI__builtin_ia32_prord256_mask: case X86::BI__builtin_ia32_prorq128_mask: case X86::BI__builtin_ia32_prorq256_mask: case X86::BI__builtin_ia32_fpclasspd128_mask: case X86::BI__builtin_ia32_fpclasspd256_mask: case X86::BI__builtin_ia32_fpclassps128_mask: case X86::BI__builtin_ia32_fpclassps256_mask: case X86::BI__builtin_ia32_fpclassps512_mask: case X86::BI__builtin_ia32_fpclasspd512_mask: case X86::BI__builtin_ia32_fpclasssd_mask: case X86::BI__builtin_ia32_fpclassss_mask: i = 1; l = 0; u = 255; break; case X86::BI__builtin_ia32_palignr: case X86::BI__builtin_ia32_insertps128: case X86::BI__builtin_ia32_dpps: case X86::BI__builtin_ia32_dppd: case X86::BI__builtin_ia32_dpps256: case X86::BI__builtin_ia32_mpsadbw128: case X86::BI__builtin_ia32_mpsadbw256: case X86::BI__builtin_ia32_pcmpistrm128: case X86::BI__builtin_ia32_pcmpistri128: case X86::BI__builtin_ia32_pcmpistria128: case X86::BI__builtin_ia32_pcmpistric128: case X86::BI__builtin_ia32_pcmpistrio128: case X86::BI__builtin_ia32_pcmpistris128: case X86::BI__builtin_ia32_pcmpistriz128: case X86::BI__builtin_ia32_pclmulqdq128: case X86::BI__builtin_ia32_vperm2f128_pd256: case X86::BI__builtin_ia32_vperm2f128_ps256: case X86::BI__builtin_ia32_vperm2f128_si256: case X86::BI__builtin_ia32_permti256: i = 2; l = -128; u = 255; break; case X86::BI__builtin_ia32_palignr128: case X86::BI__builtin_ia32_palignr256: case X86::BI__builtin_ia32_palignr512_mask: case X86::BI__builtin_ia32_vcomisd: case X86::BI__builtin_ia32_vcomiss: case X86::BI__builtin_ia32_shuf_f32x4_mask: case X86::BI__builtin_ia32_shuf_f64x2_mask: case X86::BI__builtin_ia32_shuf_i32x4_mask: case X86::BI__builtin_ia32_shuf_i64x2_mask: case X86::BI__builtin_ia32_dbpsadbw128_mask: case X86::BI__builtin_ia32_dbpsadbw256_mask: case X86::BI__builtin_ia32_dbpsadbw512_mask: i = 2; l = 0; u = 255; break; case X86::BI__builtin_ia32_fixupimmpd512_mask: case X86::BI__builtin_ia32_fixupimmpd512_maskz: case X86::BI__builtin_ia32_fixupimmps512_mask: case X86::BI__builtin_ia32_fixupimmps512_maskz: case X86::BI__builtin_ia32_fixupimmsd_mask: case X86::BI__builtin_ia32_fixupimmsd_maskz: case X86::BI__builtin_ia32_fixupimmss_mask: case X86::BI__builtin_ia32_fixupimmss_maskz: case X86::BI__builtin_ia32_fixupimmpd128_mask: case X86::BI__builtin_ia32_fixupimmpd128_maskz: case X86::BI__builtin_ia32_fixupimmpd256_mask: case X86::BI__builtin_ia32_fixupimmpd256_maskz: case X86::BI__builtin_ia32_fixupimmps128_mask: case X86::BI__builtin_ia32_fixupimmps128_maskz: case X86::BI__builtin_ia32_fixupimmps256_mask: case X86::BI__builtin_ia32_fixupimmps256_maskz: case X86::BI__builtin_ia32_pternlogd512_mask: case X86::BI__builtin_ia32_pternlogd512_maskz: case X86::BI__builtin_ia32_pternlogq512_mask: case X86::BI__builtin_ia32_pternlogq512_maskz: case X86::BI__builtin_ia32_pternlogd128_mask: case X86::BI__builtin_ia32_pternlogd128_maskz: case X86::BI__builtin_ia32_pternlogd256_mask: case X86::BI__builtin_ia32_pternlogd256_maskz: case X86::BI__builtin_ia32_pternlogq128_mask: case X86::BI__builtin_ia32_pternlogq128_maskz: case X86::BI__builtin_ia32_pternlogq256_mask: case X86::BI__builtin_ia32_pternlogq256_maskz: i = 3; l = 0; u = 255; break; case X86::BI__builtin_ia32_pcmpestrm128: case X86::BI__builtin_ia32_pcmpestri128: case X86::BI__builtin_ia32_pcmpestria128: case X86::BI__builtin_ia32_pcmpestric128: case X86::BI__builtin_ia32_pcmpestrio128: case X86::BI__builtin_ia32_pcmpestris128: case X86::BI__builtin_ia32_pcmpestriz128: i = 4; l = -128; u = 255; break; case X86::BI__builtin_ia32_rndscalesd_round_mask: case X86::BI__builtin_ia32_rndscaless_round_mask: i = 4; l = 0; u = 255; break; d1392 1 a1392 3 auto *FD = dyn_cast_or_null(FDecl); if (CallType != VariadicDoesNotApply && (!FD || FD->getBuiltinID() != Builtin::BI__noop)) { d1461 1 a1461 3 CheckAbsoluteValueFunction(TheCall, FDecl); CheckMaxUnsignedZero(TheCall, FDecl); d1537 2 a1538 1 if (!llvm::isValidAtomicOrderingCABI(Ordering)) a1540 1 auto OrderingCABI = (llvm::AtomicOrderingCABI)Ordering; d1548 2 a1549 2 return OrderingCABI != llvm::AtomicOrderingCABI::release && OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; d1554 3 a1556 3 return OrderingCABI != llvm::AtomicOrderingCABI::consume && OrderingCABI != llvm::AtomicOrderingCABI::acquire && OrderingCABI != llvm::AtomicOrderingCABI::acq_rel; a1574 2 LoadCopy, // void __atomic_store(A *, CP, int) d1587 2 a1588 2 const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 3, 4, 5, 6 }; const unsigned NumVals[] = { 1, 0, 1, 1, 1, 1, 2, 2, 3 }; d1618 1 a1619 4 Form = LoadCopy; break; case AtomicExpr::AO__c11_atomic_store: d1683 1 a1683 5 ExprResult ConvertedPtr = DefaultFunctionArrayLvalueConversion(Ptr); if (ConvertedPtr.isInvalid()) return ExprError(); Ptr = ConvertedPtr.get(); d1706 1 a1706 1 } else if (Form != Load && Form != LoadCopy) { d1767 1 a1767 1 // other operands. Similarly atomic_load can take a pointer to a const 'A'. a1768 1 ValType.removeLocalConst(); d1770 1 a1770 1 if (Form == Copy || Form == LoadCopy || Form == GNUXchg || Form == Init) d1781 4 a1805 3 // Treat this argument as _Nonnull as we want to show a warning if // NULL is passed into it. CheckNonNullArgument(*this, ValArg, DRE->getLocStart()); a1850 1 case LoadCopy: d1900 1 d2382 7 a2388 7 SmallVector ToBuf(NumBytes); const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data(); llvm::UTF16 *ToPtr = &ToBuf[0]; llvm::ConversionResult Result = llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, ToPtr + NumBytes, llvm::strictConversion); d2390 1 a2390 1 if (Result != llvm::conversionOK) a2396 25 /// CheckObjCString - Checks that the format string argument to the os_log() /// and os_trace() functions is correct, and converts it to const char *. ExprResult Sema::CheckOSLogFormatStringArg(Expr *Arg) { Arg = Arg->IgnoreParenCasts(); auto *Literal = dyn_cast(Arg); if (!Literal) { if (auto *ObjcLiteral = dyn_cast(Arg)) { Literal = ObjcLiteral->getString(); } } if (!Literal || (!Literal->isAscii() && !Literal->isUTF8())) { return ExprError( Diag(Arg->getLocStart(), diag::err_os_log_format_not_string_constant) << Arg->getSourceRange()); } ExprResult Result(Literal); QualType ResultTy = Context.getPointerType(Context.CharTy.withConst()); InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, ResultTy, false); Result = PerformCopyInitialization(Entity, SourceLocation(), Result); return Result; } a2445 1 bool IsCRegister = false; d2453 1 a2453 1 LastArg = CurBlock->TheDecl->parameters().back(); d2455 1 a2455 1 LastArg = FD->parameters().back(); d2457 1 a2457 1 LastArg = getCurMethodDecl()->parameters().back(); a2461 2 IsCRegister = PV->getStorageClass() == SC_Register && !getLangOpts().CPlusPlus; d2467 4 a2470 17 diag::warn_second_arg_of_va_start_not_last_named_param); else if (IsCRegister || Type->isReferenceType() || Type->isSpecificBuiltinType(BuiltinType::Float) || [=] { // Promotable integers are UB, but enumerations need a bit of // extra checking to see what their promotable type actually is. if (!Type->isPromotableIntegerType()) return false; if (!Type->isEnumeralType()) return true; const EnumDecl *ED = Type->getAs()->getDecl(); return !(ED && Context.typesAreCompatible(ED->getPromotionType(), Type)); }()) { unsigned Reason = 0; if (Type->isReferenceType()) Reason = 1; else if (IsCRegister) Reason = 2; Diag(Arg->getLocStart(), diag::warn_va_start_type_is_undefined) << Reason; d2640 1 a2640 1 // If this is an implicit conversion from float -> float or double, remove it. d2642 6 a2647 10 // Only remove standard FloatCasts, leaving other casts inplace if (Cast->getCastKind() == CK_FloatingCast) { Expr *CastArg = Cast->getSubExpr(); if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) { assert((Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float)) && "promotion from float to either float or double is the only expected cast here"); Cast->setSubExpr(nullptr); TheCall->setArg(NumArgs-1, CastArg); } d2665 2 a2666 1 // 2) binary, scalar mask: (lhs, rhs, index, ..., index) a2804 36 /// Handle __builtin_alloca_with_align. This is declared /// as (size_t, size_t) where the second size_t must be a power of 2 greater /// than 8. bool Sema::SemaBuiltinAllocaWithAlign(CallExpr *TheCall) { // The alignment must be a constant integer. Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (!Arg->isTypeDependent() && !Arg->isValueDependent()) { if (const auto *UE = dyn_cast(Arg->IgnoreParenImpCasts())) if (UE->getKind() == UETT_AlignOf) Diag(TheCall->getLocStart(), diag::warn_alloca_align_alignof) << Arg->getSourceRange(); llvm::APSInt Result = Arg->EvaluateKnownConstInt(Context); if (!Result.isPowerOf2()) return Diag(TheCall->getLocStart(), diag::err_alignment_not_power_of_two) << Arg->getSourceRange(); if (Result < Context.getCharWidth()) return Diag(TheCall->getLocStart(), diag::err_alignment_too_small) << (unsigned)Context.getCharWidth() << Arg->getSourceRange(); if (Result > INT32_MAX) return Diag(TheCall->getLocStart(), diag::err_alignment_too_big) << INT32_MAX << Arg->getSourceRange(); } return false; } a2842 80 bool Sema::SemaBuiltinOSLogFormat(CallExpr *TheCall) { unsigned BuiltinID = cast(TheCall->getCalleeDecl())->getBuiltinID(); bool IsSizeCall = BuiltinID == Builtin::BI__builtin_os_log_format_buffer_size; unsigned NumArgs = TheCall->getNumArgs(); unsigned NumRequiredArgs = IsSizeCall ? 1 : 2; if (NumArgs < NumRequiredArgs) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 /* function call */ << NumRequiredArgs << NumArgs << TheCall->getSourceRange(); } if (NumArgs >= NumRequiredArgs + 0x100) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /* function call */ << (NumRequiredArgs + 0xff) << NumArgs << TheCall->getSourceRange(); } unsigned i = 0; // For formatting call, check buffer arg. if (!IsSizeCall) { ExprResult Arg(TheCall->getArg(i)); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, Context.VoidPtrTy, false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); i++; } // Check string literal arg. unsigned FormatIdx = i; { ExprResult Arg = CheckOSLogFormatStringArg(TheCall->getArg(i)); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); i++; } // Make sure variadic args are scalar. unsigned FirstDataArg = i; while (i < NumArgs) { ExprResult Arg = DefaultVariadicArgumentPromotion( TheCall->getArg(i), VariadicFunction, nullptr); if (Arg.isInvalid()) return true; CharUnits ArgSize = Context.getTypeSizeInChars(Arg.get()->getType()); if (ArgSize.getQuantity() >= 0x100) { return Diag(Arg.get()->getLocEnd(), diag::err_os_log_argument_too_big) << i << (int)ArgSize.getQuantity() << 0xff << TheCall->getSourceRange(); } TheCall->setArg(i, Arg.get()); i++; } // Check formatting specifiers. NOTE: We're only doing this for the non-size // call to avoid duplicate diagnostics. if (!IsSizeCall) { llvm::SmallBitVector CheckedVarArgs(NumArgs, false); ArrayRef Args(TheCall->getArgs(), TheCall->getNumArgs()); bool Success = CheckFormatArguments( Args, /*HasVAListArg*/ false, FormatIdx, FirstDataArg, FST_OSLog, VariadicFunction, TheCall->getLocStart(), SourceRange(), CheckedVarArgs); if (!Success) return true; } if (IsSizeCall) { TheCall->setType(Context.getSizeType()); } else { TheCall->setType(Context.VoidPtrTy); } return false; } a2881 22 /// SemaBuiltinConstantArgMultiple - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression is a multiple of Num.. bool Sema::SemaBuiltinConstantArgMultiple(CallExpr *TheCall, int ArgNum, unsigned Num) { llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; if (Result.getSExtValue() % Num != 0) return Diag(TheCall->getLocStart(), diag::err_argument_not_multiple) << Num << Arg->getSourceRange(); return false; } d2948 1 a2948 1 Ranges.append({IsAArch64Builtin ? 1 : 15, 7, 15, 15, 7}); d3005 1 a3015 45 class UncoveredArgHandler { enum { Unknown = -1, AllCovered = -2 }; signed FirstUncoveredArg; SmallVector DiagnosticExprs; public: UncoveredArgHandler() : FirstUncoveredArg(Unknown) { } bool hasUncoveredArg() const { return (FirstUncoveredArg >= 0); } unsigned getUncoveredArg() const { assert(hasUncoveredArg() && "no uncovered argument"); return FirstUncoveredArg; } void setAllCovered() { // A string has been found with all arguments covered, so clear out // the diagnostics. DiagnosticExprs.clear(); FirstUncoveredArg = AllCovered; } void Update(signed NewFirstUncoveredArg, const Expr *StrExpr) { assert(NewFirstUncoveredArg >= 0 && "Outside range"); // Don't update if a previous string covers all arguments. if (FirstUncoveredArg == AllCovered) return; // UncoveredArgHandler tracks the highest uncovered argument index // and with it all the strings that match this index. if (NewFirstUncoveredArg == FirstUncoveredArg) DiagnosticExprs.push_back(StrExpr); else if (NewFirstUncoveredArg > FirstUncoveredArg) { DiagnosticExprs.clear(); DiagnosticExprs.push_back(StrExpr); FirstUncoveredArg = NewFirstUncoveredArg; } } void Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr); }; a3020 40 } // end anonymous namespace static void sumOffsets(llvm::APSInt &Offset, llvm::APSInt Addend, BinaryOperatorKind BinOpKind, bool AddendIsRight) { unsigned BitWidth = Offset.getBitWidth(); unsigned AddendBitWidth = Addend.getBitWidth(); // There might be negative interim results. if (Addend.isUnsigned()) { Addend = Addend.zext(++AddendBitWidth); Addend.setIsSigned(true); } // Adjust the bit width of the APSInts. if (AddendBitWidth > BitWidth) { Offset = Offset.sext(AddendBitWidth); BitWidth = AddendBitWidth; } else if (BitWidth > AddendBitWidth) { Addend = Addend.sext(BitWidth); } bool Ov = false; llvm::APSInt ResOffset = Offset; if (BinOpKind == BO_Add) ResOffset = Offset.sadd_ov(Addend, Ov); else { assert(AddendIsRight && BinOpKind == BO_Sub && "operator must be add or sub with addend on the right"); ResOffset = Offset.ssub_ov(Addend, Ov); } // We add an offset to a pointer here so we should support an offset as big as // possible. if (Ov) { assert(BitWidth <= UINT_MAX / 2 && "index (intermediate) result too big"); Offset = Offset.sext(2 * BitWidth); sumOffsets(Offset, Addend, BinOpKind, AddendIsRight); return; } Offset = ResOffset; a3022 59 namespace { // This is a wrapper class around StringLiteral to support offsetted string // literals as format strings. It takes the offset into account when returning // the string and its length or the source locations to display notes correctly. class FormatStringLiteral { const StringLiteral *FExpr; int64_t Offset; public: FormatStringLiteral(const StringLiteral *fexpr, int64_t Offset = 0) : FExpr(fexpr), Offset(Offset) {} StringRef getString() const { return FExpr->getString().drop_front(Offset); } unsigned getByteLength() const { return FExpr->getByteLength() - getCharByteWidth() * Offset; } unsigned getLength() const { return FExpr->getLength() - Offset; } unsigned getCharByteWidth() const { return FExpr->getCharByteWidth(); } StringLiteral::StringKind getKind() const { return FExpr->getKind(); } QualType getType() const { return FExpr->getType(); } bool isAscii() const { return FExpr->isAscii(); } bool isWide() const { return FExpr->isWide(); } bool isUTF8() const { return FExpr->isUTF8(); } bool isUTF16() const { return FExpr->isUTF16(); } bool isUTF32() const { return FExpr->isUTF32(); } bool isPascal() const { return FExpr->isPascal(); } SourceLocation getLocationOfByte( unsigned ByteNo, const SourceManager &SM, const LangOptions &Features, const TargetInfo &Target, unsigned *StartToken = nullptr, unsigned *StartTokenByteOffset = nullptr) const { return FExpr->getLocationOfByte(ByteNo + Offset, SM, Features, Target, StartToken, StartTokenByteOffset); } SourceLocation getLocStart() const LLVM_READONLY { return FExpr->getLocStart().getLocWithOffset(Offset); } SourceLocation getLocEnd() const LLVM_READONLY { return FExpr->getLocEnd(); } }; } // end anonymous namespace static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg); d3032 1 a3032 3 llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg, llvm::APSInt Offset) { a3033 2 assert(Offset.isSigned() && "invalid offset"); d3053 6 a3058 31 // Determine whether it is necessary to check both sub-expressions, for // example, because the condition expression is a constant that can be // evaluated at compile time. bool CheckLeft = true, CheckRight = true; bool Cond; if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext())) { if (Cond) CheckRight = false; else CheckLeft = false; } // We need to maintain the offsets for the right and the left hand side // separately to check if every possible indexed expression is a valid // string literal. They might have different offsets for different string // literals in the end. StringLiteralCheckType Left; if (!CheckLeft) Left = SLCT_UncheckedLiteral; else { Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); if (Left == SLCT_NotALiteral || !CheckRight) { return Left; } } d3062 2 a3063 4 Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); return (CheckLeft && Left < Right) ? Left : Right; d3114 1 a3114 2 /*InFunctionCall*/ false, CheckedVarArgs, UncoveredArg, Offset); d3169 1 a3169 1 CheckedVarArgs, UncoveredArg, Offset); d3178 1 a3178 2 InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); a3184 14 case Stmt::ObjCMessageExprClass: { const auto *ME = cast(E); if (const auto *ND = ME->getMethodDecl()) { if (const auto *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); const Expr *Arg = ME->getArg(ArgIndex - 1); return checkFormatStringExpr( S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); } } return SLCT_NotALiteral; } d3195 2 a3196 9 if (Offset.isNegative() || Offset > StrE->getLength()) { // TODO: It would be better to have an explicit warning for out of // bounds literals. return SLCT_NotALiteral; } FormatStringLiteral FStr(StrE, Offset.sextOrTrunc(64).getSExtValue()); CheckFormatString(S, &FStr, E, Args, HasVAListArg, format_idx, firstDataArg, Type, InFunctionCall, CallType, CheckedVarArgs, UncoveredArg); a3201 44 case Stmt::BinaryOperatorClass: { llvm::APSInt LResult; llvm::APSInt RResult; const BinaryOperator *BinOp = cast(E); // A string literal + an int offset is still a string literal. if (BinOp->isAdditiveOp()) { bool LIsInt = BinOp->getLHS()->EvaluateAsInt(LResult, S.Context); bool RIsInt = BinOp->getRHS()->EvaluateAsInt(RResult, S.Context); if (LIsInt != RIsInt) { BinaryOperatorKind BinOpKind = BinOp->getOpcode(); if (LIsInt) { if (BinOpKind == BO_Add) { sumOffsets(Offset, LResult, BinOpKind, RIsInt); E = BinOp->getRHS(); goto tryAgain; } } else { sumOffsets(Offset, RResult, BinOpKind, RIsInt); E = BinOp->getLHS(); goto tryAgain; } } } return SLCT_NotALiteral; } case Stmt::UnaryOperatorClass: { const UnaryOperator *UnaOp = cast(E); auto ASE = dyn_cast(UnaOp->getSubExpr()); if (UnaOp->getOpcode() == clang::UO_AddrOf && ASE) { llvm::APSInt IndexResult; if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context)) { sumOffsets(Offset, IndexResult, BO_Add, /*RHS is int*/ true); E = ASE->getBase(); goto tryAgain; } } return SLCT_NotALiteral; } d3210 9 a3218 10 .Case("scanf", FST_Scanf) .Cases("printf", "printf0", FST_Printf) .Cases("NSString", "CFString", FST_NSString) .Case("strftime", FST_Strftime) .Case("strfmon", FST_Strfmon) .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) .Case("freebsd_kprintf", FST_FreeBSDKPrintf) .Case("os_trace", FST_OSLog) .Case("os_log", FST_OSLog) .Default(FST_Unknown); a3263 1 UncoveredArgHandler UncoveredArg; d3267 1 a3267 11 /*IsFunctionCall*/ true, CheckedVarArgs, UncoveredArg, /*no string offset*/ llvm::APSInt(64, false) = 0); // Generate a diagnostic where an uncovered argument is detected. if (UncoveredArg.hasUncoveredArg()) { unsigned ArgIdx = UncoveredArg.getUncoveredArg() + firstDataArg; assert(ArgIdx < Args.size() && "ArgIdx outside bounds"); UncoveredArg.Diagnose(*this, /*IsFunctionCall*/true, Args[ArgIdx]); } d3281 2 a3282 2 SourceLocation FormatLoc = Args[format_idx]->getLocStart(); if (Type == FST_NSString && SourceMgr.isInSystemMacro(FormatLoc)) d3287 3 a3289 2 if (Args.size() == firstDataArg) { Diag(FormatLoc, diag::warn_format_nonliteral_noargs) d3291 4 a3294 18 switch (Type) { default: break; case FST_Kprintf: case FST_FreeBSDKPrintf: case FST_Printf: Diag(FormatLoc, diag::note_format_security_fixit) << FixItHint::CreateInsertion(FormatLoc, "\"%s\", "); break; case FST_NSString: Diag(FormatLoc, diag::note_format_security_fixit) << FixItHint::CreateInsertion(FormatLoc, "@@\"%@@\", "); break; } } else { Diag(FormatLoc, diag::warn_format_nonliteral) << OrigFormatExpr->getSourceRange(); } d3302 1 a3302 1 const FormatStringLiteral *FExpr; a3303 1 const Sema::FormatStringType FSType; a3315 2 UncoveredArgHandler &UncoveredArg; d3317 2 a3318 3 CheckFormatHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, const Sema::FormatStringType type, unsigned firstDataArg, d3320 11 a3330 10 ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType callType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FSType(type), FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), usesPositionalArgs(false), atFirstArg(true), inFunctionCall(inFunctionCall), CallType(callType), CheckedVarArgs(CheckedVarArgs), UncoveredArg(UncoveredArg) { d3365 6 a3370 5 static void EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, const PartialDiagnostic &PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); d3399 1 a3399 1 } // end anonymous namespace d3417 1 a3417 2 return FExpr->getLocationOfByte(x - Beg, S.getSourceManager(), S.getLangOpts(), S.Context.getTargetInfo()); d3561 2 a3562 2 // Does the number of data arguments exceed the number of // format conversions in the format string? d3569 8 a3576 3 UncoveredArg.Update(notCoveredArg, OrigFormatExpr); } else { UncoveredArg.setAllCovered(); a3580 23 void UncoveredArgHandler::Diagnose(Sema &S, bool IsFunctionCall, const Expr *ArgExpr) { assert(hasUncoveredArg() && DiagnosticExprs.size() > 0 && "Invalid state"); if (!ArgExpr) return; SourceLocation Loc = ArgExpr->getLocStart(); if (S.getSourceManager().isInSystemMacro(Loc)) return; PartialDiagnostic PDiag = S.PDiag(diag::warn_printf_data_arg_not_used); for (auto E : DiagnosticExprs) PDiag << E->getSourceRange(); CheckFormatHandler::EmitFormatDiagnostic( S, IsFunctionCall, DiagnosticExprs[0], PDiag, Loc, /*IsStringLocation*/false, DiagnosticExprs[0]->getSourceRange()); } d3588 1 d3603 6 a3608 35 StringRef Specifier(csStart, csLen); // If the specifier in non-printable, it could be the first byte of a UTF-8 // sequence. In that case, print the UTF-8 code point. If not, print the byte // hex value. std::string CodePointStr; if (!llvm::sys::locale::isPrint(*csStart)) { llvm::UTF32 CodePoint; const llvm::UTF8 **B = reinterpret_cast(&csStart); const llvm::UTF8 *E = reinterpret_cast(csStart + csLen); llvm::ConversionResult Result = llvm::convertUTF8Sequence(B, E, &CodePoint, llvm::strictConversion); if (Result != llvm::conversionOK) { unsigned char FirstChar = *csStart; CodePoint = (llvm::UTF32)FirstChar; } llvm::raw_string_ostream OS(CodePointStr); if (CodePoint < 256) OS << "\\x" << llvm::format("%02x", CodePoint); else if (CodePoint <= 0xFFFF) OS << "\\u" << llvm::format("%04x", CodePoint); else OS << "\\U" << llvm::format("%08x", CodePoint); OS.flush(); Specifier = CodePointStr; } EmitFormatDiagnostic( S.PDiag(diag::warn_format_invalid_conversion) << Specifier, Loc, /*IsStringLocation*/ true, getSpecifierRange(startSpec, specifierLen)); a3634 4 // Since more arguments than conversion tokens are given, by extension // all arguments are covered, so mark this as so. UncoveredArg.setAllCovered(); d3677 8 a3684 5 template void CheckFormatHandler::EmitFormatDiagnostic( Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, const PartialDiagnostic &PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { d3706 1 d3708 5 a3712 5 CheckPrintfHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, const Sema::FormatStringType type, unsigned firstDataArg, unsigned numDataArgs, bool isObjC, const char *beg, bool hasVAListArg, ArrayRef Args, d3715 7 a3721 14 llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg) {} bool isObjCContext() const { return FSType == Sema::FST_NSString; } /// Returns true if '%@@' specifiers are allowed in the format string. bool allowsObjCArg() const { return FSType == Sema::FST_NSString || FSType == Sema::FST_OSLog || FSType == Sema::FST_OSTrace; } d3763 1 a3763 1 } // end anonymous namespace d3782 1 d3994 1 d4077 1 a4077 26 if (!allowsObjCArg() && CS.isObjCArg()) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // %P can only be used with os_log. if (FSType != Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::PArg) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // %n is not allowed with os_log. if (FSType == Sema::FST_OSLog && CS.getKind() == ConversionSpecifier::nArg) { EmitFormatDiagnostic(S.PDiag(diag::warn_os_log_format_narg), getLocationOfByte(CS.getStart()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); return true; } // Only scalars are allowed for os_trace. if (FSType == Sema::FST_OSTrace && (CS.getKind() == ConversionSpecifier::PArg || CS.getKind() == ConversionSpecifier::sArg || CS.getKind() == ConversionSpecifier::ObjCObjArg)) { a4081 18 // Check for use of public/private annotation outside of os_log(). if (FSType != Sema::FST_OSLog) { if (FS.isPublic().isSet()) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) << "public", getLocationOfByte(FS.isPublic().getPosition()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } if (FS.isPrivate().isSet()) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_annotation) << "private", getLocationOfByte(FS.isPrivate().getPosition()), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } } a4093 9 // Precision is mandatory for %P specifier. if (CS.getKind() == ConversionSpecifier::PArg && FS.getPrecision().getHowSpecified() == OptionalAmount::NotSpecified) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_P_no_precision), getLocationOfByte(startSpecifier), /*IsStringLocation*/ false, getSpecifierRange(startSpecifier, specifierLen)); } d4243 2 a4244 1 const analyze_printf::ArgType &AT = FS.getArgType(S.Context, isObjCContext()); d4299 1 a4299 1 if (isObjCContext() && d4340 2 a4341 2 bool success = fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, isObjCContext()); d4364 1 d4497 13 a4509 13 CheckScanfHandler(Sema &s, const FormatStringLiteral *fexpr, const Expr *origFormatExpr, Sema::FormatStringType type, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) : CheckFormatHandler(s, fexpr, origFormatExpr, type, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg) {} d4521 1 a4521 1 } // end anonymous namespace d4548 1 d4668 8 a4675 10 static void CheckFormatString(Sema &S, const FormatStringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs, UncoveredArgHandler &UncoveredArg) { d4679 2 a4680 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_format_string_is_wide_literal), FExpr->getLocStart(), d4684 1 a4684 1 d4689 1 a4689 2 const ConstantArrayType *T = S.Context.getAsConstantArrayType(FExpr->getType()); d4700 2 a4701 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_printf_format_string_not_null_terminated), d4710 2 a4711 2 S, inFunctionCall, Args[format_idx], S.PDiag(diag::warn_empty_format_string), FExpr->getLocStart(), d4715 8 a4722 10 if (Type == Sema::FST_Printf || Type == Sema::FST_NSString || Type == Sema::FST_FreeBSDKPrintf || Type == Sema::FST_OSLog || Type == Sema::FST_OSTrace) { CheckPrintfHandler H( S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, (Type == Sema::FST_NSString || Type == Sema::FST_OSTrace), Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); d4724 3 a4726 3 S.getLangOpts(), S.Context.getTargetInfo(), Type == Sema::FST_FreeBSDKPrintf)) d4728 5 a4732 5 } else if (Type == Sema::FST_Scanf) { CheckScanfHandler H(S, FExpr, OrigFormatExpr, Type, firstDataArg, numDataArgs, Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs, UncoveredArg); d4734 2 a4735 2 S.getLangOpts(), S.Context.getTargetInfo())) d5047 1 a5047 3 template static bool IsStdFunction(const FunctionDecl *FDecl, const char (&Str)[StrLen]) { d5050 11 a5060 1 if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr(Str)) d5062 2 a5063 1 if (!FDecl->isInStdNamespace()) d5071 2 a5072 1 const FunctionDecl *FDecl) { d5077 1 a5077 1 bool IsStdAbs = IsStdFunction(FDecl, "abs"); d5148 1 a5148 63 } //===--- CHECK: Warn on use of std::max and unsigned zero. r---------------===// void Sema::CheckMaxUnsignedZero(const CallExpr *Call, const FunctionDecl *FDecl) { if (!Call || !FDecl) return; // Ignore template specializations and macros. if (!ActiveTemplateInstantiations.empty()) return; if (Call->getExprLoc().isMacroID()) return; // Only care about the one template argument, two function parameter std::max if (Call->getNumArgs() != 2) return; if (!IsStdFunction(FDecl, "max")) return; const auto * ArgList = FDecl->getTemplateSpecializationArgs(); if (!ArgList) return; if (ArgList->size() != 1) return; // Check that template type argument is unsigned integer. const auto& TA = ArgList->get(0); if (TA.getKind() != TemplateArgument::Type) return; QualType ArgType = TA.getAsType(); if (!ArgType->isUnsignedIntegerType()) return; // See if either argument is a literal zero. auto IsLiteralZeroArg = [](const Expr* E) -> bool { const auto *MTE = dyn_cast(E); if (!MTE) return false; const auto *Num = dyn_cast(MTE->GetTemporaryExpr()); if (!Num) return false; if (Num->getValue() != 0) return false; return true; }; const Expr *FirstArg = Call->getArg(0); const Expr *SecondArg = Call->getArg(1); const bool IsFirstArgZero = IsLiteralZeroArg(FirstArg); const bool IsSecondArgZero = IsLiteralZeroArg(SecondArg); // Only warn when exactly one argument is zero. if (IsFirstArgZero == IsSecondArgZero) return; SourceRange FirstRange = FirstArg->getSourceRange(); SourceRange SecondRange = SecondArg->getSourceRange(); SourceRange ZeroRange = IsFirstArgZero ? FirstRange : SecondRange; Diag(Call->getExprLoc(), diag::warn_max_unsigned_zero) << IsFirstArgZero << Call->getCallee()->getSourceRange() << ZeroRange; // Deduce what parts to remove so that "std::max(0u, foo)" becomes "(foo)". SourceRange RemovalRange; if (IsFirstArgZero) { RemovalRange = SourceRange(FirstRange.getBegin(), SecondRange.getBegin().getLocWithOffset(-1)); } else { RemovalRange = SourceRange(getLocForEndOfToken(FirstRange.getEnd()), SecondRange.getEnd()); } Diag(Call->getExprLoc(), diag::note_remove_max_call) << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()) << FixItHint::CreateRemoval(RemovalRange); d5194 1 a5194 1 if (!RD || RD->isInvalidDecl()) d5250 1 a5250 2 unsigned ExpectedNumArgs = (BId == Builtin::BIstrndup || BId == Builtin::BIbzero ? 2 : 3); d5254 1 a5254 1 unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIbzero || d5256 1 a5256 2 unsigned LenArg = (BId == Builtin::BIbzero || BId == Builtin::BIstrndup ? 1 : 2); a5267 7 // Although widely used, 'bzero' is not a standard function. Be more strict // with the argument types before allowing diagnostics and only allow the // form bzero(ptr, sizeof(...)). QualType FirstArgTy = Call->getArg(0)->IgnoreParenImpCasts()->getType(); if (BId == Builtin::BIbzero && !FirstArgTy->getAs()) return; d5401 1 d5616 4 a5619 6 static const Expr *EvalVal(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl); static const Expr *EvalAddr(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl); d5627 2 a5628 2 const Expr *stackE = nullptr; SmallVector refVars; a5641 6 // Parameters are initalized in the calling scope, so taking the address // of a parameter reference doesn't need a warning. for (auto *DRE : refVars) if (isa(DRE->getDecl())) return; d5656 1 a5656 2 if (const DeclRefExpr *DR = dyn_cast(stackE)) { // address of local var a5663 7 // If there is an LValue->RValue conversion, then the value of the // reference type is used, not the reference. if (auto *ICE = dyn_cast(RetValExp)) { if (ICE->getCastKind() == CK_LValueToRValue) { return; } } d5671 1 a5671 1 const VarDecl *VD = cast(refVars[i]->getDecl()); d5675 2 a5676 2 SourceRange range = (i < e - 1) ? refVars[i + 1]->getSourceRange() : stackE->getSourceRange(); d5708 2 a5709 3 static const Expr *EvalAddr(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl) { d5726 1 a5726 1 const DeclRefExpr *DR = cast(E); d5732 1 a5732 1 if (const VarDecl *V = dyn_cast(DR->getDecl())) d5748 1 a5748 1 const UnaryOperator *U = cast(E); d5752 2 a5753 1 return nullptr; d5759 1 a5759 1 const BinaryOperator *B = cast(E); d5765 1 a5765 1 const Expr *Base = B->getLHS(); d5769 1 a5769 2 if (!Base->getType()->isPointerType()) Base = B->getRHS(); d5771 1 a5771 1 assert(Base->getType()->isPointerType()); d5778 1 a5778 1 const ConditionalOperator *C = cast(E); d5782 1 a5782 1 if (const Expr *LHSExpr = C->getLHS()) { d5785 1 a5785 1 if (const Expr *LHS = EvalAddr(LHSExpr, refVars, ParentDecl)) d5818 1 a5818 1 const Expr* SubExpr = cast(E)->getSubExpr(); d5848 3 a5850 3 if (const Expr *Result = EvalAddr(cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) d5852 1 d5854 1 a5854 1 d5861 1 d5864 18 a5881 22 static const Expr *EvalVal(const Expr *E, SmallVectorImpl &refVars, const Decl *ParentDecl) { do { // We should only be called for evaluating non-pointer expressions, or // expressions with a pointer type that are not used as references but // instead // are l-values (e.g., DeclRefExpr with a pointer type). // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. E = E->IgnoreParens(); switch (E->getStmtClass()) { case Stmt::ImplicitCastExprClass: { const ImplicitCastExpr *IE = cast(E); if (IE->getValueKind() == VK_LValue) { E = IE->getSubExpr(); continue; } return nullptr; d5883 5 d5889 5 a5893 3 case Stmt::ExprWithCleanupsClass: return EvalVal(cast(E)->getSubExpr(), refVars, ParentDecl); d5895 3 a5897 5 case Stmt::DeclRefExprClass: { // When we hit a DeclRefExpr we are looking at code that refers to a // variable's name. If it's not a reference variable we check if it has // local storage within the function, and if so, return the expression. const DeclRefExpr *DR = cast(E); d5899 4 a5902 3 // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingVariableOrCapture()) return nullptr; d5904 2 a5905 3 if (const VarDecl *V = dyn_cast(DR->getDecl())) { // Check if it refers to itself, e.g. "int& i = i;". if (V == ParentDecl) d5908 6 a5913 11 if (V->hasLocalStorage()) { if (!V->getType()->isReferenceType()) return DR; // Reference variable, follow through to the expression that // it points to. if (V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalVal(V->getInit(), refVars, V); } d5916 1 d5918 11 a5928 2 return nullptr; } d5930 2 a5931 5 case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is Deref. All others don't resolve to a "name." This includes // handling all sorts of rvalues passed to a unary operator. const UnaryOperator *U = cast(E); d5933 6 a5938 2 if (U->getOpcode() == UO_Deref) return EvalAddr(U->getSubExpr(), refVars, ParentDecl); d5940 4 a5943 2 return nullptr; } d5945 4 a5948 9 case Stmt::ArraySubscriptExprClass: { // Array subscripts are potential references to data on the stack. We // retrieve the DeclRefExpr* for the array variable if it indeed // has local storage. const auto *ASE = cast(E); if (ASE->isTypeDependent()) return nullptr; return EvalAddr(ASE->getBase(), refVars, ParentDecl); } d5950 6 a5955 3 case Stmt::OMPArraySectionExprClass: { return EvalAddr(cast(E)->getBase(), refVars, ParentDecl); d5958 3 a5960 12 case Stmt::ConditionalOperatorClass: { // For conditional operators we need to see if either the LHS or RHS are // non-NULL Expr's. If one is non-NULL, we return it. const ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (const Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (const Expr *LHS = EvalVal(LHSExpr, refVars, ParentDecl)) return LHS; } d5962 2 a5963 3 // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return nullptr; d5965 3 a5967 2 return EvalVal(C->getRHS(), refVars, ParentDecl); } d5969 3 a5971 3 // Accesses to members are potential references to data on the stack. case Stmt::MemberExprClass: { const MemberExpr *M = cast(E); d5973 4 a5976 3 // Check for indirect access. We only want direct field accesses. if (M->isArrow()) return nullptr; d5978 2 a5979 5 // Check whether the member type is itself a reference, in which case // we're not going to refer to the member, but to what the member refers // to. if (M->getMemberDecl()->getType()->isReferenceType()) return nullptr; d5981 7 a5987 2 return EvalVal(M->getBase(), refVars, ParentDecl); } d5989 4 a5992 5 case Stmt::MaterializeTemporaryExprClass: if (const Expr *Result = EvalVal(cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; d5995 4 a5998 10 default: // Check that we don't return or take the address of a reference to a // temporary. This is only useful in C++. if (!E->isTypeDependent() && E->isRValue()) return E; // Everything else: we simply don't reason about them. return nullptr; } } while (true); d6050 1 d6176 2 a6177 1 IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { d6189 2 a6190 2 IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { d6218 1 a6218 1 QualType GetExprType(const Expr *E) { d6229 1 a6229 1 IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) { d6240 1 a6240 1 if (const auto *CE = dyn_cast(E)) { d6267 1 a6267 1 if (const auto *CO = dyn_cast(E)) { d6281 1 a6281 1 if (const auto *BO = dyn_cast(E)) { d6421 1 a6421 1 if (const auto *UO = dyn_cast(E)) { d6437 1 a6437 1 if (const auto *OVE = dyn_cast(E)) d6440 1 a6440 1 if (const auto *BitField = E->getSourceBitField()) d6447 1 a6447 1 IntRange GetExprRange(ASTContext &C, const Expr *E) { d6454 3 a6456 3 bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d6471 3 a6473 3 bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d6489 1 a6489 1 void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); d6491 1 a6491 1 bool IsZero(Sema &S, Expr *E) { d6506 1 a6506 1 bool HasEnumType(Expr *E) { d6518 1 a6518 1 void CheckTrivialUnsignedComparison(Sema &S, BinaryOperator *E) { d6546 4 a6549 3 void DiagnoseOutOfRangeComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, const llvm::APSInt &Value, bool RhsConstant) { d6757 1 a6757 1 void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { d6765 1 a6765 1 void AnalyzeComparison(Sema &S, BinaryOperator *E) { d6866 2 a6867 2 bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { a6872 18 QualType BitfieldType = Bitfield->getType(); if (BitfieldType->isBooleanType()) return false; if (BitfieldType->isEnumeralType()) { EnumDecl *BitfieldEnumDecl = BitfieldType->getAs()->getDecl(); // If the underlying enum type was not explicitly specified as an unsigned // type and the enum contain only positive values, MSVC++ will cause an // inconsistency by storing this as a signed type. if (S.getLangOpts().CPlusPlus11 && !BitfieldEnumDecl->getIntegerTypeSourceInfo() && BitfieldEnumDecl->getNumPositiveBits() > 0 && BitfieldEnumDecl->getNumNegativeBits() == 0) { S.Diag(InitLoc, diag::warn_no_underlying_type_specified_for_enum_bitfield) << BitfieldEnumDecl->getNameAsString(); } } a6891 5 if (!Value.isSigned() || Value.isNegative()) if (UnaryOperator *UO = dyn_cast(OriginalInit)) if (UO->getOpcode() == UO_Minus || UO->getOpcode() == UO_Not) OriginalWidth = Value.getMinSignedBits(); d6897 1 a6897 1 TruncatedValue.setIsSigned(BitfieldType->isSignedIntegerType()); d6921 1 a6921 1 void AnalyzeAssignment(Sema &S, BinaryOperator *E) { d6940 3 a6942 3 void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d6955 3 a6957 2 void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d6961 5 a6965 25 /// Diagnose an implicit cast from a floating point value to an integer value. void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext) { const bool IsBool = T->isSpecificBuiltinType(BuiltinType::Bool); const bool PruneWarnings = !S.ActiveTemplateInstantiations.empty(); Expr *InnerE = E->IgnoreParenImpCasts(); // We also want to warn on, e.g., "int i = -1.234" if (UnaryOperator *UOp = dyn_cast(InnerE)) if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); const bool IsLiteral = isa(E) || isa(InnerE); llvm::APFloat Value(0.0); bool IsConstant = E->EvaluateAsFloat(Value, S.Context, Expr::SE_AllowSideEffects); if (!IsConstant) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } d6967 1 a6967 1 d6970 4 a6973 35 if (Value.convertToInteger(IntegerValue, llvm::APFloat::rmTowardZero, &isExact) == llvm::APFloat::opOK && isExact) { if (IsLiteral) return; return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } unsigned DiagID = 0; if (IsLiteral) { // Warn on floating point literal to integer. DiagID = diag::warn_impcast_literal_float_to_integer; } else if (IntegerValue == 0) { if (Value.isZero()) { // Skip -0.0 to 0 conversion. return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } // Warn on non-zero to zero conversion. DiagID = diag::warn_impcast_float_to_integer_zero; } else { if (IntegerValue.isUnsigned()) { if (!IntegerValue.isMaxValue()) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } } else { // IntegerValue.isSigned() if (!IntegerValue.isMaxSignedValue() && !IntegerValue.isMinSignedValue()) { return DiagnoseImpCast(S, E, T, CContext, diag::warn_impcast_float_integer, PruneWarnings); } } // Warn on evaluatable floating point expression to integer conversion. DiagID = diag::warn_impcast_float_to_integer; } d6986 1 a6986 1 if (IsBool) d6991 3 a6993 11 if (PruneWarnings) { S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(DiagID) << E->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext)); } else { S.Diag(E->getExprLoc(), DiagID) << E->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << E->getSourceRange() << SourceRange(CContext); } d7005 1 a7005 1 bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { d7045 2 a7046 1 void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { a7067 9 // Venture through the macro stacks to get to the source of macro arguments. // The new location is a better location than the complete location that was // passed in. while (S.SourceMgr.isMacroArgExpansion(Loc)) Loc = S.SourceMgr.getImmediateMacroCallerLoc(Loc); while (S.SourceMgr.isMacroArgExpansion(CC)) CC = S.SourceMgr.getImmediateMacroCallerLoc(CC); d7069 7 a7075 5 if (NullKind == Expr::NPCK_GNUNull && Loc.isMacroID()) { StringRef MacroName = Lexer::getImmediateMacroNameForDiagnostics( Loc, S.SourceMgr, S.getLangOpts()); if (MacroName == "NULL") Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; d7088 4 a7091 4 void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); d7095 4 a7098 2 void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { d7127 2 a7128 2 void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { d7155 3 a7157 2 void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { a7182 26 // Helper function to filter out cases for constant width constant conversion. // Don't warn on char array initialization or for non-decimal values. bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { // If initializing from a constant, and the constant starts with '0', // then it is a binary, octal, or hexadecimal. Allow these constants // to fill all the bits, even if there is a sign change. if (auto *IntLit = dyn_cast(E->IgnoreParenImpCasts())) { const char FirstLiteralCharacter = S.getSourceManager().getCharacterData(IntLit->getLocStart())[0]; if (FirstLiteralCharacter == '0') return false; } // If the CC location points to a '{', and the type is char, then assume // assume it is an array initialization. if (CC.isValid() && T->isCharType()) { const char FirstContextCharacter = S.getSourceManager().getCharacterData(CC)[0]; if (FirstContextCharacter == '{') return false; } return true; } d7287 1 d7299 1 a7299 1 // If the target is integral, always warn. d7303 6 d7310 5 a7314 1 DiagnoseFloatingImpCast(S, E, T, CC); a7345 2 S.DiscardMisalignedMemberAddress(Target, E); d7361 1 a7361 1 if (E->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) { a7385 25 if (TargetRange.Width == SourceRange.Width && !TargetRange.NonNegative && SourceRange.NonNegative && Source->isSignedIntegerType()) { // Warn when doing a signed to signed conversion, warn if the positive // source value is exactly the width of the target type, which will // cause a negative value to be stored. llvm::APSInt Value; if (E->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects) && !S.SourceMgr.isInSystemMacro(CC)) { if (isSameWidthConstantConversion(S, E, T, CC)) { std::string PrettySourceValue = Value.toString(10); std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); S.DiagRuntimeBehavior( E->getExprLoc(), E, S.PDiag(diag::warn_impcast_integer_precision_constant) << PrettySourceValue << PrettyTargetValue << E->getType() << T << E->getSourceRange() << clang::SourceRange(CC)); return; } } // Fall through for non-constants to give a sign conversion warning. } d7389 1 d7432 2 d7449 1 d7482 1 a7482 1 void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { a7585 15 /// Diagnose integer type and any valid implicit convertion to it. static bool checkOpenCLEnqueueIntType(Sema &S, Expr *E, const QualType &IntT) { // Taking into account implicit conversions, // allow any integer. if (!E->getType()->isIntegerType()) { S.Diag(E->getLocStart(), diag::err_opencl_enqueue_kernel_invalid_local_size_type); return true; } // Potentially emit standard warnings for implicit conversions if enabled // using -Wconversion. CheckImplicitConversion(S, E, IntT, E->getLocStart()); return false; } d7589 1 a7589 1 const PartialDiagnostic &PD) { d7684 1 a7684 2 auto ComplainAboutNonnullParamOrCall = [&](const Attr *NonnullAttr) { bool IsParam = isa(NonnullAttr); a7691 1 Diag(NonnullAttr->getLocation(), diag::note_declared_nonnull) << IsParam; d7697 2 a7698 2 if (const Attr *A = Callee->getAttr()) { ComplainAboutNonnullParamOrCall(A); d7720 2 a7721 2 if (const Attr *A = PV->getAttr()) { ComplainAboutNonnullParamOrCall(A); d7726 1 a7726 1 auto ParamIter = llvm::find(FD->parameters(), PV); d7732 1 a7732 1 ComplainAboutNonnullParamOrCall(NonNull); d7738 1 a7738 1 ComplainAboutNonnullParamOrCall(NonNull); d7820 1 d7855 6 a7860 14 // Use a work list to deal with nested struct initializers. SmallVector Exprs(1, E); do { Expr *E = Exprs.pop_back_val(); if (isa(E->IgnoreParenCasts())) { E->IgnoreParenCasts()->EvaluateForOverflow(Context); continue; } if (auto InitList = dyn_cast(E)) Exprs.append(InitList->inits().begin(), InitList->inits().end()); } while (!Exprs.empty()); d7878 1 a7878 1 unsigned Merged : 1; d7990 3 a7992 2 for (auto &M : llvm::reverse(ModAsSideEffect)) { UsageInfo &U = Self.UsageMap[M.first]; d7994 2 a7995 2 Self.addUsage(U, M.first, SideEffectUsage.Use, UK_ModAsValue); SideEffectUsage = M.second; a8197 1 d8347 1 a8347 1 } // end anonymous namespace d8361 1 a8361 2 if (!E->isInstantiationDependent()) CheckUnsequencedOperations(E); a8363 1 DiagnoseMisalignedMembers(); d8406 2 a8407 1 bool Sema::CheckParmsForFunctionDef(ArrayRef Parameters, d8410 3 a8412 1 for (ParmVarDecl *Param : Parameters) { a8476 13 /// A helper function to get the alignment of a Decl referred to by DeclRefExpr /// or MemberExpr. static CharUnits getDeclAlign(Expr *E, CharUnits TypeAlign, ASTContext &Context) { if (const auto *DRE = dyn_cast(E)) return Context.getDeclAlign(DRE->getDecl()); if (const auto *ME = dyn_cast(E)) return Context.getDeclAlign(ME->getMemberDecl()); return TypeAlign; } a8510 9 if (auto *CE = dyn_cast(Op)) { if (CE->getCastKind() == CK_ArrayToPointerDecay) SrcAlign = getDeclAlign(CE->getSubExpr(), SrcAlign, Context); } else if (auto *UO = dyn_cast(Op)) { if (UO->getOpcode() == UO_AddrOf) SrcAlign = getDeclAlign(UO->getSubExpr(), SrcAlign, Context); } d8520 9 d8534 1 a8534 1 static bool IsTailPaddedMemberArray(Sema &S, const llvm::APInt &Size, d8583 1 a8583 2 const Type *EffectiveType = BaseExpr->getType()->getPointeeOrArrayElementType(); d8607 1 a8607 1 const Type *BaseType = BaseExpr->getType()->getPointeeOrArrayElementType(); d8757 1 a8757 1 } // end anonymous namespace d8903 1 a8903 1 } // end anonymous namespace d9139 1 d9343 1 a9343 1 } // end anonymous namespace d9439 1 d9678 1 a9678 1 } // end anonymous namespace d9809 1 a9809 1 } // end anonymous namespace d9842 1 a9842 1 } // end anonymous namespace a9921 148 void Sema::AddPotentialMisalignedMembers(Expr *E, RecordDecl *RD, ValueDecl *MD, CharUnits Alignment) { MisalignedMembers.emplace_back(E, RD, MD, Alignment); } void Sema::DiagnoseMisalignedMembers() { for (MisalignedMember &m : MisalignedMembers) { const NamedDecl *ND = m.RD; if (ND->getName().empty()) { if (const TypedefNameDecl *TD = m.RD->getTypedefNameForAnonDecl()) ND = TD; } Diag(m.E->getLocStart(), diag::warn_taking_address_of_packed_member) << m.MD << ND << m.E->getSourceRange(); } MisalignedMembers.clear(); } void Sema::DiscardMisalignedMemberAddress(const Type *T, Expr *E) { E = E->IgnoreParens(); if (!T->isPointerType() && !T->isIntegerType()) return; if (isa(E) && cast(E)->getOpcode() == UO_AddrOf) { auto *Op = cast(E)->getSubExpr()->IgnoreParens(); if (isa(Op)) { auto MA = std::find(MisalignedMembers.begin(), MisalignedMembers.end(), MisalignedMember(Op)); if (MA != MisalignedMembers.end() && (T->isIntegerType() || (T->isPointerType() && Context.getTypeAlignInChars(T->getPointeeType()) <= MA->Alignment))) MisalignedMembers.erase(MA); } } } void Sema::RefersToMemberWithReducedAlignment( Expr *E, llvm::function_ref Action) { const auto *ME = dyn_cast(E); if (!ME) return; // For a chain of MemberExpr like "a.b.c.d" this list // will keep FieldDecl's like [d, c, b]. SmallVector ReverseMemberChain; const MemberExpr *TopME = nullptr; bool AnyIsPacked = false; do { QualType BaseType = ME->getBase()->getType(); if (ME->isArrow()) BaseType = BaseType->getPointeeType(); RecordDecl *RD = BaseType->getAs()->getDecl(); ValueDecl *MD = ME->getMemberDecl(); auto *FD = dyn_cast(MD); // We do not care about non-data members. if (!FD || FD->isInvalidDecl()) return; AnyIsPacked = AnyIsPacked || (RD->hasAttr() || MD->hasAttr()); ReverseMemberChain.push_back(FD); TopME = ME; ME = dyn_cast(ME->getBase()->IgnoreParens()); } while (ME); assert(TopME && "We did not compute a topmost MemberExpr!"); // Not the scope of this diagnostic. if (!AnyIsPacked) return; const Expr *TopBase = TopME->getBase()->IgnoreParenImpCasts(); const auto *DRE = dyn_cast(TopBase); // TODO: The innermost base of the member expression may be too complicated. // For now, just disregard these cases. This is left for future // improvement. if (!DRE && !isa(TopBase)) return; // Alignment expected by the whole expression. CharUnits ExpectedAlignment = Context.getTypeAlignInChars(E->getType()); // No need to do anything else with this case. if (ExpectedAlignment.isOne()) return; // Synthesize offset of the whole access. CharUnits Offset; for (auto I = ReverseMemberChain.rbegin(); I != ReverseMemberChain.rend(); I++) { Offset += Context.toCharUnitsFromBits(Context.getFieldOffset(*I)); } // Compute the CompleteObjectAlignment as the alignment of the whole chain. CharUnits CompleteObjectAlignment = Context.getTypeAlignInChars( ReverseMemberChain.back()->getParent()->getTypeForDecl()); // The base expression of the innermost MemberExpr may give // stronger guarantees than the class containing the member. if (DRE && !TopME->isArrow()) { const ValueDecl *VD = DRE->getDecl(); if (!VD->getType()->isReferenceType()) CompleteObjectAlignment = std::max(CompleteObjectAlignment, Context.getDeclAlign(VD)); } // Check if the synthesized offset fulfills the alignment. if (Offset % ExpectedAlignment != 0 || // It may fulfill the offset it but the effective alignment may still be // lower than the expected expression alignment. CompleteObjectAlignment < ExpectedAlignment) { // If this happens, we want to determine a sensible culprit of this. // Intuitively, watching the chain of member expressions from right to // left, we start with the required alignment (as required by the field // type) but some packed attribute in that chain has reduced the alignment. // It may happen that another packed structure increases it again. But if // we are here such increase has not been enough. So pointing the first // FieldDecl that either is packed or else its RecordDecl is, // seems reasonable. FieldDecl *FD = nullptr; CharUnits Alignment; for (FieldDecl *FDI : ReverseMemberChain) { if (FDI->hasAttr() || FDI->getParent()->hasAttr()) { FD = FDI; Alignment = std::min( Context.getTypeAlignInChars(FD->getType()), Context.getTypeAlignInChars(FD->getParent()->getTypeForDecl())); break; } } assert(FD && "We did not find a packed FieldDecl!"); Action(E, FD->getParent(), FD, Alignment); } } void Sema::CheckAddressOfPackedMember(Expr *rhs) { using namespace std::placeholders; RefersToMemberWithReducedAlignment( rhs, std::bind(&Sema::AddPotentialMisalignedMembers, std::ref(*this), _1, _2, _3, _4)); } @ 1.1.1.11.2.1 log @Sync with HEAD @ text @d2429 1 a2429 2 /// functions, NULL arguments passed to non-NULL parameters, and diagnose_if /// attributes. d2431 3 a2433 3 const Expr *ThisArg, ArrayRef Args, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { a2479 3 if (FD) diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc); d2490 2 a2491 2 checkCall(FDecl, Proto, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); a2505 2 Expr *ImplicitThis = nullptr; a2509 1 ImplicitThis = Args[0]; d2512 2 a2513 5 } else if (IsMemberFunction) ImplicitThis = cast(TheCall)->getImplicitObjectArgument(); checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs), d2549 2 a2550 2 checkCall(Method, nullptr, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), d2579 1 a2579 1 checkCall(NDecl, Proto, /*ThisArg=*/nullptr, d2592 1 a2592 1 checkCall(/*FDecl=*/nullptr, Proto, /*ThisArg=*/nullptr, @ 1.1.1.12 log @Import Clang 4.0RC1 r294123. @ text @d2429 1 a2429 2 /// functions, NULL arguments passed to non-NULL parameters, and diagnose_if /// attributes. d2431 3 a2433 3 const Expr *ThisArg, ArrayRef Args, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { a2479 3 if (FD) diagnoseArgDependentDiagnoseIfAttrs(FD, ThisArg, Args, Loc); d2490 2 a2491 2 checkCall(FDecl, Proto, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); a2505 2 Expr *ImplicitThis = nullptr; a2509 1 ImplicitThis = Args[0]; d2512 2 a2513 5 } else if (IsMemberFunction) ImplicitThis = cast(TheCall)->getImplicitObjectArgument(); checkCall(FDecl, Proto, ImplicitThis, llvm::makeArrayRef(Args, NumArgs), d2549 2 a2550 2 checkCall(Method, nullptr, /*ThisArg=*/nullptr, Args, /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), d2579 1 a2579 1 checkCall(NDecl, Proto, /*ThisArg=*/nullptr, d2592 1 a2592 1 checkCall(/*FDecl=*/nullptr, Proto, /*ThisArg=*/nullptr, @ 1.1.1.13 log @Import clang r309604 from branches/release_50 @ text @d247 1 a247 1 if (SemaRef.inTemplateInstantiation()) d312 1 a312 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; d318 1 a318 1 /// Diagnose integer type and any valid implicit conversion to it. d397 2 a398 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << S.Context.OCLQueueTy; d405 2 a406 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "'kernel_enqueue_flags_t' (i.e. uint)"; d411 1 a411 1 if (Arg2->getType().getUnqualifiedType().getAsString() != "ndrange_t") { d413 2 a414 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "'ndrange_t'"; d423 2 a424 2 S.Diag(Arg3->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; d446 2 a447 2 S.Diag(Arg6->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; d456 2 a457 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "integer"; d469 1 a469 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() d480 1 a480 2 diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() a759 1 case Builtin::BI__builtin_ms_va_start: d762 1 a762 1 if (SemaBuiltinVAStart(BuiltinID, TheCall)) d773 1 a773 1 if (SemaBuiltinVAStart(BuiltinID, TheCall)) d1394 2 d1442 2 d1622 1 d1629 1 d1636 1 d1643 1 d1647 1 a1647 1 case Mips::BI__builtin_msa_ldi_b: i = 0; l = -128; u = 255; break; a1706 3 case PPC::BI__builtin_vsx_xxpermdi: case PPC::BI__builtin_vsx_xxsldwi: return SemaBuiltinVSX(TheCall); a1743 1 case SystemZ::BI__builtin_s390_vfisb: a1746 1 case SystemZ::BI__builtin_s390_vftcisb: a1762 5 case SystemZ::BI__builtin_s390_vmslg: i = 3; l = 0; u = 15; break; case SystemZ::BI__builtin_s390_vfminsb: case SystemZ::BI__builtin_s390_vfmaxsb: case SystemZ::BI__builtin_s390_vfmindb: case SystemZ::BI__builtin_s390_vfmaxdb: i = 2; l = 0; u = 15; break; a1992 103 // Check if the gather/scatter scale is legal. bool Sema::CheckX86BuiltinGatherScatterScale(unsigned BuiltinID, CallExpr *TheCall) { unsigned ArgNum = 0; switch (BuiltinID) { default: return false; case X86::BI__builtin_ia32_gatherpfdpd: case X86::BI__builtin_ia32_gatherpfdps: case X86::BI__builtin_ia32_gatherpfqpd: case X86::BI__builtin_ia32_gatherpfqps: case X86::BI__builtin_ia32_scatterpfdpd: case X86::BI__builtin_ia32_scatterpfdps: case X86::BI__builtin_ia32_scatterpfqpd: case X86::BI__builtin_ia32_scatterpfqps: ArgNum = 3; break; case X86::BI__builtin_ia32_gatherd_pd: case X86::BI__builtin_ia32_gatherd_pd256: case X86::BI__builtin_ia32_gatherq_pd: case X86::BI__builtin_ia32_gatherq_pd256: case X86::BI__builtin_ia32_gatherd_ps: case X86::BI__builtin_ia32_gatherd_ps256: case X86::BI__builtin_ia32_gatherq_ps: case X86::BI__builtin_ia32_gatherq_ps256: case X86::BI__builtin_ia32_gatherd_q: case X86::BI__builtin_ia32_gatherd_q256: case X86::BI__builtin_ia32_gatherq_q: case X86::BI__builtin_ia32_gatherq_q256: case X86::BI__builtin_ia32_gatherd_d: case X86::BI__builtin_ia32_gatherd_d256: case X86::BI__builtin_ia32_gatherq_d: case X86::BI__builtin_ia32_gatherq_d256: case X86::BI__builtin_ia32_gather3div2df: case X86::BI__builtin_ia32_gather3div2di: case X86::BI__builtin_ia32_gather3div4df: case X86::BI__builtin_ia32_gather3div4di: case X86::BI__builtin_ia32_gather3div4sf: case X86::BI__builtin_ia32_gather3div4si: case X86::BI__builtin_ia32_gather3div8sf: case X86::BI__builtin_ia32_gather3div8si: case X86::BI__builtin_ia32_gather3siv2df: case X86::BI__builtin_ia32_gather3siv2di: case X86::BI__builtin_ia32_gather3siv4df: case X86::BI__builtin_ia32_gather3siv4di: case X86::BI__builtin_ia32_gather3siv4sf: case X86::BI__builtin_ia32_gather3siv4si: case X86::BI__builtin_ia32_gather3siv8sf: case X86::BI__builtin_ia32_gather3siv8si: case X86::BI__builtin_ia32_gathersiv8df: case X86::BI__builtin_ia32_gathersiv16sf: case X86::BI__builtin_ia32_gatherdiv8df: case X86::BI__builtin_ia32_gatherdiv16sf: case X86::BI__builtin_ia32_gathersiv8di: case X86::BI__builtin_ia32_gathersiv16si: case X86::BI__builtin_ia32_gatherdiv8di: case X86::BI__builtin_ia32_gatherdiv16si: case X86::BI__builtin_ia32_scatterdiv2df: case X86::BI__builtin_ia32_scatterdiv2di: case X86::BI__builtin_ia32_scatterdiv4df: case X86::BI__builtin_ia32_scatterdiv4di: case X86::BI__builtin_ia32_scatterdiv4sf: case X86::BI__builtin_ia32_scatterdiv4si: case X86::BI__builtin_ia32_scatterdiv8sf: case X86::BI__builtin_ia32_scatterdiv8si: case X86::BI__builtin_ia32_scattersiv2df: case X86::BI__builtin_ia32_scattersiv2di: case X86::BI__builtin_ia32_scattersiv4df: case X86::BI__builtin_ia32_scattersiv4di: case X86::BI__builtin_ia32_scattersiv4sf: case X86::BI__builtin_ia32_scattersiv4si: case X86::BI__builtin_ia32_scattersiv8sf: case X86::BI__builtin_ia32_scattersiv8si: case X86::BI__builtin_ia32_scattersiv8df: case X86::BI__builtin_ia32_scattersiv16sf: case X86::BI__builtin_ia32_scatterdiv8df: case X86::BI__builtin_ia32_scatterdiv16sf: case X86::BI__builtin_ia32_scattersiv8di: case X86::BI__builtin_ia32_scattersiv16si: case X86::BI__builtin_ia32_scatterdiv8di: case X86::BI__builtin_ia32_scatterdiv16si: ArgNum = 4; break; } llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; if (Result == 1 || Result == 2 || Result == 4 || Result == 8) return false; return Diag(TheCall->getLocStart(), diag::err_x86_builtin_invalid_scale) << Arg->getSourceRange(); } d1997 3 a2003 4 // If the intrinsic has a gather/scatter scale immediate make sure its valid. if (CheckX86BuiltinGatherScatterScale(BuiltinID, TheCall)) return true; a2199 10 case X86::BI__builtin_ia32_gatherpfdpd: case X86::BI__builtin_ia32_gatherpfdps: case X86::BI__builtin_ia32_gatherpfqpd: case X86::BI__builtin_ia32_gatherpfqps: case X86::BI__builtin_ia32_scatterpfdpd: case X86::BI__builtin_ia32_scatterpfdps: case X86::BI__builtin_ia32_scatterpfqpd: case X86::BI__builtin_ia32_scatterpfqps: i = 4; l = 2; u = 3; break; a3504 74 /// Check that the user is calling the appropriate va_start builtin for the /// target and calling convention. static bool checkVAStartABI(Sema &S, unsigned BuiltinID, Expr *Fn) { const llvm::Triple &TT = S.Context.getTargetInfo().getTriple(); bool IsX64 = TT.getArch() == llvm::Triple::x86_64; bool IsAArch64 = TT.getArch() == llvm::Triple::aarch64; bool IsWindows = TT.isOSWindows(); bool IsMSVAStart = BuiltinID == Builtin::BI__builtin_ms_va_start; if (IsX64 || IsAArch64) { clang::CallingConv CC = CC_C; if (const FunctionDecl *FD = S.getCurFunctionDecl()) CC = FD->getType()->getAs()->getCallConv(); if (IsMSVAStart) { // Don't allow this in System V ABI functions. if (CC == CC_X86_64SysV || (!IsWindows && CC != CC_Win64)) return S.Diag(Fn->getLocStart(), diag::err_ms_va_start_used_in_sysv_function); } else { // On x86-64/AArch64 Unix, don't allow this in Win64 ABI functions. // On x64 Windows, don't allow this in System V ABI functions. // (Yes, that means there's no corresponding way to support variadic // System V ABI functions on Windows.) if ((IsWindows && CC == CC_X86_64SysV) || (!IsWindows && CC == CC_Win64)) return S.Diag(Fn->getLocStart(), diag::err_va_start_used_in_wrong_abi_function) << !IsWindows; } return false; } if (IsMSVAStart) return S.Diag(Fn->getLocStart(), diag::err_builtin_x64_aarch64_only); return false; } static bool checkVAStartIsInVariadicFunction(Sema &S, Expr *Fn, ParmVarDecl **LastParam = nullptr) { // Determine whether the current function, block, or obj-c method is variadic // and get its parameter list. bool IsVariadic = false; ArrayRef Params; DeclContext *Caller = S.CurContext; if (auto *Block = dyn_cast(Caller)) { IsVariadic = Block->isVariadic(); Params = Block->parameters(); } else if (auto *FD = dyn_cast(Caller)) { IsVariadic = FD->isVariadic(); Params = FD->parameters(); } else if (auto *MD = dyn_cast(Caller)) { IsVariadic = MD->isVariadic(); // FIXME: This isn't correct for methods (results in bogus warning). Params = MD->parameters(); } else if (isa(Caller)) { // We don't support va_start in a CapturedDecl. S.Diag(Fn->getLocStart(), diag::err_va_start_captured_stmt); return true; } else { // This must be some other declcontext that parses exprs. S.Diag(Fn->getLocStart(), diag::err_va_start_outside_function); return true; } if (!IsVariadic) { S.Diag(Fn->getLocStart(), diag::err_va_start_fixed_function); return true; } if (LastParam) *LastParam = Params.empty() ? nullptr : Params.back(); return false; } d3508 1 a3508 1 bool Sema::SemaBuiltinVAStart(unsigned BuiltinID, CallExpr *TheCall) { a3509 4 if (checkVAStartABI(*this, BuiltinID, Fn)) return true; d3530 12 a3541 3 // Check that the current function is variadic, and get its last parameter. ParmVarDecl *LastParam; if (checkVAStartIsInVariadicFunction(*this, Fn, &LastParam)) d3543 1 d3558 10 a3567 1 SecondArgIsLastNamedArgument = PV == LastParam; d3602 42 d3655 16 a3674 4 // Check that the current function is variadic. if (checkVAStartIsInVariadicFunction(*this, Func)) return true; a3781 59 // Customized Sema Checking for VSX builtins that have the following signature: // vector [...] builtinName(vector [...], vector [...], const int); // Which takes the same type of vectors (any legal vector type) for the first // two arguments and takes compile time constant for the third argument. // Example builtins are : // vector double vec_xxpermdi(vector double, vector double, int); // vector short vec_xxsldwi(vector short, vector short, int); bool Sema::SemaBuiltinVSX(CallExpr *TheCall) { unsigned ExpectedNumArgs = 3; if (TheCall->getNumArgs() < ExpectedNumArgs) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << ExpectedNumArgs << TheCall->getNumArgs() << TheCall->getSourceRange(); if (TheCall->getNumArgs() > ExpectedNumArgs) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << ExpectedNumArgs << TheCall->getNumArgs() << TheCall->getSourceRange(); // Check the third argument is a compile time constant llvm::APSInt Value; if(!TheCall->getArg(2)->isIntegerConstantExpr(Value, Context)) return Diag(TheCall->getLocStart(), diag::err_vsx_builtin_nonconstant_argument) << 3 /* argument index */ << TheCall->getDirectCallee() << SourceRange(TheCall->getArg(2)->getLocStart(), TheCall->getArg(2)->getLocEnd()); QualType Arg1Ty = TheCall->getArg(0)->getType(); QualType Arg2Ty = TheCall->getArg(1)->getType(); // Check the type of argument 1 and argument 2 are vectors. SourceLocation BuiltinLoc = TheCall->getLocStart(); if ((!Arg1Ty->isVectorType() && !Arg1Ty->isDependentType()) || (!Arg2Ty->isVectorType() && !Arg2Ty->isDependentType())) { return Diag(BuiltinLoc, diag::err_vec_builtin_non_vector) << TheCall->getDirectCallee() << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd()); } // Check the first two arguments are the same type. if (!Context.hasSameUnqualifiedType(Arg1Ty, Arg2Ty)) { return Diag(BuiltinLoc, diag::err_vec_builtin_incompatible_vector) << TheCall->getDirectCallee() << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd()); } // When default clang type checking is turned off and the customized type // checking is used, the returning type of the function must be explicitly // set. Otherwise it is _Bool by default. TheCall->setType(Arg1Ty); return false; } d3804 1 a3804 2 diag::err_vec_builtin_non_vector) << TheCall->getDirectCallee() d3818 1 a3818 2 diag::err_vec_builtin_incompatible_vector) << TheCall->getDirectCallee() d3823 1 a3823 2 diag::err_vec_builtin_incompatible_vector) << TheCall->getDirectCallee() a5824 1 .Case("CFIndex", Context.LongTy) d6785 1 a6785 1 if (inTemplateInstantiation()) return; d7343 1 a7343 1 // Parameters are initialized in the calling scope, so taking the address d8238 1 a8238 1 if (S.inTemplateInstantiation()) d8268 1 a8268 1 if (S.inTemplateInstantiation()) a8618 1 unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); d8621 1 a8621 53 if (!OriginalInit->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) { // The RHS is not constant. If the RHS has an enum type, make sure the // bitfield is wide enough to hold all the values of the enum without // truncation. if (const auto *EnumTy = OriginalInit->getType()->getAs()) { EnumDecl *ED = EnumTy->getDecl(); bool SignedBitfield = BitfieldType->isSignedIntegerType(); // Enum types are implicitly signed on Windows, so check if there are any // negative enumerators to see if the enum was intended to be signed or // not. bool SignedEnum = ED->getNumNegativeBits() > 0; // Check for surprising sign changes when assigning enum values to a // bitfield of different signedness. If the bitfield is signed and we // have exactly the right number of bits to store this unsigned enum, // suggest changing the enum to an unsigned type. This typically happens // on Windows where unfixed enums always use an underlying type of 'int'. unsigned DiagID = 0; if (SignedEnum && !SignedBitfield) { DiagID = diag::warn_unsigned_bitfield_assigned_signed_enum; } else if (SignedBitfield && !SignedEnum && ED->getNumPositiveBits() == FieldWidth) { DiagID = diag::warn_signed_bitfield_enum_conversion; } if (DiagID) { S.Diag(InitLoc, DiagID) << Bitfield << ED; TypeSourceInfo *TSI = Bitfield->getTypeSourceInfo(); SourceRange TypeRange = TSI ? TSI->getTypeLoc().getSourceRange() : SourceRange(); S.Diag(Bitfield->getTypeSpecStartLoc(), diag::note_change_bitfield_sign) << SignedEnum << TypeRange; } // Compute the required bitwidth. If the enum has negative values, we need // one more bit than the normal number of positive bits to represent the // sign bit. unsigned BitsNeeded = SignedEnum ? std::max(ED->getNumPositiveBits() + 1, ED->getNumNegativeBits()) : ED->getNumPositiveBits(); // Check the bitwidth. if (BitsNeeded > FieldWidth) { Expr *WidthExpr = Bitfield->getBitWidth(); S.Diag(InitLoc, diag::warn_bitfield_too_small_for_enum) << Bitfield << ED; S.Diag(WidthExpr->getExprLoc(), diag::note_widen_bitfield) << BitsNeeded << ED << WidthExpr->getSourceRange(); } } a8622 1 } d8625 1 d8706 1 a8706 1 const bool PruneWarnings = S.inTemplateInstantiation(); a9722 3 if (isa(E)) E->IgnoreParenCasts()->EvaluateForOverflow(Context); a10611 6 case Stmt::CXXOperatorCallExprClass: { const auto *OCE = cast(expr); for (const auto *Arg : OCE->arguments()) CheckArrayAccess(Arg); return; } d11317 1 a11317 1 if (inTemplateInstantiation()) a11841 4 // No need to check expressions with an __unaligned-qualified type. if (E->getType().getQualifiers().hasUnaligned()) return; a11851 2 if (RD->isInvalidDecl()) return; @ 1.1.1.13.4.1 log @Sync with HEAD @ text @d1 1 a1 1 //===- SemaChecking.cpp - Extra Semantic Checking -------------------------===// a14 1 #include "clang/AST/APValue.h" a15 2 #include "clang/AST/Attr.h" #include "clang/AST/AttrIterator.h" a16 2 #include "clang/AST/Decl.h" #include "clang/AST/DeclBase.h" a18 1 #include "clang/AST/DeclarationName.h" d24 2 a25 8 #include "clang/AST/NSAPI.h" #include "clang/AST/NonTrivialTypeVisitor.h" #include "clang/AST/OperationKinds.h" #include "clang/AST/Stmt.h" #include "clang/AST/TemplateBase.h" #include "clang/AST/Type.h" #include "clang/AST/TypeLoc.h" #include "clang/AST/UnresolvedSet.h" a26 1 #include "clang/Basic/AddressSpaces.h" a27 11 #include "clang/Basic/Diagnostic.h" #include "clang/Basic/IdentifierTable.h" #include "clang/Basic/LLVM.h" #include "clang/Basic/LangOptions.h" #include "clang/Basic/OpenCLOptions.h" #include "clang/Basic/OperatorKinds.h" #include "clang/Basic/PartialDiagnostic.h" #include "clang/Basic/SourceLocation.h" #include "clang/Basic/SourceManager.h" #include "clang/Basic/Specifiers.h" #include "clang/Basic/SyncScope.h" a28 1 #include "clang/Basic/TargetCXXABI.h" a29 1 #include "clang/Basic/TypeTraits.h" a32 2 #include "clang/Sema/Ownership.h" #include "clang/Sema/Scope.h" a35 8 #include "llvm/ADT/APFloat.h" #include "llvm/ADT/APInt.h" #include "llvm/ADT/APSInt.h" #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/FoldingSet.h" #include "llvm/ADT/None.h" #include "llvm/ADT/Optional.h" a37 1 #include "llvm/ADT/SmallPtrSet.h" a38 7 #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/StringRef.h" #include "llvm/ADT/StringSwitch.h" #include "llvm/ADT/Triple.h" #include "llvm/Support/AtomicOrdering.h" #include "llvm/Support/Casting.h" #include "llvm/Support/Compiler.h" a39 1 #include "llvm/Support/ErrorHandling.h" a41 1 #include "llvm/Support/MathExtras.h" a42 9 #include #include #include #include #include #include #include #include #include a100 22 static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) { // We need at least one argument. if (TheCall->getNumArgs() < 1) { S.Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return true; } // All arguments should be wide string literals. for (Expr *Arg : TheCall->arguments()) { auto *Literal = dyn_cast(Arg->IgnoreParenCasts()); if (!Literal || !Literal->isWide()) { S.Diag(Arg->getLocStart(), diag::err_msvc_annotation_wide_str) << Arg->getSourceRange(); return true; } } return false; } d123 2 a124 2 ExprResult Arg = TheCall->getArg(I); QualType Ty = Arg.get()->getType(); d126 2 a127 2 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_int) << Ty << Arg.get()->getSourceRange(); a129 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(I, Arg.get()); d136 2 a137 2 ExprResult Arg = TheCall->getArg(2); QualType Ty = Arg.get()->getType(); d141 2 a142 3 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_ptr_int) << Ty << Arg.get()->getSourceRange(); a144 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(2, Arg.get()); d146 1 a301 35 static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) { if (!S.getOpenCLOptions().isEnabled("cl_khr_subgroups")) { S.Diag(Call->getLocStart(), diag::err_opencl_requires_extension) << 1 << Call->getDirectCallee() << "cl_khr_subgroups"; return true; } return false; } static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; if (checkOpenCLSubgroupExt(S, TheCall)) return true; // First argument is an ndrange_t type. Expr *NDRangeArg = TheCall->getArg(0); if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") { S.Diag(NDRangeArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "'ndrange_t'"; return true; } Expr *BlockArg = TheCall->getArg(1); if (!isBlockPointer(BlockArg)) { S.Diag(BlockArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; return true; } return checkOpenCLBlockArgs(S, BlockArg); } d575 1 a575 1 // Performs semantic analysis for the read/write_pipe call. d583 1 a583 1 case 2: d591 1 a591 1 break; d629 1 a629 1 // Performs a semantic analysis on the {work_group_/sub_group_ a649 5 // Since return type of reserve_read/write_pipe built-in function is // reserve_id_t, which is not defined in the builtin def file , we used int // as return type and need to override the return type of these functions. Call->setType(S.Context.OCLReserveIDTy); d653 1 a653 1 // Performs a semantic analysis on {work_group_/sub_group_ d676 1 a676 1 // Performs a semantic analysis on the call to built-in Pipe d693 2 a694 3 // OpenCL v2.0 s6.13.9 - Address space qualifier functions. // Performs semantic analysis for the to_global/local/private call. a723 3 case Builtin::BIto_private: Qual.setAddressSpace(LangAS::opencl_private); break; d725 1 a725 1 llvm_unreachable("Invalid builtin function"); a732 14 // Emit an error and return true if the current architecture is not in the list // of supported architectures. static bool CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall, ArrayRef SupportedArchs) { llvm::Triple::ArchType CurArch = S.getASTContext().getTargetInfo().getTriple().getArch(); if (llvm::is_contained(SupportedArchs, CurArch)) return false; S.Diag(TheCall->getLocStart(), diag::err_builtin_target_unsupported) << TheCall->getSourceRange(); return true; } d773 1 a773 1 if (SemaBuiltinVAStartARMMicrosoft(TheCall)) a782 27 // The acquire, release, and no fence variants are ARM and AArch64 only. case Builtin::BI_interlockedbittestandset_acq: case Builtin::BI_interlockedbittestandset_rel: case Builtin::BI_interlockedbittestandset_nf: case Builtin::BI_interlockedbittestandreset_acq: case Builtin::BI_interlockedbittestandreset_rel: case Builtin::BI_interlockedbittestandreset_nf: if (CheckBuiltinTargetSupport( *this, BuiltinID, TheCall, {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; // The 64-bit bittest variants are x64, ARM, and AArch64 only. case Builtin::BI_bittest64: case Builtin::BI_bittestandcomplement64: case Builtin::BI_bittestandreset64: case Builtin::BI_bittestandset64: case Builtin::BI_interlockedbittestandreset64: case Builtin::BI_interlockedbittestandset64: if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall, {llvm::Triple::x86_64, llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; a800 3 case Builtin::BI__builtin_signbit: case Builtin::BI__builtin_signbitf: case Builtin::BI__builtin_signbitl: d842 1 a961 4 case Builtin::BI__annotation: if (SemaBuiltinMSVCAnnotation(*this, TheCall)) return ExprError(); break; d977 7 a983 40 case Builtin::BI__builtin_operator_delete: { bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete; ExprResult Res = SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete); if (Res.isInvalid()) CorrectDelayedTyposInExpr(TheCallResult.get()); return Res; } case Builtin::BI__builtin_dump_struct: { // We first want to ensure we are called with 2 arguments if (checkArgCount(*this, TheCall, 2)) return ExprError(); // Ensure that the first argument is of type 'struct XX *' const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts(); const QualType PtrArgType = PtrArg->getType(); if (!PtrArgType->isPointerType() || !PtrArgType->getPointeeType()->isRecordType()) { Diag(PtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType << "structure pointer"; return ExprError(); } // Ensure that the second argument is of type 'FunctionType' const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts(); const QualType FnPtrArgType = FnPtrArg->getType(); if (!FnPtrArgType->isPointerType()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } const auto *FuncType = FnPtrArgType->getPointeeType()->getAs(); if (!FuncType) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; d986 3 a988 20 if (const auto *FT = dyn_cast(FuncType)) { if (!FT->getNumParams()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } QualType PT = FT->getParamType(0); if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy || !PT->isPointerType() || !PT->getPointeeType()->isCharType() || !PT->getPointeeType().isConstQualified()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } } TheCall->setType(Context.IntTy); a989 1 } a1050 3 if (SemaBuiltinReserveRWPipe(*this, TheCall)) return ExprError(); break; d1053 1 a1053 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinReserveRWPipe(*this, TheCall)) d1055 4 a1063 3 if (SemaBuiltinCommitRWPipe(*this, TheCall)) return ExprError(); break; d1066 1 a1066 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinCommitRWPipe(*this, TheCall)) a1090 5 case Builtin::BIget_kernel_max_sub_group_size_for_ndrange: case Builtin::BIget_kernel_sub_group_count_for_ndrange: if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall)) return ExprError(); break; d1093 1 a1093 1 if (SemaBuiltinOSLogFormat(TheCall)) d1095 1 a1114 4 case llvm::Triple::hexagon: if (CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; a1223 1 #include "clang/Basic/arm_fp16.inc" d1273 3 a1275 4 #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #include "clang/Basic/arm_fp16.inc" #undef GET_NEON_IMMEDIATE_CHECK d1425 1 a1425 1 // FIXME: VFP Intrinsics should error if VFP not present. d1428 2 a1429 8 case ARM::BI__builtin_arm_ssat: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32); case ARM::BI__builtin_arm_usat: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31); case ARM::BI__builtin_arm_ssat16: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); case ARM::BI__builtin_arm_usat16: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); d1431 1 a1431 2 case ARM::BI__builtin_arm_vcvtr_d: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); d1435 1 a1435 2 case ARM::BI__builtin_arm_dbg: return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15); d1437 3 a1483 1009 bool Sema::CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall) { static const std::map> ValidCPU = { { Hexagon::BI__builtin_HEXAGON_A6_vcmpbeq_notany, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_A6_vminub_RdP, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vsplatrbp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunehb_ppp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunohb_ppp, {"v62", "v65"} }, }; static const std::map> ValidHVX = { { Hexagon::BI__builtin_HEXAGON_V6_extractw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_extractw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh_128B, {"v60", "v62", "v65"} }, }; const TargetInfo &TI = Context.getTargetInfo(); auto FC = ValidCPU.find(BuiltinID); if (FC != ValidCPU.end()) { const TargetOptions &Opts = TI.getTargetOpts(); StringRef CPU = Opts.CPU; if (!CPU.empty()) { assert(CPU.startswith("hexagon") && "Unexpected CPU name"); CPU.consume_front("hexagon"); if (llvm::none_of(FC->second, [CPU](StringRef S) { return S == CPU; })) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_cpu); } } auto FH = ValidHVX.find(BuiltinID); if (FH != ValidHVX.end()) { if (!TI.hasFeature("hvx")) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_requires_hvx); bool IsValid = llvm::any_of(FH->second, [&TI] (StringRef V) { std::string F = "hvx" + V.str(); return TI.hasFeature(F); }); if (!IsValid) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_hvx); } return false; } bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { struct ArgInfo { ArgInfo(unsigned O, bool S, unsigned W, unsigned A) : OpNum(O), IsSigned(S), BitWidth(W), Align(A) {} unsigned OpNum = 0; bool IsSigned = false; unsigned BitWidth = 0; unsigned Align = 0; }; static const std::map> Infos = { { Hexagon::BI__builtin_circ_ldd, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_ldw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_ldh, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_lduh, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldub, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_std, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_stw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_sth, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_sthhi, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_stb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_A2_combineii, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrih, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfril, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrpi, {{ 0, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_bitspliti, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cround_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_bitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_muxii, {{ 2, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2, {{ 1, false, 6, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractu, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractup, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insert, {{ 2, false, 5, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insertp, {{ 2, false, 6, 0 }, { 3, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_setbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_valignib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_vspliceib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbaddi, {{ 1, true , 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi, {{ 1, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extract, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extractp, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_lsli, {{ 0, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc, {{ 3, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate, {{ 2, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {{ 3, false, 1, 0 }} }, }; auto F = Infos.find(BuiltinID); if (F == Infos.end()) return false; bool Error = false; for (const ArgInfo &A : F->second) { int32_t Min = A.IsSigned ? -(1 << (A.BitWidth-1)) : 0; int32_t Max = (1 << (A.IsSigned ? A.BitWidth-1 : A.BitWidth)) - 1; if (!A.Align) { Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max); } else { unsigned M = 1 << A.Align; Min *= M; Max *= M; Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) | SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M); } } return Error; } bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { return CheckHexagonBuiltinCpu(BuiltinID, TheCall) || CheckHexagonBuiltinArgument(BuiltinID, TheCall); } d1532 1 a1532 1 // These intrinsics take an unsigned 5 bit immediate. a1792 20 /// SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *). /// This checks that the target supports __builtin_cpu_is and /// that the string argument is constant and valid. static bool SemaBuiltinCpuIs(Sema &S, CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); // Check if the argument is a string literal. if (!isa(Arg->IgnoreParenImpCasts())) return S.Diag(TheCall->getLocStart(), diag::err_expr_not_string_literal) << Arg->getSourceRange(); // Check the contents of the string. StringRef Feature = cast(Arg->IgnoreParenImpCasts())->getString(); if (!S.Context.getTargetInfo().validateCpuIs(Feature)) return S.Diag(TheCall->getLocStart(), diag::err_invalid_cpu_is) << Arg->getSourceRange(); return false; } a1811 6 case X86::BI__builtin_ia32_maxpd512: case X86::BI__builtin_ia32_maxps512: case X86::BI__builtin_ia32_minpd512: case X86::BI__builtin_ia32_minps512: ArgNum = 2; break; d1841 2 d1845 2 a1884 2 case X86::BI__builtin_ia32_sqrtpd512: case X86::BI__builtin_ia32_sqrtps512: a1887 8 case X86::BI__builtin_ia32_addpd512: case X86::BI__builtin_ia32_addps512: case X86::BI__builtin_ia32_divpd512: case X86::BI__builtin_ia32_divps512: case X86::BI__builtin_ia32_mulpd512: case X86::BI__builtin_ia32_mulps512: case X86::BI__builtin_ia32_subpd512: case X86::BI__builtin_ia32_subps512: d1908 2 d1913 8 a1937 6 case X86::BI__builtin_ia32_vfmaddsd3_mask: case X86::BI__builtin_ia32_vfmaddsd3_maskz: case X86::BI__builtin_ia32_vfmaddsd3_mask3: case X86::BI__builtin_ia32_vfmaddss3_mask: case X86::BI__builtin_ia32_vfmaddss3_maskz: case X86::BI__builtin_ia32_vfmaddss3_mask3: d1939 1 a1940 2 case X86::BI__builtin_ia32_vfmaddpd512_mask3: case X86::BI__builtin_ia32_vfmsubpd512_mask3: d1942 1 a1943 2 case X86::BI__builtin_ia32_vfmaddps512_mask3: case X86::BI__builtin_ia32_vfmsubps512_mask3: d1945 1 a1946 2 case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: d1948 1 d1950 3 a1952 1 case X86::BI__builtin_ia32_vfmaddsubps512_mask3: d1954 12 a2101 11 static bool isX86_32Builtin(unsigned BuiltinID) { // These builtins only work on x86-32 targets. switch (BuiltinID) { case X86::BI__builtin_ia32_readeflags_u32: case X86::BI__builtin_ia32_writeeflags_u32: return true; } return false; } a2105 9 if (BuiltinID == X86::BI__builtin_cpu_is) return SemaBuiltinCpuIs(*this, TheCall); // Check for 32-bit only builtins on a 64-bit target. const llvm::Triple &TT = Context.getTargetInfo().getTriple(); if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID)) return Diag(TheCall->getCallee()->getLocStart(), diag::err_32_bit_builtin_64_bit_tgt); d2120 1 a2120 40 case X86::BI__builtin_ia32_vec_ext_v2si: case X86::BI__builtin_ia32_vec_ext_v2di: case X86::BI__builtin_ia32_vextractf128_pd256: case X86::BI__builtin_ia32_vextractf128_ps256: case X86::BI__builtin_ia32_vextractf128_si256: case X86::BI__builtin_ia32_extract128i256: case X86::BI__builtin_ia32_extractf64x4_mask: case X86::BI__builtin_ia32_extracti64x4_mask: case X86::BI__builtin_ia32_extractf32x8_mask: case X86::BI__builtin_ia32_extracti32x8_mask: case X86::BI__builtin_ia32_extractf64x2_256_mask: case X86::BI__builtin_ia32_extracti64x2_256_mask: case X86::BI__builtin_ia32_extractf32x4_256_mask: case X86::BI__builtin_ia32_extracti32x4_256_mask: i = 1; l = 0; u = 1; break; case X86::BI__builtin_ia32_vec_set_v2di: case X86::BI__builtin_ia32_vinsertf128_pd256: case X86::BI__builtin_ia32_vinsertf128_ps256: case X86::BI__builtin_ia32_vinsertf128_si256: case X86::BI__builtin_ia32_insert128i256: case X86::BI__builtin_ia32_insertf32x8: case X86::BI__builtin_ia32_inserti32x8: case X86::BI__builtin_ia32_insertf64x4: case X86::BI__builtin_ia32_inserti64x4: case X86::BI__builtin_ia32_insertf64x2_256: case X86::BI__builtin_ia32_inserti64x2_256: case X86::BI__builtin_ia32_insertf32x4_256: case X86::BI__builtin_ia32_inserti32x4_256: i = 2; l = 0; u = 1; break; case X86::BI__builtin_ia32_vpermilpd: case X86::BI__builtin_ia32_vec_ext_v4hi: case X86::BI__builtin_ia32_vec_ext_v4si: case X86::BI__builtin_ia32_vec_ext_v4sf: case X86::BI__builtin_ia32_vec_ext_v4di: case X86::BI__builtin_ia32_extractf32x4_mask: case X86::BI__builtin_ia32_extracti32x4_mask: case X86::BI__builtin_ia32_extractf64x2_512_mask: case X86::BI__builtin_ia32_extracti64x2_512_mask: a2122 5 case X86::BI_mm_prefetch: case X86::BI__builtin_ia32_vec_ext_v8hi: case X86::BI__builtin_ia32_vec_ext_v8si: i = 1; l = 0; u = 7; break; d2124 4 a2127 13 case X86::BI__builtin_ia32_blendpd: case X86::BI__builtin_ia32_shufpd: case X86::BI__builtin_ia32_vec_set_v4hi: case X86::BI__builtin_ia32_vec_set_v4si: case X86::BI__builtin_ia32_vec_set_v4di: case X86::BI__builtin_ia32_shuf_f32x4_256: case X86::BI__builtin_ia32_shuf_f64x2_256: case X86::BI__builtin_ia32_shuf_i32x4_256: case X86::BI__builtin_ia32_shuf_i64x2_256: case X86::BI__builtin_ia32_insertf64x2_512: case X86::BI__builtin_ia32_inserti64x2_512: case X86::BI__builtin_ia32_insertf32x4: case X86::BI__builtin_ia32_inserti32x4: a2167 2 case X86::BI__builtin_ia32_vec_set_v8hi: case X86::BI__builtin_ia32_vec_set_v8si: a2169 1 case X86::BI__builtin_ia32_vpermilpd256: a2173 8 case X86::BI__builtin_ia32_getmantpd128_mask: case X86::BI__builtin_ia32_getmantpd256_mask: case X86::BI__builtin_ia32_getmantps128_mask: case X86::BI__builtin_ia32_getmantps256_mask: case X86::BI__builtin_ia32_getmantpd512_mask: case X86::BI__builtin_ia32_getmantps512_mask: case X86::BI__builtin_ia32_vec_ext_v16qi: case X86::BI__builtin_ia32_vec_ext_v16hi: a2175 4 case X86::BI__builtin_ia32_pblendd128: case X86::BI__builtin_ia32_blendps: case X86::BI__builtin_ia32_blendpd256: case X86::BI__builtin_ia32_shufpd256: a2185 2 case X86::BI__builtin_ia32_vec_set_v16qi: case X86::BI__builtin_ia32_vec_set_v16hi: a2187 3 case X86::BI__builtin_ia32_vec_ext_v32qi: i = 1; l = 0; u = 31; break; a2201 1 case X86::BI__builtin_ia32_vec_set_v32qi: d2204 7 a2210 17 case X86::BI__builtin_ia32_permdf256: case X86::BI__builtin_ia32_permdi256: case X86::BI__builtin_ia32_permdf512: case X86::BI__builtin_ia32_permdi512: case X86::BI__builtin_ia32_vpermilps: case X86::BI__builtin_ia32_vpermilps256: case X86::BI__builtin_ia32_vpermilpd512: case X86::BI__builtin_ia32_vpermilps512: case X86::BI__builtin_ia32_pshufd: case X86::BI__builtin_ia32_pshufd256: case X86::BI__builtin_ia32_pshufd512: case X86::BI__builtin_ia32_pshufhw: case X86::BI__builtin_ia32_pshufhw256: case X86::BI__builtin_ia32_pshufhw512: case X86::BI__builtin_ia32_pshuflw: case X86::BI__builtin_ia32_pshuflw256: case X86::BI__builtin_ia32_pshuflw512: a2211 1 case X86::BI__builtin_ia32_vcvtps2ph_mask: a2212 2 case X86::BI__builtin_ia32_vcvtps2ph256_mask: case X86::BI__builtin_ia32_vcvtps2ph512_mask: d2225 10 a2234 12 case X86::BI__builtin_ia32_prold512: case X86::BI__builtin_ia32_prolq512: case X86::BI__builtin_ia32_prold128: case X86::BI__builtin_ia32_prold256: case X86::BI__builtin_ia32_prolq128: case X86::BI__builtin_ia32_prolq256: case X86::BI__builtin_ia32_prord512: case X86::BI__builtin_ia32_prorq512: case X86::BI__builtin_ia32_prord128: case X86::BI__builtin_ia32_prord256: case X86::BI__builtin_ia32_prorq128: case X86::BI__builtin_ia32_prorq256: a2242 6 case X86::BI__builtin_ia32_pslldqi128_byteshift: case X86::BI__builtin_ia32_pslldqi256_byteshift: case X86::BI__builtin_ia32_pslldqi512_byteshift: case X86::BI__builtin_ia32_psrldqi128_byteshift: case X86::BI__builtin_ia32_psrldqi256_byteshift: case X86::BI__builtin_ia32_psrldqi512_byteshift: d2245 15 d2264 2 a2265 4 case X86::BI__builtin_ia32_pblendw128: case X86::BI__builtin_ia32_pblendw256: case X86::BI__builtin_ia32_blendps256: case X86::BI__builtin_ia32_pblendd256: d2268 1 a2268 7 case X86::BI__builtin_ia32_palignr512: case X86::BI__builtin_ia32_alignq512: case X86::BI__builtin_ia32_alignd512: case X86::BI__builtin_ia32_alignd128: case X86::BI__builtin_ia32_alignd256: case X86::BI__builtin_ia32_alignq128: case X86::BI__builtin_ia32_alignq256: d2271 7 a2277 29 case X86::BI__builtin_ia32_shuf_f32x4: case X86::BI__builtin_ia32_shuf_f64x2: case X86::BI__builtin_ia32_shuf_i32x4: case X86::BI__builtin_ia32_shuf_i64x2: case X86::BI__builtin_ia32_shufpd512: case X86::BI__builtin_ia32_shufps: case X86::BI__builtin_ia32_shufps256: case X86::BI__builtin_ia32_shufps512: case X86::BI__builtin_ia32_dbpsadbw128: case X86::BI__builtin_ia32_dbpsadbw256: case X86::BI__builtin_ia32_dbpsadbw512: case X86::BI__builtin_ia32_vpshldd128: case X86::BI__builtin_ia32_vpshldd256: case X86::BI__builtin_ia32_vpshldd512: case X86::BI__builtin_ia32_vpshldq128: case X86::BI__builtin_ia32_vpshldq256: case X86::BI__builtin_ia32_vpshldq512: case X86::BI__builtin_ia32_vpshldw128: case X86::BI__builtin_ia32_vpshldw256: case X86::BI__builtin_ia32_vpshldw512: case X86::BI__builtin_ia32_vpshrdd128: case X86::BI__builtin_ia32_vpshrdd256: case X86::BI__builtin_ia32_vpshrdd512: case X86::BI__builtin_ia32_vpshrdq128: case X86::BI__builtin_ia32_vpshrdq256: case X86::BI__builtin_ia32_vpshrdq512: case X86::BI__builtin_ia32_vpshrdw128: case X86::BI__builtin_ia32_vpshrdw256: case X86::BI__builtin_ia32_vpshrdw512: d2320 9 d2334 1 a2334 6 // Note that we don't force a hard error on the range check here, allowing // template-generated or macro-generated dead code to potentially have out-of- // range values. These need to code generate, but don't need to necessarily // make any sense. We use a warning that defaults to an error. return SemaBuiltinConstantArgRange(TheCall, i, l, u, /*RangeIsError*/ false); d2362 1 a2362 1 /// Returns true if the value evaluates to null. d2405 1 a2405 2 /// Diagnose use of %s directive in an NSString which is being passed d2475 2 a2476 3 for (const ParamIdx &Idx : NonNull->args()) { unsigned IdxAST = Idx.getASTIndex(); if (IdxAST >= Args.size()) d2480 1 a2480 1 NonNullArgs.set(IdxAST); d2598 1 a2598 1 CheckArgumentWithTypeTag(I, Args, Loc); a2736 1 case AtomicExpr::AO__opencl_atomic_init: a2739 1 case AtomicExpr::AO__opencl_atomic_load: a2745 1 case AtomicExpr::AO__opencl_atomic_store: d2762 1 a2762 3 // All the non-OpenCL operations take one of the following forms. // The OpenCL operations take the __c11 forms with one extra argument for // synchronization scope. a2765 1 a2767 1 a2769 1 a2771 1 a2773 1 a2775 1 a2777 1 a2779 1 a2782 2 const unsigned NumForm = GNUCmpXchg + 1; a2791 3 static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm, "need to update code for modified forms"); d2796 2 a2797 5 bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init && Op <= AtomicExpr::AO__opencl_atomic_fetch_max; bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor) || IsOpenCL; a2802 1 bool IsMinMax = false; a2805 1 case AtomicExpr::AO__opencl_atomic_init: a2809 1 case AtomicExpr::AO__opencl_atomic_load: a2818 1 case AtomicExpr::AO__opencl_atomic_store: a2825 4 case AtomicExpr::AO__opencl_atomic_fetch_add: case AtomicExpr::AO__opencl_atomic_fetch_sub: case AtomicExpr::AO__opencl_atomic_fetch_min: case AtomicExpr::AO__opencl_atomic_fetch_max: d2831 1 a2831 1 LLVM_FALLTHROUGH; a2834 3 case AtomicExpr::AO__opencl_atomic_fetch_and: case AtomicExpr::AO__opencl_atomic_fetch_or: case AtomicExpr::AO__opencl_atomic_fetch_xor: a2845 6 case AtomicExpr::AO__atomic_fetch_min: case AtomicExpr::AO__atomic_fetch_max: IsMinMax = true; Form = Arithmetic; break; a2846 1 case AtomicExpr::AO__opencl_atomic_exchange: a2856 2 case AtomicExpr::AO__opencl_atomic_compare_exchange_strong: case AtomicExpr::AO__opencl_atomic_compare_exchange_weak: a2865 3 unsigned AdjustedNumArgs = NumArgs[Form]; if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init) ++AdjustedNumArgs; d2867 1 a2867 1 if (TheCall->getNumArgs() < AdjustedNumArgs) { d2869 1 a2869 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2872 2 a2873 2 } else if (TheCall->getNumArgs() > AdjustedNumArgs) { Diag(TheCall->getArg(AdjustedNumArgs)->getLocStart(), d2875 1 a2875 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2903 1 a2903 2 if (AtomTy.isConstQualified() || AtomTy.getAddressSpace() == LangAS::opencl_constant) { d2905 1 a2905 2 << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType() << Ptr->getSourceRange(); d2920 1 a2920 2 if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { d2925 1 a2925 9 if (IsMinMax) { const BuiltinType *BT = ValType->getAs(); if (!BT || (BT->getKind() != BuiltinType::Int && BT->getKind() != BuiltinType::UInt)) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_int32_or_ptr); return ExprError(); } } if (!IsAddSub && !IsMinMax && !ValType->isIntegerType()) { d2968 3 a2970 4 // All atomic operations have an overload which takes a pointer to a volatile // 'A'. We shouldn't let the volatile-ness of the pointee-type inject itself // into the result or the other operands. Similarly atomic_load takes a // pointer to a const 'A'. d2974 1 a2974 2 if (Form == Copy || Form == LoadCopy || Form == GNUXchg || Form == Init) d2982 1 a2982 2 bool IsPassedByAddress = false; if (!IsC11 && !IsN) { a2983 2 IsPassedByAddress = true; } d2985 4 a2988 6 // The first argument's non-CV pointer type is used to deduce the type of // subsequent arguments, except for: // - weak flag (always converted to bool) // - memory order (always converted to int) // - scope (always converted to int) for (unsigned i = 0; i != TheCall->getNumArgs(); ++i) { a2991 6 case 0: // The first argument is always a pointer. It has a fixed type. // It is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); // Nothing else to do: we already know all we want about this pointer. continue; d3000 1 a3000 4 else if (Form == Copy || Form == Xchg) { if (IsPassedByAddress) // The value pointer is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3002 1 a3002 1 } else if (Form == Arithmetic) d3006 2 a3007 1 // The value pointer is always dereferenced, a nullptr is undefined. d3009 1 a3009 1 LangAS AS = LangAS::Default; d3020 2 a3021 4 // The third argument to compare_exchange / GNU exchange is the desired // value, either by-value (for the C11 and *_n variant) or as a pointer. if (IsPassedByAddress) CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3030 1 a3030 1 // The order(s) and scope are always converted to int. a3090 11 if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) { auto *Scope = TheCall->getArg(TheCall->getNumArgs() - 1); llvm::APSInt Result(32); if (Scope->isIntegerConstantExpr(Result, Context) && !ScopeModel->isValid(Result.getZExtValue())) { Diag(Scope->getLocStart(), diag::err_atomic_op_has_invalid_synch_scope) << Scope->getSourceRange(); } SubExprs.push_back(Scope); } d3096 1 a3096 3 Op == AtomicExpr::AO__c11_atomic_store || Op == AtomicExpr::AO__opencl_atomic_load || Op == AtomicExpr::AO__opencl_atomic_store ) && d3098 2 a3099 4 Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load || Op == AtomicExpr::AO__opencl_atomic_load) ? 0 : 1); a3176 6 if (ValType.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_cannot_be_const) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } d3382 1 a3382 1 case Builtin::BI__sync_lock_test_and_set: d3634 1 a3634 1 CallingConv CC = CC_C; d3781 1 a3781 1 bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) { d3800 7 a3806 1 // __va_start on Windows does not validate the parameter qualifiers d3808 9 a3816 25 const Expr *Arg1 = Call->getArg(1)->IgnoreParens(); const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr(); const Expr *Arg2 = Call->getArg(2)->IgnoreParens(); const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr(); const QualType &ConstCharPtrTy = Context.getPointerType(Context.CharTy.withConst()); if (!Arg1Ty->isPointerType() || Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy) Diag(Arg1->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg1->getType() << ConstCharPtrTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 2 << Arg1->getType() << ConstCharPtrTy; const QualType SizeTy = Context.getSizeType(); if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy) Diag(Arg2->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg2->getType() << SizeTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 3 << Arg2->getType() << SizeTy; d3889 1 a3889 2 // If this is an implicit conversion from float -> float, double, or // long double, remove it. d3895 3 a3897 6 assert( (Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && "promotion from float to either float, double, or long double is " "the only expected cast here"); d4146 1 a4146 1 if (Result > std::numeric_limits::max()) d4148 1 a4148 1 << std::numeric_limits::max() d4293 1 a4293 1 int Low, int High, bool RangeIsError) { d4305 3 a4307 12 if (Result.getSExtValue() < Low || Result.getSExtValue() > High) { if (RangeIsError) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange(); else // Defer the warning until we know if the code will be emitted so that // dead code can ignore this. DiagRuntimeBehavior(TheCall->getLocStart(), TheCall, PDiag(diag::warn_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange()); } d4413 1 a4466 1 d4469 1 a4469 2 signed FirstUncoveredArg = Unknown; d4473 1 a4473 1 UncoveredArgHandler() = default; d4517 1 a4517 2 } // namespace d4550 1 a4550 2 assert(BitWidth <= std::numeric_limits::max() / 2 && "index (intermediate) result too big"); a4559 1 a4577 1 a4602 1 d4605 1 a4605 2 } // namespace d4692 1 a4692 1 case Stmt::ImplicitCastExprClass: d4695 1 d4786 12 a4797 16 bool IsFirst = true; StringLiteralCheckType CommonResult; for (const auto *FA : ND->specific_attrs()) { const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex()); StringLiteralCheckType Result = checkFormatStringExpr( S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); if (IsFirst) { CommonResult = Result; IsFirst = false; } } if (!IsFirst) return CommonResult; if (const auto *FD = dyn_cast(ND)) { d4817 2 a4818 1 const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex()); d4884 1 a4884 1 if (UnaOp->getOpcode() == UO_AddrOf && ASE) { a5016 1 d5030 2 a5031 2 bool usesPositionalArgs = false; bool atFirstArg = true; d5049 1 d5119 1 a5119 2 } // namespace d5421 1 a5421 1 /// If the format string is not within the function call, emit a note a5472 1 d5537 1 a5537 2 } // namespace d5655 4 d5725 1 a5725 2 using MethodSet = llvm::SmallPtrSet; d5740 1 a5740 1 using MethodSet = llvm::SmallPtrSet; d5768 1 a5768 2 using namespace analyze_printf; d6012 3 a6014 3 .Case("CFIndex", Context.getNSIntegerType()) .Case("NSInteger", Context.getNSIntegerType()) .Case("NSUInteger", Context.getNSUIntegerType()) a6065 1 d6077 3 a6079 4 const analyze_printf::ArgType::MatchKind Match = AT.matchesType(S.Context, ExprTy); bool Pedantic = Match == analyze_printf::ArgType::NoMatchPedantic; if (Match == analyze_printf::ArgType::Match) d6081 1 a6156 6 // %zi/%zu and %td/%tu are OK to use for NSInteger/NSUInteger of type int // (long in ASTContext). Only complain to pedants. if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") && (AT.isSizeT() || AT.isPtrdiffT()) && AT.matchesType(S.Context, CastTy)) Pedantic = true; d6164 1 a6164 1 bool Success = d6167 1 a6167 1 if (Success) { d6176 4 a6179 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6182 1 a6182 1 EmitFormatDiagnostic(S.PDiag(Diag) d6203 1 a6203 1 if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly) d6235 3 a6237 5 unsigned Diag = Pedantic ? diag::warn_format_argument_needs_cast_pedantic : diag::warn_format_argument_needs_cast; EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum << E->getSourceRange(), d6261 4 a6264 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6267 1 a6267 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy a6317 1 d6344 1 a6344 2 } // namespace d6357 1 d6449 1 a6449 1 analyze_format_string::ArgType::MatchKind Match = d6451 1 a6451 2 bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic; if (Match == analyze_format_string::ArgType::Match) d6453 1 d6456 1 a6456 1 bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), d6459 4 a6462 3 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6464 1 a6464 1 if (Success) { d6471 1 a6471 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) d6479 1 a6479 1 EmitFormatDiagnostic(S.PDiag(Diag) d7032 1 a7032 1 /// Takes the expression passed to the size_t parameter of functions d7044 2 a7045 2 // if E is binop and op is <=>, >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isLogicalOp()) d7063 1 a7063 1 /// Determine whether the given type is or contains a dynamic class type d7094 1 a7094 1 /// If E is a sizeof expression, returns its argument expression, d7099 1 a7099 1 if (SizeOf->getKind() == UETT_SizeOf && !SizeOf->isArgumentType()) d7105 1 a7105 1 /// If E is a sizeof expression, returns its argument type. d7109 1 a7109 1 if (SizeOf->getKind() == UETT_SizeOf) d7115 1 a7115 93 namespace { struct SearchNonTrivialToInitializeField : DefaultInitializedTypeVisitor { using Super = DefaultInitializedTypeVisitor; SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PDIK, AT, SL); return; } Super::visitWithKind(PDIK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void visitTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; struct SearchNonTrivialToCopyField : CopiedTypeVisitor { using Super = CopiedTypeVisitor; SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PCK, AT, SL); return; } Super::visitWithKind(PCK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) {} void visitTrivial(QualType FT, SourceLocation SL) {} void visitVolatileTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; } /// Check for dangerous or invalid arguments to memset(). d7280 1 a7280 17 else if (const auto *RT = PointeeTy->getAs()) { if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) && RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 0); SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this); } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) && RT->getDecl()->isNonTrivialToPrimitiveCopy()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 1); SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this); } else { continue; } } else d7297 1 a7297 1 while (true) { d7515 1 d7934 1 a7934 1 if (!Proto->isNothrow(/*ResultIfDependent*/true) && d8000 2 a8001 1 : Width(Width), NonNegative(NonNegative) {} d8025 2 a8026 6 if (!C.getLangOpts().CPlusPlus) { // For enum types in C code, use the underlying datatype. if (const EnumType *ET = dyn_cast(T)) T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr(); } else if (const EnumType *ET = dyn_cast(T)) { // For enum types in C++, use the known bit width of the enumerators. d8028 2 a8029 6 // In C++11, enums can have a fixed underlying type. Use this type to // compute the range. if (Enum->isFixed()) { return IntRange(C.getIntWidth(QualType(T, 0)), !ET->isSignedIntegerOrEnumerationType()); } d8083 1 a8083 4 } // namespace static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { d8095 2 a8096 2 static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { d8124 1 a8124 1 static QualType GetExprType(const Expr *E) { d8135 1 a8135 1 static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) { a8188 2 case BO_Cmp: llvm_unreachable("builtin <=> should have class type"); d8241 1 a8241 1 LLVM_FALLTHROUGH; d8353 1 a8353 1 static IntRange GetExprRange(ASTContext &C, const Expr *E) { d8360 3 a8362 3 static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8377 3 a8379 3 static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8395 1 a8395 1 static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); d8397 1 a8397 1 static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) { d8402 1 a8402 1 return true; d8406 1 a8406 1 return true; d8408 2 a8409 132 return false; } static bool isKnownToHaveUnsignedValue(Expr *E) { return E->getType()->isIntegerType() && (!E->getType()->isSignedIntegerType() || !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType()); } namespace { /// The promoted range of values of a type. In general this has the /// following structure: /// /// |-----------| . . . |-----------| /// ^ ^ ^ ^ /// Min HoleMin HoleMax Max /// /// ... where there is only a hole if a signed type is promoted to unsigned /// (in which case Min and Max are the smallest and largest representable /// values). struct PromotedRange { // Min, or HoleMax if there is a hole. llvm::APSInt PromotedMin; // Max, or HoleMin if there is a hole. llvm::APSInt PromotedMax; PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) { if (R.Width == 0) PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned); else if (R.Width >= BitWidth && !Unsigned) { // Promotion made the type *narrower*. This happens when promoting // a < 32-bit unsigned / <= 32-bit signed bit-field to 'signed int'. // Treat all values of 'signed int' as being in range for now. PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned); PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned); } else { PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMin.setIsUnsigned(Unsigned); PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMax.setIsUnsigned(Unsigned); } } // Determine whether this range is contiguous (has no hole). bool isContiguous() const { return PromotedMin <= PromotedMax; } // Where a constant value is within the range. enum ComparisonResult { LT = 0x1, LE = 0x2, GT = 0x4, GE = 0x8, EQ = 0x10, NE = 0x20, InRangeFlag = 0x40, Less = LE | LT | NE, Min = LE | InRangeFlag, InRange = InRangeFlag, Max = GE | InRangeFlag, Greater = GE | GT | NE, OnlyValue = LE | GE | EQ | InRangeFlag, InHole = NE }; ComparisonResult compare(const llvm::APSInt &Value) const { assert(Value.getBitWidth() == PromotedMin.getBitWidth() && Value.isUnsigned() == PromotedMin.isUnsigned()); if (!isContiguous()) { assert(Value.isUnsigned() && "discontiguous range for signed compare"); if (Value.isMinValue()) return Min; if (Value.isMaxValue()) return Max; if (Value >= PromotedMin) return InRange; if (Value <= PromotedMax) return InRange; return InHole; } switch (llvm::APSInt::compareValues(Value, PromotedMin)) { case -1: return Less; case 0: return PromotedMin == PromotedMax ? OnlyValue : Min; case 1: switch (llvm::APSInt::compareValues(Value, PromotedMax)) { case -1: return InRange; case 0: return Max; case 1: return Greater; } } llvm_unreachable("impossible compare result"); } static llvm::Optional constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) { if (Op == BO_Cmp) { ComparisonResult LTFlag = LT, GTFlag = GT; if (ConstantOnRHS) std::swap(LTFlag, GTFlag); if (R & EQ) return StringRef("'std::strong_ordering::equal'"); if (R & LTFlag) return StringRef("'std::strong_ordering::less'"); if (R & GTFlag) return StringRef("'std::strong_ordering::greater'"); return llvm::None; } ComparisonResult TrueFlag, FalseFlag; if (Op == BO_EQ) { TrueFlag = EQ; FalseFlag = NE; } else if (Op == BO_NE) { TrueFlag = NE; FalseFlag = EQ; } else { if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) { TrueFlag = LT; FalseFlag = GE; } else { TrueFlag = GT; FalseFlag = LE; } if (Op == BO_GE || Op == BO_LE) std::swap(TrueFlag, FalseFlag); } if (R & TrueFlag) return StringRef("true"); if (R & FalseFlag) return StringRef("false"); return llvm::None; } }; d8412 1 a8412 1 static bool HasEnumType(Expr *E) { d8424 2 a8425 18 static int classifyConstantValue(Expr *Constant) { // The values of this enumeration are used in the diagnostics // diag::warn_out_of_range_compare and diag::warn_tautological_bool_compare. enum ConstantValueKind { Miscellaneous = 0, LiteralTrue, LiteralFalse }; if (auto *BL = dyn_cast(Constant)) return BL->getValue() ? ConstantValueKind::LiteralTrue : ConstantValueKind::LiteralFalse; return ConstantValueKind::Miscellaneous; } static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, const llvm::APSInt &Value, bool RhsConstant) { d8427 1 a8427 1 return false; d8429 3 a8431 1 Expr *OriginalOther = Other; d8433 18 a8450 2 Constant = Constant->IgnoreParenImpCasts(); Other = Other->IgnoreParenImpCasts(); d8452 6 a8457 10 // Suppress warnings on tautological comparisons between values of the same // enumeration type. There are only two ways we could warn on this: // - If the constant is outside the range of representable values of // the enumeration. In such a case, we should warn about the cast // to enumeration type, not about the comparison. // - If the constant is the maximum / minimum in-range value. For an // enumeratin type, such comparisons can be meaningful and useful. if (Constant->getType()->isEnumeralType() && S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType())) return false; d8465 138 d8604 25 a8628 15 // Whether we're treating Other as being a bool because of the form of // expression despite it having another type (typically 'int' in C). bool OtherIsBooleanDespiteType = !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue(); if (OtherIsBooleanDespiteType) OtherRange = IntRange::forBoolType(); // Determine the promoted range of the other type and see if a comparison of // the constant against that range is tautological. PromotedRange OtherPromotedRange(OtherRange, Value.getBitWidth(), Value.isUnsigned()); auto Cmp = OtherPromotedRange.compare(Value); auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant); if (!Result) return false; d8630 8 a8637 9 // Suppress the diagnostic for an in-range comparison if the constant comes // from a macro or enumerator. We don't want to diagnose // // some_long_value <= INT_MAX // // when sizeof(int) == sizeof(long). bool InRange = Cmp & PromotedRange::InRangeFlag; if (InRange && IsEnumConstOrFromMacro(S, Constant)) return false; a8644 1 // Should be enough for uint128 (39 decimal digits) d8652 6 a8657 24 // FIXME: We use a somewhat different formatting for the in-range cases and // cases involving boolean values for historical reasons. We should pick a // consistent way of presenting these diagnostics. if (!InRange || Other->isKnownToHaveBooleanValue()) { S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(!InRange ? diag::warn_out_of_range_compare : diag::warn_tautological_bool_compare) << OS.str() << classifyConstantValue(Constant) << OtherT << OtherIsBooleanDespiteType << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); } else { unsigned Diag = (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0) ? (HasEnumType(OriginalOther) ? diag::warn_unsigned_enum_always_true_comparison : diag::warn_unsigned_always_true_comparison) : diag::warn_tautological_constant_compare; S.Diag(E->getOperatorLoc(), Diag) << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } return true; d8662 1 a8662 1 static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { d8667 1 a8667 1 /// Implements -Wsign-compare. d8670 1 a8670 1 static void AnalyzeComparison(Sema &S, BinaryOperator *E) { d8683 7 a8689 3 Expr *LHS = E->getLHS(); Expr *RHS = E->getRHS(); d8692 2 d8695 19 a8713 27 bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); // We don't care about expressions whose result is a constant. if (IsRHSIntegralLiteral && IsLHSIntegralLiteral) return AnalyzeImpConvsInComparison(S, E); // We only care about expressions where just one side is literal if (IsRHSIntegralLiteral ^ IsLHSIntegralLiteral) { // Is the constant on the RHS or LHS? const bool RhsConstant = IsRHSIntegralLiteral; Expr *Const = RhsConstant ? RHS : LHS; Expr *Other = RhsConstant ? LHS : RHS; const llvm::APSInt &Value = RhsConstant ? RHSValue : LHSValue; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant)) return AnalyzeImpConvsInComparison(S, E); } } if (!T->hasUnsignedIntegerRepresentation()) { // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. d8715 1 a8715 15 } LHS = LHS->IgnoreParenImpCasts(); RHS = RHS->IgnoreParenImpCasts(); if (!S.getLangOpts().CPlusPlus) { // Avoid warning about comparison of integers with different signs when // RHS/LHS has a `typeof(E)` type whose sign is different from the sign of // the type of `E`. if (const auto *TET = dyn_cast(LHS->getType())) LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); if (const auto *TET = dyn_cast(RHS->getType())) RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); } d8728 1 d8740 3 a8742 1 // If the signed range is non-negative, -Wsign-compare won't fire. d8744 1 a8744 1 return; d8771 2 a8772 2 static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { d8902 1 a8902 1 static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { d8921 3 a8923 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d8936 2 a8937 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { a8940 8 /// Analyze the given compound assignment for the possible losing of /// floating-point precision. static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) { assert(isa(E) && "Must be compound assignment operation"); // Recurse on the LHS and RHS in here AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); d8942 2 a8943 17 // Now check the outermost expression const auto *ResultBT = E->getLHS()->getType()->getAs(); const auto *RBT = cast(E) ->getComputationResultType() ->getAs(); // If both source and target are floating points. if (ResultBT && ResultBT->isFloatingPoint() && RBT && RBT->isFloatingPoint()) // Builtin FP kinds are ordered by increasing FP rank. if (ResultBT->getKind() < RBT->getKind()) // We don't want to warn for system macro. if (!S.SourceMgr.isInSystemMacro(E->getOperatorLoc())) // warn about dropping FP rank. DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(), diag::warn_impcast_float_result_precision); } d8945 1 a8945 3 /// Diagnose an implicit cast from a floating point value to an integer value. static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext) { d8970 3 a8972 4 llvm::APFloat::opStatus Result = Value.convertToInteger( IntegerValue, llvm::APFloat::rmTowardZero, &isExact); if (Result == llvm::APFloat::opOK && isExact) { a8977 9 // Conversion of a floating-point value to a non-bool integer where the // integral part cannot be represented by the integer type is undefined. if (!IsBool && Result == llvm::APFloat::opInvalidOp) return DiagnoseImpCast( S, E, T, CContext, IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range : diag::warn_impcast_float_to_integer_out_of_range, PruneWarnings); d9035 1 a9035 2 static std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { d9044 1 a9044 1 static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { d9063 2 a9064 2 static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { d9084 1 a9084 2 static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9109 5 a9113 2 Loc = S.SourceMgr.getTopMacroCallerLoc(Loc); CC = S.SourceMgr.getTopMacroCallerLoc(CC); d9120 1 a9120 1 Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin(); d9128 1 a9128 1 << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC) d9133 4 a9136 6 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); d9140 2 a9141 4 static void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { d9170 2 a9171 2 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { d9198 2 a9199 3 static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { d9227 2 a9228 2 static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9251 2 a9252 3 static void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = nullptr) { d9304 1 a9304 1 d9319 1 a9319 1 if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType()) d9322 1 a9322 4 return DiagnoseImpCast(S, E, T, CC, S.getLangOpts().CPlusPlus ? diag::err_impcast_complex_scalar : diag::warn_impcast_complex_scalar); d9517 2 a9518 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); d9520 2 a9521 2 static void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { d9532 2 a9533 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { d9562 1 a9562 1 static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { d9571 1 a9571 2 static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { d9577 1 a9577 1 a9620 3 // And with compound assignments. if (BO->isAssignmentOp()) return AnalyzeCompoundAssignment(S, BO); d9664 3 a9666 1 /// Diagnose integer type and any valid implicit conversion to it. d9729 1 a9729 1 /// Diagnose pointers that are always non-null. d9833 2 a9834 2 for (const ParamIdx &ArgNo : NonNull->args()) { if (ArgNo.getASTIndex() == ParamNo) { d9955 1 a9955 2 Expr *OriginalE = Exprs.pop_back_val(); Expr *E = OriginalE->IgnoreParenCasts(); d9957 2 a9958 2 if (isa(E)) { E->EvaluateForOverflow(Context); d9962 1 a9962 1 if (auto InitList = dyn_cast(OriginalE)) d9964 3 a9966 6 else if (isa(OriginalE)) E->EvaluateForOverflow(Context); else if (auto Call = dyn_cast(E)) Exprs.append(Call->arg_begin(), Call->arg_end()); else if (auto Message = dyn_cast(E)) Exprs.append(Message->arg_begin(), Message->arg_end()); d9971 1 a9971 2 /// Visitor for expressions which looks for unsequenced operations on the d9974 1 a9974 1 using Base = EvaluatedExprVisitor; d9976 1 a9976 1 /// A tree of sequenced regions within an expression. Two regions are d9990 1 a9990 1 /// A region within an expression which may be sequenced with respect d9993 2 a9995 5 unsigned Index = 0; explicit Seq(unsigned N) : Index(N) {} d9997 1 a9997 1 Seq() = default; d10003 1 a10003 1 /// Create a new sequence of operations, which is an unsequenced d10011 1 a10011 1 /// Merge a sequence of operations into its parent. d10016 1 a10016 1 /// Determine whether two operations are unsequenced. This operation d10031 1 a10031 1 /// Pick a representative for a sequence. d10041 1 a10041 1 using Object = NamedDecl *; a10047 1 a10050 1 d10059 2 a10060 1 Expr *Use = nullptr; a10061 2 Usage() = default; d10065 1 a10066 1 d10068 1 a10068 3 bool Diagnosed = false; UsageInfo() = default; d10070 1 a10070 1 using UsageInfoMap = llvm::SmallDenseMap; a10072 1 a10074 1 a10076 1 a10078 1 d10081 1 a10081 2 SmallVectorImpl> *ModAsSideEffect = nullptr; a10095 1 d10108 1 a10108 1 SmallVectorImpl> *OldModAsSideEffect; d10118 1 a10118 1 : Self(Self), Prev(Self.EvalTracker) { a10120 1 d10137 2 a10138 2 bool EvalOK = true; } *EvalTracker = nullptr; d10140 1 a10140 1 /// Find the object which is produced by the specified expression, d10162 1 a10162 1 /// Note that an object was modified or used by an expression. d10172 1 a10172 2 /// Check whether a modification or use conflicts with a prior usage. a10198 1 a10210 1 d10219 2 a10220 1 : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) { d10454 1 a10454 2 } // namespace d10549 17 a10565 12 // If the parameter is a c++ class type and it has to be destructed in the // callee function, declare the destructor so that it can be called by the // callee function. Do not perform any direct access check on the dtor here. if (!Param->isInvalidDecl()) { if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) { if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext() && ClassDecl->isParamDestroyedInCallee()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); d10648 1 a10648 1 /// Check whether this array fits the idiom of a size-one tail padded d10718 1 a10718 1 ND = DRE->getDecl(); d10720 1 a10720 1 ND = ME->getMemberDecl(); d10803 1 a10803 1 ND = DRE->getDecl(); d10805 1 a10805 1 ND = ME->getMemberDecl(); d10823 1 a10823 6 expr = ASE->getBase(); break; } case Stmt::MemberExprClass: { expr = cast(expr)->getBase(); break; d10871 13 a10883 16 struct RetainCycleOwner { VarDecl *Variable = nullptr; SourceRange Range; SourceLocation Loc; bool Indirect = false; RetainCycleOwner() = default; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } // namespace a10979 1 d10981 4 d10987 2 a10988 6 Expr *Capturer = nullptr; bool VarWillBeReased = false; FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Context(Context), Variable(variable) {} a11012 1 d11029 1 a11029 2 } // namespace d11227 1 a11227 1 << ArgRE->getDecl() << StringRef("'super'"); d11243 1 a11243 1 << Decl << Decl; d11247 1 a11247 1 << Decl; d11257 1 a11257 1 << Decl << Decl; d11260 1 a11260 1 << Decl; d11286 2 a11287 6 const ObjCMethodDecl *MD = msg->getMethodDecl(); for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) { if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) { // noescape blocks should not be retained by the method. if (MD && MD->parameters()[i]->hasAttr()) continue; a11288 2 } } d11436 4 a11439 3 static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { d11445 1 d11468 1 d11580 3 a11582 1 if (!CE->isCallToStdMove()) d11650 3 a11652 1 static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); d11654 2 a11655 2 /// Check if two enumeration types are layout-compatible. static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { d11663 2 a11664 3 /// Check if two fields are layout-compatible. static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { d11683 1 a11683 1 /// Check if two standard-layout structs are layout-compatible. d11685 3 a11687 2 static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11728 1 a11728 1 /// Check if two standard-layout unions are layout-compatible. d11730 3 a11732 2 static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11757 1 a11757 2 static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11767 2 a11768 2 /// Check if two types are layout-compatible in C++11 sense. static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { d11802 1 d11806 2 a11807 1 /// Given a type tag expression find the type tag itself. d11814 2 a11815 2 static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { d11878 1 a11878 1 /// Retrieve the C type corresponding to type tag TypeExpr. d11890 1 a11890 1 static bool GetMatchingCType( d11933 1 d11948 2 a11949 1 static bool IsSameCharType(QualType T1, QualType T2) { d11966 1 d11969 1 a11969 2 const ArrayRef ExprArgs, SourceLocation CallSiteLoc) { d11973 1 a11973 8 // Retrieve the argument representing the 'type_tag'. unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex(); if (TypeTagIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 0 << Attr->getTypeTagIdx().getSourceIndex(); return; } const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST]; d11986 1 a11986 8 // Retrieve the argument representing the 'arg_idx'. unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex(); if (ArgumentIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 1 << Attr->getArgumentIdx().getSourceIndex(); return; } const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST]; d12077 2 a12078 3 (T->isPointerType() && (T->getPointeeType()->isIncompleteType() || Context.getTypeAlignInChars( T->getPointeeType()) <= MA->Alignment)))) a12194 1 d12199 1 @ 1.1.1.13.4.2 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.13.2.1 log @Sync with HEAD @ text @d1 1 a1 1 //===- SemaChecking.cpp - Extra Semantic Checking -------------------------===// a14 1 #include "clang/AST/APValue.h" a15 2 #include "clang/AST/Attr.h" #include "clang/AST/AttrIterator.h" a16 2 #include "clang/AST/Decl.h" #include "clang/AST/DeclBase.h" a18 1 #include "clang/AST/DeclarationName.h" d24 2 a25 8 #include "clang/AST/NSAPI.h" #include "clang/AST/NonTrivialTypeVisitor.h" #include "clang/AST/OperationKinds.h" #include "clang/AST/Stmt.h" #include "clang/AST/TemplateBase.h" #include "clang/AST/Type.h" #include "clang/AST/TypeLoc.h" #include "clang/AST/UnresolvedSet.h" a26 1 #include "clang/Basic/AddressSpaces.h" a27 11 #include "clang/Basic/Diagnostic.h" #include "clang/Basic/IdentifierTable.h" #include "clang/Basic/LLVM.h" #include "clang/Basic/LangOptions.h" #include "clang/Basic/OpenCLOptions.h" #include "clang/Basic/OperatorKinds.h" #include "clang/Basic/PartialDiagnostic.h" #include "clang/Basic/SourceLocation.h" #include "clang/Basic/SourceManager.h" #include "clang/Basic/Specifiers.h" #include "clang/Basic/SyncScope.h" a28 1 #include "clang/Basic/TargetCXXABI.h" a29 1 #include "clang/Basic/TypeTraits.h" a32 2 #include "clang/Sema/Ownership.h" #include "clang/Sema/Scope.h" a35 8 #include "llvm/ADT/APFloat.h" #include "llvm/ADT/APInt.h" #include "llvm/ADT/APSInt.h" #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/FoldingSet.h" #include "llvm/ADT/None.h" #include "llvm/ADT/Optional.h" a37 1 #include "llvm/ADT/SmallPtrSet.h" a38 7 #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/StringRef.h" #include "llvm/ADT/StringSwitch.h" #include "llvm/ADT/Triple.h" #include "llvm/Support/AtomicOrdering.h" #include "llvm/Support/Casting.h" #include "llvm/Support/Compiler.h" a39 1 #include "llvm/Support/ErrorHandling.h" a41 1 #include "llvm/Support/MathExtras.h" a42 9 #include #include #include #include #include #include #include #include #include a100 22 static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) { // We need at least one argument. if (TheCall->getNumArgs() < 1) { S.Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return true; } // All arguments should be wide string literals. for (Expr *Arg : TheCall->arguments()) { auto *Literal = dyn_cast(Arg->IgnoreParenCasts()); if (!Literal || !Literal->isWide()) { S.Diag(Arg->getLocStart(), diag::err_msvc_annotation_wide_str) << Arg->getSourceRange(); return true; } } return false; } d123 2 a124 2 ExprResult Arg = TheCall->getArg(I); QualType Ty = Arg.get()->getType(); d126 2 a127 2 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_int) << Ty << Arg.get()->getSourceRange(); a129 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(I, Arg.get()); d136 2 a137 2 ExprResult Arg = TheCall->getArg(2); QualType Ty = Arg.get()->getType(); d141 2 a142 3 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_ptr_int) << Ty << Arg.get()->getSourceRange(); a144 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(2, Arg.get()); d146 1 a301 35 static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) { if (!S.getOpenCLOptions().isEnabled("cl_khr_subgroups")) { S.Diag(Call->getLocStart(), diag::err_opencl_requires_extension) << 1 << Call->getDirectCallee() << "cl_khr_subgroups"; return true; } return false; } static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; if (checkOpenCLSubgroupExt(S, TheCall)) return true; // First argument is an ndrange_t type. Expr *NDRangeArg = TheCall->getArg(0); if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") { S.Diag(NDRangeArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "'ndrange_t'"; return true; } Expr *BlockArg = TheCall->getArg(1); if (!isBlockPointer(BlockArg)) { S.Diag(BlockArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; return true; } return checkOpenCLBlockArgs(S, BlockArg); } d575 1 a575 1 // Performs semantic analysis for the read/write_pipe call. d583 1 a583 1 case 2: d591 1 a591 1 break; d629 1 a629 1 // Performs a semantic analysis on the {work_group_/sub_group_ a649 5 // Since return type of reserve_read/write_pipe built-in function is // reserve_id_t, which is not defined in the builtin def file , we used int // as return type and need to override the return type of these functions. Call->setType(S.Context.OCLReserveIDTy); d653 1 a653 1 // Performs a semantic analysis on {work_group_/sub_group_ d676 1 a676 1 // Performs a semantic analysis on the call to built-in Pipe d693 2 a694 3 // OpenCL v2.0 s6.13.9 - Address space qualifier functions. // Performs semantic analysis for the to_global/local/private call. a723 3 case Builtin::BIto_private: Qual.setAddressSpace(LangAS::opencl_private); break; d725 1 a725 1 llvm_unreachable("Invalid builtin function"); a732 14 // Emit an error and return true if the current architecture is not in the list // of supported architectures. static bool CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall, ArrayRef SupportedArchs) { llvm::Triple::ArchType CurArch = S.getASTContext().getTargetInfo().getTriple().getArch(); if (llvm::is_contained(SupportedArchs, CurArch)) return false; S.Diag(TheCall->getLocStart(), diag::err_builtin_target_unsupported) << TheCall->getSourceRange(); return true; } d773 1 a773 1 if (SemaBuiltinVAStartARMMicrosoft(TheCall)) a782 27 // The acquire, release, and no fence variants are ARM and AArch64 only. case Builtin::BI_interlockedbittestandset_acq: case Builtin::BI_interlockedbittestandset_rel: case Builtin::BI_interlockedbittestandset_nf: case Builtin::BI_interlockedbittestandreset_acq: case Builtin::BI_interlockedbittestandreset_rel: case Builtin::BI_interlockedbittestandreset_nf: if (CheckBuiltinTargetSupport( *this, BuiltinID, TheCall, {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; // The 64-bit bittest variants are x64, ARM, and AArch64 only. case Builtin::BI_bittest64: case Builtin::BI_bittestandcomplement64: case Builtin::BI_bittestandreset64: case Builtin::BI_bittestandset64: case Builtin::BI_interlockedbittestandreset64: case Builtin::BI_interlockedbittestandset64: if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall, {llvm::Triple::x86_64, llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; a800 3 case Builtin::BI__builtin_signbit: case Builtin::BI__builtin_signbitf: case Builtin::BI__builtin_signbitl: d842 1 a961 4 case Builtin::BI__annotation: if (SemaBuiltinMSVCAnnotation(*this, TheCall)) return ExprError(); break; d977 7 a983 40 case Builtin::BI__builtin_operator_delete: { bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete; ExprResult Res = SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete); if (Res.isInvalid()) CorrectDelayedTyposInExpr(TheCallResult.get()); return Res; } case Builtin::BI__builtin_dump_struct: { // We first want to ensure we are called with 2 arguments if (checkArgCount(*this, TheCall, 2)) return ExprError(); // Ensure that the first argument is of type 'struct XX *' const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts(); const QualType PtrArgType = PtrArg->getType(); if (!PtrArgType->isPointerType() || !PtrArgType->getPointeeType()->isRecordType()) { Diag(PtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType << "structure pointer"; return ExprError(); } // Ensure that the second argument is of type 'FunctionType' const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts(); const QualType FnPtrArgType = FnPtrArg->getType(); if (!FnPtrArgType->isPointerType()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } const auto *FuncType = FnPtrArgType->getPointeeType()->getAs(); if (!FuncType) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; d986 3 a988 20 if (const auto *FT = dyn_cast(FuncType)) { if (!FT->getNumParams()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } QualType PT = FT->getParamType(0); if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy || !PT->isPointerType() || !PT->getPointeeType()->isCharType() || !PT->getPointeeType().isConstQualified()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } } TheCall->setType(Context.IntTy); a989 1 } a1050 3 if (SemaBuiltinReserveRWPipe(*this, TheCall)) return ExprError(); break; d1053 1 a1053 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinReserveRWPipe(*this, TheCall)) d1055 4 a1063 3 if (SemaBuiltinCommitRWPipe(*this, TheCall)) return ExprError(); break; d1066 1 a1066 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinCommitRWPipe(*this, TheCall)) a1090 5 case Builtin::BIget_kernel_max_sub_group_size_for_ndrange: case Builtin::BIget_kernel_sub_group_count_for_ndrange: if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall)) return ExprError(); break; d1093 1 a1093 1 if (SemaBuiltinOSLogFormat(TheCall)) d1095 1 a1114 4 case llvm::Triple::hexagon: if (CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; a1223 1 #include "clang/Basic/arm_fp16.inc" d1273 3 a1275 4 #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #include "clang/Basic/arm_fp16.inc" #undef GET_NEON_IMMEDIATE_CHECK d1425 1 a1425 1 // FIXME: VFP Intrinsics should error if VFP not present. d1428 2 a1429 8 case ARM::BI__builtin_arm_ssat: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32); case ARM::BI__builtin_arm_usat: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31); case ARM::BI__builtin_arm_ssat16: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); case ARM::BI__builtin_arm_usat16: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); d1431 1 a1431 2 case ARM::BI__builtin_arm_vcvtr_d: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); d1435 1 a1435 2 case ARM::BI__builtin_arm_dbg: return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15); d1437 3 a1483 1009 bool Sema::CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall) { static const std::map> ValidCPU = { { Hexagon::BI__builtin_HEXAGON_A6_vcmpbeq_notany, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_A6_vminub_RdP, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vsplatrbp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunehb_ppp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunohb_ppp, {"v62", "v65"} }, }; static const std::map> ValidHVX = { { Hexagon::BI__builtin_HEXAGON_V6_extractw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_extractw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh_128B, {"v60", "v62", "v65"} }, }; const TargetInfo &TI = Context.getTargetInfo(); auto FC = ValidCPU.find(BuiltinID); if (FC != ValidCPU.end()) { const TargetOptions &Opts = TI.getTargetOpts(); StringRef CPU = Opts.CPU; if (!CPU.empty()) { assert(CPU.startswith("hexagon") && "Unexpected CPU name"); CPU.consume_front("hexagon"); if (llvm::none_of(FC->second, [CPU](StringRef S) { return S == CPU; })) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_cpu); } } auto FH = ValidHVX.find(BuiltinID); if (FH != ValidHVX.end()) { if (!TI.hasFeature("hvx")) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_requires_hvx); bool IsValid = llvm::any_of(FH->second, [&TI] (StringRef V) { std::string F = "hvx" + V.str(); return TI.hasFeature(F); }); if (!IsValid) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_hvx); } return false; } bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { struct ArgInfo { ArgInfo(unsigned O, bool S, unsigned W, unsigned A) : OpNum(O), IsSigned(S), BitWidth(W), Align(A) {} unsigned OpNum = 0; bool IsSigned = false; unsigned BitWidth = 0; unsigned Align = 0; }; static const std::map> Infos = { { Hexagon::BI__builtin_circ_ldd, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_ldw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_ldh, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_lduh, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldub, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_std, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_stw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_sth, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_sthhi, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_stb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_A2_combineii, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrih, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfril, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrpi, {{ 0, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_bitspliti, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cround_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_bitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_muxii, {{ 2, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2, {{ 1, false, 6, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractu, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractup, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insert, {{ 2, false, 5, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insertp, {{ 2, false, 6, 0 }, { 3, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_setbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_valignib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_vspliceib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbaddi, {{ 1, true , 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi, {{ 1, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extract, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extractp, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_lsli, {{ 0, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc, {{ 3, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate, {{ 2, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {{ 3, false, 1, 0 }} }, }; auto F = Infos.find(BuiltinID); if (F == Infos.end()) return false; bool Error = false; for (const ArgInfo &A : F->second) { int32_t Min = A.IsSigned ? -(1 << (A.BitWidth-1)) : 0; int32_t Max = (1 << (A.IsSigned ? A.BitWidth-1 : A.BitWidth)) - 1; if (!A.Align) { Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max); } else { unsigned M = 1 << A.Align; Min *= M; Max *= M; Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) | SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M); } } return Error; } bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { return CheckHexagonBuiltinCpu(BuiltinID, TheCall) || CheckHexagonBuiltinArgument(BuiltinID, TheCall); } d1532 1 a1532 1 // These intrinsics take an unsigned 5 bit immediate. a1792 20 /// SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *). /// This checks that the target supports __builtin_cpu_is and /// that the string argument is constant and valid. static bool SemaBuiltinCpuIs(Sema &S, CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); // Check if the argument is a string literal. if (!isa(Arg->IgnoreParenImpCasts())) return S.Diag(TheCall->getLocStart(), diag::err_expr_not_string_literal) << Arg->getSourceRange(); // Check the contents of the string. StringRef Feature = cast(Arg->IgnoreParenImpCasts())->getString(); if (!S.Context.getTargetInfo().validateCpuIs(Feature)) return S.Diag(TheCall->getLocStart(), diag::err_invalid_cpu_is) << Arg->getSourceRange(); return false; } a1811 6 case X86::BI__builtin_ia32_maxpd512: case X86::BI__builtin_ia32_maxps512: case X86::BI__builtin_ia32_minpd512: case X86::BI__builtin_ia32_minps512: ArgNum = 2; break; d1841 2 d1845 2 a1884 2 case X86::BI__builtin_ia32_sqrtpd512: case X86::BI__builtin_ia32_sqrtps512: a1887 8 case X86::BI__builtin_ia32_addpd512: case X86::BI__builtin_ia32_addps512: case X86::BI__builtin_ia32_divpd512: case X86::BI__builtin_ia32_divps512: case X86::BI__builtin_ia32_mulpd512: case X86::BI__builtin_ia32_mulps512: case X86::BI__builtin_ia32_subpd512: case X86::BI__builtin_ia32_subps512: d1908 2 d1913 8 a1937 6 case X86::BI__builtin_ia32_vfmaddsd3_mask: case X86::BI__builtin_ia32_vfmaddsd3_maskz: case X86::BI__builtin_ia32_vfmaddsd3_mask3: case X86::BI__builtin_ia32_vfmaddss3_mask: case X86::BI__builtin_ia32_vfmaddss3_maskz: case X86::BI__builtin_ia32_vfmaddss3_mask3: d1939 1 a1940 2 case X86::BI__builtin_ia32_vfmaddpd512_mask3: case X86::BI__builtin_ia32_vfmsubpd512_mask3: d1942 1 a1943 2 case X86::BI__builtin_ia32_vfmaddps512_mask3: case X86::BI__builtin_ia32_vfmsubps512_mask3: d1945 1 a1946 2 case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: d1948 1 d1950 3 a1952 1 case X86::BI__builtin_ia32_vfmaddsubps512_mask3: d1954 12 a2101 11 static bool isX86_32Builtin(unsigned BuiltinID) { // These builtins only work on x86-32 targets. switch (BuiltinID) { case X86::BI__builtin_ia32_readeflags_u32: case X86::BI__builtin_ia32_writeeflags_u32: return true; } return false; } a2105 9 if (BuiltinID == X86::BI__builtin_cpu_is) return SemaBuiltinCpuIs(*this, TheCall); // Check for 32-bit only builtins on a 64-bit target. const llvm::Triple &TT = Context.getTargetInfo().getTriple(); if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID)) return Diag(TheCall->getCallee()->getLocStart(), diag::err_32_bit_builtin_64_bit_tgt); d2120 1 a2120 40 case X86::BI__builtin_ia32_vec_ext_v2si: case X86::BI__builtin_ia32_vec_ext_v2di: case X86::BI__builtin_ia32_vextractf128_pd256: case X86::BI__builtin_ia32_vextractf128_ps256: case X86::BI__builtin_ia32_vextractf128_si256: case X86::BI__builtin_ia32_extract128i256: case X86::BI__builtin_ia32_extractf64x4_mask: case X86::BI__builtin_ia32_extracti64x4_mask: case X86::BI__builtin_ia32_extractf32x8_mask: case X86::BI__builtin_ia32_extracti32x8_mask: case X86::BI__builtin_ia32_extractf64x2_256_mask: case X86::BI__builtin_ia32_extracti64x2_256_mask: case X86::BI__builtin_ia32_extractf32x4_256_mask: case X86::BI__builtin_ia32_extracti32x4_256_mask: i = 1; l = 0; u = 1; break; case X86::BI__builtin_ia32_vec_set_v2di: case X86::BI__builtin_ia32_vinsertf128_pd256: case X86::BI__builtin_ia32_vinsertf128_ps256: case X86::BI__builtin_ia32_vinsertf128_si256: case X86::BI__builtin_ia32_insert128i256: case X86::BI__builtin_ia32_insertf32x8: case X86::BI__builtin_ia32_inserti32x8: case X86::BI__builtin_ia32_insertf64x4: case X86::BI__builtin_ia32_inserti64x4: case X86::BI__builtin_ia32_insertf64x2_256: case X86::BI__builtin_ia32_inserti64x2_256: case X86::BI__builtin_ia32_insertf32x4_256: case X86::BI__builtin_ia32_inserti32x4_256: i = 2; l = 0; u = 1; break; case X86::BI__builtin_ia32_vpermilpd: case X86::BI__builtin_ia32_vec_ext_v4hi: case X86::BI__builtin_ia32_vec_ext_v4si: case X86::BI__builtin_ia32_vec_ext_v4sf: case X86::BI__builtin_ia32_vec_ext_v4di: case X86::BI__builtin_ia32_extractf32x4_mask: case X86::BI__builtin_ia32_extracti32x4_mask: case X86::BI__builtin_ia32_extractf64x2_512_mask: case X86::BI__builtin_ia32_extracti64x2_512_mask: a2122 5 case X86::BI_mm_prefetch: case X86::BI__builtin_ia32_vec_ext_v8hi: case X86::BI__builtin_ia32_vec_ext_v8si: i = 1; l = 0; u = 7; break; d2124 4 a2127 13 case X86::BI__builtin_ia32_blendpd: case X86::BI__builtin_ia32_shufpd: case X86::BI__builtin_ia32_vec_set_v4hi: case X86::BI__builtin_ia32_vec_set_v4si: case X86::BI__builtin_ia32_vec_set_v4di: case X86::BI__builtin_ia32_shuf_f32x4_256: case X86::BI__builtin_ia32_shuf_f64x2_256: case X86::BI__builtin_ia32_shuf_i32x4_256: case X86::BI__builtin_ia32_shuf_i64x2_256: case X86::BI__builtin_ia32_insertf64x2_512: case X86::BI__builtin_ia32_inserti64x2_512: case X86::BI__builtin_ia32_insertf32x4: case X86::BI__builtin_ia32_inserti32x4: a2167 2 case X86::BI__builtin_ia32_vec_set_v8hi: case X86::BI__builtin_ia32_vec_set_v8si: a2169 1 case X86::BI__builtin_ia32_vpermilpd256: a2173 8 case X86::BI__builtin_ia32_getmantpd128_mask: case X86::BI__builtin_ia32_getmantpd256_mask: case X86::BI__builtin_ia32_getmantps128_mask: case X86::BI__builtin_ia32_getmantps256_mask: case X86::BI__builtin_ia32_getmantpd512_mask: case X86::BI__builtin_ia32_getmantps512_mask: case X86::BI__builtin_ia32_vec_ext_v16qi: case X86::BI__builtin_ia32_vec_ext_v16hi: a2175 4 case X86::BI__builtin_ia32_pblendd128: case X86::BI__builtin_ia32_blendps: case X86::BI__builtin_ia32_blendpd256: case X86::BI__builtin_ia32_shufpd256: a2185 2 case X86::BI__builtin_ia32_vec_set_v16qi: case X86::BI__builtin_ia32_vec_set_v16hi: a2187 3 case X86::BI__builtin_ia32_vec_ext_v32qi: i = 1; l = 0; u = 31; break; a2201 1 case X86::BI__builtin_ia32_vec_set_v32qi: d2204 7 a2210 17 case X86::BI__builtin_ia32_permdf256: case X86::BI__builtin_ia32_permdi256: case X86::BI__builtin_ia32_permdf512: case X86::BI__builtin_ia32_permdi512: case X86::BI__builtin_ia32_vpermilps: case X86::BI__builtin_ia32_vpermilps256: case X86::BI__builtin_ia32_vpermilpd512: case X86::BI__builtin_ia32_vpermilps512: case X86::BI__builtin_ia32_pshufd: case X86::BI__builtin_ia32_pshufd256: case X86::BI__builtin_ia32_pshufd512: case X86::BI__builtin_ia32_pshufhw: case X86::BI__builtin_ia32_pshufhw256: case X86::BI__builtin_ia32_pshufhw512: case X86::BI__builtin_ia32_pshuflw: case X86::BI__builtin_ia32_pshuflw256: case X86::BI__builtin_ia32_pshuflw512: a2211 1 case X86::BI__builtin_ia32_vcvtps2ph_mask: a2212 2 case X86::BI__builtin_ia32_vcvtps2ph256_mask: case X86::BI__builtin_ia32_vcvtps2ph512_mask: d2225 10 a2234 12 case X86::BI__builtin_ia32_prold512: case X86::BI__builtin_ia32_prolq512: case X86::BI__builtin_ia32_prold128: case X86::BI__builtin_ia32_prold256: case X86::BI__builtin_ia32_prolq128: case X86::BI__builtin_ia32_prolq256: case X86::BI__builtin_ia32_prord512: case X86::BI__builtin_ia32_prorq512: case X86::BI__builtin_ia32_prord128: case X86::BI__builtin_ia32_prord256: case X86::BI__builtin_ia32_prorq128: case X86::BI__builtin_ia32_prorq256: a2242 6 case X86::BI__builtin_ia32_pslldqi128_byteshift: case X86::BI__builtin_ia32_pslldqi256_byteshift: case X86::BI__builtin_ia32_pslldqi512_byteshift: case X86::BI__builtin_ia32_psrldqi128_byteshift: case X86::BI__builtin_ia32_psrldqi256_byteshift: case X86::BI__builtin_ia32_psrldqi512_byteshift: d2245 15 d2264 2 a2265 4 case X86::BI__builtin_ia32_pblendw128: case X86::BI__builtin_ia32_pblendw256: case X86::BI__builtin_ia32_blendps256: case X86::BI__builtin_ia32_pblendd256: d2268 1 a2268 7 case X86::BI__builtin_ia32_palignr512: case X86::BI__builtin_ia32_alignq512: case X86::BI__builtin_ia32_alignd512: case X86::BI__builtin_ia32_alignd128: case X86::BI__builtin_ia32_alignd256: case X86::BI__builtin_ia32_alignq128: case X86::BI__builtin_ia32_alignq256: d2271 7 a2277 29 case X86::BI__builtin_ia32_shuf_f32x4: case X86::BI__builtin_ia32_shuf_f64x2: case X86::BI__builtin_ia32_shuf_i32x4: case X86::BI__builtin_ia32_shuf_i64x2: case X86::BI__builtin_ia32_shufpd512: case X86::BI__builtin_ia32_shufps: case X86::BI__builtin_ia32_shufps256: case X86::BI__builtin_ia32_shufps512: case X86::BI__builtin_ia32_dbpsadbw128: case X86::BI__builtin_ia32_dbpsadbw256: case X86::BI__builtin_ia32_dbpsadbw512: case X86::BI__builtin_ia32_vpshldd128: case X86::BI__builtin_ia32_vpshldd256: case X86::BI__builtin_ia32_vpshldd512: case X86::BI__builtin_ia32_vpshldq128: case X86::BI__builtin_ia32_vpshldq256: case X86::BI__builtin_ia32_vpshldq512: case X86::BI__builtin_ia32_vpshldw128: case X86::BI__builtin_ia32_vpshldw256: case X86::BI__builtin_ia32_vpshldw512: case X86::BI__builtin_ia32_vpshrdd128: case X86::BI__builtin_ia32_vpshrdd256: case X86::BI__builtin_ia32_vpshrdd512: case X86::BI__builtin_ia32_vpshrdq128: case X86::BI__builtin_ia32_vpshrdq256: case X86::BI__builtin_ia32_vpshrdq512: case X86::BI__builtin_ia32_vpshrdw128: case X86::BI__builtin_ia32_vpshrdw256: case X86::BI__builtin_ia32_vpshrdw512: d2320 9 d2334 1 a2334 6 // Note that we don't force a hard error on the range check here, allowing // template-generated or macro-generated dead code to potentially have out-of- // range values. These need to code generate, but don't need to necessarily // make any sense. We use a warning that defaults to an error. return SemaBuiltinConstantArgRange(TheCall, i, l, u, /*RangeIsError*/ false); d2362 1 a2362 1 /// Returns true if the value evaluates to null. d2405 1 a2405 2 /// Diagnose use of %s directive in an NSString which is being passed d2475 2 a2476 3 for (const ParamIdx &Idx : NonNull->args()) { unsigned IdxAST = Idx.getASTIndex(); if (IdxAST >= Args.size()) d2480 1 a2480 1 NonNullArgs.set(IdxAST); d2598 1 a2598 1 CheckArgumentWithTypeTag(I, Args, Loc); a2736 1 case AtomicExpr::AO__opencl_atomic_init: a2739 1 case AtomicExpr::AO__opencl_atomic_load: a2745 1 case AtomicExpr::AO__opencl_atomic_store: d2762 1 a2762 3 // All the non-OpenCL operations take one of the following forms. // The OpenCL operations take the __c11 forms with one extra argument for // synchronization scope. a2765 1 a2767 1 a2769 1 a2771 1 a2773 1 a2775 1 a2777 1 a2779 1 a2782 2 const unsigned NumForm = GNUCmpXchg + 1; a2791 3 static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm, "need to update code for modified forms"); d2796 2 a2797 5 bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init && Op <= AtomicExpr::AO__opencl_atomic_fetch_max; bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor) || IsOpenCL; a2802 1 bool IsMinMax = false; a2805 1 case AtomicExpr::AO__opencl_atomic_init: a2809 1 case AtomicExpr::AO__opencl_atomic_load: a2818 1 case AtomicExpr::AO__opencl_atomic_store: a2825 4 case AtomicExpr::AO__opencl_atomic_fetch_add: case AtomicExpr::AO__opencl_atomic_fetch_sub: case AtomicExpr::AO__opencl_atomic_fetch_min: case AtomicExpr::AO__opencl_atomic_fetch_max: d2831 1 a2831 1 LLVM_FALLTHROUGH; a2834 3 case AtomicExpr::AO__opencl_atomic_fetch_and: case AtomicExpr::AO__opencl_atomic_fetch_or: case AtomicExpr::AO__opencl_atomic_fetch_xor: a2845 6 case AtomicExpr::AO__atomic_fetch_min: case AtomicExpr::AO__atomic_fetch_max: IsMinMax = true; Form = Arithmetic; break; a2846 1 case AtomicExpr::AO__opencl_atomic_exchange: a2856 2 case AtomicExpr::AO__opencl_atomic_compare_exchange_strong: case AtomicExpr::AO__opencl_atomic_compare_exchange_weak: a2865 3 unsigned AdjustedNumArgs = NumArgs[Form]; if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init) ++AdjustedNumArgs; d2867 1 a2867 1 if (TheCall->getNumArgs() < AdjustedNumArgs) { d2869 1 a2869 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2872 2 a2873 2 } else if (TheCall->getNumArgs() > AdjustedNumArgs) { Diag(TheCall->getArg(AdjustedNumArgs)->getLocStart(), d2875 1 a2875 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2903 1 a2903 2 if (AtomTy.isConstQualified() || AtomTy.getAddressSpace() == LangAS::opencl_constant) { d2905 1 a2905 2 << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType() << Ptr->getSourceRange(); d2920 1 a2920 2 if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { d2925 1 a2925 9 if (IsMinMax) { const BuiltinType *BT = ValType->getAs(); if (!BT || (BT->getKind() != BuiltinType::Int && BT->getKind() != BuiltinType::UInt)) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_int32_or_ptr); return ExprError(); } } if (!IsAddSub && !IsMinMax && !ValType->isIntegerType()) { d2968 3 a2970 4 // All atomic operations have an overload which takes a pointer to a volatile // 'A'. We shouldn't let the volatile-ness of the pointee-type inject itself // into the result or the other operands. Similarly atomic_load takes a // pointer to a const 'A'. d2974 1 a2974 2 if (Form == Copy || Form == LoadCopy || Form == GNUXchg || Form == Init) d2982 1 a2982 2 bool IsPassedByAddress = false; if (!IsC11 && !IsN) { a2983 2 IsPassedByAddress = true; } d2985 4 a2988 6 // The first argument's non-CV pointer type is used to deduce the type of // subsequent arguments, except for: // - weak flag (always converted to bool) // - memory order (always converted to int) // - scope (always converted to int) for (unsigned i = 0; i != TheCall->getNumArgs(); ++i) { a2991 6 case 0: // The first argument is always a pointer. It has a fixed type. // It is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); // Nothing else to do: we already know all we want about this pointer. continue; d3000 1 a3000 4 else if (Form == Copy || Form == Xchg) { if (IsPassedByAddress) // The value pointer is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3002 1 a3002 1 } else if (Form == Arithmetic) d3006 2 a3007 1 // The value pointer is always dereferenced, a nullptr is undefined. d3009 1 a3009 1 LangAS AS = LangAS::Default; d3020 2 a3021 4 // The third argument to compare_exchange / GNU exchange is the desired // value, either by-value (for the C11 and *_n variant) or as a pointer. if (IsPassedByAddress) CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3030 1 a3030 1 // The order(s) and scope are always converted to int. a3090 11 if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) { auto *Scope = TheCall->getArg(TheCall->getNumArgs() - 1); llvm::APSInt Result(32); if (Scope->isIntegerConstantExpr(Result, Context) && !ScopeModel->isValid(Result.getZExtValue())) { Diag(Scope->getLocStart(), diag::err_atomic_op_has_invalid_synch_scope) << Scope->getSourceRange(); } SubExprs.push_back(Scope); } d3096 1 a3096 3 Op == AtomicExpr::AO__c11_atomic_store || Op == AtomicExpr::AO__opencl_atomic_load || Op == AtomicExpr::AO__opencl_atomic_store ) && d3098 2 a3099 4 Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load || Op == AtomicExpr::AO__opencl_atomic_load) ? 0 : 1); a3176 6 if (ValType.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_cannot_be_const) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } d3382 1 a3382 1 case Builtin::BI__sync_lock_test_and_set: d3634 1 a3634 1 CallingConv CC = CC_C; d3781 1 a3781 1 bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) { d3800 7 a3806 1 // __va_start on Windows does not validate the parameter qualifiers d3808 9 a3816 25 const Expr *Arg1 = Call->getArg(1)->IgnoreParens(); const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr(); const Expr *Arg2 = Call->getArg(2)->IgnoreParens(); const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr(); const QualType &ConstCharPtrTy = Context.getPointerType(Context.CharTy.withConst()); if (!Arg1Ty->isPointerType() || Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy) Diag(Arg1->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg1->getType() << ConstCharPtrTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 2 << Arg1->getType() << ConstCharPtrTy; const QualType SizeTy = Context.getSizeType(); if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy) Diag(Arg2->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg2->getType() << SizeTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 3 << Arg2->getType() << SizeTy; d3889 1 a3889 2 // If this is an implicit conversion from float -> float, double, or // long double, remove it. d3895 3 a3897 6 assert( (Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && "promotion from float to either float, double, or long double is " "the only expected cast here"); d4146 1 a4146 1 if (Result > std::numeric_limits::max()) d4148 1 a4148 1 << std::numeric_limits::max() d4293 1 a4293 1 int Low, int High, bool RangeIsError) { d4305 3 a4307 12 if (Result.getSExtValue() < Low || Result.getSExtValue() > High) { if (RangeIsError) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange(); else // Defer the warning until we know if the code will be emitted so that // dead code can ignore this. DiagRuntimeBehavior(TheCall->getLocStart(), TheCall, PDiag(diag::warn_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange()); } d4413 1 a4466 1 d4469 1 a4469 2 signed FirstUncoveredArg = Unknown; d4473 1 a4473 1 UncoveredArgHandler() = default; d4517 1 a4517 2 } // namespace d4550 1 a4550 2 assert(BitWidth <= std::numeric_limits::max() / 2 && "index (intermediate) result too big"); a4559 1 a4577 1 a4602 1 d4605 1 a4605 2 } // namespace d4692 1 a4692 1 case Stmt::ImplicitCastExprClass: d4695 1 d4786 12 a4797 16 bool IsFirst = true; StringLiteralCheckType CommonResult; for (const auto *FA : ND->specific_attrs()) { const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex()); StringLiteralCheckType Result = checkFormatStringExpr( S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); if (IsFirst) { CommonResult = Result; IsFirst = false; } } if (!IsFirst) return CommonResult; if (const auto *FD = dyn_cast(ND)) { d4817 2 a4818 1 const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex()); d4884 1 a4884 1 if (UnaOp->getOpcode() == UO_AddrOf && ASE) { a5016 1 d5030 2 a5031 2 bool usesPositionalArgs = false; bool atFirstArg = true; d5049 1 d5119 1 a5119 2 } // namespace d5421 1 a5421 1 /// If the format string is not within the function call, emit a note a5472 1 d5537 1 a5537 2 } // namespace d5655 4 d5725 1 a5725 2 using MethodSet = llvm::SmallPtrSet; d5740 1 a5740 1 using MethodSet = llvm::SmallPtrSet; d5768 1 a5768 2 using namespace analyze_printf; d6012 3 a6014 3 .Case("CFIndex", Context.getNSIntegerType()) .Case("NSInteger", Context.getNSIntegerType()) .Case("NSUInteger", Context.getNSUIntegerType()) a6065 1 d6077 3 a6079 4 const analyze_printf::ArgType::MatchKind Match = AT.matchesType(S.Context, ExprTy); bool Pedantic = Match == analyze_printf::ArgType::NoMatchPedantic; if (Match == analyze_printf::ArgType::Match) d6081 1 a6156 6 // %zi/%zu and %td/%tu are OK to use for NSInteger/NSUInteger of type int // (long in ASTContext). Only complain to pedants. if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") && (AT.isSizeT() || AT.isPtrdiffT()) && AT.matchesType(S.Context, CastTy)) Pedantic = true; d6164 1 a6164 1 bool Success = d6167 1 a6167 1 if (Success) { d6176 4 a6179 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6182 1 a6182 1 EmitFormatDiagnostic(S.PDiag(Diag) d6203 1 a6203 1 if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly) d6235 3 a6237 5 unsigned Diag = Pedantic ? diag::warn_format_argument_needs_cast_pedantic : diag::warn_format_argument_needs_cast; EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum << E->getSourceRange(), d6261 4 a6264 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6267 1 a6267 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy a6317 1 d6344 1 a6344 2 } // namespace d6357 1 d6449 1 a6449 1 analyze_format_string::ArgType::MatchKind Match = d6451 1 a6451 2 bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic; if (Match == analyze_format_string::ArgType::Match) d6453 1 d6456 1 a6456 1 bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), d6459 4 a6462 3 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6464 1 a6464 1 if (Success) { d6471 1 a6471 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) d6479 1 a6479 1 EmitFormatDiagnostic(S.PDiag(Diag) d7032 1 a7032 1 /// Takes the expression passed to the size_t parameter of functions d7044 2 a7045 2 // if E is binop and op is <=>, >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isLogicalOp()) d7063 1 a7063 1 /// Determine whether the given type is or contains a dynamic class type d7094 1 a7094 1 /// If E is a sizeof expression, returns its argument expression, d7099 1 a7099 1 if (SizeOf->getKind() == UETT_SizeOf && !SizeOf->isArgumentType()) d7105 1 a7105 1 /// If E is a sizeof expression, returns its argument type. d7109 1 a7109 1 if (SizeOf->getKind() == UETT_SizeOf) d7115 1 a7115 93 namespace { struct SearchNonTrivialToInitializeField : DefaultInitializedTypeVisitor { using Super = DefaultInitializedTypeVisitor; SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PDIK, AT, SL); return; } Super::visitWithKind(PDIK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void visitTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; struct SearchNonTrivialToCopyField : CopiedTypeVisitor { using Super = CopiedTypeVisitor; SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PCK, AT, SL); return; } Super::visitWithKind(PCK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) {} void visitTrivial(QualType FT, SourceLocation SL) {} void visitVolatileTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; } /// Check for dangerous or invalid arguments to memset(). d7280 1 a7280 17 else if (const auto *RT = PointeeTy->getAs()) { if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) && RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 0); SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this); } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) && RT->getDecl()->isNonTrivialToPrimitiveCopy()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 1); SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this); } else { continue; } } else d7297 1 a7297 1 while (true) { d7515 1 d7934 1 a7934 1 if (!Proto->isNothrow(/*ResultIfDependent*/true) && d8000 2 a8001 1 : Width(Width), NonNegative(NonNegative) {} d8025 2 a8026 6 if (!C.getLangOpts().CPlusPlus) { // For enum types in C code, use the underlying datatype. if (const EnumType *ET = dyn_cast(T)) T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr(); } else if (const EnumType *ET = dyn_cast(T)) { // For enum types in C++, use the known bit width of the enumerators. d8028 2 a8029 6 // In C++11, enums can have a fixed underlying type. Use this type to // compute the range. if (Enum->isFixed()) { return IntRange(C.getIntWidth(QualType(T, 0)), !ET->isSignedIntegerOrEnumerationType()); } d8083 1 a8083 4 } // namespace static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { d8095 2 a8096 2 static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { d8124 1 a8124 1 static QualType GetExprType(const Expr *E) { d8135 1 a8135 1 static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) { a8188 2 case BO_Cmp: llvm_unreachable("builtin <=> should have class type"); d8241 1 a8241 1 LLVM_FALLTHROUGH; d8353 1 a8353 1 static IntRange GetExprRange(ASTContext &C, const Expr *E) { d8360 3 a8362 3 static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8377 3 a8379 3 static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8395 1 a8395 1 static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); d8397 1 a8397 1 static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) { d8402 1 a8402 1 return true; d8406 1 a8406 1 return true; d8408 2 a8409 132 return false; } static bool isKnownToHaveUnsignedValue(Expr *E) { return E->getType()->isIntegerType() && (!E->getType()->isSignedIntegerType() || !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType()); } namespace { /// The promoted range of values of a type. In general this has the /// following structure: /// /// |-----------| . . . |-----------| /// ^ ^ ^ ^ /// Min HoleMin HoleMax Max /// /// ... where there is only a hole if a signed type is promoted to unsigned /// (in which case Min and Max are the smallest and largest representable /// values). struct PromotedRange { // Min, or HoleMax if there is a hole. llvm::APSInt PromotedMin; // Max, or HoleMin if there is a hole. llvm::APSInt PromotedMax; PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) { if (R.Width == 0) PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned); else if (R.Width >= BitWidth && !Unsigned) { // Promotion made the type *narrower*. This happens when promoting // a < 32-bit unsigned / <= 32-bit signed bit-field to 'signed int'. // Treat all values of 'signed int' as being in range for now. PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned); PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned); } else { PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMin.setIsUnsigned(Unsigned); PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMax.setIsUnsigned(Unsigned); } } // Determine whether this range is contiguous (has no hole). bool isContiguous() const { return PromotedMin <= PromotedMax; } // Where a constant value is within the range. enum ComparisonResult { LT = 0x1, LE = 0x2, GT = 0x4, GE = 0x8, EQ = 0x10, NE = 0x20, InRangeFlag = 0x40, Less = LE | LT | NE, Min = LE | InRangeFlag, InRange = InRangeFlag, Max = GE | InRangeFlag, Greater = GE | GT | NE, OnlyValue = LE | GE | EQ | InRangeFlag, InHole = NE }; ComparisonResult compare(const llvm::APSInt &Value) const { assert(Value.getBitWidth() == PromotedMin.getBitWidth() && Value.isUnsigned() == PromotedMin.isUnsigned()); if (!isContiguous()) { assert(Value.isUnsigned() && "discontiguous range for signed compare"); if (Value.isMinValue()) return Min; if (Value.isMaxValue()) return Max; if (Value >= PromotedMin) return InRange; if (Value <= PromotedMax) return InRange; return InHole; } switch (llvm::APSInt::compareValues(Value, PromotedMin)) { case -1: return Less; case 0: return PromotedMin == PromotedMax ? OnlyValue : Min; case 1: switch (llvm::APSInt::compareValues(Value, PromotedMax)) { case -1: return InRange; case 0: return Max; case 1: return Greater; } } llvm_unreachable("impossible compare result"); } static llvm::Optional constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) { if (Op == BO_Cmp) { ComparisonResult LTFlag = LT, GTFlag = GT; if (ConstantOnRHS) std::swap(LTFlag, GTFlag); if (R & EQ) return StringRef("'std::strong_ordering::equal'"); if (R & LTFlag) return StringRef("'std::strong_ordering::less'"); if (R & GTFlag) return StringRef("'std::strong_ordering::greater'"); return llvm::None; } ComparisonResult TrueFlag, FalseFlag; if (Op == BO_EQ) { TrueFlag = EQ; FalseFlag = NE; } else if (Op == BO_NE) { TrueFlag = NE; FalseFlag = EQ; } else { if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) { TrueFlag = LT; FalseFlag = GE; } else { TrueFlag = GT; FalseFlag = LE; } if (Op == BO_GE || Op == BO_LE) std::swap(TrueFlag, FalseFlag); } if (R & TrueFlag) return StringRef("true"); if (R & FalseFlag) return StringRef("false"); return llvm::None; } }; d8412 1 a8412 1 static bool HasEnumType(Expr *E) { d8424 2 a8425 18 static int classifyConstantValue(Expr *Constant) { // The values of this enumeration are used in the diagnostics // diag::warn_out_of_range_compare and diag::warn_tautological_bool_compare. enum ConstantValueKind { Miscellaneous = 0, LiteralTrue, LiteralFalse }; if (auto *BL = dyn_cast(Constant)) return BL->getValue() ? ConstantValueKind::LiteralTrue : ConstantValueKind::LiteralFalse; return ConstantValueKind::Miscellaneous; } static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, const llvm::APSInt &Value, bool RhsConstant) { d8427 1 a8427 1 return false; d8429 3 a8431 1 Expr *OriginalOther = Other; d8433 18 a8450 2 Constant = Constant->IgnoreParenImpCasts(); Other = Other->IgnoreParenImpCasts(); d8452 6 a8457 10 // Suppress warnings on tautological comparisons between values of the same // enumeration type. There are only two ways we could warn on this: // - If the constant is outside the range of representable values of // the enumeration. In such a case, we should warn about the cast // to enumeration type, not about the comparison. // - If the constant is the maximum / minimum in-range value. For an // enumeratin type, such comparisons can be meaningful and useful. if (Constant->getType()->isEnumeralType() && S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType())) return false; d8465 138 d8604 25 a8628 15 // Whether we're treating Other as being a bool because of the form of // expression despite it having another type (typically 'int' in C). bool OtherIsBooleanDespiteType = !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue(); if (OtherIsBooleanDespiteType) OtherRange = IntRange::forBoolType(); // Determine the promoted range of the other type and see if a comparison of // the constant against that range is tautological. PromotedRange OtherPromotedRange(OtherRange, Value.getBitWidth(), Value.isUnsigned()); auto Cmp = OtherPromotedRange.compare(Value); auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant); if (!Result) return false; d8630 8 a8637 9 // Suppress the diagnostic for an in-range comparison if the constant comes // from a macro or enumerator. We don't want to diagnose // // some_long_value <= INT_MAX // // when sizeof(int) == sizeof(long). bool InRange = Cmp & PromotedRange::InRangeFlag; if (InRange && IsEnumConstOrFromMacro(S, Constant)) return false; a8644 1 // Should be enough for uint128 (39 decimal digits) d8652 6 a8657 24 // FIXME: We use a somewhat different formatting for the in-range cases and // cases involving boolean values for historical reasons. We should pick a // consistent way of presenting these diagnostics. if (!InRange || Other->isKnownToHaveBooleanValue()) { S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(!InRange ? diag::warn_out_of_range_compare : diag::warn_tautological_bool_compare) << OS.str() << classifyConstantValue(Constant) << OtherT << OtherIsBooleanDespiteType << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); } else { unsigned Diag = (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0) ? (HasEnumType(OriginalOther) ? diag::warn_unsigned_enum_always_true_comparison : diag::warn_unsigned_always_true_comparison) : diag::warn_tautological_constant_compare; S.Diag(E->getOperatorLoc(), Diag) << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } return true; d8662 1 a8662 1 static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { d8667 1 a8667 1 /// Implements -Wsign-compare. d8670 1 a8670 1 static void AnalyzeComparison(Sema &S, BinaryOperator *E) { d8683 7 a8689 3 Expr *LHS = E->getLHS(); Expr *RHS = E->getRHS(); d8692 2 d8695 19 a8713 27 bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); // We don't care about expressions whose result is a constant. if (IsRHSIntegralLiteral && IsLHSIntegralLiteral) return AnalyzeImpConvsInComparison(S, E); // We only care about expressions where just one side is literal if (IsRHSIntegralLiteral ^ IsLHSIntegralLiteral) { // Is the constant on the RHS or LHS? const bool RhsConstant = IsRHSIntegralLiteral; Expr *Const = RhsConstant ? RHS : LHS; Expr *Other = RhsConstant ? LHS : RHS; const llvm::APSInt &Value = RhsConstant ? RHSValue : LHSValue; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant)) return AnalyzeImpConvsInComparison(S, E); } } if (!T->hasUnsignedIntegerRepresentation()) { // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. d8715 1 a8715 15 } LHS = LHS->IgnoreParenImpCasts(); RHS = RHS->IgnoreParenImpCasts(); if (!S.getLangOpts().CPlusPlus) { // Avoid warning about comparison of integers with different signs when // RHS/LHS has a `typeof(E)` type whose sign is different from the sign of // the type of `E`. if (const auto *TET = dyn_cast(LHS->getType())) LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); if (const auto *TET = dyn_cast(RHS->getType())) RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); } d8728 1 d8740 3 a8742 1 // If the signed range is non-negative, -Wsign-compare won't fire. d8744 1 a8744 1 return; d8771 2 a8772 2 static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { d8902 1 a8902 1 static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { d8921 3 a8923 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d8936 2 a8937 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { a8940 8 /// Analyze the given compound assignment for the possible losing of /// floating-point precision. static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) { assert(isa(E) && "Must be compound assignment operation"); // Recurse on the LHS and RHS in here AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); d8942 2 a8943 17 // Now check the outermost expression const auto *ResultBT = E->getLHS()->getType()->getAs(); const auto *RBT = cast(E) ->getComputationResultType() ->getAs(); // If both source and target are floating points. if (ResultBT && ResultBT->isFloatingPoint() && RBT && RBT->isFloatingPoint()) // Builtin FP kinds are ordered by increasing FP rank. if (ResultBT->getKind() < RBT->getKind()) // We don't want to warn for system macro. if (!S.SourceMgr.isInSystemMacro(E->getOperatorLoc())) // warn about dropping FP rank. DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(), diag::warn_impcast_float_result_precision); } d8945 1 a8945 3 /// Diagnose an implicit cast from a floating point value to an integer value. static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext) { d8970 3 a8972 4 llvm::APFloat::opStatus Result = Value.convertToInteger( IntegerValue, llvm::APFloat::rmTowardZero, &isExact); if (Result == llvm::APFloat::opOK && isExact) { a8977 9 // Conversion of a floating-point value to a non-bool integer where the // integral part cannot be represented by the integer type is undefined. if (!IsBool && Result == llvm::APFloat::opInvalidOp) return DiagnoseImpCast( S, E, T, CContext, IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range : diag::warn_impcast_float_to_integer_out_of_range, PruneWarnings); d9035 1 a9035 2 static std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { d9044 1 a9044 1 static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { d9063 2 a9064 2 static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { d9084 1 a9084 2 static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9109 5 a9113 2 Loc = S.SourceMgr.getTopMacroCallerLoc(Loc); CC = S.SourceMgr.getTopMacroCallerLoc(CC); d9120 1 a9120 1 Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin(); d9128 1 a9128 1 << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC) d9133 4 a9136 6 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); d9140 2 a9141 4 static void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { d9170 2 a9171 2 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { d9198 2 a9199 3 static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { d9227 2 a9228 2 static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9251 2 a9252 3 static void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = nullptr) { d9304 1 a9304 1 d9319 1 a9319 1 if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType()) d9322 1 a9322 4 return DiagnoseImpCast(S, E, T, CC, S.getLangOpts().CPlusPlus ? diag::err_impcast_complex_scalar : diag::warn_impcast_complex_scalar); d9517 2 a9518 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); d9520 2 a9521 2 static void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { d9532 2 a9533 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { d9562 1 a9562 1 static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { d9571 1 a9571 2 static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { d9577 1 a9577 1 a9620 3 // And with compound assignments. if (BO->isAssignmentOp()) return AnalyzeCompoundAssignment(S, BO); d9664 3 a9666 1 /// Diagnose integer type and any valid implicit conversion to it. d9729 1 a9729 1 /// Diagnose pointers that are always non-null. d9833 2 a9834 2 for (const ParamIdx &ArgNo : NonNull->args()) { if (ArgNo.getASTIndex() == ParamNo) { d9955 1 a9955 2 Expr *OriginalE = Exprs.pop_back_val(); Expr *E = OriginalE->IgnoreParenCasts(); d9957 2 a9958 2 if (isa(E)) { E->EvaluateForOverflow(Context); d9962 1 a9962 1 if (auto InitList = dyn_cast(OriginalE)) d9964 3 a9966 6 else if (isa(OriginalE)) E->EvaluateForOverflow(Context); else if (auto Call = dyn_cast(E)) Exprs.append(Call->arg_begin(), Call->arg_end()); else if (auto Message = dyn_cast(E)) Exprs.append(Message->arg_begin(), Message->arg_end()); d9971 1 a9971 2 /// Visitor for expressions which looks for unsequenced operations on the d9974 1 a9974 1 using Base = EvaluatedExprVisitor; d9976 1 a9976 1 /// A tree of sequenced regions within an expression. Two regions are d9990 1 a9990 1 /// A region within an expression which may be sequenced with respect d9993 2 a9995 5 unsigned Index = 0; explicit Seq(unsigned N) : Index(N) {} d9997 1 a9997 1 Seq() = default; d10003 1 a10003 1 /// Create a new sequence of operations, which is an unsequenced d10011 1 a10011 1 /// Merge a sequence of operations into its parent. d10016 1 a10016 1 /// Determine whether two operations are unsequenced. This operation d10031 1 a10031 1 /// Pick a representative for a sequence. d10041 1 a10041 1 using Object = NamedDecl *; a10047 1 a10050 1 d10059 2 a10060 1 Expr *Use = nullptr; a10061 2 Usage() = default; d10065 1 a10066 1 d10068 1 a10068 3 bool Diagnosed = false; UsageInfo() = default; d10070 1 a10070 1 using UsageInfoMap = llvm::SmallDenseMap; a10072 1 a10074 1 a10076 1 a10078 1 d10081 1 a10081 2 SmallVectorImpl> *ModAsSideEffect = nullptr; a10095 1 d10108 1 a10108 1 SmallVectorImpl> *OldModAsSideEffect; d10118 1 a10118 1 : Self(Self), Prev(Self.EvalTracker) { a10120 1 d10137 2 a10138 2 bool EvalOK = true; } *EvalTracker = nullptr; d10140 1 a10140 1 /// Find the object which is produced by the specified expression, d10162 1 a10162 1 /// Note that an object was modified or used by an expression. d10172 1 a10172 2 /// Check whether a modification or use conflicts with a prior usage. a10198 1 a10210 1 d10219 2 a10220 1 : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) { d10454 1 a10454 2 } // namespace d10549 17 a10565 12 // If the parameter is a c++ class type and it has to be destructed in the // callee function, declare the destructor so that it can be called by the // callee function. Do not perform any direct access check on the dtor here. if (!Param->isInvalidDecl()) { if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) { if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext() && ClassDecl->isParamDestroyedInCallee()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); d10648 1 a10648 1 /// Check whether this array fits the idiom of a size-one tail padded d10718 1 a10718 1 ND = DRE->getDecl(); d10720 1 a10720 1 ND = ME->getMemberDecl(); d10803 1 a10803 1 ND = DRE->getDecl(); d10805 1 a10805 1 ND = ME->getMemberDecl(); d10823 1 a10823 6 expr = ASE->getBase(); break; } case Stmt::MemberExprClass: { expr = cast(expr)->getBase(); break; d10871 13 a10883 16 struct RetainCycleOwner { VarDecl *Variable = nullptr; SourceRange Range; SourceLocation Loc; bool Indirect = false; RetainCycleOwner() = default; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } // namespace a10979 1 d10981 4 d10987 2 a10988 6 Expr *Capturer = nullptr; bool VarWillBeReased = false; FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Context(Context), Variable(variable) {} a11012 1 d11029 1 a11029 2 } // namespace d11227 1 a11227 1 << ArgRE->getDecl() << StringRef("'super'"); d11243 1 a11243 1 << Decl << Decl; d11247 1 a11247 1 << Decl; d11257 1 a11257 1 << Decl << Decl; d11260 1 a11260 1 << Decl; d11286 2 a11287 6 const ObjCMethodDecl *MD = msg->getMethodDecl(); for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) { if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) { // noescape blocks should not be retained by the method. if (MD && MD->parameters()[i]->hasAttr()) continue; a11288 2 } } d11436 4 a11439 3 static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { d11445 1 d11468 1 d11580 3 a11582 1 if (!CE->isCallToStdMove()) d11650 3 a11652 1 static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); d11654 2 a11655 2 /// Check if two enumeration types are layout-compatible. static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { d11663 2 a11664 3 /// Check if two fields are layout-compatible. static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { d11683 1 a11683 1 /// Check if two standard-layout structs are layout-compatible. d11685 3 a11687 2 static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11728 1 a11728 1 /// Check if two standard-layout unions are layout-compatible. d11730 3 a11732 2 static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11757 1 a11757 2 static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11767 2 a11768 2 /// Check if two types are layout-compatible in C++11 sense. static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { d11802 1 d11806 2 a11807 1 /// Given a type tag expression find the type tag itself. d11814 2 a11815 2 static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { d11878 1 a11878 1 /// Retrieve the C type corresponding to type tag TypeExpr. d11890 1 a11890 1 static bool GetMatchingCType( d11933 1 d11948 2 a11949 1 static bool IsSameCharType(QualType T1, QualType T2) { d11966 1 d11969 1 a11969 2 const ArrayRef ExprArgs, SourceLocation CallSiteLoc) { d11973 1 a11973 8 // Retrieve the argument representing the 'type_tag'. unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex(); if (TypeTagIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 0 << Attr->getTypeTagIdx().getSourceIndex(); return; } const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST]; d11986 1 a11986 8 // Retrieve the argument representing the 'arg_idx'. unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex(); if (ArgumentIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 1 << Attr->getArgumentIdx().getSourceIndex(); return; } const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST]; d12077 2 a12078 3 (T->isPointerType() && (T->getPointeeType()->isIncompleteType() || Context.getTypeAlignInChars( T->getPointeeType()) <= MA->Alignment)))) a12194 1 d12199 1 @ 1.1.1.14 log @Import clang r337282 from trunk @ text @d1 1 a1 1 //===- SemaChecking.cpp - Extra Semantic Checking -------------------------===// a14 1 #include "clang/AST/APValue.h" a15 2 #include "clang/AST/Attr.h" #include "clang/AST/AttrIterator.h" a16 2 #include "clang/AST/Decl.h" #include "clang/AST/DeclBase.h" a18 1 #include "clang/AST/DeclarationName.h" d24 2 a25 8 #include "clang/AST/NSAPI.h" #include "clang/AST/NonTrivialTypeVisitor.h" #include "clang/AST/OperationKinds.h" #include "clang/AST/Stmt.h" #include "clang/AST/TemplateBase.h" #include "clang/AST/Type.h" #include "clang/AST/TypeLoc.h" #include "clang/AST/UnresolvedSet.h" a26 1 #include "clang/Basic/AddressSpaces.h" a27 11 #include "clang/Basic/Diagnostic.h" #include "clang/Basic/IdentifierTable.h" #include "clang/Basic/LLVM.h" #include "clang/Basic/LangOptions.h" #include "clang/Basic/OpenCLOptions.h" #include "clang/Basic/OperatorKinds.h" #include "clang/Basic/PartialDiagnostic.h" #include "clang/Basic/SourceLocation.h" #include "clang/Basic/SourceManager.h" #include "clang/Basic/Specifiers.h" #include "clang/Basic/SyncScope.h" a28 1 #include "clang/Basic/TargetCXXABI.h" a29 1 #include "clang/Basic/TypeTraits.h" a32 2 #include "clang/Sema/Ownership.h" #include "clang/Sema/Scope.h" a35 8 #include "llvm/ADT/APFloat.h" #include "llvm/ADT/APInt.h" #include "llvm/ADT/APSInt.h" #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/FoldingSet.h" #include "llvm/ADT/None.h" #include "llvm/ADT/Optional.h" a37 1 #include "llvm/ADT/SmallPtrSet.h" a38 7 #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/StringRef.h" #include "llvm/ADT/StringSwitch.h" #include "llvm/ADT/Triple.h" #include "llvm/Support/AtomicOrdering.h" #include "llvm/Support/Casting.h" #include "llvm/Support/Compiler.h" a39 1 #include "llvm/Support/ErrorHandling.h" a41 1 #include "llvm/Support/MathExtras.h" a42 9 #include #include #include #include #include #include #include #include #include a100 22 static bool SemaBuiltinMSVCAnnotation(Sema &S, CallExpr *TheCall) { // We need at least one argument. if (TheCall->getNumArgs() < 1) { S.Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return true; } // All arguments should be wide string literals. for (Expr *Arg : TheCall->arguments()) { auto *Literal = dyn_cast(Arg->IgnoreParenCasts()); if (!Literal || !Literal->isWide()) { S.Diag(Arg->getLocStart(), diag::err_msvc_annotation_wide_str) << Arg->getSourceRange(); return true; } } return false; } d123 2 a124 2 ExprResult Arg = TheCall->getArg(I); QualType Ty = Arg.get()->getType(); d126 2 a127 2 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_int) << Ty << Arg.get()->getSourceRange(); a129 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(I, Arg.get()); d136 2 a137 2 ExprResult Arg = TheCall->getArg(2); QualType Ty = Arg.get()->getType(); d141 2 a142 3 S.Diag(Arg.get()->getLocStart(), diag::err_overflow_builtin_must_be_ptr_int) << Ty << Arg.get()->getSourceRange(); a144 6 InitializedEntity Entity = InitializedEntity::InitializeParameter( S.getASTContext(), Ty, /*consume*/ false); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(2, Arg.get()); d146 1 a301 35 static bool checkOpenCLSubgroupExt(Sema &S, CallExpr *Call) { if (!S.getOpenCLOptions().isEnabled("cl_khr_subgroups")) { S.Diag(Call->getLocStart(), diag::err_opencl_requires_extension) << 1 << Call->getDirectCallee() << "cl_khr_subgroups"; return true; } return false; } static bool SemaOpenCLBuiltinNDRangeAndBlock(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; if (checkOpenCLSubgroupExt(S, TheCall)) return true; // First argument is an ndrange_t type. Expr *NDRangeArg = TheCall->getArg(0); if (NDRangeArg->getType().getUnqualifiedType().getAsString() != "ndrange_t") { S.Diag(NDRangeArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "'ndrange_t'"; return true; } Expr *BlockArg = TheCall->getArg(1); if (!isBlockPointer(BlockArg)) { S.Diag(BlockArg->getLocStart(), diag::err_opencl_builtin_expected_type) << TheCall->getDirectCallee() << "block"; return true; } return checkOpenCLBlockArgs(S, BlockArg); } d575 1 a575 1 // Performs semantic analysis for the read/write_pipe call. d583 1 a583 1 case 2: d591 1 a591 1 break; d629 1 a629 1 // Performs a semantic analysis on the {work_group_/sub_group_ a649 5 // Since return type of reserve_read/write_pipe built-in function is // reserve_id_t, which is not defined in the builtin def file , we used int // as return type and need to override the return type of these functions. Call->setType(S.Context.OCLReserveIDTy); d653 1 a653 1 // Performs a semantic analysis on {work_group_/sub_group_ d676 1 a676 1 // Performs a semantic analysis on the call to built-in Pipe d693 2 a694 3 // OpenCL v2.0 s6.13.9 - Address space qualifier functions. // Performs semantic analysis for the to_global/local/private call. a723 3 case Builtin::BIto_private: Qual.setAddressSpace(LangAS::opencl_private); break; d725 1 a725 1 llvm_unreachable("Invalid builtin function"); a732 14 // Emit an error and return true if the current architecture is not in the list // of supported architectures. static bool CheckBuiltinTargetSupport(Sema &S, unsigned BuiltinID, CallExpr *TheCall, ArrayRef SupportedArchs) { llvm::Triple::ArchType CurArch = S.getASTContext().getTargetInfo().getTriple().getArch(); if (llvm::is_contained(SupportedArchs, CurArch)) return false; S.Diag(TheCall->getLocStart(), diag::err_builtin_target_unsupported) << TheCall->getSourceRange(); return true; } d773 1 a773 1 if (SemaBuiltinVAStartARMMicrosoft(TheCall)) a782 27 // The acquire, release, and no fence variants are ARM and AArch64 only. case Builtin::BI_interlockedbittestandset_acq: case Builtin::BI_interlockedbittestandset_rel: case Builtin::BI_interlockedbittestandset_nf: case Builtin::BI_interlockedbittestandreset_acq: case Builtin::BI_interlockedbittestandreset_rel: case Builtin::BI_interlockedbittestandreset_nf: if (CheckBuiltinTargetSupport( *this, BuiltinID, TheCall, {llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; // The 64-bit bittest variants are x64, ARM, and AArch64 only. case Builtin::BI_bittest64: case Builtin::BI_bittestandcomplement64: case Builtin::BI_bittestandreset64: case Builtin::BI_bittestandset64: case Builtin::BI_interlockedbittestandreset64: case Builtin::BI_interlockedbittestandset64: if (CheckBuiltinTargetSupport(*this, BuiltinID, TheCall, {llvm::Triple::x86_64, llvm::Triple::arm, llvm::Triple::thumb, llvm::Triple::aarch64})) return ExprError(); break; a800 3 case Builtin::BI__builtin_signbit: case Builtin::BI__builtin_signbitf: case Builtin::BI__builtin_signbitl: d842 1 a961 4 case Builtin::BI__annotation: if (SemaBuiltinMSVCAnnotation(*this, TheCall)) return ExprError(); break; d977 7 a983 40 case Builtin::BI__builtin_operator_delete: { bool IsDelete = BuiltinID == Builtin::BI__builtin_operator_delete; ExprResult Res = SemaBuiltinOperatorNewDeleteOverloaded(TheCallResult, IsDelete); if (Res.isInvalid()) CorrectDelayedTyposInExpr(TheCallResult.get()); return Res; } case Builtin::BI__builtin_dump_struct: { // We first want to ensure we are called with 2 arguments if (checkArgCount(*this, TheCall, 2)) return ExprError(); // Ensure that the first argument is of type 'struct XX *' const Expr *PtrArg = TheCall->getArg(0)->IgnoreParenImpCasts(); const QualType PtrArgType = PtrArg->getType(); if (!PtrArgType->isPointerType() || !PtrArgType->getPointeeType()->isRecordType()) { Diag(PtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << PtrArgType << "structure pointer" << 1 << 0 << 3 << 1 << PtrArgType << "structure pointer"; return ExprError(); } // Ensure that the second argument is of type 'FunctionType' const Expr *FnPtrArg = TheCall->getArg(1)->IgnoreImpCasts(); const QualType FnPtrArgType = FnPtrArg->getType(); if (!FnPtrArgType->isPointerType()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } const auto *FuncType = FnPtrArgType->getPointeeType()->getAs(); if (!FuncType) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; d986 3 a988 20 if (const auto *FT = dyn_cast(FuncType)) { if (!FT->getNumParams()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } QualType PT = FT->getParamType(0); if (!FT->isVariadic() || FT->getReturnType() != Context.IntTy || !PT->isPointerType() || !PT->getPointeeType()->isCharType() || !PT->getPointeeType().isConstQualified()) { Diag(FnPtrArg->getLocStart(), diag::err_typecheck_convert_incompatible) << FnPtrArgType << "'int (*)(const char *, ...)'" << 1 << 0 << 3 << 2 << FnPtrArgType << "'int (*)(const char *, ...)'"; return ExprError(); } } TheCall->setType(Context.IntTy); a989 1 } a1050 3 if (SemaBuiltinReserveRWPipe(*this, TheCall)) return ExprError(); break; d1053 1 a1053 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinReserveRWPipe(*this, TheCall)) d1055 4 a1063 3 if (SemaBuiltinCommitRWPipe(*this, TheCall)) return ExprError(); break; d1066 1 a1066 2 if (checkOpenCLSubgroupExt(*this, TheCall) || SemaBuiltinCommitRWPipe(*this, TheCall)) a1090 5 case Builtin::BIget_kernel_max_sub_group_size_for_ndrange: case Builtin::BIget_kernel_sub_group_count_for_ndrange: if (SemaOpenCLBuiltinNDRangeAndBlock(*this, TheCall)) return ExprError(); break; d1093 1 a1093 1 if (SemaBuiltinOSLogFormat(TheCall)) d1095 1 a1114 4 case llvm::Triple::hexagon: if (CheckHexagonBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; a1223 1 #include "clang/Basic/arm_fp16.inc" d1273 3 a1275 4 #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #include "clang/Basic/arm_fp16.inc" #undef GET_NEON_IMMEDIATE_CHECK d1425 1 a1425 1 // FIXME: VFP Intrinsics should error if VFP not present. d1428 2 a1429 8 case ARM::BI__builtin_arm_ssat: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 32); case ARM::BI__builtin_arm_usat: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 31); case ARM::BI__builtin_arm_ssat16: return SemaBuiltinConstantArgRange(TheCall, 1, 1, 16); case ARM::BI__builtin_arm_usat16: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 15); d1431 1 a1431 2 case ARM::BI__builtin_arm_vcvtr_d: return SemaBuiltinConstantArgRange(TheCall, 1, 0, 1); d1435 1 a1435 2 case ARM::BI__builtin_arm_dbg: return SemaBuiltinConstantArgRange(TheCall, 0, 0, 15); d1437 3 a1483 1009 bool Sema::CheckHexagonBuiltinCpu(unsigned BuiltinID, CallExpr *TheCall) { static const std::map> ValidCPU = { { Hexagon::BI__builtin_HEXAGON_A6_vcmpbeq_notany, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_A6_vminub_RdP, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_M6_vabsdiffub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vsplatrbp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunehb_ppp, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_S6_vtrunohb_ppp, {"v62", "v65"} }, }; static const std::map> ValidHVX = { { Hexagon::BI__builtin_HEXAGON_V6_extractw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_extractw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_hi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lo_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplath_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_lvsplatw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_and_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_not_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_or_n_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_scalar2v2_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_pred_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_shuffeqw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsb_sat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsdiffw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vabsw_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddclbw_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubh_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddubsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduhw_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vadduwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaddwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vand_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandnqrt_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandqrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvnqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvqv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vandvrt_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vaslwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhubsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubrndsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruhubsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasruwuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrw_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhrndsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhrndsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vasrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassign_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vassignp_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgbrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavghrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgubrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguhrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavguwrnd_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vavgwrnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0h_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcl0w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vcombine_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vd0_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdd0_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealb4w_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdealvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpybus_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhb_dv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsuisat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhsusat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdmpyhvsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vdsaduh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_veqw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtb_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgth_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtub_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuh_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtuw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_and_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_or_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vgtw_xor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vinsertwr_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlsrwv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlut4_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvbi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvvb_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwhi_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_nm_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vlutvwh_oracci_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmaxw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vminw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuu_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpabuuv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpahhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhb_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpauhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpsuhuhsat_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyewuh_64_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyh_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsat_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhss_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyhvsrs_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyieoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiewuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyih_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyihb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyiwub_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_64_acc_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_rnd_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyowh_sacc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuh_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhe_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmpyuhv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vmux_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnavgw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnormamtw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vnot_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhb_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackhub_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpackwuh_sat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vpopcounth_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqb_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqh_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vprefixqw_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrdelta_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyub_rtt_acc_128B, {"v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubv_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vror_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundhub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduhub_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrounduwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vroundwuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsathub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatuwuh_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsatwh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshuffvdd_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoeh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vshufoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubb_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubbsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubcarry_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubh_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsububsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubububb_sat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuhw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubuwsat_dv_128B, {"v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubw_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vsubwsat_dv_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vswap_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpybus_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vtmpyhb_acc_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackob_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackoh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackub_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vunpackuh_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vxor_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzb_128B, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh, {"v60", "v62", "v65"} }, { Hexagon::BI__builtin_HEXAGON_V6_vzh_128B, {"v60", "v62", "v65"} }, }; const TargetInfo &TI = Context.getTargetInfo(); auto FC = ValidCPU.find(BuiltinID); if (FC != ValidCPU.end()) { const TargetOptions &Opts = TI.getTargetOpts(); StringRef CPU = Opts.CPU; if (!CPU.empty()) { assert(CPU.startswith("hexagon") && "Unexpected CPU name"); CPU.consume_front("hexagon"); if (llvm::none_of(FC->second, [CPU](StringRef S) { return S == CPU; })) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_cpu); } } auto FH = ValidHVX.find(BuiltinID); if (FH != ValidHVX.end()) { if (!TI.hasFeature("hvx")) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_requires_hvx); bool IsValid = llvm::any_of(FH->second, [&TI] (StringRef V) { std::string F = "hvx" + V.str(); return TI.hasFeature(F); }); if (!IsValid) return Diag(TheCall->getLocStart(), diag::err_hexagon_builtin_unsupported_hvx); } return false; } bool Sema::CheckHexagonBuiltinArgument(unsigned BuiltinID, CallExpr *TheCall) { struct ArgInfo { ArgInfo(unsigned O, bool S, unsigned W, unsigned A) : OpNum(O), IsSigned(S), BitWidth(W), Align(A) {} unsigned OpNum = 0; bool IsSigned = false; unsigned BitWidth = 0; unsigned Align = 0; }; static const std::map> Infos = { { Hexagon::BI__builtin_circ_ldd, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_ldw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_ldh, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_lduh, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_ldub, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_circ_std, {{ 3, true, 4, 3 }} }, { Hexagon::BI__builtin_circ_stw, {{ 3, true, 4, 2 }} }, { Hexagon::BI__builtin_circ_sth, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_sthhi, {{ 3, true, 4, 1 }} }, { Hexagon::BI__builtin_circ_stb, {{ 3, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrub_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadruh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_L2_loadrd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerb_pci, {{ 1, true, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerh_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerf_pci, {{ 1, true, 4, 1 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storeri_pci, {{ 1, true, 4, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_storerd_pci, {{ 1, true, 4, 3 }} }, { Hexagon::BI__builtin_HEXAGON_A2_combineii, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrih, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfril, {{ 1, false, 16, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A2_tfrpi, {{ 0, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_bitspliti, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_cround_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_round_ri_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbeqi, {{ 1, false, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpbgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpheqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmphgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpweqi, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgti, {{ 1, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_A4_vcmpwgtui, {{ 1, false, 7, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_bitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C2_muxii, {{ 2, true, 8, 0 }} }, { Hexagon::BI__builtin_HEXAGON_C4_nbitsclri, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_dfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfclass, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_n, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_F2_sfimm_p, {{ 0, false, 10, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addi, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_M4_mpyri_addr_u2, {{ 1, false, 6, 2 }} }, { Hexagon::BI__builtin_HEXAGON_S2_addasl_rrri, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_sat, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asl_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd_goodsyntax, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_p_rnd, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd_goodsyntax, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_r_rnd, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_svw_trun, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_asr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_clrbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractu, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_extractup, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insert, {{ 2, false, 5, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_insertp, {{ 2, false, 6, 0 }, { 3, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vh, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_lsr_i_vw, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_setbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxb_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxd_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxh_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tableidxw_goodsyntax, {{ 2, false, 4, 0 }, { 3, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_togglebit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_tstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_valignib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S2_vspliceib, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_addi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_andi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbaddi, {{ 1, true , 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_clbpaddi, {{ 1, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extract, {{ 1, false, 5, 0 }, { 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_extractp, {{ 1, false, 6, 0 }, { 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_lsli, {{ 0, true, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ntstbit_i, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_ori_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_asl_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_subi_lsr_ri, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate_acc, {{ 3, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S4_vrcrotate, {{ 2, false, 2, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_rnd_sat_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_asrhub_sat, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S5_vasrhrnd_goodsyntax, {{ 1, false, 4, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p, {{ 1, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_acc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_and, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_nac, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_or, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_p_xacc, {{ 2, false, 6, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r, {{ 1, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_acc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_and, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_nac, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_or, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_S6_rol_i_r_xacc, {{ 2, false, 5, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_valignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vlalignbi_128B, {{ 2, false, 3, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpybusi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrmpyubi_acc_128B, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_128B, {{ 2, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc, {{ 3, false, 1, 0 }} }, { Hexagon::BI__builtin_HEXAGON_V6_vrsadubi_acc_128B, {{ 3, false, 1, 0 }} }, }; auto F = Infos.find(BuiltinID); if (F == Infos.end()) return false; bool Error = false; for (const ArgInfo &A : F->second) { int32_t Min = A.IsSigned ? -(1 << (A.BitWidth-1)) : 0; int32_t Max = (1 << (A.IsSigned ? A.BitWidth-1 : A.BitWidth)) - 1; if (!A.Align) { Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max); } else { unsigned M = 1 << A.Align; Min *= M; Max *= M; Error |= SemaBuiltinConstantArgRange(TheCall, A.OpNum, Min, Max) | SemaBuiltinConstantArgMultiple(TheCall, A.OpNum, M); } } return Error; } bool Sema::CheckHexagonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { return CheckHexagonBuiltinCpu(BuiltinID, TheCall) || CheckHexagonBuiltinArgument(BuiltinID, TheCall); } d1532 1 a1532 1 // These intrinsics take an unsigned 5 bit immediate. a1792 20 /// SemaBuiltinCpuIs - Handle __builtin_cpu_is(char *). /// This checks that the target supports __builtin_cpu_is and /// that the string argument is constant and valid. static bool SemaBuiltinCpuIs(Sema &S, CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); // Check if the argument is a string literal. if (!isa(Arg->IgnoreParenImpCasts())) return S.Diag(TheCall->getLocStart(), diag::err_expr_not_string_literal) << Arg->getSourceRange(); // Check the contents of the string. StringRef Feature = cast(Arg->IgnoreParenImpCasts())->getString(); if (!S.Context.getTargetInfo().validateCpuIs(Feature)) return S.Diag(TheCall->getLocStart(), diag::err_invalid_cpu_is) << Arg->getSourceRange(); return false; } a1811 6 case X86::BI__builtin_ia32_maxpd512: case X86::BI__builtin_ia32_maxps512: case X86::BI__builtin_ia32_minpd512: case X86::BI__builtin_ia32_minps512: ArgNum = 2; break; d1841 2 d1845 2 a1884 2 case X86::BI__builtin_ia32_sqrtpd512: case X86::BI__builtin_ia32_sqrtps512: a1887 8 case X86::BI__builtin_ia32_addpd512: case X86::BI__builtin_ia32_addps512: case X86::BI__builtin_ia32_divpd512: case X86::BI__builtin_ia32_divps512: case X86::BI__builtin_ia32_mulpd512: case X86::BI__builtin_ia32_mulps512: case X86::BI__builtin_ia32_subpd512: case X86::BI__builtin_ia32_subps512: d1908 2 d1913 8 a1937 6 case X86::BI__builtin_ia32_vfmaddsd3_mask: case X86::BI__builtin_ia32_vfmaddsd3_maskz: case X86::BI__builtin_ia32_vfmaddsd3_mask3: case X86::BI__builtin_ia32_vfmaddss3_mask: case X86::BI__builtin_ia32_vfmaddss3_maskz: case X86::BI__builtin_ia32_vfmaddss3_mask3: d1939 1 a1940 2 case X86::BI__builtin_ia32_vfmaddpd512_mask3: case X86::BI__builtin_ia32_vfmsubpd512_mask3: d1942 1 a1943 2 case X86::BI__builtin_ia32_vfmaddps512_mask3: case X86::BI__builtin_ia32_vfmsubps512_mask3: d1945 1 a1946 2 case X86::BI__builtin_ia32_vfmaddsubpd512_mask3: case X86::BI__builtin_ia32_vfmsubaddpd512_mask3: d1948 1 d1950 3 a1952 1 case X86::BI__builtin_ia32_vfmaddsubps512_mask3: d1954 12 a2101 11 static bool isX86_32Builtin(unsigned BuiltinID) { // These builtins only work on x86-32 targets. switch (BuiltinID) { case X86::BI__builtin_ia32_readeflags_u32: case X86::BI__builtin_ia32_writeeflags_u32: return true; } return false; } a2105 9 if (BuiltinID == X86::BI__builtin_cpu_is) return SemaBuiltinCpuIs(*this, TheCall); // Check for 32-bit only builtins on a 64-bit target. const llvm::Triple &TT = Context.getTargetInfo().getTriple(); if (TT.getArch() != llvm::Triple::x86 && isX86_32Builtin(BuiltinID)) return Diag(TheCall->getCallee()->getLocStart(), diag::err_32_bit_builtin_64_bit_tgt); d2120 1 a2120 40 case X86::BI__builtin_ia32_vec_ext_v2si: case X86::BI__builtin_ia32_vec_ext_v2di: case X86::BI__builtin_ia32_vextractf128_pd256: case X86::BI__builtin_ia32_vextractf128_ps256: case X86::BI__builtin_ia32_vextractf128_si256: case X86::BI__builtin_ia32_extract128i256: case X86::BI__builtin_ia32_extractf64x4_mask: case X86::BI__builtin_ia32_extracti64x4_mask: case X86::BI__builtin_ia32_extractf32x8_mask: case X86::BI__builtin_ia32_extracti32x8_mask: case X86::BI__builtin_ia32_extractf64x2_256_mask: case X86::BI__builtin_ia32_extracti64x2_256_mask: case X86::BI__builtin_ia32_extractf32x4_256_mask: case X86::BI__builtin_ia32_extracti32x4_256_mask: i = 1; l = 0; u = 1; break; case X86::BI__builtin_ia32_vec_set_v2di: case X86::BI__builtin_ia32_vinsertf128_pd256: case X86::BI__builtin_ia32_vinsertf128_ps256: case X86::BI__builtin_ia32_vinsertf128_si256: case X86::BI__builtin_ia32_insert128i256: case X86::BI__builtin_ia32_insertf32x8: case X86::BI__builtin_ia32_inserti32x8: case X86::BI__builtin_ia32_insertf64x4: case X86::BI__builtin_ia32_inserti64x4: case X86::BI__builtin_ia32_insertf64x2_256: case X86::BI__builtin_ia32_inserti64x2_256: case X86::BI__builtin_ia32_insertf32x4_256: case X86::BI__builtin_ia32_inserti32x4_256: i = 2; l = 0; u = 1; break; case X86::BI__builtin_ia32_vpermilpd: case X86::BI__builtin_ia32_vec_ext_v4hi: case X86::BI__builtin_ia32_vec_ext_v4si: case X86::BI__builtin_ia32_vec_ext_v4sf: case X86::BI__builtin_ia32_vec_ext_v4di: case X86::BI__builtin_ia32_extractf32x4_mask: case X86::BI__builtin_ia32_extracti32x4_mask: case X86::BI__builtin_ia32_extractf64x2_512_mask: case X86::BI__builtin_ia32_extracti64x2_512_mask: a2122 5 case X86::BI_mm_prefetch: case X86::BI__builtin_ia32_vec_ext_v8hi: case X86::BI__builtin_ia32_vec_ext_v8si: i = 1; l = 0; u = 7; break; d2124 4 a2127 13 case X86::BI__builtin_ia32_blendpd: case X86::BI__builtin_ia32_shufpd: case X86::BI__builtin_ia32_vec_set_v4hi: case X86::BI__builtin_ia32_vec_set_v4si: case X86::BI__builtin_ia32_vec_set_v4di: case X86::BI__builtin_ia32_shuf_f32x4_256: case X86::BI__builtin_ia32_shuf_f64x2_256: case X86::BI__builtin_ia32_shuf_i32x4_256: case X86::BI__builtin_ia32_shuf_i64x2_256: case X86::BI__builtin_ia32_insertf64x2_512: case X86::BI__builtin_ia32_inserti64x2_512: case X86::BI__builtin_ia32_insertf32x4: case X86::BI__builtin_ia32_inserti32x4: a2167 2 case X86::BI__builtin_ia32_vec_set_v8hi: case X86::BI__builtin_ia32_vec_set_v8si: a2169 1 case X86::BI__builtin_ia32_vpermilpd256: a2173 8 case X86::BI__builtin_ia32_getmantpd128_mask: case X86::BI__builtin_ia32_getmantpd256_mask: case X86::BI__builtin_ia32_getmantps128_mask: case X86::BI__builtin_ia32_getmantps256_mask: case X86::BI__builtin_ia32_getmantpd512_mask: case X86::BI__builtin_ia32_getmantps512_mask: case X86::BI__builtin_ia32_vec_ext_v16qi: case X86::BI__builtin_ia32_vec_ext_v16hi: a2175 4 case X86::BI__builtin_ia32_pblendd128: case X86::BI__builtin_ia32_blendps: case X86::BI__builtin_ia32_blendpd256: case X86::BI__builtin_ia32_shufpd256: a2185 2 case X86::BI__builtin_ia32_vec_set_v16qi: case X86::BI__builtin_ia32_vec_set_v16hi: a2187 3 case X86::BI__builtin_ia32_vec_ext_v32qi: i = 1; l = 0; u = 31; break; a2201 1 case X86::BI__builtin_ia32_vec_set_v32qi: d2204 7 a2210 17 case X86::BI__builtin_ia32_permdf256: case X86::BI__builtin_ia32_permdi256: case X86::BI__builtin_ia32_permdf512: case X86::BI__builtin_ia32_permdi512: case X86::BI__builtin_ia32_vpermilps: case X86::BI__builtin_ia32_vpermilps256: case X86::BI__builtin_ia32_vpermilpd512: case X86::BI__builtin_ia32_vpermilps512: case X86::BI__builtin_ia32_pshufd: case X86::BI__builtin_ia32_pshufd256: case X86::BI__builtin_ia32_pshufd512: case X86::BI__builtin_ia32_pshufhw: case X86::BI__builtin_ia32_pshufhw256: case X86::BI__builtin_ia32_pshufhw512: case X86::BI__builtin_ia32_pshuflw: case X86::BI__builtin_ia32_pshuflw256: case X86::BI__builtin_ia32_pshuflw512: a2211 1 case X86::BI__builtin_ia32_vcvtps2ph_mask: a2212 2 case X86::BI__builtin_ia32_vcvtps2ph256_mask: case X86::BI__builtin_ia32_vcvtps2ph512_mask: d2225 10 a2234 12 case X86::BI__builtin_ia32_prold512: case X86::BI__builtin_ia32_prolq512: case X86::BI__builtin_ia32_prold128: case X86::BI__builtin_ia32_prold256: case X86::BI__builtin_ia32_prolq128: case X86::BI__builtin_ia32_prolq256: case X86::BI__builtin_ia32_prord512: case X86::BI__builtin_ia32_prorq512: case X86::BI__builtin_ia32_prord128: case X86::BI__builtin_ia32_prord256: case X86::BI__builtin_ia32_prorq128: case X86::BI__builtin_ia32_prorq256: a2242 6 case X86::BI__builtin_ia32_pslldqi128_byteshift: case X86::BI__builtin_ia32_pslldqi256_byteshift: case X86::BI__builtin_ia32_pslldqi512_byteshift: case X86::BI__builtin_ia32_psrldqi128_byteshift: case X86::BI__builtin_ia32_psrldqi256_byteshift: case X86::BI__builtin_ia32_psrldqi512_byteshift: d2245 15 d2264 2 a2265 4 case X86::BI__builtin_ia32_pblendw128: case X86::BI__builtin_ia32_pblendw256: case X86::BI__builtin_ia32_blendps256: case X86::BI__builtin_ia32_pblendd256: d2268 1 a2268 7 case X86::BI__builtin_ia32_palignr512: case X86::BI__builtin_ia32_alignq512: case X86::BI__builtin_ia32_alignd512: case X86::BI__builtin_ia32_alignd128: case X86::BI__builtin_ia32_alignd256: case X86::BI__builtin_ia32_alignq128: case X86::BI__builtin_ia32_alignq256: d2271 7 a2277 29 case X86::BI__builtin_ia32_shuf_f32x4: case X86::BI__builtin_ia32_shuf_f64x2: case X86::BI__builtin_ia32_shuf_i32x4: case X86::BI__builtin_ia32_shuf_i64x2: case X86::BI__builtin_ia32_shufpd512: case X86::BI__builtin_ia32_shufps: case X86::BI__builtin_ia32_shufps256: case X86::BI__builtin_ia32_shufps512: case X86::BI__builtin_ia32_dbpsadbw128: case X86::BI__builtin_ia32_dbpsadbw256: case X86::BI__builtin_ia32_dbpsadbw512: case X86::BI__builtin_ia32_vpshldd128: case X86::BI__builtin_ia32_vpshldd256: case X86::BI__builtin_ia32_vpshldd512: case X86::BI__builtin_ia32_vpshldq128: case X86::BI__builtin_ia32_vpshldq256: case X86::BI__builtin_ia32_vpshldq512: case X86::BI__builtin_ia32_vpshldw128: case X86::BI__builtin_ia32_vpshldw256: case X86::BI__builtin_ia32_vpshldw512: case X86::BI__builtin_ia32_vpshrdd128: case X86::BI__builtin_ia32_vpshrdd256: case X86::BI__builtin_ia32_vpshrdd512: case X86::BI__builtin_ia32_vpshrdq128: case X86::BI__builtin_ia32_vpshrdq256: case X86::BI__builtin_ia32_vpshrdq512: case X86::BI__builtin_ia32_vpshrdw128: case X86::BI__builtin_ia32_vpshrdw256: case X86::BI__builtin_ia32_vpshrdw512: d2320 9 d2334 1 a2334 6 // Note that we don't force a hard error on the range check here, allowing // template-generated or macro-generated dead code to potentially have out-of- // range values. These need to code generate, but don't need to necessarily // make any sense. We use a warning that defaults to an error. return SemaBuiltinConstantArgRange(TheCall, i, l, u, /*RangeIsError*/ false); d2362 1 a2362 1 /// Returns true if the value evaluates to null. d2405 1 a2405 2 /// Diagnose use of %s directive in an NSString which is being passed d2475 2 a2476 3 for (const ParamIdx &Idx : NonNull->args()) { unsigned IdxAST = Idx.getASTIndex(); if (IdxAST >= Args.size()) d2480 1 a2480 1 NonNullArgs.set(IdxAST); d2598 1 a2598 1 CheckArgumentWithTypeTag(I, Args, Loc); a2736 1 case AtomicExpr::AO__opencl_atomic_init: a2739 1 case AtomicExpr::AO__opencl_atomic_load: a2745 1 case AtomicExpr::AO__opencl_atomic_store: d2762 1 a2762 3 // All the non-OpenCL operations take one of the following forms. // The OpenCL operations take the __c11 forms with one extra argument for // synchronization scope. a2765 1 a2767 1 a2769 1 a2771 1 a2773 1 a2775 1 a2777 1 a2779 1 a2782 2 const unsigned NumForm = GNUCmpXchg + 1; a2791 3 static_assert(sizeof(NumArgs)/sizeof(NumArgs[0]) == NumForm && sizeof(NumVals)/sizeof(NumVals[0]) == NumForm, "need to update code for modified forms"); d2796 2 a2797 5 bool IsOpenCL = Op >= AtomicExpr::AO__opencl_atomic_init && Op <= AtomicExpr::AO__opencl_atomic_fetch_max; bool IsC11 = (Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor) || IsOpenCL; a2802 1 bool IsMinMax = false; a2805 1 case AtomicExpr::AO__opencl_atomic_init: a2809 1 case AtomicExpr::AO__opencl_atomic_load: a2818 1 case AtomicExpr::AO__opencl_atomic_store: a2825 4 case AtomicExpr::AO__opencl_atomic_fetch_add: case AtomicExpr::AO__opencl_atomic_fetch_sub: case AtomicExpr::AO__opencl_atomic_fetch_min: case AtomicExpr::AO__opencl_atomic_fetch_max: d2831 1 a2831 1 LLVM_FALLTHROUGH; a2834 3 case AtomicExpr::AO__opencl_atomic_fetch_and: case AtomicExpr::AO__opencl_atomic_fetch_or: case AtomicExpr::AO__opencl_atomic_fetch_xor: a2845 6 case AtomicExpr::AO__atomic_fetch_min: case AtomicExpr::AO__atomic_fetch_max: IsMinMax = true; Form = Arithmetic; break; a2846 1 case AtomicExpr::AO__opencl_atomic_exchange: a2856 2 case AtomicExpr::AO__opencl_atomic_compare_exchange_strong: case AtomicExpr::AO__opencl_atomic_compare_exchange_weak: a2865 3 unsigned AdjustedNumArgs = NumArgs[Form]; if (IsOpenCL && Op != AtomicExpr::AO__opencl_atomic_init) ++AdjustedNumArgs; d2867 1 a2867 1 if (TheCall->getNumArgs() < AdjustedNumArgs) { d2869 1 a2869 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2872 2 a2873 2 } else if (TheCall->getNumArgs() > AdjustedNumArgs) { Diag(TheCall->getArg(AdjustedNumArgs)->getLocStart(), d2875 1 a2875 1 << 0 << AdjustedNumArgs << TheCall->getNumArgs() d2903 1 a2903 2 if (AtomTy.isConstQualified() || AtomTy.getAddressSpace() == LangAS::opencl_constant) { d2905 1 a2905 2 << (AtomTy.isConstQualified() ? 0 : 1) << Ptr->getType() << Ptr->getSourceRange(); d2920 1 a2920 2 if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { d2925 1 a2925 9 if (IsMinMax) { const BuiltinType *BT = ValType->getAs(); if (!BT || (BT->getKind() != BuiltinType::Int && BT->getKind() != BuiltinType::UInt)) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_int32_or_ptr); return ExprError(); } } if (!IsAddSub && !IsMinMax && !ValType->isIntegerType()) { d2968 3 a2970 4 // All atomic operations have an overload which takes a pointer to a volatile // 'A'. We shouldn't let the volatile-ness of the pointee-type inject itself // into the result or the other operands. Similarly atomic_load takes a // pointer to a const 'A'. d2974 1 a2974 2 if (Form == Copy || Form == LoadCopy || Form == GNUXchg || Form == Init) d2982 1 a2982 2 bool IsPassedByAddress = false; if (!IsC11 && !IsN) { a2983 2 IsPassedByAddress = true; } d2985 4 a2988 6 // The first argument's non-CV pointer type is used to deduce the type of // subsequent arguments, except for: // - weak flag (always converted to bool) // - memory order (always converted to int) // - scope (always converted to int) for (unsigned i = 0; i != TheCall->getNumArgs(); ++i) { a2991 6 case 0: // The first argument is always a pointer. It has a fixed type. // It is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); // Nothing else to do: we already know all we want about this pointer. continue; d3000 1 a3000 4 else if (Form == Copy || Form == Xchg) { if (IsPassedByAddress) // The value pointer is always dereferenced, a nullptr is undefined. CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3002 1 a3002 1 } else if (Form == Arithmetic) d3006 2 a3007 1 // The value pointer is always dereferenced, a nullptr is undefined. d3009 1 a3009 1 LangAS AS = LangAS::Default; d3020 2 a3021 4 // The third argument to compare_exchange / GNU exchange is the desired // value, either by-value (for the C11 and *_n variant) or as a pointer. if (IsPassedByAddress) CheckNonNullArgument(*this, TheCall->getArg(i), DRE->getLocStart()); d3030 1 a3030 1 // The order(s) and scope are always converted to int. a3090 11 if (auto ScopeModel = AtomicExpr::getScopeModel(Op)) { auto *Scope = TheCall->getArg(TheCall->getNumArgs() - 1); llvm::APSInt Result(32); if (Scope->isIntegerConstantExpr(Result, Context) && !ScopeModel->isValid(Result.getZExtValue())) { Diag(Scope->getLocStart(), diag::err_atomic_op_has_invalid_synch_scope) << Scope->getSourceRange(); } SubExprs.push_back(Scope); } d3096 1 a3096 3 Op == AtomicExpr::AO__c11_atomic_store || Op == AtomicExpr::AO__opencl_atomic_load || Op == AtomicExpr::AO__opencl_atomic_store ) && d3098 2 a3099 4 Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load || Op == AtomicExpr::AO__opencl_atomic_load) ? 0 : 1); a3176 6 if (ValType.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_cannot_be_const) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } d3382 1 a3382 1 case Builtin::BI__sync_lock_test_and_set: d3634 1 a3634 1 CallingConv CC = CC_C; d3781 1 a3781 1 bool Sema::SemaBuiltinVAStartARMMicrosoft(CallExpr *Call) { d3800 7 a3806 1 // __va_start on Windows does not validate the parameter qualifiers d3808 9 a3816 25 const Expr *Arg1 = Call->getArg(1)->IgnoreParens(); const Type *Arg1Ty = Arg1->getType().getCanonicalType().getTypePtr(); const Expr *Arg2 = Call->getArg(2)->IgnoreParens(); const Type *Arg2Ty = Arg2->getType().getCanonicalType().getTypePtr(); const QualType &ConstCharPtrTy = Context.getPointerType(Context.CharTy.withConst()); if (!Arg1Ty->isPointerType() || Arg1Ty->getPointeeType().withoutLocalFastQualifiers() != Context.CharTy) Diag(Arg1->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg1->getType() << ConstCharPtrTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 2 << Arg1->getType() << ConstCharPtrTy; const QualType SizeTy = Context.getSizeType(); if (Arg2Ty->getCanonicalTypeInternal().withoutLocalFastQualifiers() != SizeTy) Diag(Arg2->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg2->getType() << SizeTy << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << 3 << Arg2->getType() << SizeTy; d3889 1 a3889 2 // If this is an implicit conversion from float -> float, double, or // long double, remove it. d3895 3 a3897 6 assert( (Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) || Cast->getType()->isSpecificBuiltinType(BuiltinType::Float) || Cast->getType()->isSpecificBuiltinType(BuiltinType::LongDouble)) && "promotion from float to either float, double, or long double is " "the only expected cast here"); d4146 1 a4146 1 if (Result > std::numeric_limits::max()) d4148 1 a4148 1 << std::numeric_limits::max() d4293 1 a4293 1 int Low, int High, bool RangeIsError) { d4305 3 a4307 12 if (Result.getSExtValue() < Low || Result.getSExtValue() > High) { if (RangeIsError) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange(); else // Defer the warning until we know if the code will be emitted so that // dead code can ignore this. DiagRuntimeBehavior(TheCall->getLocStart(), TheCall, PDiag(diag::warn_argument_invalid_range) << Result.toString(10) << Low << High << Arg->getSourceRange()); } d4413 1 a4466 1 d4469 1 a4469 2 signed FirstUncoveredArg = Unknown; d4473 1 a4473 1 UncoveredArgHandler() = default; d4517 1 a4517 2 } // namespace d4550 1 a4550 2 assert(BitWidth <= std::numeric_limits::max() / 2 && "index (intermediate) result too big"); a4559 1 a4577 1 a4602 1 d4605 1 a4605 2 } // namespace d4692 1 a4692 1 case Stmt::ImplicitCastExprClass: d4695 1 d4786 12 a4797 16 bool IsFirst = true; StringLiteralCheckType CommonResult; for (const auto *FA : ND->specific_attrs()) { const Expr *Arg = CE->getArg(FA->getFormatIdx().getASTIndex()); StringLiteralCheckType Result = checkFormatStringExpr( S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs, UncoveredArg, Offset); if (IsFirst) { CommonResult = Result; IsFirst = false; } } if (!IsFirst) return CommonResult; if (const auto *FD = dyn_cast(ND)) { d4817 2 a4818 1 const Expr *Arg = ME->getArg(FA->getFormatIdx().getASTIndex()); d4884 1 a4884 1 if (UnaOp->getOpcode() == UO_AddrOf && ASE) { a5016 1 d5030 2 a5031 2 bool usesPositionalArgs = false; bool atFirstArg = true; d5049 1 d5119 1 a5119 2 } // namespace d5421 1 a5421 1 /// If the format string is not within the function call, emit a note a5472 1 d5537 1 a5537 2 } // namespace d5655 4 d5725 1 a5725 2 using MethodSet = llvm::SmallPtrSet; d5740 1 a5740 1 using MethodSet = llvm::SmallPtrSet; d5768 1 a5768 2 using namespace analyze_printf; d6012 3 a6014 3 .Case("CFIndex", Context.getNSIntegerType()) .Case("NSInteger", Context.getNSIntegerType()) .Case("NSUInteger", Context.getNSUIntegerType()) a6065 1 d6077 3 a6079 4 const analyze_printf::ArgType::MatchKind Match = AT.matchesType(S.Context, ExprTy); bool Pedantic = Match == analyze_printf::ArgType::NoMatchPedantic; if (Match == analyze_printf::ArgType::Match) d6081 1 a6156 6 // %zi/%zu and %td/%tu are OK to use for NSInteger/NSUInteger of type int // (long in ASTContext). Only complain to pedants. if ((CastTyName == "NSInteger" || CastTyName == "NSUInteger") && (AT.isSizeT() || AT.isPtrdiffT()) && AT.matchesType(S.Context, CastTy)) Pedantic = true; d6164 1 a6164 1 bool Success = d6167 1 a6167 1 if (Success) { d6176 4 a6179 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6182 1 a6182 1 EmitFormatDiagnostic(S.PDiag(Diag) d6203 1 a6203 1 if (!AT.matchesType(S.Context, IntendedTy) || ShouldNotPrintDirectly) d6235 3 a6237 5 unsigned Diag = Pedantic ? diag::warn_format_argument_needs_cast_pedantic : diag::warn_format_argument_needs_cast; EmitFormatDiagnostic(S.PDiag(Diag) << Name << IntendedTy << IsEnum << E->getSourceRange(), d6261 4 a6264 4 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6267 1 a6267 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) << ExprTy a6317 1 d6344 1 a6344 2 } // namespace d6357 1 d6449 1 a6449 1 analyze_format_string::ArgType::MatchKind Match = d6451 1 a6451 2 bool Pedantic = Match == analyze_format_string::ArgType::NoMatchPedantic; if (Match == analyze_format_string::ArgType::Match) d6453 1 d6456 1 a6456 1 bool Success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), d6459 4 a6462 3 unsigned Diag = Pedantic ? diag::warn_format_conversion_argument_type_mismatch_pedantic : diag::warn_format_conversion_argument_type_mismatch; d6464 1 a6464 1 if (Success) { d6471 1 a6471 1 S.PDiag(Diag) << AT.getRepresentativeTypeName(S.Context) d6479 1 a6479 1 EmitFormatDiagnostic(S.PDiag(Diag) d7032 1 a7032 1 /// Takes the expression passed to the size_t parameter of functions d7044 2 a7045 2 // if E is binop and op is <=>, >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isLogicalOp()) d7063 1 a7063 1 /// Determine whether the given type is or contains a dynamic class type d7094 1 a7094 1 /// If E is a sizeof expression, returns its argument expression, d7099 1 a7099 1 if (SizeOf->getKind() == UETT_SizeOf && !SizeOf->isArgumentType()) d7105 1 a7105 1 /// If E is a sizeof expression, returns its argument type. d7109 1 a7109 1 if (SizeOf->getKind() == UETT_SizeOf) d7115 1 a7115 93 namespace { struct SearchNonTrivialToInitializeField : DefaultInitializedTypeVisitor { using Super = DefaultInitializedTypeVisitor; SearchNonTrivialToInitializeField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveDefaultInitializeKind PDIK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PDIK, AT, SL); return; } Super::visitWithKind(PDIK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 1); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveDefaultInitializeKind PDIK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void visitTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToInitializeField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; struct SearchNonTrivialToCopyField : CopiedTypeVisitor { using Super = CopiedTypeVisitor; SearchNonTrivialToCopyField(const Expr *E, Sema &S) : E(E), S(S) {} void visitWithKind(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) { if (const auto *AT = asDerived().getContext().getAsArrayType(FT)) { asDerived().visitArray(PCK, AT, SL); return; } Super::visitWithKind(PCK, FT, SL); } void visitARCStrong(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitARCWeak(QualType FT, SourceLocation SL) { S.DiagRuntimeBehavior(SL, E, S.PDiag(diag::note_nontrivial_field) << 0); } void visitStruct(QualType FT, SourceLocation SL) { for (const FieldDecl *FD : FT->castAs()->getDecl()->fields()) visit(FD->getType(), FD->getLocation()); } void visitArray(QualType::PrimitiveCopyKind PCK, const ArrayType *AT, SourceLocation SL) { visit(getContext().getBaseElementType(AT), SL); } void preVisit(QualType::PrimitiveCopyKind PCK, QualType FT, SourceLocation SL) {} void visitTrivial(QualType FT, SourceLocation SL) {} void visitVolatileTrivial(QualType FT, SourceLocation SL) {} static void diag(QualType RT, const Expr *E, Sema &S) { SearchNonTrivialToCopyField(E, S).visitStruct(RT, SourceLocation()); } ASTContext &getContext() { return S.getASTContext(); } const Expr *E; Sema &S; }; } /// Check for dangerous or invalid arguments to memset(). d7280 1 a7280 17 else if (const auto *RT = PointeeTy->getAs()) { if ((BId == Builtin::BImemset || BId == Builtin::BIbzero) && RT->getDecl()->isNonTrivialToPrimitiveDefaultInitialize()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 0); SearchNonTrivialToInitializeField::diag(PointeeTy, Dest, *this); } else if ((BId == Builtin::BImemcpy || BId == Builtin::BImemmove) && RT->getDecl()->isNonTrivialToPrimitiveCopy()) { DiagRuntimeBehavior(Dest->getExprLoc(), Dest, PDiag(diag::warn_cstruct_memaccess) << ArgIdx << FnName << PointeeTy << 1); SearchNonTrivialToCopyField::diag(PointeeTy, Dest, *this); } else { continue; } } else d7297 1 a7297 1 while (true) { d7515 1 d7934 1 a7934 1 if (!Proto->isNothrow(/*ResultIfDependent*/true) && d8000 2 a8001 1 : Width(Width), NonNegative(NonNegative) {} d8025 2 a8026 6 if (!C.getLangOpts().CPlusPlus) { // For enum types in C code, use the underlying datatype. if (const EnumType *ET = dyn_cast(T)) T = ET->getDecl()->getIntegerType().getDesugaredType(C).getTypePtr(); } else if (const EnumType *ET = dyn_cast(T)) { // For enum types in C++, use the known bit width of the enumerators. d8028 2 a8029 6 // In C++11, enums can have a fixed underlying type. Use this type to // compute the range. if (Enum->isFixed()) { return IntRange(C.getIntWidth(QualType(T, 0)), !ET->isSignedIntegerOrEnumerationType()); } d8083 1 a8083 4 } // namespace static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { d8095 2 a8096 2 static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { d8124 1 a8124 1 static QualType GetExprType(const Expr *E) { d8135 1 a8135 1 static IntRange GetExprRange(ASTContext &C, const Expr *E, unsigned MaxWidth) { a8188 2 case BO_Cmp: llvm_unreachable("builtin <=> should have class type"); d8241 1 a8241 1 LLVM_FALLTHROUGH; d8353 1 a8353 1 static IntRange GetExprRange(ASTContext &C, const Expr *E) { d8360 3 a8362 3 static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8377 3 a8379 3 static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { d8395 1 a8395 1 static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); d8397 1 a8397 1 static bool IsEnumConstOrFromMacro(Sema &S, Expr *E) { d8402 1 a8402 1 return true; d8406 1 a8406 1 return true; d8408 2 a8409 132 return false; } static bool isKnownToHaveUnsignedValue(Expr *E) { return E->getType()->isIntegerType() && (!E->getType()->isSignedIntegerType() || !E->IgnoreParenImpCasts()->getType()->isSignedIntegerType()); } namespace { /// The promoted range of values of a type. In general this has the /// following structure: /// /// |-----------| . . . |-----------| /// ^ ^ ^ ^ /// Min HoleMin HoleMax Max /// /// ... where there is only a hole if a signed type is promoted to unsigned /// (in which case Min and Max are the smallest and largest representable /// values). struct PromotedRange { // Min, or HoleMax if there is a hole. llvm::APSInt PromotedMin; // Max, or HoleMin if there is a hole. llvm::APSInt PromotedMax; PromotedRange(IntRange R, unsigned BitWidth, bool Unsigned) { if (R.Width == 0) PromotedMin = PromotedMax = llvm::APSInt(BitWidth, Unsigned); else if (R.Width >= BitWidth && !Unsigned) { // Promotion made the type *narrower*. This happens when promoting // a < 32-bit unsigned / <= 32-bit signed bit-field to 'signed int'. // Treat all values of 'signed int' as being in range for now. PromotedMin = llvm::APSInt::getMinValue(BitWidth, Unsigned); PromotedMax = llvm::APSInt::getMaxValue(BitWidth, Unsigned); } else { PromotedMin = llvm::APSInt::getMinValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMin.setIsUnsigned(Unsigned); PromotedMax = llvm::APSInt::getMaxValue(R.Width, R.NonNegative) .extOrTrunc(BitWidth); PromotedMax.setIsUnsigned(Unsigned); } } // Determine whether this range is contiguous (has no hole). bool isContiguous() const { return PromotedMin <= PromotedMax; } // Where a constant value is within the range. enum ComparisonResult { LT = 0x1, LE = 0x2, GT = 0x4, GE = 0x8, EQ = 0x10, NE = 0x20, InRangeFlag = 0x40, Less = LE | LT | NE, Min = LE | InRangeFlag, InRange = InRangeFlag, Max = GE | InRangeFlag, Greater = GE | GT | NE, OnlyValue = LE | GE | EQ | InRangeFlag, InHole = NE }; ComparisonResult compare(const llvm::APSInt &Value) const { assert(Value.getBitWidth() == PromotedMin.getBitWidth() && Value.isUnsigned() == PromotedMin.isUnsigned()); if (!isContiguous()) { assert(Value.isUnsigned() && "discontiguous range for signed compare"); if (Value.isMinValue()) return Min; if (Value.isMaxValue()) return Max; if (Value >= PromotedMin) return InRange; if (Value <= PromotedMax) return InRange; return InHole; } switch (llvm::APSInt::compareValues(Value, PromotedMin)) { case -1: return Less; case 0: return PromotedMin == PromotedMax ? OnlyValue : Min; case 1: switch (llvm::APSInt::compareValues(Value, PromotedMax)) { case -1: return InRange; case 0: return Max; case 1: return Greater; } } llvm_unreachable("impossible compare result"); } static llvm::Optional constantValue(BinaryOperatorKind Op, ComparisonResult R, bool ConstantOnRHS) { if (Op == BO_Cmp) { ComparisonResult LTFlag = LT, GTFlag = GT; if (ConstantOnRHS) std::swap(LTFlag, GTFlag); if (R & EQ) return StringRef("'std::strong_ordering::equal'"); if (R & LTFlag) return StringRef("'std::strong_ordering::less'"); if (R & GTFlag) return StringRef("'std::strong_ordering::greater'"); return llvm::None; } ComparisonResult TrueFlag, FalseFlag; if (Op == BO_EQ) { TrueFlag = EQ; FalseFlag = NE; } else if (Op == BO_NE) { TrueFlag = NE; FalseFlag = EQ; } else { if ((Op == BO_LT || Op == BO_GE) ^ ConstantOnRHS) { TrueFlag = LT; FalseFlag = GE; } else { TrueFlag = GT; FalseFlag = LE; } if (Op == BO_GE || Op == BO_LE) std::swap(TrueFlag, FalseFlag); } if (R & TrueFlag) return StringRef("true"); if (R & FalseFlag) return StringRef("false"); return llvm::None; } }; d8412 1 a8412 1 static bool HasEnumType(Expr *E) { d8424 2 a8425 18 static int classifyConstantValue(Expr *Constant) { // The values of this enumeration are used in the diagnostics // diag::warn_out_of_range_compare and diag::warn_tautological_bool_compare. enum ConstantValueKind { Miscellaneous = 0, LiteralTrue, LiteralFalse }; if (auto *BL = dyn_cast(Constant)) return BL->getValue() ? ConstantValueKind::LiteralTrue : ConstantValueKind::LiteralFalse; return ConstantValueKind::Miscellaneous; } static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, const llvm::APSInt &Value, bool RhsConstant) { d8427 1 a8427 1 return false; d8429 3 a8431 1 Expr *OriginalOther = Other; d8433 18 a8450 2 Constant = Constant->IgnoreParenImpCasts(); Other = Other->IgnoreParenImpCasts(); d8452 6 a8457 10 // Suppress warnings on tautological comparisons between values of the same // enumeration type. There are only two ways we could warn on this: // - If the constant is outside the range of representable values of // the enumeration. In such a case, we should warn about the cast // to enumeration type, not about the comparison. // - If the constant is the maximum / minimum in-range value. For an // enumeratin type, such comparisons can be meaningful and useful. if (Constant->getType()->isEnumeralType() && S.Context.hasSameUnqualifiedType(Constant->getType(), Other->getType())) return false; d8465 138 d8604 25 a8628 15 // Whether we're treating Other as being a bool because of the form of // expression despite it having another type (typically 'int' in C). bool OtherIsBooleanDespiteType = !OtherT->isBooleanType() && Other->isKnownToHaveBooleanValue(); if (OtherIsBooleanDespiteType) OtherRange = IntRange::forBoolType(); // Determine the promoted range of the other type and see if a comparison of // the constant against that range is tautological. PromotedRange OtherPromotedRange(OtherRange, Value.getBitWidth(), Value.isUnsigned()); auto Cmp = OtherPromotedRange.compare(Value); auto Result = PromotedRange::constantValue(E->getOpcode(), Cmp, RhsConstant); if (!Result) return false; d8630 8 a8637 9 // Suppress the diagnostic for an in-range comparison if the constant comes // from a macro or enumerator. We don't want to diagnose // // some_long_value <= INT_MAX // // when sizeof(int) == sizeof(long). bool InRange = Cmp & PromotedRange::InRangeFlag; if (InRange && IsEnumConstOrFromMacro(S, Constant)) return false; a8644 1 // Should be enough for uint128 (39 decimal digits) d8652 6 a8657 24 // FIXME: We use a somewhat different formatting for the in-range cases and // cases involving boolean values for historical reasons. We should pick a // consistent way of presenting these diagnostics. if (!InRange || Other->isKnownToHaveBooleanValue()) { S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(!InRange ? diag::warn_out_of_range_compare : diag::warn_tautological_bool_compare) << OS.str() << classifyConstantValue(Constant) << OtherT << OtherIsBooleanDespiteType << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); } else { unsigned Diag = (isKnownToHaveUnsignedValue(OriginalOther) && Value == 0) ? (HasEnumType(OriginalOther) ? diag::warn_unsigned_enum_always_true_comparison : diag::warn_unsigned_always_true_comparison) : diag::warn_tautological_constant_compare; S.Diag(E->getOperatorLoc(), Diag) << RhsConstant << OtherT << E->getOpcodeStr() << OS.str() << *Result << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } return true; d8662 1 a8662 1 static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { d8667 1 a8667 1 /// Implements -Wsign-compare. d8670 1 a8670 1 static void AnalyzeComparison(Sema &S, BinaryOperator *E) { d8683 7 a8689 3 Expr *LHS = E->getLHS(); Expr *RHS = E->getRHS(); d8692 2 d8695 19 a8713 27 bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); // We don't care about expressions whose result is a constant. if (IsRHSIntegralLiteral && IsLHSIntegralLiteral) return AnalyzeImpConvsInComparison(S, E); // We only care about expressions where just one side is literal if (IsRHSIntegralLiteral ^ IsLHSIntegralLiteral) { // Is the constant on the RHS or LHS? const bool RhsConstant = IsRHSIntegralLiteral; Expr *Const = RhsConstant ? RHS : LHS; Expr *Other = RhsConstant ? LHS : RHS; const llvm::APSInt &Value = RhsConstant ? RHSValue : LHSValue; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (CheckTautologicalComparison(S, E, Const, Other, Value, RhsConstant)) return AnalyzeImpConvsInComparison(S, E); } } if (!T->hasUnsignedIntegerRepresentation()) { // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. d8715 1 a8715 15 } LHS = LHS->IgnoreParenImpCasts(); RHS = RHS->IgnoreParenImpCasts(); if (!S.getLangOpts().CPlusPlus) { // Avoid warning about comparison of integers with different signs when // RHS/LHS has a `typeof(E)` type whose sign is different from the sign of // the type of `E`. if (const auto *TET = dyn_cast(LHS->getType())) LHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); if (const auto *TET = dyn_cast(RHS->getType())) RHS = TET->getUnderlyingExpr()->IgnoreParenImpCasts(); } d8728 1 d8740 3 a8742 1 // If the signed range is non-negative, -Wsign-compare won't fire. d8744 1 a8744 1 return; d8771 2 a8772 2 static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { d8902 1 a8902 1 static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { d8921 3 a8923 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { d8936 2 a8937 3 static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { a8940 8 /// Analyze the given compound assignment for the possible losing of /// floating-point precision. static void AnalyzeCompoundAssignment(Sema &S, BinaryOperator *E) { assert(isa(E) && "Must be compound assignment operation"); // Recurse on the LHS and RHS in here AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); d8942 2 a8943 17 // Now check the outermost expression const auto *ResultBT = E->getLHS()->getType()->getAs(); const auto *RBT = cast(E) ->getComputationResultType() ->getAs(); // If both source and target are floating points. if (ResultBT && ResultBT->isFloatingPoint() && RBT && RBT->isFloatingPoint()) // Builtin FP kinds are ordered by increasing FP rank. if (ResultBT->getKind() < RBT->getKind()) // We don't want to warn for system macro. if (!S.SourceMgr.isInSystemMacro(E->getOperatorLoc())) // warn about dropping FP rank. DiagnoseImpCast(S, E->getRHS(), E->getLHS()->getType(), E->getOperatorLoc(), diag::warn_impcast_float_result_precision); } d8945 1 a8945 3 /// Diagnose an implicit cast from a floating point value to an integer value. static void DiagnoseFloatingImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext) { d8970 3 a8972 4 llvm::APFloat::opStatus Result = Value.convertToInteger( IntegerValue, llvm::APFloat::rmTowardZero, &isExact); if (Result == llvm::APFloat::opOK && isExact) { a8977 9 // Conversion of a floating-point value to a non-bool integer where the // integral part cannot be represented by the integer type is undefined. if (!IsBool && Result == llvm::APFloat::opInvalidOp) return DiagnoseImpCast( S, E, T, CContext, IsLiteral ? diag::warn_impcast_literal_float_to_integer_out_of_range : diag::warn_impcast_float_to_integer_out_of_range, PruneWarnings); d9035 1 a9035 2 static std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { d9044 1 a9044 1 static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { d9063 2 a9064 2 static void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { d9084 1 a9084 2 static void DiagnoseNullConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9109 5 a9113 2 Loc = S.SourceMgr.getTopMacroCallerLoc(Loc); CC = S.SourceMgr.getTopMacroCallerLoc(CC); d9120 1 a9120 1 Loc = S.SourceMgr.getImmediateExpansionRange(Loc).getBegin(); d9128 1 a9128 1 << (NullKind == Expr::NPCK_CXX11_nullptr) << T << SourceRange(CC) d9133 4 a9136 6 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral); static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral); d9140 2 a9141 4 static void checkObjCCollectionLiteralElement(Sema &S, QualType TargetElementType, Expr *Element, unsigned ElementKind) { d9170 2 a9171 2 static void checkObjCArrayLiteral(Sema &S, QualType TargetType, ObjCArrayLiteral *ArrayLiteral) { d9198 2 a9199 3 static void checkObjCDictionaryLiteral(Sema &S, QualType TargetType, ObjCDictionaryLiteral *DictionaryLiteral) { d9227 2 a9228 2 static bool isSameWidthConstantConversion(Sema &S, Expr *E, QualType T, SourceLocation CC) { d9251 2 a9252 3 static void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = nullptr) { d9304 1 a9304 1 d9319 1 a9319 1 if (S.SourceMgr.isInSystemMacro(CC) || Target->isBooleanType()) d9322 1 a9322 4 return DiagnoseImpCast(S, E, T, CC, S.getLangOpts().CPlusPlus ? diag::err_impcast_complex_scalar : diag::warn_impcast_complex_scalar); d9517 2 a9518 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); d9520 2 a9521 2 static void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { d9532 2 a9533 2 static void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { d9562 1 a9562 1 static void CheckBoolLikeConversion(Sema &S, Expr *E, SourceLocation CC) { d9571 1 a9571 2 static void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { d9577 1 a9577 1 a9620 3 // And with compound assignments. if (BO->isAssignmentOp()) return AnalyzeCompoundAssignment(S, BO); d9664 3 a9666 1 /// Diagnose integer type and any valid implicit conversion to it. d9729 1 a9729 1 /// Diagnose pointers that are always non-null. d9833 2 a9834 2 for (const ParamIdx &ArgNo : NonNull->args()) { if (ArgNo.getASTIndex() == ParamNo) { d9955 1 a9955 2 Expr *OriginalE = Exprs.pop_back_val(); Expr *E = OriginalE->IgnoreParenCasts(); d9957 2 a9958 2 if (isa(E)) { E->EvaluateForOverflow(Context); d9962 1 a9962 1 if (auto InitList = dyn_cast(OriginalE)) d9964 3 a9966 6 else if (isa(OriginalE)) E->EvaluateForOverflow(Context); else if (auto Call = dyn_cast(E)) Exprs.append(Call->arg_begin(), Call->arg_end()); else if (auto Message = dyn_cast(E)) Exprs.append(Message->arg_begin(), Message->arg_end()); d9971 1 a9971 2 /// Visitor for expressions which looks for unsequenced operations on the d9974 1 a9974 1 using Base = EvaluatedExprVisitor; d9976 1 a9976 1 /// A tree of sequenced regions within an expression. Two regions are d9990 1 a9990 1 /// A region within an expression which may be sequenced with respect d9993 2 a9995 5 unsigned Index = 0; explicit Seq(unsigned N) : Index(N) {} d9997 1 a9997 1 Seq() = default; d10003 1 a10003 1 /// Create a new sequence of operations, which is an unsequenced d10011 1 a10011 1 /// Merge a sequence of operations into its parent. d10016 1 a10016 1 /// Determine whether two operations are unsequenced. This operation d10031 1 a10031 1 /// Pick a representative for a sequence. d10041 1 a10041 1 using Object = NamedDecl *; a10047 1 a10050 1 d10059 2 a10060 1 Expr *Use = nullptr; a10061 2 Usage() = default; d10065 1 a10066 1 d10068 1 a10068 3 bool Diagnosed = false; UsageInfo() = default; d10070 1 a10070 1 using UsageInfoMap = llvm::SmallDenseMap; a10072 1 a10074 1 a10076 1 a10078 1 d10081 1 a10081 2 SmallVectorImpl> *ModAsSideEffect = nullptr; a10095 1 d10108 1 a10108 1 SmallVectorImpl> *OldModAsSideEffect; d10118 1 a10118 1 : Self(Self), Prev(Self.EvalTracker) { a10120 1 d10137 2 a10138 2 bool EvalOK = true; } *EvalTracker = nullptr; d10140 1 a10140 1 /// Find the object which is produced by the specified expression, d10162 1 a10162 1 /// Note that an object was modified or used by an expression. d10172 1 a10172 2 /// Check whether a modification or use conflicts with a prior usage. a10198 1 a10210 1 d10219 2 a10220 1 : Base(S.Context), SemaRef(S), Region(Tree.root()), WorkList(WorkList) { d10454 1 a10454 2 } // namespace d10549 17 a10565 12 // If the parameter is a c++ class type and it has to be destructed in the // callee function, declare the destructor so that it can be called by the // callee function. Do not perform any direct access check on the dtor here. if (!Param->isInvalidDecl()) { if (CXXRecordDecl *ClassDecl = Param->getType()->getAsCXXRecordDecl()) { if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext() && ClassDecl->isParamDestroyedInCallee()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); d10648 1 a10648 1 /// Check whether this array fits the idiom of a size-one tail padded d10718 1 a10718 1 ND = DRE->getDecl(); d10720 1 a10720 1 ND = ME->getMemberDecl(); d10803 1 a10803 1 ND = DRE->getDecl(); d10805 1 a10805 1 ND = ME->getMemberDecl(); d10823 1 a10823 6 expr = ASE->getBase(); break; } case Stmt::MemberExprClass: { expr = cast(expr)->getBase(); break; d10871 13 a10883 16 struct RetainCycleOwner { VarDecl *Variable = nullptr; SourceRange Range; SourceLocation Loc; bool Indirect = false; RetainCycleOwner() = default; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } // namespace a10979 1 d10981 4 d10987 2 a10988 6 Expr *Capturer = nullptr; bool VarWillBeReased = false; FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Context(Context), Variable(variable) {} a11012 1 d11029 1 a11029 2 } // namespace d11227 1 a11227 1 << ArgRE->getDecl() << StringRef("'super'"); d11243 1 a11243 1 << Decl << Decl; d11247 1 a11247 1 << Decl; d11257 1 a11257 1 << Decl << Decl; d11260 1 a11260 1 << Decl; d11286 2 a11287 6 const ObjCMethodDecl *MD = msg->getMethodDecl(); for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) { if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) { // noescape blocks should not be retained by the method. if (MD && MD->parameters()[i]->hasAttr()) continue; a11288 2 } } d11436 4 a11439 3 static bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { d11445 1 d11468 1 d11580 3 a11582 1 if (!CE->isCallToStdMove()) d11650 3 a11652 1 static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); d11654 2 a11655 2 /// Check if two enumeration types are layout-compatible. static bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { d11663 2 a11664 3 /// Check if two fields are layout-compatible. static bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { d11683 1 a11683 1 /// Check if two standard-layout structs are layout-compatible. d11685 3 a11687 2 static bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11728 1 a11728 1 /// Check if two standard-layout unions are layout-compatible. d11730 3 a11732 2 static bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11757 1 a11757 2 static bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { d11767 2 a11768 2 /// Check if two types are layout-compatible in C++11 sense. static bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { d11802 1 d11806 2 a11807 1 /// Given a type tag expression find the type tag itself. d11814 2 a11815 2 static bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { d11878 1 a11878 1 /// Retrieve the C type corresponding to type tag TypeExpr. d11890 1 a11890 1 static bool GetMatchingCType( d11933 1 d11948 2 a11949 1 static bool IsSameCharType(QualType T1, QualType T2) { d11966 1 d11969 1 a11969 2 const ArrayRef ExprArgs, SourceLocation CallSiteLoc) { d11973 1 a11973 8 // Retrieve the argument representing the 'type_tag'. unsigned TypeTagIdxAST = Attr->getTypeTagIdx().getASTIndex(); if (TypeTagIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 0 << Attr->getTypeTagIdx().getSourceIndex(); return; } const Expr *TypeTagExpr = ExprArgs[TypeTagIdxAST]; d11986 1 a11986 8 // Retrieve the argument representing the 'arg_idx'. unsigned ArgumentIdxAST = Attr->getArgumentIdx().getASTIndex(); if (ArgumentIdxAST >= ExprArgs.size()) { Diag(CallSiteLoc, diag::err_tag_index_out_of_range) << 1 << Attr->getArgumentIdx().getSourceIndex(); return; } const Expr *ArgumentExpr = ExprArgs[ArgumentIdxAST]; d12077 2 a12078 3 (T->isPointerType() && (T->getPointeeType()->isIncompleteType() || Context.getTypeAlignInChars( T->getPointeeType()) <= MA->Alignment)))) a12194 1 d12199 1 @ 1.1.1.15 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.7.4.1 log @file SemaChecking.cpp was added on branch tls-maxphys on 2014-08-19 23:47:30 +0000 @ text @d1 8285 @ 1.1.1.7.4.2 log @Rebase to HEAD as of a few days ago. @ text @a0 8285 //===--- SemaChecking.cpp - Extra Semantic Checking -----------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file implements extra semantic analysis beyond what is enforced // by the C type system. // //===----------------------------------------------------------------------===// #include "clang/Sema/SemaInternal.h" #include "clang/AST/ASTContext.h" #include "clang/AST/CharUnits.h" #include "clang/AST/DeclCXX.h" #include "clang/AST/DeclObjC.h" #include "clang/AST/EvaluatedExprVisitor.h" #include "clang/AST/Expr.h" #include "clang/AST/ExprCXX.h" #include "clang/AST/ExprObjC.h" #include "clang/AST/StmtCXX.h" #include "clang/AST/StmtObjC.h" #include "clang/Analysis/Analyses/FormatString.h" #include "clang/Basic/CharInfo.h" #include "clang/Basic/TargetBuiltins.h" #include "clang/Basic/TargetInfo.h" #include "clang/Lex/Lexer.h" // TODO: Extract static functions to fix layering. #include "clang/Sema/Initialization.h" #include "clang/Sema/Lookup.h" #include "clang/Sema/ScopeInfo.h" #include "clang/Sema/Sema.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallBitVector.h" #include "llvm/ADT/SmallString.h" #include "llvm/Support/ConvertUTF.h" #include "llvm/Support/raw_ostream.h" #include using namespace clang; using namespace sema; SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL, unsigned ByteNo) const { return SL->getLocationOfByte(ByteNo, getSourceManager(), LangOpts, Context.getTargetInfo()); } /// Checks that a call expression's argument count is the desired number. /// This is useful when doing custom type-checking. Returns true on error. static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) { unsigned argCount = call->getNumArgs(); if (argCount == desiredArgCount) return false; if (argCount < desiredArgCount) return S.Diag(call->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getSourceRange(); // Highlight all the excess arguments. SourceRange range(call->getArg(desiredArgCount)->getLocStart(), call->getArg(argCount - 1)->getLocEnd()); return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getArg(1)->getSourceRange(); } /// Check that the first argument to __builtin_annotation is an integer /// and the second argument is a non-wide string literal. static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; // First argument should be an integer. Expr *ValArg = TheCall->getArg(0); QualType Ty = ValArg->getType(); if (!Ty->isIntegerType()) { S.Diag(ValArg->getLocStart(), diag::err_builtin_annotation_first_arg) << ValArg->getSourceRange(); return true; } // Second argument should be a constant string. Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(StrArg); if (!Literal || !Literal->isAscii()) { S.Diag(StrArg->getLocStart(), diag::err_builtin_annotation_second_arg) << StrArg->getSourceRange(); return true; } TheCall->setType(Ty); return false; } /// Check that the argument to __builtin_addressof is a glvalue, and set the /// result type to the corresponding pointer type. static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 1)) return true; ExprResult Arg(TheCall->getArg(0)); QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getLocStart()); if (ResultType.isNull()) return true; TheCall->setArg(0, Arg.get()); TheCall->setType(ResultType); return false; } ExprResult Sema::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { ExprResult TheCallResult(TheCall); // Find out if any arguments are required to be integer constant expressions. unsigned ICEArguments = 0; ASTContext::GetBuiltinTypeError Error; Context.GetBuiltinType(BuiltinID, Error, &ICEArguments); if (Error != ASTContext::GE_None) ICEArguments = 0; // Don't diagnose previously diagnosed errors. // If any arguments are required to be ICE's, check and diagnose. for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) { // Skip arguments not required to be ICE's. if ((ICEArguments & (1 << ArgNo)) == 0) continue; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, ArgNo, Result)) return true; ICEArguments &= ~(1 << ArgNo); } switch (BuiltinID) { case Builtin::BI__builtin___CFStringMakeConstantString: assert(TheCall->getNumArgs() == 1 && "Wrong # arguments to builtin CFStringMakeConstantString"); if (CheckObjCString(TheCall->getArg(0))) return ExprError(); break; case Builtin::BI__builtin_stdarg_start: case Builtin::BI__builtin_va_start: if (SemaBuiltinVAStart(TheCall)) return ExprError(); break; case Builtin::BI__va_start: { switch (Context.getTargetInfo().getTriple().getArch()) { case llvm::Triple::arm: case llvm::Triple::thumb: if (SemaBuiltinVAStartARM(TheCall)) return ExprError(); break; default: if (SemaBuiltinVAStart(TheCall)) return ExprError(); break; } break; } case Builtin::BI__builtin_isgreater: case Builtin::BI__builtin_isgreaterequal: case Builtin::BI__builtin_isless: case Builtin::BI__builtin_islessequal: case Builtin::BI__builtin_islessgreater: case Builtin::BI__builtin_isunordered: if (SemaBuiltinUnorderedCompare(TheCall)) return ExprError(); break; case Builtin::BI__builtin_fpclassify: if (SemaBuiltinFPClassification(TheCall, 6)) return ExprError(); break; case Builtin::BI__builtin_isfinite: case Builtin::BI__builtin_isinf: case Builtin::BI__builtin_isinf_sign: case Builtin::BI__builtin_isnan: case Builtin::BI__builtin_isnormal: if (SemaBuiltinFPClassification(TheCall, 1)) return ExprError(); break; case Builtin::BI__builtin_shufflevector: return SemaBuiltinShuffleVector(TheCall); // TheCall will be freed by the smart pointer here, but that's fine, since // SemaBuiltinShuffleVector guts it, but then doesn't release it. case Builtin::BI__builtin_prefetch: if (SemaBuiltinPrefetch(TheCall)) return ExprError(); break; case Builtin::BI__assume: if (SemaBuiltinAssume(TheCall)) return ExprError(); break; case Builtin::BI__builtin_object_size: if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3)) return ExprError(); break; case Builtin::BI__builtin_longjmp: if (SemaBuiltinLongjmp(TheCall)) return ExprError(); break; case Builtin::BI__builtin_classify_type: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__builtin_constant_p: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: return SemaBuiltinAtomicOverloaded(TheCallResult); #define BUILTIN(ID, TYPE, ATTRS) #define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \ case Builtin::BI##ID: \ return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID); #include "clang/Basic/Builtins.def" case Builtin::BI__builtin_annotation: if (SemaBuiltinAnnotation(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_addressof: if (SemaBuiltinAddressof(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_operator_new: case Builtin::BI__builtin_operator_delete: if (!getLangOpts().CPlusPlus) { Diag(TheCall->getExprLoc(), diag::err_builtin_requires_language) << (BuiltinID == Builtin::BI__builtin_operator_new ? "__builtin_operator_new" : "__builtin_operator_delete") << "C++"; return ExprError(); } // CodeGen assumes it can find the global new and delete to call, // so ensure that they are declared. DeclareGlobalNewDelete(); break; } // Since the target specific builtins for each arch overlap, only check those // of the arch we are compiling for. if (BuiltinID >= Builtin::FirstTSBuiltin) { switch (Context.getTargetInfo().getTriple().getArch()) { case llvm::Triple::arm: case llvm::Triple::armeb: case llvm::Triple::thumb: case llvm::Triple::thumbeb: if (CheckARMBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::aarch64: case llvm::Triple::aarch64_be: if (CheckAArch64BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::mips: case llvm::Triple::mipsel: case llvm::Triple::mips64: case llvm::Triple::mips64el: if (CheckMipsBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::x86: case llvm::Triple::x86_64: if (CheckX86BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; default: break; } } return TheCallResult; } // Get the valid immediate range for the specified NEON type code. static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) { NeonTypeFlags Type(t); int IsQuad = ForceQuad ? true : Type.isQuad(); switch (Type.getEltType()) { case NeonTypeFlags::Int8: case NeonTypeFlags::Poly8: return shift ? 7 : (8 << IsQuad) - 1; case NeonTypeFlags::Int16: case NeonTypeFlags::Poly16: return shift ? 15 : (4 << IsQuad) - 1; case NeonTypeFlags::Int32: return shift ? 31 : (2 << IsQuad) - 1; case NeonTypeFlags::Int64: case NeonTypeFlags::Poly64: return shift ? 63 : (1 << IsQuad) - 1; case NeonTypeFlags::Poly128: return shift ? 127 : (1 << IsQuad) - 1; case NeonTypeFlags::Float16: assert(!shift && "cannot shift float types!"); return (4 << IsQuad) - 1; case NeonTypeFlags::Float32: assert(!shift && "cannot shift float types!"); return (2 << IsQuad) - 1; case NeonTypeFlags::Float64: assert(!shift && "cannot shift float types!"); return (1 << IsQuad) - 1; } llvm_unreachable("Invalid NeonTypeFlag!"); } /// getNeonEltType - Return the QualType corresponding to the elements of /// the vector type specified by the NeonTypeFlags. This is used to check /// the pointer arguments for Neon load/store intrinsics. static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context, bool IsPolyUnsigned, bool IsInt64Long) { switch (Flags.getEltType()) { case NeonTypeFlags::Int8: return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Int16: return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Int32: return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy; case NeonTypeFlags::Int64: if (IsInt64Long) return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy; else return Flags.isUnsigned() ? Context.UnsignedLongLongTy : Context.LongLongTy; case NeonTypeFlags::Poly8: return IsPolyUnsigned ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Poly16: return IsPolyUnsigned ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Poly64: return Context.UnsignedLongTy; case NeonTypeFlags::Poly128: break; case NeonTypeFlags::Float16: return Context.HalfTy; case NeonTypeFlags::Float32: return Context.FloatTy; case NeonTypeFlags::Float64: return Context.DoubleTy; } llvm_unreachable("Invalid NeonTypeFlag!"); } bool Sema::CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; uint64_t mask = 0; unsigned TV = 0; int PtrArgNum = -1; bool HasConstPtr = false; switch (BuiltinID) { #define GET_NEON_OVERLOAD_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_OVERLOAD_CHECK } // For NEON intrinsics which are overloaded on vector element type, validate // the immediate which specifies which variant to emit. unsigned ImmArg = TheCall->getNumArgs()-1; if (mask) { if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) return true; TV = Result.getLimitedValue(64); if ((TV > 63) || (mask & (1ULL << TV)) == 0) return Diag(TheCall->getLocStart(), diag::err_invalid_neon_type_code) << TheCall->getArg(ImmArg)->getSourceRange(); } if (PtrArgNum >= 0) { // Check that pointer arguments have the specified type. Expr *Arg = TheCall->getArg(PtrArgNum); if (ImplicitCastExpr *ICE = dyn_cast(Arg)) Arg = ICE->getSubExpr(); ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); QualType RHSTy = RHS.get()->getType(); llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch(); bool IsPolyUnsigned = Arch == llvm::Triple::aarch64; bool IsInt64Long = Context.getTargetInfo().getInt64Type() == TargetInfo::SignedLong; QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, IsPolyUnsigned, IsInt64Long); if (HasConstPtr) EltTy = EltTy.withConst(); QualType LHSTy = Context.getPointerType(EltTy); AssignConvertType ConvTy; ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); if (RHS.isInvalid()) return true; if (DiagnoseAssignmentResult(ConvTy, Arg->getLocStart(), LHSTy, RHSTy, RHS.get(), AA_Assigning)) return true; } // For NEON intrinsics which take an immediate value as part of the // instruction, range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_IMMEDIATE_CHECK } return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); } bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall, unsigned MaxWidth) { assert((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) && "unexpected ARM builtin"); bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex; DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // Ensure that we have the proper number of arguments. if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2)) return true; // Inspect the pointer argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1); ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.get(); const PointerType *pointerType = PointerArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // ldrex takes a "const volatile T*" and strex takes a "volatile T*". Our next // task is to insert the appropriate casts into the AST. First work out just // what the appropriate type is. QualType ValType = pointerType->getPointeeType(); QualType AddrType = ValType.getUnqualifiedType().withVolatile(); if (IsLdrex) AddrType.addConst(); // Issue a warning if the cast is dodgy. CastKind CastNeeded = CK_NoOp; if (!AddrType.isAtLeastAsQualifiedAs(ValType)) { CastNeeded = CK_BitCast; Diag(DRE->getLocStart(), diag::ext_typecheck_convert_discards_qualifiers) << PointerArg->getType() << Context.getPointerType(AddrType) << AA_Passing << PointerArg->getSourceRange(); } // Finally, do the cast and replace the argument with the corrected version. AddrType = Context.getPointerType(AddrType); PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.get(); TheCall->setArg(IsLdrex ? 0 : 1, PointerArg); // In general, we allow ints, floats and pointers to be loaded and stored. if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType() && !ValType->isFloatingType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intfltptr) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // But ARM doesn't have instructions to deal with 128-bit versions. if (Context.getTypeSize(ValType) > MaxWidth) { assert(MaxWidth == 64 && "Diagnostic unexpectedly inaccurate"); Diag(DRE->getLocStart(), diag::err_atomic_exclusive_builtin_pointer_size) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << PointerArg->getSourceRange(); return true; } if (IsLdrex) { TheCall->setType(ValType); return false; } // Initialize the argument to be stored. ExprResult ValArg = TheCall->getArg(0); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, ValType, /*consume*/ false); ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); if (ValArg.isInvalid()) return true; TheCall->setArg(0, ValArg.get()); // __builtin_arm_strex always returns an int. It's marked as such in the .def, // but the custom checker bypasses all default analysis. TheCall->setType(Context.IntTy); return false; } bool Sema::CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; if (BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_ldaex || BuiltinID == ARM::BI__builtin_arm_strex || BuiltinID == ARM::BI__builtin_arm_stlex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 64); } if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; // For intrinsics which take an immediate value as part of the instruction, // range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case ARM::BI__builtin_arm_ssat: i = 1; l = 1; u = 31; break; case ARM::BI__builtin_arm_usat: i = 1; u = 31; break; case ARM::BI__builtin_arm_vcvtr_f: case ARM::BI__builtin_arm_vcvtr_d: i = 1; u = 1; break; case ARM::BI__builtin_arm_dmb: case ARM::BI__builtin_arm_dsb: case ARM::BI__builtin_arm_isb: l = 0; u = 15; break; } // FIXME: VFP Intrinsics should error if VFP not present. return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); } bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; if (BuiltinID == AArch64::BI__builtin_arm_ldrex || BuiltinID == AArch64::BI__builtin_arm_ldaex || BuiltinID == AArch64::BI__builtin_arm_strex || BuiltinID == AArch64::BI__builtin_arm_stlex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall, 128); } if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; // For intrinsics which take an immediate value as part of the instruction, // range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case AArch64::BI__builtin_arm_dmb: case AArch64::BI__builtin_arm_dsb: case AArch64::BI__builtin_arm_isb: l = 0; u = 15; break; } // FIXME: VFP Intrinsics should error if VFP not present. return SemaBuiltinConstantArgRange(TheCall, i, l, u + l); } bool Sema::CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break; case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break; case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break; case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break; } return SemaBuiltinConstantArgRange(TheCall, i, l, u); } bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { switch (BuiltinID) { case X86::BI_mm_prefetch: // This is declared to take (const char*, int) return SemaBuiltinConstantArgRange(TheCall, 1, 0, 3); } return false; } /// Given a FunctionDecl's FormatAttr, attempts to populate the FomatStringInfo /// parameter with the FormatAttr's correct format_idx and firstDataArg. /// Returns true when the format fits the function and the FormatStringInfo has /// been populated. bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, FormatStringInfo *FSI) { FSI->HasVAListArg = Format->getFirstArg() == 0; FSI->FormatIdx = Format->getFormatIdx() - 1; FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1; // The way the format attribute works in GCC, the implicit this argument // of member functions is counted. However, it doesn't appear in our own // lists, so decrement format_idx in that case. if (IsCXXMember) { if(FSI->FormatIdx == 0) return false; --FSI->FormatIdx; if (FSI->FirstDataArg != 0) --FSI->FirstDataArg; } return true; } /// Checks if a the given expression evaluates to null. /// /// \brief Returns true if the value evaluates to null. static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { // As a special case, transparent unions initialized with zero are // considered null for the purposes of the nonnull attribute. if (const RecordType *UT = Expr->getType()->getAsUnionType()) { if (UT->getDecl()->hasAttr()) if (const CompoundLiteralExpr *CLE = dyn_cast(Expr)) if (const InitListExpr *ILE = dyn_cast(CLE->getInitializer())) Expr = ILE->getInit(0); } bool Result; return (!Expr->isValueDependent() && Expr->EvaluateAsBooleanCondition(Result, S.Context) && !Result); } static void CheckNonNullArgument(Sema &S, const Expr *ArgExpr, SourceLocation CallSiteLoc) { if (CheckNonNullExpr(S, ArgExpr)) S.Diag(CallSiteLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); } static void CheckNonNullArguments(Sema &S, const NamedDecl *FDecl, const Expr * const *ExprArgs, SourceLocation CallSiteLoc) { // Check the attributes attached to the method/function itself. for (const auto *NonNull : FDecl->specific_attrs()) { for (const auto &Val : NonNull->args()) CheckNonNullArgument(S, ExprArgs[Val], CallSiteLoc); } // Check the attributes on the parameters. ArrayRef parms; if (const FunctionDecl *FD = dyn_cast(FDecl)) parms = FD->parameters(); else if (const ObjCMethodDecl *MD = dyn_cast(FDecl)) parms = MD->parameters(); unsigned argIndex = 0; for (ArrayRef::iterator I = parms.begin(), E = parms.end(); I != E; ++I, ++argIndex) { const ParmVarDecl *PVD = *I; if (PVD->hasAttr()) CheckNonNullArgument(S, ExprArgs[argIndex], CallSiteLoc); } } /// Handles the checks for format strings, non-POD arguments to vararg /// functions, and NULL arguments passed to non-NULL parameters. void Sema::checkCall(NamedDecl *FDecl, ArrayRef Args, unsigned NumParams, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { // FIXME: We should check as much as we can in the template definition. if (CurContext->isDependentContext()) return; // Printf and scanf checking. llvm::SmallBitVector CheckedVarArgs; if (FDecl) { for (const auto *I : FDecl->specific_attrs()) { // Only create vector if there are format attributes. CheckedVarArgs.resize(Args.size()); CheckFormatArguments(I, Args, IsMemberFunction, CallType, Loc, Range, CheckedVarArgs); } } // Refuse POD arguments that weren't caught by the format string // checks above. if (CallType != VariadicDoesNotApply) { for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) { // Args[ArgIdx] can be null in malformed code. if (const Expr *Arg = Args[ArgIdx]) { if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx]) checkVariadicArgument(Arg, CallType); } } } if (FDecl) { CheckNonNullArguments(*this, FDecl, Args.data(), Loc); // Type safety checking. for (const auto *I : FDecl->specific_attrs()) CheckArgumentWithTypeTag(I, Args.data()); } } /// CheckConstructorCall - Check a constructor call for correctness and safety /// properties not enforced by the C type system. void Sema::CheckConstructorCall(FunctionDecl *FDecl, ArrayRef Args, const FunctionProtoType *Proto, SourceLocation Loc) { VariadicCallType CallType = Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply; checkCall(FDecl, Args, Proto->getNumParams(), /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); } /// CheckFunctionCall - Check a direct function call for various correctness /// and safety properties not strictly enforced by the C type system. bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { bool IsMemberOperatorCall = isa(TheCall) && isa(FDecl); bool IsMemberFunction = isa(TheCall) || IsMemberOperatorCall; VariadicCallType CallType = getVariadicCallType(FDecl, Proto, TheCall->getCallee()); unsigned NumParams = Proto ? Proto->getNumParams() : 0; Expr** Args = TheCall->getArgs(); unsigned NumArgs = TheCall->getNumArgs(); if (IsMemberOperatorCall) { // If this is a call to a member operator, hide the first argument // from checkCall. // FIXME: Our choice of AST representation here is less than ideal. ++Args; --NumArgs; } checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumParams, IsMemberFunction, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); IdentifierInfo *FnInfo = FDecl->getIdentifier(); // None of the checks below are needed for functions that don't have // simple names (e.g., C++ conversion functions). if (!FnInfo) return false; CheckAbsoluteValueFunction(TheCall, FDecl, FnInfo); unsigned CMId = FDecl->getMemoryFunctionKind(); if (CMId == 0) return false; // Handle memory setting and copying functions. if (CMId == Builtin::BIstrlcpy || CMId == Builtin::BIstrlcat) CheckStrlcpycatArguments(TheCall, FnInfo); else if (CMId == Builtin::BIstrncat) CheckStrncatArguments(TheCall, FnInfo); else CheckMemaccessArguments(TheCall, CMId, FnInfo); return false; } bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac, ArrayRef Args) { VariadicCallType CallType = Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply; checkCall(Method, Args, Method->param_size(), /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), CallType); return false; } bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { const VarDecl *V = dyn_cast(NDecl); if (!V) return false; QualType Ty = V->getType(); if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType()) return false; VariadicCallType CallType; if (!Proto || !Proto->isVariadic()) { CallType = VariadicDoesNotApply; } else if (Ty->isBlockPointerType()) { CallType = VariadicBlock; } else { // Ty->isFunctionPointerType() CallType = VariadicFunction; } unsigned NumParams = Proto ? Proto->getNumParams() : 0; checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } /// Checks function calls when a FunctionDecl or a NamedDecl is not available, /// such as function pointers returned from functions. bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) { VariadicCallType CallType = getVariadicCallType(/*FDecl=*/nullptr, Proto, TheCall->getCallee()); unsigned NumParams = Proto ? Proto->getNumParams() : 0; checkCall(/*FDecl=*/nullptr, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } static bool isValidOrderingForOp(int64_t Ordering, AtomicExpr::AtomicOp Op) { if (Ordering < AtomicExpr::AO_ABI_memory_order_relaxed || Ordering > AtomicExpr::AO_ABI_memory_order_seq_cst) return false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: llvm_unreachable("There is no ordering argument for an init"); case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: case AtomicExpr::AO__atomic_load: return Ordering != AtomicExpr::AO_ABI_memory_order_release && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: return Ordering != AtomicExpr::AO_ABI_memory_order_consume && Ordering != AtomicExpr::AO_ABI_memory_order_acquire && Ordering != AtomicExpr::AO_ABI_memory_order_acq_rel; default: return true; } } ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult, AtomicExpr::AtomicOp Op) { CallExpr *TheCall = cast(TheCallResult.get()); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // All these operations take one of the following forms: enum { // C __c11_atomic_init(A *, C) Init, // C __c11_atomic_load(A *, int) Load, // void __atomic_load(A *, CP, int) Copy, // C __c11_atomic_add(A *, M, int) Arithmetic, // C __atomic_exchange_n(A *, CP, int) Xchg, // void __atomic_exchange(A *, C *, CP, int) GNUXchg, // bool __c11_atomic_compare_exchange_strong(A *, C *, CP, int, int) C11CmpXchg, // bool __atomic_compare_exchange(A *, C *, CP, bool, int, int) GNUCmpXchg } Form = Init; const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 4, 5, 6 }; const unsigned NumVals[] = { 1, 0, 1, 1, 1, 2, 2, 3 }; // where: // C is an appropriate type, // A is volatile _Atomic(C) for __c11 builtins and is C for GNU builtins, // CP is C for __c11 builtins and GNU _n builtins and is C * otherwise, // M is C if C is an integer, and ptrdiff_t if C is a pointer, and // the int parameters are for orderings. assert(AtomicExpr::AO__c11_atomic_init == 0 && AtomicExpr::AO__c11_atomic_fetch_xor + 1 == AtomicExpr::AO__atomic_load && "need to update code for modified C11 atomics"); bool IsC11 = Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor; bool IsN = Op == AtomicExpr::AO__atomic_load_n || Op == AtomicExpr::AO__atomic_store_n || Op == AtomicExpr::AO__atomic_exchange_n || Op == AtomicExpr::AO__atomic_compare_exchange_n; bool IsAddSub = false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: Form = Init; break; case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: Form = Load; break; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_load: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: Form = Copy; break; case AtomicExpr::AO__c11_atomic_fetch_add: case AtomicExpr::AO__c11_atomic_fetch_sub: case AtomicExpr::AO__atomic_fetch_add: case AtomicExpr::AO__atomic_fetch_sub: case AtomicExpr::AO__atomic_add_fetch: case AtomicExpr::AO__atomic_sub_fetch: IsAddSub = true; // Fall through. case AtomicExpr::AO__c11_atomic_fetch_and: case AtomicExpr::AO__c11_atomic_fetch_or: case AtomicExpr::AO__c11_atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_and: case AtomicExpr::AO__atomic_fetch_or: case AtomicExpr::AO__atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_nand: case AtomicExpr::AO__atomic_and_fetch: case AtomicExpr::AO__atomic_or_fetch: case AtomicExpr::AO__atomic_xor_fetch: case AtomicExpr::AO__atomic_nand_fetch: Form = Arithmetic; break; case AtomicExpr::AO__c11_atomic_exchange: case AtomicExpr::AO__atomic_exchange_n: Form = Xchg; break; case AtomicExpr::AO__atomic_exchange: Form = GNUXchg; break; case AtomicExpr::AO__c11_atomic_compare_exchange_strong: case AtomicExpr::AO__c11_atomic_compare_exchange_weak: Form = C11CmpXchg; break; case AtomicExpr::AO__atomic_compare_exchange: case AtomicExpr::AO__atomic_compare_exchange_n: Form = GNUCmpXchg; break; } // Check we have the right number of arguments. if (TheCall->getNumArgs() < NumArgs[Form]) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } else if (TheCall->getNumArgs() > NumArgs[Form]) { Diag(TheCall->getArg(NumArgs[Form])->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic operation. Expr *Ptr = TheCall->getArg(0); Ptr = DefaultFunctionArrayLvalueConversion(Ptr).get(); const PointerType *pointerType = Ptr->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // For a __c11 builtin, this should be a pointer to an _Atomic type. QualType AtomTy = pointerType->getPointeeType(); // 'A' QualType ValType = AtomTy; // 'C' if (IsC11) { if (!AtomTy->isAtomicType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (AtomTy.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_non_const_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } ValType = AtomTy->getAs()->getValueType(); } // For an arithmetic operation, the implied arithmetic must be well-formed. if (Form == Arithmetic) { // gcc does not enforce these rules for GNU atomics, but we do so for sanity. if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsAddSub && !ValType->isIntegerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_bitwise_needs_atomic_int) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } } else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) { // For __atomic_*_n operations, the value type must be a scalar integral or // pointer type which is 1, 2, 4, 8 or 16 bytes in length. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) && !AtomTy->isScalarType()) { // For GNU atomics, require a trivially-copyable type. This is not part of // the GNU atomics specification, but we enforce it for sanity. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_trivial_copy) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // FIXME: For any builtin other than a load, the ValType must not be // const-qualified. switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: // FIXME: Can this happen? By this point, ValType should be known // to be trivially copyable. Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << Ptr->getSourceRange(); return ExprError(); } QualType ResultType = ValType; if (Form == Copy || Form == GNUXchg || Form == Init) ResultType = Context.VoidTy; else if (Form == C11CmpXchg || Form == GNUCmpXchg) ResultType = Context.BoolTy; // The type of a parameter passed 'by value'. In the GNU atomics, such // arguments are actually passed as pointers. QualType ByValType = ValType; // 'CP' if (!IsC11 && !IsN) ByValType = Ptr->getType(); // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 1; i != NumArgs[Form]; ++i) { QualType Ty; if (i < NumVals[Form] + 1) { switch (i) { case 1: // The second argument is the non-atomic operand. For arithmetic, this // is always passed by value, and for a compare_exchange it is always // passed by address. For the rest, GNU uses by-address and C11 uses // by-value. assert(Form != Load); if (Form == Init || (Form == Arithmetic && ValType->isIntegerType())) Ty = ValType; else if (Form == Copy || Form == Xchg) Ty = ByValType; else if (Form == Arithmetic) Ty = Context.getPointerDiffType(); else Ty = Context.getPointerType(ValType.getUnqualifiedType()); break; case 2: // The third argument to compare_exchange / GNU exchange is a // (pointer to a) desired value. Ty = ByValType; break; case 3: // The fourth argument to GNU compare_exchange is a 'weak' flag. Ty = Context.BoolTy; break; } } else { // The order(s) are always converted to int. Ty = Context.IntTy; } InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, Ty, false); ExprResult Arg = TheCall->getArg(i); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); } // Permute the arguments into a 'consistent' order. SmallVector SubExprs; SubExprs.push_back(Ptr); switch (Form) { case Init: // Note, AtomicExpr::getVal1() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case Load: SubExprs.push_back(TheCall->getArg(1)); // Order break; case Copy: case Arithmetic: case Xchg: SubExprs.push_back(TheCall->getArg(2)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case GNUXchg: // Note, AtomicExpr::getVal2() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case C11CmpXchg: SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(4)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case GNUCmpXchg: SubExprs.push_back(TheCall->getArg(4)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(5)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 SubExprs.push_back(TheCall->getArg(3)); // Weak break; } if (SubExprs.size() >= 2 && Form != Init) { llvm::APSInt Result(32); if (SubExprs[1]->isIntegerConstantExpr(Result, Context) && !isValidOrderingForOp(Result.getSExtValue(), Op)) Diag(SubExprs[1]->getLocStart(), diag::warn_atomic_op_has_invalid_memory_order) << SubExprs[1]->getSourceRange(); } AtomicExpr *AE = new (Context) AtomicExpr(TheCall->getCallee()->getLocStart(), SubExprs, ResultType, Op, TheCall->getRParenLoc()); if ((Op == AtomicExpr::AO__c11_atomic_load || (Op == AtomicExpr::AO__c11_atomic_store)) && Context.AtomicUsesUnsupportedLibcall(AE)) Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load) ? 0 : 1); return AE; } /// checkBuiltinArgument - Given a call to a builtin function, perform /// normal type-checking on the given argument, updating the call in /// place. This is useful when a builtin function requires custom /// type-checking for some of its arguments but not necessarily all of /// them. /// /// Returns true on error. static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) { FunctionDecl *Fn = E->getDirectCallee(); assert(Fn && "builtin call without direct callee!"); ParmVarDecl *Param = Fn->getParamDecl(ArgIndex); InitializedEntity Entity = InitializedEntity::InitializeParameter(S.Context, Param); ExprResult Arg = E->getArg(0); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; E->setArg(ArgIndex, Arg.get()); return false; } /// SemaBuiltinAtomicOverloaded - We have a call to a function like /// __sync_fetch_and_add, which is an overloaded function based on the pointer /// type of its first argument. The main ActOnCallExpr routines have already /// promoted the types of arguments because all of these calls are prototyped as /// void(...). /// /// This function goes through and does final semantic checking for these /// builtins, ExprResult Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) { CallExpr *TheCall = (CallExpr *)TheCallResult.get(); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); // Ensure that we have at least one argument to do type inference from. if (TheCall->getNumArgs() < 1) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. // FIXME: We don't allow floating point scalars as input. Expr *FirstArg = TheCall->getArg(0); ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg); if (FirstArgResult.isInvalid()) return ExprError(); FirstArg = FirstArgResult.get(); TheCall->setArg(0, FirstArg); const PointerType *pointerType = FirstArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } QualType ValType = pointerType->getPointeeType(); if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intptr) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << FirstArg->getSourceRange(); return ExprError(); } // Strip any qualifiers off ValType. ValType = ValType.getUnqualifiedType(); // The majority of builtins return a value, but a few have special return // types, so allow them to override appropriately below. QualType ResultType = ValType; // We need to figure out which concrete builtin this maps onto. For example, // __sync_fetch_and_add with a 2 byte object turns into // __sync_fetch_and_add_2. #define BUILTIN_ROW(x) \ { Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \ Builtin::BI##x##_8, Builtin::BI##x##_16 } static const unsigned BuiltinIndices[][5] = { BUILTIN_ROW(__sync_fetch_and_add), BUILTIN_ROW(__sync_fetch_and_sub), BUILTIN_ROW(__sync_fetch_and_or), BUILTIN_ROW(__sync_fetch_and_and), BUILTIN_ROW(__sync_fetch_and_xor), BUILTIN_ROW(__sync_add_and_fetch), BUILTIN_ROW(__sync_sub_and_fetch), BUILTIN_ROW(__sync_and_and_fetch), BUILTIN_ROW(__sync_or_and_fetch), BUILTIN_ROW(__sync_xor_and_fetch), BUILTIN_ROW(__sync_val_compare_and_swap), BUILTIN_ROW(__sync_bool_compare_and_swap), BUILTIN_ROW(__sync_lock_test_and_set), BUILTIN_ROW(__sync_lock_release), BUILTIN_ROW(__sync_swap) }; #undef BUILTIN_ROW // Determine the index of the size. unsigned SizeIndex; switch (Context.getTypeSizeInChars(ValType).getQuantity()) { case 1: SizeIndex = 0; break; case 2: SizeIndex = 1; break; case 4: SizeIndex = 2; break; case 8: SizeIndex = 3; break; case 16: SizeIndex = 4; break; default: Diag(DRE->getLocStart(), diag::err_atomic_builtin_pointer_size) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } // Each of these builtins has one pointer argument, followed by some number of // values (0, 1 or 2) followed by a potentially empty varags list of stuff // that we ignore. Find out which row of BuiltinIndices to read from as well // as the number of fixed args. unsigned BuiltinID = FDecl->getBuiltinID(); unsigned BuiltinIndex, NumFixed = 1; switch (BuiltinID) { default: llvm_unreachable("Unknown overloaded atomic builtin!"); case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: BuiltinIndex = 0; break; case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: BuiltinIndex = 1; break; case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: BuiltinIndex = 2; break; case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: BuiltinIndex = 3; break; case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: BuiltinIndex = 4; break; case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: BuiltinIndex = 5; break; case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: BuiltinIndex = 6; break; case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: BuiltinIndex = 7; break; case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: BuiltinIndex = 8; break; case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: BuiltinIndex = 9; break; case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: BuiltinIndex = 10; NumFixed = 2; break; case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: BuiltinIndex = 11; NumFixed = 2; ResultType = Context.BoolTy; break; case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: BuiltinIndex = 12; break; case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: BuiltinIndex = 13; NumFixed = 0; ResultType = Context.VoidTy; break; case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: BuiltinIndex = 14; break; } // Now that we know how many fixed arguments we expect, first check that we // have at least that many. if (TheCall->getNumArgs() < 1+NumFixed) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1+NumFixed << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Get the decl for the concrete builtin from this, we can tell what the // concrete integer type we should convert to is. unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex]; const char *NewBuiltinName = Context.BuiltinInfo.GetName(NewBuiltinID); FunctionDecl *NewBuiltinDecl; if (NewBuiltinID == BuiltinID) NewBuiltinDecl = FDecl; else { // Perform builtin lookup to avoid redeclaring it. DeclarationName DN(&Context.Idents.get(NewBuiltinName)); LookupResult Res(*this, DN, DRE->getLocStart(), LookupOrdinaryName); LookupName(Res, TUScope, /*AllowBuiltinCreation=*/true); assert(Res.getFoundDecl()); NewBuiltinDecl = dyn_cast(Res.getFoundDecl()); if (!NewBuiltinDecl) return ExprError(); } // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 0; i != NumFixed; ++i) { ExprResult Arg = TheCall->getArg(i+1); // GCC does an implicit conversion to the pointer or integer ValType. This // can fail in some cases (1i -> int**), check for this error case now. // Initialize the argument. InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, ValType, /*consume*/ false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return ExprError(); // Okay, we have something that *can* be converted to the right type. Check // to see if there is a potentially weird extension going on here. This can // happen when you do an atomic operation on something like an char* and // pass in 42. The 42 gets converted to char. This is even more strange // for things like 45.123 -> char, etc. // FIXME: Do this check. TheCall->setArg(i+1, Arg.get()); } ASTContext& Context = this->getASTContext(); // Create a new DeclRefExpr to refer to the new decl. DeclRefExpr* NewDRE = DeclRefExpr::Create( Context, DRE->getQualifierLoc(), SourceLocation(), NewBuiltinDecl, /*enclosing*/ false, DRE->getLocation(), Context.BuiltinFnTy, DRE->getValueKind()); // Set the callee in the CallExpr. // FIXME: This loses syntactic information. QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType()); ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy, CK_BuiltinFnToFnPtr); TheCall->setCallee(PromotedCall.get()); // Change the result type of the call to match the original value type. This // is arbitrary, but the codegen for these builtins ins design to handle it // gracefully. TheCall->setType(ResultType); return TheCallResult; } /// CheckObjCString - Checks that the argument to the builtin /// CFString constructor is correct /// Note: It might also make sense to do the UTF-16 conversion here (would /// simplify the backend). bool Sema::CheckObjCString(Expr *Arg) { Arg = Arg->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(Arg); if (!Literal || !Literal->isAscii()) { Diag(Arg->getLocStart(), diag::err_cfstring_literal_not_string_constant) << Arg->getSourceRange(); return true; } if (Literal->containsNonAsciiOrNull()) { StringRef String = Literal->getString(); unsigned NumBytes = String.size(); SmallVector ToBuf(NumBytes); const UTF8 *FromPtr = (const UTF8 *)String.data(); UTF16 *ToPtr = &ToBuf[0]; ConversionResult Result = ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, ToPtr + NumBytes, strictConversion); // Check for conversion failure. if (Result != conversionOK) Diag(Arg->getLocStart(), diag::warn_cfstring_truncated) << Arg->getSourceRange(); } return false; } /// SemaBuiltinVAStart - Check the arguments to __builtin_va_start for validity. /// Emit an error and return true on failure, return false on success. bool Sema::SemaBuiltinVAStart(CallExpr *TheCall) { Expr *Fn = TheCall->getCallee(); if (TheCall->getNumArgs() > 2) { Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << Fn->getSourceRange() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); return true; } if (TheCall->getNumArgs() < 2) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs(); } // Type-check the first argument normally. if (checkBuiltinArgument(*this, TheCall, 0)) return true; // Determine whether the current function is variadic or not. BlockScopeInfo *CurBlock = getCurBlock(); bool isVariadic; if (CurBlock) isVariadic = CurBlock->TheDecl->isVariadic(); else if (FunctionDecl *FD = getCurFunctionDecl()) isVariadic = FD->isVariadic(); else isVariadic = getCurMethodDecl()->isVariadic(); if (!isVariadic) { Diag(Fn->getLocStart(), diag::err_va_start_used_in_non_variadic_function); return true; } // Verify that the second argument to the builtin is the last argument of the // current function or method. bool SecondArgIsLastNamedArgument = false; const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts(); // These are valid if SecondArgIsLastNamedArgument is false after the next // block. QualType Type; SourceLocation ParamLoc; if (const DeclRefExpr *DR = dyn_cast(Arg)) { if (const ParmVarDecl *PV = dyn_cast(DR->getDecl())) { // FIXME: This isn't correct for methods (results in bogus warning). // Get the last formal in the current function. const ParmVarDecl *LastArg; if (CurBlock) LastArg = *(CurBlock->TheDecl->param_end()-1); else if (FunctionDecl *FD = getCurFunctionDecl()) LastArg = *(FD->param_end()-1); else LastArg = *(getCurMethodDecl()->param_end()-1); SecondArgIsLastNamedArgument = PV == LastArg; Type = PV->getType(); ParamLoc = PV->getLocation(); } } if (!SecondArgIsLastNamedArgument) Diag(TheCall->getArg(1)->getLocStart(), diag::warn_second_parameter_of_va_start_not_last_named_argument); else if (Type->isReferenceType()) { Diag(Arg->getLocStart(), diag::warn_va_start_of_reference_type_is_undefined); Diag(ParamLoc, diag::note_parameter_type) << Type; } TheCall->setType(Context.VoidTy); return false; } bool Sema::SemaBuiltinVAStartARM(CallExpr *Call) { // void __va_start(va_list *ap, const char *named_addr, size_t slot_size, // const char *named_addr); Expr *Func = Call->getCallee(); if (Call->getNumArgs() < 3) return Diag(Call->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 3 << Call->getNumArgs(); // Determine whether the current function is variadic or not. bool IsVariadic; if (BlockScopeInfo *CurBlock = getCurBlock()) IsVariadic = CurBlock->TheDecl->isVariadic(); else if (FunctionDecl *FD = getCurFunctionDecl()) IsVariadic = FD->isVariadic(); else if (ObjCMethodDecl *MD = getCurMethodDecl()) IsVariadic = MD->isVariadic(); else llvm_unreachable("unexpected statement type"); if (!IsVariadic) { Diag(Func->getLocStart(), diag::err_va_start_used_in_non_variadic_function); return true; } // Type-check the first argument normally. if (checkBuiltinArgument(*this, Call, 0)) return true; static const struct { unsigned ArgNo; QualType Type; } ArgumentTypes[] = { { 1, Context.getPointerType(Context.CharTy.withConst()) }, { 2, Context.getSizeType() }, }; for (const auto &AT : ArgumentTypes) { const Expr *Arg = Call->getArg(AT.ArgNo)->IgnoreParens(); if (Arg->getType().getCanonicalType() == AT.Type.getCanonicalType()) continue; Diag(Arg->getLocStart(), diag::err_typecheck_convert_incompatible) << Arg->getType() << AT.Type << 1 /* different class */ << 0 /* qualifier difference */ << 3 /* parameter mismatch */ << AT.ArgNo + 1 << Arg->getType() << AT.Type; } return false; } /// SemaBuiltinUnorderedCompare - Handle functions like __builtin_isgreater and /// friends. This is declared to take (...), so we have to check everything. bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << 2 << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > 2) return Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); ExprResult OrigArg0 = TheCall->getArg(0); ExprResult OrigArg1 = TheCall->getArg(1); // Do standard promotions between the two arguments, returning their common // type. QualType Res = UsualArithmeticConversions(OrigArg0, OrigArg1, false); if (OrigArg0.isInvalid() || OrigArg1.isInvalid()) return true; // Make sure any conversions are pushed back into the call; this is // type safe since unordered compare builtins are declared as "_Bool // foo(...)". TheCall->setArg(0, OrigArg0.get()); TheCall->setArg(1, OrigArg1.get()); if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent()) return false; // If the common type isn't a real floating type, then the arguments were // invalid for this operation. if (Res.isNull() || !Res->isRealFloatingType()) return Diag(OrigArg0.get()->getLocStart(), diag::err_typecheck_call_invalid_ordered_compare) << OrigArg0.get()->getType() << OrigArg1.get()->getType() << SourceRange(OrigArg0.get()->getLocStart(), OrigArg1.get()->getLocEnd()); return false; } /// SemaBuiltinSemaBuiltinFPClassification - Handle functions like /// __builtin_isnan and friends. This is declared to take (...), so we have /// to check everything. We expect the last argument to be a floating point /// value. bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) { if (TheCall->getNumArgs() < NumArgs) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > NumArgs) return Diag(TheCall->getArg(NumArgs)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << NumArgs << TheCall->getNumArgs() << SourceRange(TheCall->getArg(NumArgs)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); Expr *OrigArg = TheCall->getArg(NumArgs-1); if (OrigArg->isTypeDependent()) return false; // This operation requires a non-_Complex floating-point number. if (!OrigArg->getType()->isRealFloatingType()) return Diag(OrigArg->getLocStart(), diag::err_typecheck_call_invalid_unary_fp) << OrigArg->getType() << OrigArg->getSourceRange(); // If this is an implicit conversion from float -> double, remove it. if (ImplicitCastExpr *Cast = dyn_cast(OrigArg)) { Expr *CastArg = Cast->getSubExpr(); if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) { assert(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) && "promotion from float to double is the only expected cast here"); Cast->setSubExpr(nullptr); TheCall->setArg(NumArgs-1, CastArg); } } return false; } /// SemaBuiltinShuffleVector - Handle __builtin_shufflevector. // This is declared to take (...), so we have to check everything. ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return ExprError(Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << TheCall->getSourceRange()); // Determine which of the following types of shufflevector we're checking: // 1) unary, vector mask: (lhs, mask) // 2) binary, vector mask: (lhs, rhs, mask) // 3) binary, scalar mask: (lhs, rhs, index, ..., index) QualType resType = TheCall->getArg(0)->getType(); unsigned numElements = 0; if (!TheCall->getArg(0)->isTypeDependent() && !TheCall->getArg(1)->isTypeDependent()) { QualType LHSType = TheCall->getArg(0)->getType(); QualType RHSType = TheCall->getArg(1)->getType(); if (!LHSType->isVectorType() || !RHSType->isVectorType()) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_non_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); numElements = LHSType->getAs()->getNumElements(); unsigned numResElements = TheCall->getNumArgs() - 2; // Check to see if we have a call with 2 vector arguments, the unary shuffle // with mask. If so, verify that RHS is an integer vector type with the // same number of elts as lhs. if (TheCall->getNumArgs() == 2) { if (!RHSType->hasIntegerRepresentation() || RHSType->getAs()->getNumElements() != numElements) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(1)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) { return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (numElements != numResElements) { QualType eltType = LHSType->getAs()->getElementType(); resType = Context.getVectorType(eltType, numResElements, VectorType::GenericVector); } } for (unsigned i = 2; i < TheCall->getNumArgs(); i++) { if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) continue; llvm::APSInt Result(32); if (!TheCall->getArg(i)->isIntegerConstantExpr(Result, Context)) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_nonconstant_argument) << TheCall->getArg(i)->getSourceRange()); // Allow -1 which will be translated to undef in the IR. if (Result.isSigned() && Result.isAllOnesValue()) continue; if (Result.getActiveBits() > 64 || Result.getZExtValue() >= numElements*2) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_argument_too_large) << TheCall->getArg(i)->getSourceRange()); } SmallVector exprs; for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) { exprs.push_back(TheCall->getArg(i)); TheCall->setArg(i, nullptr); } return new (Context) ShuffleVectorExpr(Context, exprs, resType, TheCall->getCallee()->getLocStart(), TheCall->getRParenLoc()); } /// SemaConvertVectorExpr - Handle __builtin_convertvector ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, SourceLocation BuiltinLoc, SourceLocation RParenLoc) { ExprValueKind VK = VK_RValue; ExprObjectKind OK = OK_Ordinary; QualType DstTy = TInfo->getType(); QualType SrcTy = E->getType(); if (!SrcTy->isVectorType() && !SrcTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector) << E->getSourceRange()); if (!DstTy->isVectorType() && !DstTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector_type)); if (!SrcTy->isDependentType() && !DstTy->isDependentType()) { unsigned SrcElts = SrcTy->getAs()->getNumElements(); unsigned DstElts = DstTy->getAs()->getNumElements(); if (SrcElts != DstElts) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_incompatible_vector) << E->getSourceRange()); } return new (Context) ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc); } /// SemaBuiltinPrefetch - Handle __builtin_prefetch. // This is declared to take (const void*, ...) and can take two // optional constant int args. bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs > 3) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange(); // Argument 0 is checked for us and the remaining arguments must be // constant integers. for (unsigned i = 1; i != NumArgs; ++i) if (SemaBuiltinConstantArgRange(TheCall, i, 0, i == 1 ? 1 : 3)) return true; return false; } /// SemaBuiltinAssume - Handle __assume (MS Extension). // __assume does not evaluate its arguments, and should warn if its argument // has side effects. bool Sema::SemaBuiltinAssume(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(0); if (Arg->isInstantiationDependent()) return false; if (Arg->HasSideEffects(Context)) return Diag(Arg->getLocStart(), diag::warn_assume_side_effects) << Arg->getSourceRange(); return false; } /// SemaBuiltinConstantArg - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression. bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, llvm::APSInt &Result) { Expr *Arg = TheCall->getArg(ArgNum); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; if (!Arg->isIntegerConstantExpr(Result, Context)) return Diag(TheCall->getLocStart(), diag::err_constant_integer_arg_type) << FDecl->getDeclName() << Arg->getSourceRange(); return false; } /// SemaBuiltinConstantArgRange - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression in the range [Low, High]. bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum, int Low, int High) { llvm::APSInt Result; // We can't check the value of a dependent argument. Expr *Arg = TheCall->getArg(ArgNum); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, ArgNum, Result)) return true; if (Result.getSExtValue() < Low || Result.getSExtValue() > High) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << Low << High << Arg->getSourceRange(); return false; } /// SemaBuiltinLongjmp - Handle __builtin_longjmp(void *env[5], int val). /// This checks that val is a constant 1. bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(1); llvm::APSInt Result; // TODO: This is less than ideal. Overload this to take a value. if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (Result != 1) return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_invalid_val) << SourceRange(Arg->getLocStart(), Arg->getLocEnd()); return false; } namespace { enum StringLiteralCheckType { SLCT_NotALiteral, SLCT_UncheckedLiteral, SLCT_CheckedLiteral }; } // Determine if an expression is a string literal or constant string. // If this function returns false on the arguments to a function expecting a // format string, we will usually need to emit a warning. // True string literals are then checked by CheckFormatString. static StringLiteralCheckType checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, Sema::VariadicCallType CallType, bool InFunctionCall, llvm::SmallBitVector &CheckedVarArgs) { tryAgain: if (E->isTypeDependent() || E->isValueDependent()) return SLCT_NotALiteral; E = E->IgnoreParenCasts(); if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) // Technically -Wformat-nonliteral does not warn about this case. // The behavior of printf and friends in this case is implementation // dependent. Ideally if the format string cannot be null then // it should have a 'nonnull' attribute in the function prototype. return SLCT_UncheckedLiteral; switch (E->getStmtClass()) { case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { // The expression is a literal if both sub-expressions were, and it was // completely checked only if both sub-expressions were checked. const AbstractConditionalOperator *C = cast(E); StringLiteralCheckType Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); if (Left == SLCT_NotALiteral) return SLCT_NotALiteral; StringLiteralCheckType Right = checkFormatStringExpr(S, C->getFalseExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); return Left < Right ? Left : Right; } case Stmt::ImplicitCastExprClass: { E = cast(E)->getSubExpr(); goto tryAgain; } case Stmt::OpaqueValueExprClass: if (const Expr *src = cast(E)->getSourceExpr()) { E = src; goto tryAgain; } return SLCT_NotALiteral; case Stmt::PredefinedExprClass: // While __func__, etc., are technically not string literals, they // cannot contain format specifiers and thus are not a security // liability. return SLCT_UncheckedLiteral; case Stmt::DeclRefExprClass: { const DeclRefExpr *DR = cast(E); // As an exception, do not flag errors for variables binding to // const string literals. if (const VarDecl *VD = dyn_cast(DR->getDecl())) { bool isConstant = false; QualType T = DR->getType(); if (const ArrayType *AT = S.Context.getAsArrayType(T)) { isConstant = AT->getElementType().isConstant(S.Context); } else if (const PointerType *PT = T->getAs()) { isConstant = T.isConstant(S.Context) && PT->getPointeeType().isConstant(S.Context); } else if (T->isObjCObjectPointerType()) { // In ObjC, there is usually no "const ObjectPointer" type, // so don't check if the pointee type is constant. isConstant = T.isConstant(S.Context); } if (isConstant) { if (const Expr *Init = VD->getAnyInitializer()) { // Look through initializers like const char c[] = { "foo" } if (const InitListExpr *InitList = dyn_cast(Init)) { if (InitList->isStringLiteralInit()) Init = InitList->getInit(0)->IgnoreParenImpCasts(); } return checkFormatStringExpr(S, Init, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*InFunctionCall*/false, CheckedVarArgs); } } // For vprintf* functions (i.e., HasVAListArg==true), we add a // special check to see if the format string is a function parameter // of the function calling the printf function. If the function // has an attribute indicating it is a printf-like function, then we // should suppress warnings concerning non-literals being used in a call // to a vprintf function. For example: // // void // logmessage(char const *fmt __attribute__ (format (printf, 1, 2)), ...){ // va_list ap; // va_start(ap, fmt); // vprintf(fmt, ap); // Do NOT emit a warning about "fmt". // ... // } if (HasVAListArg) { if (const ParmVarDecl *PV = dyn_cast(VD)) { if (const NamedDecl *ND = dyn_cast(PV->getDeclContext())) { int PVIndex = PV->getFunctionScopeIndex() + 1; for (const auto *PVFormat : ND->specific_attrs()) { // adjust for implicit parameter if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) ++PVIndex; // We also check if the formats are compatible. // We can't pass a 'scanf' string to a 'printf' function. if (PVIndex == PVFormat->getFormatIdx() && Type == S.GetFormatStringType(PVFormat)) return SLCT_UncheckedLiteral; } } } } } return SLCT_NotALiteral; } case Stmt::CallExprClass: case Stmt::CXXMemberCallExprClass: { const CallExpr *CE = cast(E); if (const NamedDecl *ND = dyn_cast_or_null(CE->getCalleeDecl())) { if (const FormatArgAttr *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) --ArgIndex; const Expr *Arg = CE->getArg(ArgIndex - 1); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } else if (const FunctionDecl *FD = dyn_cast(ND)) { unsigned BuiltinID = FD->getBuiltinID(); if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString || BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) { const Expr *Arg = CE->getArg(0); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } } } return SLCT_NotALiteral; } case Stmt::ObjCStringLiteralClass: case Stmt::StringLiteralClass: { const StringLiteral *StrE = nullptr; if (const ObjCStringLiteral *ObjCFExpr = dyn_cast(E)) StrE = ObjCFExpr->getString(); else StrE = cast(E); if (StrE) { S.CheckFormatString(StrE, E, Args, HasVAListArg, format_idx, firstDataArg, Type, InFunctionCall, CallType, CheckedVarArgs); return SLCT_CheckedLiteral; } return SLCT_NotALiteral; } default: return SLCT_NotALiteral; } } Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) { return llvm::StringSwitch(Format->getType()->getName()) .Case("scanf", FST_Scanf) .Cases("printf", "printf0", FST_Printf) .Cases("NSString", "CFString", FST_NSString) .Case("strftime", FST_Strftime) .Case("strfmon", FST_Strfmon) .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) .Default(FST_Unknown); } /// CheckFormatArguments - Check calls to printf and scanf (and similar /// functions) for correct use of format strings. /// Returns true if a format string has been fully checked. bool Sema::CheckFormatArguments(const FormatAttr *Format, ArrayRef Args, bool IsCXXMember, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { FormatStringInfo FSI; if (getFormatStringInfo(Format, IsCXXMember, &FSI)) return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx, FSI.FirstDataArg, GetFormatStringType(Format), CallType, Loc, Range, CheckedVarArgs); return false; } bool Sema::CheckFormatArguments(ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: printf/scanf-like function is called with no format string. if (format_idx >= Args.size()) { Diag(Loc, diag::warn_missing_format_string) << Range; return false; } const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts(); // CHECK: format string is not a string literal. // // Dynamically generated format strings are difficult to // automatically vet at compile time. Requiring that format strings // are string literals: (1) permits the checking of format strings by // the compiler and thereby (2) can practically remove the source of // many format string exploits. // Format string can be either ObjC string (e.g. @@"%d") or // C string (e.g. "%d") // ObjC string uses the same format specifiers as C string, so we can use // the same format string checking logic for both ObjC and C strings. StringLiteralCheckType CT = checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*IsFunctionCall*/true, CheckedVarArgs); if (CT != SLCT_NotALiteral) // Literal format string found, check done! return CT == SLCT_CheckedLiteral; // Strftime is particular as it always uses a single 'time' argument, // so it is safe to pass a non-literal string. if (Type == FST_Strftime) return false; // Do not emit diag when the string param is a macro expansion and the // format is either NSString or CFString. This is a hack to prevent // diag when using the NSLocalizedString and CFCopyLocalizedString macros // which are usually used in place of NS and CF string literals. if (Type == FST_NSString && SourceMgr.isInSystemMacro(Args[format_idx]->getLocStart())) return false; // If there are no arguments specified, warn with -Wformat-security, otherwise // warn only with -Wformat-nonliteral. if (Args.size() == firstDataArg) Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral_noargs) << OrigFormatExpr->getSourceRange(); else Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral) << OrigFormatExpr->getSourceRange(); return false; } namespace { class CheckFormatHandler : public analyze_format_string::FormatStringHandler { protected: Sema &S; const StringLiteral *FExpr; const Expr *OrigFormatExpr; const unsigned FirstDataArg; const unsigned NumDataArgs; const char *Beg; // Start of format string. const bool HasVAListArg; ArrayRef Args; unsigned FormatIdx; llvm::SmallBitVector CoveredArgs; bool usesPositionalArgs; bool atFirstArg; bool inFunctionCall; Sema::VariadicCallType CallType; llvm::SmallBitVector &CheckedVarArgs; public: CheckFormatHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType callType, llvm::SmallBitVector &CheckedVarArgs) : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), usesPositionalArgs(false), atFirstArg(true), inFunctionCall(inFunctionCall), CallType(callType), CheckedVarArgs(CheckedVarArgs) { CoveredArgs.resize(numDataArgs); CoveredArgs.reset(); } void DoneProcessing(); void HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen) override; void HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID); void HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen); void HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen); void HandlePosition(const char *startPos, unsigned posLen) override; void HandleInvalidPosition(const char *startSpecifier, unsigned specifierLen, analyze_format_string::PositionContext p) override; void HandleZeroPosition(const char *startPos, unsigned posLen) override; void HandleNullChar(const char *nullCharacter) override; template static void EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); protected: bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen); void HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen); SourceRange getFormatStringRange(); CharSourceRange getSpecifierRange(const char *startSpecifier, unsigned specifierLen); SourceLocation getLocationOfByte(const char *x); const Expr *getDataArg(unsigned i) const; bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex); template void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); }; } SourceRange CheckFormatHandler::getFormatStringRange() { return OrigFormatExpr->getSourceRange(); } CharSourceRange CheckFormatHandler:: getSpecifierRange(const char *startSpecifier, unsigned specifierLen) { SourceLocation Start = getLocationOfByte(startSpecifier); SourceLocation End = getLocationOfByte(startSpecifier + specifierLen - 1); // Advance the end SourceLocation by one due to half-open ranges. End = End.getLocWithOffset(1); return CharSourceRange::getCharRange(Start, End); } SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) { return S.getLocationOfStringLiteralByte(FExpr, x - Beg); } void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen){ EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier), getLocationOfByte(startSpecifier), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } void CheckFormatHandler::HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { FixItHint Hint; if (DiagID == diag::warn_format_nonsensical_length) Hint = FixItHint::CreateRemoval(LMRange); EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), Hint); } } void CheckFormatHandler::HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; // See if we know how to fix this conversion specifier. Optional FixedCS = CS.getStandardSpecifier(); if (FixedCS) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength()); S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier) << FixedCS->toString() << FixItHint::CreateReplacement(CSRange, FixedCS->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandlePosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen, analyze_format_string::PositionContext p) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier) << (unsigned) p, getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleZeroPosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleNullChar(const char *nullCharacter) { if (!isa(OrigFormatExpr)) { // The presence of a null character is likely an error. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_format_string_contains_null_char), getLocationOfByte(nullCharacter), /*IsStringLocation*/true, getFormatStringRange()); } } // Note that this may return NULL if there was an error parsing or building // one of the argument expressions. const Expr *CheckFormatHandler::getDataArg(unsigned i) const { return Args[FirstDataArg + i]; } void CheckFormatHandler::DoneProcessing() { // Does the number of data arguments exceed the number of // format conversions in the format string? if (!HasVAListArg) { // Find any arguments that weren't covered. CoveredArgs.flip(); signed notCoveredArg = CoveredArgs.find_first(); if (notCoveredArg >= 0) { assert((unsigned)notCoveredArg < NumDataArgs); if (const Expr *E = getDataArg((unsigned) notCoveredArg)) { SourceLocation Loc = E->getLocStart(); if (!S.getSourceManager().isInSystemMacro(Loc)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_data_arg_not_used), Loc, /*IsStringLocation*/false, getFormatStringRange()); } } } } } bool CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen) { bool keepGoing = true; if (argIndex < NumDataArgs) { // Consider the argument coverered, even though the specifier doesn't // make sense. CoveredArgs.set(argIndex); } else { // If argIndex exceeds the number of data arguments we // don't issue a warning because that is just a cascade of warnings (and // they may have intended '%%' anyway). We don't want to continue processing // the format string after this point, however, as we will like just get // gibberish when trying to match arguments. keepGoing = false; } EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_conversion) << StringRef(csStart, csLen), Loc, /*IsStringLocation*/true, getSpecifierRange(startSpec, specifierLen)); return keepGoing; } void CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen) { EmitFormatDiagnostic( S.PDiag(diag::warn_format_mix_positional_nonpositional_args), Loc, /*isStringLoc*/true, getSpecifierRange(startSpec, specifierLen)); } bool CheckFormatHandler::CheckNumArgs( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex) { if (argIndex >= NumDataArgs) { PartialDiagnostic PDiag = FS.usesPositionalArg() ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args) << (argIndex+1) << NumDataArgs) : S.PDiag(diag::warn_printf_insufficient_data_args); EmitFormatDiagnostic( PDiag, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); return false; } return true; } template void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag, Loc, IsStringLocation, StringRange, FixIt); } /// \brief If the format string is not within the funcion call, emit a note /// so that the function call and string are in diagnostic messages. /// /// \param InFunctionCall if true, the format string is within the function /// call and only one diagnostic message will be produced. Otherwise, an /// extra note will be emitted pointing to location of the format string. /// /// \param ArgumentExpr the expression that is passed as the format string /// argument in the function call. Used for getting locations when two /// diagnostics are emitted. /// /// \param PDiag the callee should already have provided any strings for the /// diagnostic message. This function only adds locations and fixits /// to diagnostics. /// /// \param Loc primary location for diagnostic. If two diagnostics are /// required, one will be at Loc and a new SourceLocation will be created for /// the other one. /// /// \param IsStringLocation if true, Loc points to the format string should be /// used for the note. Otherwise, Loc points to the argument list and will /// be used with PDiag. /// /// \param StringRange some or all of the string to highlight. This is /// templated so it can accept either a CharSourceRange or a SourceRange. /// /// \param FixIt optional fix it hint for the format string. template void CheckFormatHandler::EmitFormatDiagnostic(Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { if (InFunctionCall) { const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag); D << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { D << *I; } } else { S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag) << ArgumentExpr->getSourceRange(); const Sema::SemaDiagnosticBuilder &Note = S.Diag(IsStringLocation ? Loc : StringRange.getBegin(), diag::note_format_string_defined); Note << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { Note << *I; } } } //===--- CHECK: Printf format string checking ------------------------------===// namespace { class CheckPrintfHandler : public CheckFormatHandler { bool ObjCContext; public: CheckPrintfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, bool isObjC, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs), ObjCContext(isObjC) {} bool HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) override; bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) override; bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E); bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen); void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen); void HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); bool checkForCStrMembers(const analyze_printf::ArgType &AT, const Expr *E); }; } bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckPrintfHandler::HandleAmount( const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen) { if (Amt.hasDataArgument()) { if (!HasVAListArg) { unsigned argIndex = Amt.getArgIndex(); if (argIndex >= NumDataArgs) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg) << k, getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } // Type check the data argument. It should be an 'int'. // Although not in conformance with C99, we also allow the argument to be // an 'unsigned int' as that is a reasonably safe case. GCC also // doesn't emit a warning for that case. CoveredArgs.set(argIndex); const Expr *Arg = getDataArg(argIndex); if (!Arg) return false; QualType T = Arg->getType(); const analyze_printf::ArgType &AT = Amt.getArgType(S.Context); assert(AT.isValid()); if (!AT.matchesType(S.Context, T)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type) << k << AT.getRepresentativeTypeName(S.Context) << T << Arg->getSourceRange(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } } } return true; } void CheckPrintfHandler::HandleInvalidAmount( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); FixItHint fixit = Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(), Amt.getConstantLength())) : FixItHint(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount) << type << CS.toString(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), fixit); } void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about pointless flag with a fixit removal. const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag) << flag.toString() << CS.toString(), getLocationOfByte(flag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(flag.getPosition(), 1))); } void CheckPrintfHandler::HandleIgnoredFlag( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about ignored flag with a fixit removal. EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag) << ignoredFlag.toString() << flag.toString(), getLocationOfByte(ignoredFlag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(ignoredFlag.getPosition(), 1))); } // Determines if the specified is a C++ class or struct containing // a member with the specified name and kind (e.g. a CXXMethodDecl named // "c_str()"). template static llvm::SmallPtrSet CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) { const RecordType *RT = Ty->getAs(); llvm::SmallPtrSet Results; if (!RT) return Results; const CXXRecordDecl *RD = dyn_cast(RT->getDecl()); if (!RD || !RD->getDefinition()) return Results; LookupResult R(S, &S.Context.Idents.get(Name), SourceLocation(), Sema::LookupMemberName); R.suppressDiagnostics(); // We just need to include all members of the right kind turned up by the // filter, at this point. if (S.LookupQualifiedName(R, RT->getDecl())) for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) { NamedDecl *decl = (*I)->getUnderlyingDecl(); if (MemberKind *FK = dyn_cast(decl)) Results.insert(FK); } return Results; } /// Check if we could call '.c_str()' on an object. /// /// FIXME: This returns the wrong results in some cases (if cv-qualifiers don't /// allow the call, or if it would be ambiguous). bool Sema::hasCStrMethod(const Expr *E) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", *this, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) if ((*MI)->getMinRequiredArguments() == 0) return true; return false; } // Check if a (w)string was passed when a (w)char* was needed, and offer a // better diagnostic if so. AT is assumed to be valid. // Returns true when a c_str() conversion method is found. bool CheckPrintfHandler::checkForCStrMembers( const analyze_printf::ArgType &AT, const Expr *E) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", S, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) { const CXXMethodDecl *Method = *MI; if (Method->getMinRequiredArguments() == 0 && AT.matchesType(S.Context, Method->getReturnType())) { // FIXME: Suggest parens if the expression needs them. SourceLocation EndLoc = S.getLocForEndOfToken(E->getLocEnd()); S.Diag(E->getLocStart(), diag::note_printf_c_str) << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()"); return true; } } return false; } bool CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; using namespace analyze_printf; const PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // First check if the field width, precision, and conversion specifier // have matching data arguments. if (!HandleAmount(FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen)) { return false; } if (!HandleAmount(FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen)) { return false; } if (!CS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check for using an Objective-C specific conversion specifier // in a non-ObjC literal. if (!ObjCContext && CS.isObjCArg()) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // Check for invalid use of field width if (!FS.hasValidFieldWidth()) { HandleInvalidAmount(FS, FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen); } // Check for invalid use of precision if (!FS.hasValidPrecision()) { HandleInvalidAmount(FS, FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen); } // Check each flag does not conflict with any other component. if (!FS.hasValidThousandsGroupingPrefix()) HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen); if (!FS.hasValidLeadingZeros()) HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen); if (!FS.hasValidPlusPrefix()) HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen); if (!FS.hasValidSpacePrefix()) HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen); if (!FS.hasValidAlternativeForm()) HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen); if (!FS.hasValidLeftJustified()) HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen); // Check that flags are not ignored by another flag if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) // ' ' ignored by '+' HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(), startSpecifier, specifierLen); if (FS.hasLeadingZeros() && FS.isLeftJustified()) // '0' ignored by '-' HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(), startSpecifier, specifierLen); // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; const Expr *Arg = getDataArg(argIndex); if (!Arg) return true; return checkFormatExpr(FS, startSpecifier, specifierLen, Arg); } static bool requiresParensToAddCast(const Expr *E) { // FIXME: We should have a general way to reason about operator // precedence and whether parens are actually needed here. // Take care of a few common cases where they aren't. const Expr *Inside = E->IgnoreImpCasts(); if (const PseudoObjectExpr *POE = dyn_cast(Inside)) Inside = POE->getSyntacticForm()->IgnoreImpCasts(); switch (Inside->getStmtClass()) { case Stmt::ArraySubscriptExprClass: case Stmt::CallExprClass: case Stmt::CharacterLiteralClass: case Stmt::CXXBoolLiteralExprClass: case Stmt::DeclRefExprClass: case Stmt::FloatingLiteralClass: case Stmt::IntegerLiteralClass: case Stmt::MemberExprClass: case Stmt::ObjCArrayLiteralClass: case Stmt::ObjCBoolLiteralExprClass: case Stmt::ObjCBoxedExprClass: case Stmt::ObjCDictionaryLiteralClass: case Stmt::ObjCEncodeExprClass: case Stmt::ObjCIvarRefExprClass: case Stmt::ObjCMessageExprClass: case Stmt::ObjCPropertyRefExprClass: case Stmt::ObjCStringLiteralClass: case Stmt::ObjCSubscriptRefExprClass: case Stmt::ParenExprClass: case Stmt::StringLiteralClass: case Stmt::UnaryOperatorClass: return false; default: return true; } } bool CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E) { using namespace analyze_format_string; using namespace analyze_printf; // Now type check the data expression that matches the // format specifier. const analyze_printf::ArgType &AT = FS.getArgType(S.Context, ObjCContext); if (!AT.isValid()) return true; QualType ExprTy = E->getType(); while (const TypeOfExprType *TET = dyn_cast(ExprTy)) { ExprTy = TET->getUnderlyingExpr()->getType(); } if (AT.matchesType(S.Context, ExprTy)) return true; // Look through argument promotions for our error message's reported type. // This includes the integral and floating promotions, but excludes array // and function pointer decay; seeing that an argument intended to be a // string has type 'char [6]' is probably more confusing than 'char *'. if (const ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() == CK_IntegralCast || ICE->getCastKind() == CK_FloatingCast) { E = ICE->getSubExpr(); ExprTy = E->getType(); // Check if we didn't match because of an implicit cast from a 'char' // or 'short' to an 'int'. This is done because printf is a varargs // function. if (ICE->getType() == S.Context.IntTy || ICE->getType() == S.Context.UnsignedIntTy) { // All further checking is done on the subexpression. if (AT.matchesType(S.Context, ExprTy)) return true; } } } else if (const CharacterLiteral *CL = dyn_cast(E)) { // Special case for 'a', which has type 'int' in C. // Note, however, that we do /not/ want to treat multibyte constants like // 'MooV' as characters! This form is deprecated but still exists. if (ExprTy == S.Context.IntTy) if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue())) ExprTy = S.Context.CharTy; } // Look through enums to their underlying type. bool IsEnum = false; if (auto EnumTy = ExprTy->getAs()) { ExprTy = EnumTy->getDecl()->getIntegerType(); IsEnum = true; } // %C in an Objective-C context prints a unichar, not a wchar_t. // If the argument is an integer of some kind, believe the %C and suggest // a cast instead of changing the conversion specifier. QualType IntendedTy = ExprTy; if (ObjCContext && FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) { if (ExprTy->isIntegralOrUnscopedEnumerationType() && !ExprTy->isCharType()) { // 'unichar' is defined as a typedef of unsigned short, but we should // prefer using the typedef if it is visible. IntendedTy = S.Context.UnsignedShortTy; // While we are here, check if the value is an IntegerLiteral that happens // to be within the valid range. if (const IntegerLiteral *IL = dyn_cast(E)) { const llvm::APInt &V = IL->getValue(); if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy)) return true; } LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getLocStart(), Sema::LookupOrdinaryName); if (S.LookupName(Result, S.getCurScope())) { NamedDecl *ND = Result.getFoundDecl(); if (TypedefNameDecl *TD = dyn_cast(ND)) if (TD->getUnderlyingType() == IntendedTy) IntendedTy = S.Context.getTypedefType(TD); } } } // Special-case some of Darwin's platform-independence types by suggesting // casts to primitive types that are known to be large enough. bool ShouldNotPrintDirectly = false; if (S.Context.getTargetInfo().getTriple().isOSDarwin()) { // Use a 'while' to peel off layers of typedefs. QualType TyTy = IntendedTy; while (const TypedefType *UserTy = TyTy->getAs()) { StringRef Name = UserTy->getDecl()->getName(); QualType CastTy = llvm::StringSwitch(Name) .Case("NSInteger", S.Context.LongTy) .Case("NSUInteger", S.Context.UnsignedLongTy) .Case("SInt32", S.Context.IntTy) .Case("UInt32", S.Context.UnsignedIntTy) .Default(QualType()); if (!CastTy.isNull()) { ShouldNotPrintDirectly = true; IntendedTy = CastTy; break; } TyTy = UserTy->desugar(); } } // We may be able to offer a FixItHint if it is a supported type. PrintfSpecifier fixedFS = FS; bool success = fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, ObjCContext); if (success) { // Get the fix string from the fixed format specifier SmallString<16> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen); if (IntendedTy == ExprTy) { // In this case, the specifier is wrong and should be changed to match // the argument. EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << IntendedTy << IsEnum << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, FixItHint::CreateReplacement(SpecRange, os.str())); } else { // The canonical type for formatting this value is different from the // actual type of the expression. (This occurs, for example, with Darwin's // NSInteger on 32-bit platforms, where it is typedef'd as 'int', but // should be printed as 'long' for 64-bit compatibility.) // Rather than emitting a normal format/argument mismatch, we want to // add a cast to the recommended type (and correct the format string // if necessary). SmallString<16> CastBuf; llvm::raw_svector_ostream CastFix(CastBuf); CastFix << "("; IntendedTy.print(CastFix, S.Context.getPrintingPolicy()); CastFix << ")"; SmallVector Hints; if (!AT.matchesType(S.Context, IntendedTy)) Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str())); if (const CStyleCastExpr *CCast = dyn_cast(E)) { // If there's already a cast present, just replace it. SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc()); Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str())); } else if (!requiresParensToAddCast(E)) { // If the expression has high enough precedence, // just write the C-style cast. Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); } else { // Otherwise, add parens around the expression as well as the cast. CastFix << "("; Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); SourceLocation After = S.getLocForEndOfToken(E->getLocEnd()); Hints.push_back(FixItHint::CreateInsertion(After, ")")); } if (ShouldNotPrintDirectly) { // The expression has a type that should not be printed directly. // We extract the name from the typedef because we don't want to show // the underlying type in the diagnostic. StringRef Name = cast(ExprTy)->getDecl()->getName(); EmitFormatDiagnostic(S.PDiag(diag::warn_format_argument_needs_cast) << Name << IntendedTy << IsEnum << E->getSourceRange(), E->getLocStart(), /*IsStringLocation=*/false, SpecRange, Hints); } else { // In this case, the expression could be printed using a different // specifier, but we've decided that the specifier is probably correct // and we should cast instead. Just use the normal warning message. EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, Hints); } } } else { const CharSourceRange &CSR = getSpecifierRange(StartSpecifier, SpecifierLen); // Since the warning for passing non-POD types to variadic functions // was deferred until now, we emit a warning for non-POD // arguments here. switch (S.isValidVarArgType(ExprTy)) { case Sema::VAK_Valid: case Sema::VAK_ValidInCXX11: EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << IsEnum << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); break; case Sema::VAK_Undefined: EmitFormatDiagnostic( S.PDiag(diag::warn_non_pod_vararg_with_format_string) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); checkForCStrMembers(AT, E); break; case Sema::VAK_Invalid: if (ExprTy->isObjCObjectType()) EmitFormatDiagnostic( S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); else // FIXME: If this is an initializer list, suggest removing the braces // or inserting a cast to the target type. S.Diag(E->getLocStart(), diag::err_cannot_pass_to_vararg_format) << isa(E) << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange(); break; } assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && "format string specifier index out of range"); CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true; } return true; } //===--- CHECK: Scanf format string checking ------------------------------===// namespace { class CheckScanfHandler : public CheckFormatHandler { public: CheckScanfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs) {} bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) override; bool HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) override; void HandleIncompleteScanList(const char *start, const char *end) override; }; } void CheckScanfHandler::HandleIncompleteScanList(const char *start, const char *end) { EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete), getLocationOfByte(end), /*IsStringLocation*/true, getSpecifierRange(start, end - start)); } bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_scanf::ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckScanfHandler::HandleScanfSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_scanf; using namespace analyze_format_string; const ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); // Handle case where '%' and '*' don't consume an argument. These shouldn't // be used to decide if we are using positional arguments consistently. if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // Check if the field with is non-zero. const OptionalAmount &Amt = FS.getFieldWidth(); if (Amt.getHowSpecified() == OptionalAmount::Constant) { if (Amt.getConstantAmount() == 0) { const CharSourceRange &R = getSpecifierRange(Amt.getStart(), Amt.getConstantLength()); EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, R, FixItHint::CreateRemoval(R)); } } if (!FS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; // Check that the argument type matches the format specifier. const Expr *Ex = getDataArg(argIndex); if (!Ex) return true; const analyze_format_string::ArgType &AT = FS.getArgType(S.Context); if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) { ScanfSpecifier fixedFS = FS; bool success = fixedFS.fixType(Ex->getType(), Ex->IgnoreImpCasts()->getType(), S.getLangOpts(), S.Context); if (success) { // Get the fix string from the fixed format specifier. SmallString<128> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateReplacement( getSpecifierRange(startSpecifier, specifierLen), os.str())); } else { EmitFormatDiagnostic( S.PDiag(diag::warn_format_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << false << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen)); } } return true; } void Sema::CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, bool inFunctionCall, VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: is the format string a wide literal? if (!FExpr->isAscii() && !FExpr->isUTF8()) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_format_string_is_wide_literal), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } // Str - The format string. NOTE: this is NOT null-terminated! StringRef StrRef = FExpr->getString(); const char *Str = StrRef.data(); // Account for cases where the string literal is truncated in a declaration. const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); assert(T && "String literal not of constant array type!"); size_t TypeSize = T->getSize().getZExtValue(); size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); const unsigned numDataArgs = Args.size() - firstDataArg; // Emit a warning if the string literal is truncated and does not contain an // embedded null character. if (TypeSize <= StrRef.size() && StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_printf_format_string_not_null_terminated), FExpr->getLocStart(), /*IsStringLocation=*/true, OrigFormatExpr->getSourceRange()); return; } // CHECK: empty format string? if (StrLen == 0 && numDataArgs > 0) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_empty_format_string), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } if (Type == FST_Printf || Type == FST_NSString) { CheckPrintfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, (Type == FST_NSString), Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } else if (Type == FST_Scanf) { CheckScanfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } // TODO: handle other formats } //===--- CHECK: Warn on use of wrong absolute value function. -------------===// // Returns the related absolute value function that is larger, of 0 if one // does not exist. static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) { switch (AbsFunction) { default: return 0; case Builtin::BI__builtin_abs: return Builtin::BI__builtin_labs; case Builtin::BI__builtin_labs: return Builtin::BI__builtin_llabs; case Builtin::BI__builtin_llabs: return 0; case Builtin::BI__builtin_fabsf: return Builtin::BI__builtin_fabs; case Builtin::BI__builtin_fabs: return Builtin::BI__builtin_fabsl; case Builtin::BI__builtin_fabsl: return 0; case Builtin::BI__builtin_cabsf: return Builtin::BI__builtin_cabs; case Builtin::BI__builtin_cabs: return Builtin::BI__builtin_cabsl; case Builtin::BI__builtin_cabsl: return 0; case Builtin::BIabs: return Builtin::BIlabs; case Builtin::BIlabs: return Builtin::BIllabs; case Builtin::BIllabs: return 0; case Builtin::BIfabsf: return Builtin::BIfabs; case Builtin::BIfabs: return Builtin::BIfabsl; case Builtin::BIfabsl: return 0; case Builtin::BIcabsf: return Builtin::BIcabs; case Builtin::BIcabs: return Builtin::BIcabsl; case Builtin::BIcabsl: return 0; } } // Returns the argument type of the absolute value function. static QualType getAbsoluteValueArgumentType(ASTContext &Context, unsigned AbsType) { if (AbsType == 0) return QualType(); ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; QualType BuiltinType = Context.GetBuiltinType(AbsType, Error); if (Error != ASTContext::GE_None) return QualType(); const FunctionProtoType *FT = BuiltinType->getAs(); if (!FT) return QualType(); if (FT->getNumParams() != 1) return QualType(); return FT->getParamType(0); } // Returns the best absolute value function, or zero, based on type and // current absolute value function. static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType, unsigned AbsFunctionKind) { unsigned BestKind = 0; uint64_t ArgSize = Context.getTypeSize(ArgType); for (unsigned Kind = AbsFunctionKind; Kind != 0; Kind = getLargerAbsoluteValueFunction(Kind)) { QualType ParamType = getAbsoluteValueArgumentType(Context, Kind); if (Context.getTypeSize(ParamType) >= ArgSize) { if (BestKind == 0) BestKind = Kind; else if (Context.hasSameType(ParamType, ArgType)) { BestKind = Kind; break; } } } return BestKind; } enum AbsoluteValueKind { AVK_Integer, AVK_Floating, AVK_Complex }; static AbsoluteValueKind getAbsoluteValueKind(QualType T) { if (T->isIntegralOrEnumerationType()) return AVK_Integer; if (T->isRealFloatingType()) return AVK_Floating; if (T->isAnyComplexType()) return AVK_Complex; llvm_unreachable("Type not integer, floating, or complex"); } // Changes the absolute value function to a different type. Preserves whether // the function is a builtin. static unsigned changeAbsFunction(unsigned AbsKind, AbsoluteValueKind ValueKind) { switch (ValueKind) { case AVK_Integer: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_abs; case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIabs; } case AVK_Floating: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_fabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIfabsf; } case AVK_Complex: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: return Builtin::BI__builtin_cabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: return Builtin::BIcabsf; } } llvm_unreachable("Unable to convert function"); } static unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { const IdentifierInfo *FnInfo = FDecl->getIdentifier(); if (!FnInfo) return 0; switch (FDecl->getBuiltinID()) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabsl: case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabs: case Builtin::BIfabsf: case Builtin::BIfabsl: case Builtin::BIcabs: case Builtin::BIcabsf: case Builtin::BIcabsl: return FDecl->getBuiltinID(); } llvm_unreachable("Unknown Builtin type"); } // If the replacement is valid, emit a note with replacement function. // Additionally, suggest including the proper header if not already included. static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range, unsigned AbsKind, QualType ArgType) { bool EmitHeaderHint = true; const char *HeaderName = nullptr; const char *FunctionName = nullptr; if (S.getLangOpts().CPlusPlus && !ArgType->isAnyComplexType()) { FunctionName = "std::abs"; if (ArgType->isIntegralOrEnumerationType()) { HeaderName = "cstdlib"; } else if (ArgType->isRealFloatingType()) { HeaderName = "cmath"; } else { llvm_unreachable("Invalid Type"); } // Lookup all std::abs if (NamespaceDecl *Std = S.getStdNamespace()) { LookupResult R(S, &S.Context.Idents.get("abs"), Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupQualifiedName(R, Std); for (const auto *I : R) { const FunctionDecl *FDecl = nullptr; if (const UsingShadowDecl *UsingD = dyn_cast(I)) { FDecl = dyn_cast(UsingD->getTargetDecl()); } else { FDecl = dyn_cast(I); } if (!FDecl) continue; // Found std::abs(), check that they are the right ones. if (FDecl->getNumParams() != 1) continue; // Check that the parameter type can handle the argument. QualType ParamType = FDecl->getParamDecl(0)->getType(); if (getAbsoluteValueKind(ArgType) == getAbsoluteValueKind(ParamType) && S.Context.getTypeSize(ArgType) <= S.Context.getTypeSize(ParamType)) { // Found a function, don't need the header hint. EmitHeaderHint = false; break; } } } } else { FunctionName = S.Context.BuiltinInfo.GetName(AbsKind); HeaderName = S.Context.BuiltinInfo.getHeaderName(AbsKind); if (HeaderName) { DeclarationName DN(&S.Context.Idents.get(FunctionName)); LookupResult R(S, DN, Loc, Sema::LookupAnyName); R.suppressDiagnostics(); S.LookupName(R, S.getCurScope()); if (R.isSingleResult()) { FunctionDecl *FD = dyn_cast(R.getFoundDecl()); if (FD && FD->getBuiltinID() == AbsKind) { EmitHeaderHint = false; } else { return; } } else if (!R.empty()) { return; } } } S.Diag(Loc, diag::note_replace_abs_function) << FunctionName << FixItHint::CreateReplacement(Range, FunctionName); if (!HeaderName) return; if (!EmitHeaderHint) return; S.Diag(Loc, diag::note_include_header_or_declare) << HeaderName << FunctionName; } static bool IsFunctionStdAbs(const FunctionDecl *FDecl) { if (!FDecl) return false; if (!FDecl->getIdentifier() || !FDecl->getIdentifier()->isStr("abs")) return false; const NamespaceDecl *ND = dyn_cast(FDecl->getDeclContext()); while (ND && ND->isInlineNamespace()) { ND = dyn_cast(ND->getDeclContext()); } if (!ND || !ND->getIdentifier() || !ND->getIdentifier()->isStr("std")) return false; if (!isa(ND->getDeclContext())) return false; return true; } // Warn when using the wrong abs() function. void Sema::CheckAbsoluteValueFunction(const CallExpr *Call, const FunctionDecl *FDecl, IdentifierInfo *FnInfo) { if (Call->getNumArgs() != 1) return; unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl); bool IsStdAbs = IsFunctionStdAbs(FDecl); if (AbsKind == 0 && !IsStdAbs) return; QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType(); QualType ParamType = Call->getArg(0)->getType(); // Unsigned types cannot be negative. Suggest removing the absolute value // function call. if (ArgType->isUnsignedIntegerType()) { const char *FunctionName = IsStdAbs ? "std::abs" : Context.BuiltinInfo.GetName(AbsKind); Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType; Diag(Call->getExprLoc(), diag::note_remove_abs) << FunctionName << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()); return; } // std::abs has overloads which prevent most of the absolute value problems // from occurring. if (IsStdAbs) return; AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType); AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType); // The argument and parameter are the same kind. Check if they are the right // size. if (ArgValueKind == ParamValueKind) { if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType)) return; unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind); Diag(Call->getExprLoc(), diag::warn_abs_too_small) << FDecl << ArgType << ParamType; if (NewAbsKind == 0) return; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); return; } // ArgValueKind != ParamValueKind // The wrong type of absolute value function was used. Attempt to find the // proper one. unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind); NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind); if (NewAbsKind == 0) return; Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type) << FDecl << ParamValueKind << ArgValueKind; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind, ArgType); return; } //===--- CHECK: Standard memory functions ---------------------------------===// /// \brief Takes the expression passed to the size_t parameter of functions /// such as memcmp, strncat, etc and warns if it's a comparison. /// /// This is to catch typos like `if (memcmp(&a, &b, sizeof(a) > 0))`. static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E, IdentifierInfo *FnName, SourceLocation FnLoc, SourceLocation RParenLoc) { const BinaryOperator *Size = dyn_cast(E); if (!Size) return false; // if E is binop and op is >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isEqualityOp() && !Size->isLogicalOp()) return false; SourceRange SizeRange = Size->getSourceRange(); S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison) << SizeRange << FnName; S.Diag(FnLoc, diag::note_memsize_comparison_paren) << FnName << FixItHint::CreateInsertion( S.getLocForEndOfToken(Size->getLHS()->getLocEnd()), ")") << FixItHint::CreateRemoval(RParenLoc); S.Diag(SizeRange.getBegin(), diag::note_memsize_comparison_cast_silence) << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(") << FixItHint::CreateInsertion(S.getLocForEndOfToken(SizeRange.getEnd()), ")"); return true; } /// \brief Determine whether the given type is or contains a dynamic class type /// (e.g., whether it has a vtable). static const CXXRecordDecl *getContainedDynamicClass(QualType T, bool &IsContained) { // Look through array types while ignoring qualifiers. const Type *Ty = T->getBaseElementTypeUnsafe(); IsContained = false; const CXXRecordDecl *RD = Ty->getAsCXXRecordDecl(); RD = RD ? RD->getDefinition() : nullptr; if (!RD) return nullptr; if (RD->isDynamicClass()) return RD; // Check all the fields. If any bases were dynamic, the class is dynamic. // It's impossible for a class to transitively contain itself by value, so // infinite recursion is impossible. for (auto *FD : RD->fields()) { bool SubContained; if (const CXXRecordDecl *ContainedRD = getContainedDynamicClass(FD->getType(), SubContained)) { IsContained = true; return ContainedRD; } } return nullptr; } /// \brief If E is a sizeof expression, returns its argument expression, /// otherwise returns NULL. static const Expr *getSizeOfExprArg(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf && !SizeOf->isArgumentType()) return SizeOf->getArgumentExpr()->IgnoreParenImpCasts(); return nullptr; } /// \brief If E is a sizeof expression, returns its argument type. static QualType getSizeOfArgType(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf) return SizeOf->getTypeOfArgument(); return QualType(); } /// \brief Check for dangerous or invalid arguments to memset(). /// /// This issues warnings on known problematic, dangerous or unspecified /// arguments to the standard 'memset', 'memcpy', 'memmove', and 'memcmp' /// function calls. /// /// \param Call The call expression to diagnose. void Sema::CheckMemaccessArguments(const CallExpr *Call, unsigned BId, IdentifierInfo *FnName) { assert(BId != 0); // It is possible to have a non-standard definition of memset. Validate // we have enough arguments, and if not, abort further checking. unsigned ExpectedNumArgs = (BId == Builtin::BIstrndup ? 2 : 3); if (Call->getNumArgs() < ExpectedNumArgs) return; unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIstrndup ? 1 : 2); unsigned LenArg = (BId == Builtin::BIstrndup ? 1 : 2); const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts(); if (CheckMemorySizeofForComparison(*this, LenExpr, FnName, Call->getLocStart(), Call->getRParenLoc())) return; // We have special checking when the length is a sizeof expression. QualType SizeOfArgTy = getSizeOfArgType(LenExpr); const Expr *SizeOfArg = getSizeOfExprArg(LenExpr); llvm::FoldingSetNodeID SizeOfArgID; for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) { const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts(); SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange(); QualType DestTy = Dest->getType(); if (const PointerType *DestPtrTy = DestTy->getAs()) { QualType PointeeTy = DestPtrTy->getPointeeType(); // Never warn about void type pointers. This can be used to suppress // false positives. if (PointeeTy->isVoidType()) continue; // Catch "memset(p, 0, sizeof(p))" -- needs to be sizeof(*p). Do this by // actually comparing the expressions for equality. Because computing the // expression IDs can be expensive, we only do this if the diagnostic is // enabled. if (SizeOfArg && !Diags.isIgnored(diag::warn_sizeof_pointer_expr_memaccess, SizeOfArg->getExprLoc())) { // We only compute IDs for expressions if the warning is enabled, and // cache the sizeof arg's ID. if (SizeOfArgID == llvm::FoldingSetNodeID()) SizeOfArg->Profile(SizeOfArgID, Context, true); llvm::FoldingSetNodeID DestID; Dest->Profile(DestID, Context, true); if (DestID == SizeOfArgID) { // TODO: For strncpy() and friends, this could suggest sizeof(dst) // over sizeof(src) as well. unsigned ActionIdx = 0; // Default is to suggest dereferencing. StringRef ReadableName = FnName->getName(); if (const UnaryOperator *UnaryOp = dyn_cast(Dest)) if (UnaryOp->getOpcode() == UO_AddrOf) ActionIdx = 1; // If its an address-of operator, just remove it. if (!PointeeTy->isIncompleteType() && (Context.getTypeSize(PointeeTy) == Context.getCharWidth())) ActionIdx = 2; // If the pointee's size is sizeof(char), // suggest an explicit length. // If the function is defined as a builtin macro, do not show macro // expansion. SourceLocation SL = SizeOfArg->getExprLoc(); SourceRange DSR = Dest->getSourceRange(); SourceRange SSR = SizeOfArg->getSourceRange(); SourceManager &SM = getSourceManager(); if (SM.isMacroArgExpansion(SL)) { ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts); SL = SM.getSpellingLoc(SL); DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()), SM.getSpellingLoc(DSR.getEnd())); SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()), SM.getSpellingLoc(SSR.getEnd())); } DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess) << ReadableName << PointeeTy << DestTy << DSR << SSR); DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess_note) << ActionIdx << SSR); break; } } // Also check for cases where the sizeof argument is the exact same // type as the memory argument, and where it points to a user-defined // record type. if (SizeOfArgTy != QualType()) { if (PointeeTy->isRecordType() && Context.typesAreCompatible(SizeOfArgTy, DestTy)) { DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest, PDiag(diag::warn_sizeof_pointer_type_memaccess) << FnName << SizeOfArgTy << ArgIdx << PointeeTy << Dest->getSourceRange() << LenExpr->getSourceRange()); break; } } // Always complain about dynamic classes. bool IsContained; if (const CXXRecordDecl *ContainedRD = getContainedDynamicClass(PointeeTy, IsContained)) { unsigned OperationType = 0; // "overwritten" if we're warning about the destination for any call // but memcmp; otherwise a verb appropriate to the call. if (ArgIdx != 0 || BId == Builtin::BImemcmp) { if (BId == Builtin::BImemcpy) OperationType = 1; else if(BId == Builtin::BImemmove) OperationType = 2; else if (BId == Builtin::BImemcmp) OperationType = 3; } DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_dyn_class_memaccess) << (BId == Builtin::BImemcmp ? ArgIdx + 2 : ArgIdx) << FnName << IsContained << ContainedRD << OperationType << Call->getCallee()->getSourceRange()); } else if (PointeeTy.hasNonTrivialObjCLifetime() && BId != Builtin::BImemset) DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_arc_object_memaccess) << ArgIdx << FnName << PointeeTy << Call->getCallee()->getSourceRange()); else continue; DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::note_bad_memaccess_silence) << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); break; } } } // A little helper routine: ignore addition and subtraction of integer literals. // This intentionally does not ignore all integer constant expressions because // we don't want to remove sizeof(). static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) { Ex = Ex->IgnoreParenCasts(); for (;;) { const BinaryOperator * BO = dyn_cast(Ex); if (!BO || !BO->isAdditiveOp()) break; const Expr *RHS = BO->getRHS()->IgnoreParenCasts(); const Expr *LHS = BO->getLHS()->IgnoreParenCasts(); if (isa(RHS)) Ex = LHS; else if (isa(LHS)) Ex = RHS; else break; } return Ex; } static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty, ASTContext &Context) { // Only handle constant-sized or VLAs, but not flexible members. if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) { // Only issue the FIXIT for arrays of size > 1. if (CAT->getSize().getSExtValue() <= 1) return false; } else if (!Ty->isVariableArrayType()) { return false; } return true; } // Warn if the user has made the 'size' argument to strlcpy or strlcat // be the size of the source, instead of the destination. void Sema::CheckStrlcpycatArguments(const CallExpr *Call, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments if (Call->getNumArgs() != 3) return; const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context); const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context); const Expr *CompareWithSrc = nullptr; if (CheckMemorySizeofForComparison(*this, SizeArg, FnName, Call->getLocStart(), Call->getRParenLoc())) return; // Look for 'strlcpy(dst, x, sizeof(x))' if (const Expr *Ex = getSizeOfExprArg(SizeArg)) CompareWithSrc = Ex; else { // Look for 'strlcpy(dst, x, strlen(x))' if (const CallExpr *SizeCall = dyn_cast(SizeArg)) { if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen && SizeCall->getNumArgs() == 1) CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context); } } if (!CompareWithSrc) return; // Determine if the argument to sizeof/strlen is equal to the source // argument. In principle there's all kinds of things you could do // here, for instance creating an == expression and evaluating it with // EvaluateAsBooleanCondition, but this uses a more direct technique: const DeclRefExpr *SrcArgDRE = dyn_cast(SrcArg); if (!SrcArgDRE) return; const DeclRefExpr *CompareWithSrcDRE = dyn_cast(CompareWithSrc); if (!CompareWithSrcDRE || SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl()) return; const Expr *OriginalSizeArg = Call->getArg(2); Diag(CompareWithSrcDRE->getLocStart(), diag::warn_strlcpycat_wrong_size) << OriginalSizeArg->getSourceRange() << FnName; // Output a FIXIT hint if the destination is an array (rather than a // pointer to an array). This could be enhanced to handle some // pointers if we know the actual size, like if DstArg is 'array+2' // we could say 'sizeof(array)-2'. const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts(); if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context)) return; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, nullptr, getPrintingPolicy()); OS << ")"; Diag(OriginalSizeArg->getLocStart(), diag::note_strlcpycat_wrong_size) << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(), OS.str()); } /// Check if two expressions refer to the same declaration. static bool referToTheSameDecl(const Expr *E1, const Expr *E2) { if (const DeclRefExpr *D1 = dyn_cast_or_null(E1)) if (const DeclRefExpr *D2 = dyn_cast_or_null(E2)) return D1->getDecl() == D2->getDecl(); return false; } static const Expr *getStrlenExprArg(const Expr *E) { if (const CallExpr *CE = dyn_cast(E)) { const FunctionDecl *FD = CE->getDirectCallee(); if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen) return nullptr; return CE->getArg(0)->IgnoreParenCasts(); } return nullptr; } // Warn on anti-patterns as the 'size' argument to strncat. // The correct size argument should look like following: // strncat(dst, src, sizeof(dst) - strlen(dest) - 1); void Sema::CheckStrncatArguments(const CallExpr *CE, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments. if (CE->getNumArgs() < 3) return; const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts(); const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts(); const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts(); if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getLocStart(), CE->getRParenLoc())) return; // Identify common expressions, which are wrongly used as the size argument // to strncat and may lead to buffer overflows. unsigned PatternType = 0; if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) { // - sizeof(dst) if (referToTheSameDecl(SizeOfArg, DstArg)) PatternType = 1; // - sizeof(src) else if (referToTheSameDecl(SizeOfArg, SrcArg)) PatternType = 2; } else if (const BinaryOperator *BE = dyn_cast(LenArg)) { if (BE->getOpcode() == BO_Sub) { const Expr *L = BE->getLHS()->IgnoreParenCasts(); const Expr *R = BE->getRHS()->IgnoreParenCasts(); // - sizeof(dst) - strlen(dst) if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) && referToTheSameDecl(DstArg, getStrlenExprArg(R))) PatternType = 1; // - sizeof(src) - (anything) else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L))) PatternType = 2; } } if (PatternType == 0) return; // Generate the diagnostic. SourceLocation SL = LenArg->getLocStart(); SourceRange SR = LenArg->getSourceRange(); SourceManager &SM = getSourceManager(); // If the function is defined as a builtin macro, do not show macro expansion. if (SM.isMacroArgExpansion(SL)) { SL = SM.getSpellingLoc(SL); SR = SourceRange(SM.getSpellingLoc(SR.getBegin()), SM.getSpellingLoc(SR.getEnd())); } // Check if the destination is an array (rather than a pointer to an array). QualType DstTy = DstArg->getType(); bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy, Context); if (!isKnownSizeArray) { if (PatternType == 1) Diag(SL, diag::warn_strncat_wrong_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; return; } if (PatternType == 1) Diag(SL, diag::warn_strncat_large_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, nullptr, getPrintingPolicy()); OS << ") - "; OS << "strlen("; DstArg->printPretty(OS, nullptr, getPrintingPolicy()); OS << ") - 1"; Diag(SL, diag::note_strncat_wrong_size) << FixItHint::CreateReplacement(SR, OS.str()); } //===--- CHECK: Return Address of Stack Variable --------------------------===// static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl); static Expr *EvalAddr(Expr* E, SmallVectorImpl &refVars, Decl *ParentDecl); /// CheckReturnStackAddr - Check if a return statement returns the address /// of a stack variable. static void CheckReturnStackAddr(Sema &S, Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc) { Expr *stackE = nullptr; SmallVector refVars; // Perform checking for returned stack addresses, local blocks, // label addresses or references to temporaries. if (lhsType->isPointerType() || (!S.getLangOpts().ObjCAutoRefCount && lhsType->isBlockPointerType())) { stackE = EvalAddr(RetValExp, refVars, /*ParentDecl=*/nullptr); } else if (lhsType->isReferenceType()) { stackE = EvalVal(RetValExp, refVars, /*ParentDecl=*/nullptr); } if (!stackE) return; // Nothing suspicious was found. SourceLocation diagLoc; SourceRange diagRange; if (refVars.empty()) { diagLoc = stackE->getLocStart(); diagRange = stackE->getSourceRange(); } else { // We followed through a reference variable. 'stackE' contains the // problematic expression but we will warn at the return statement pointing // at the reference variable. We will later display the "trail" of // reference variables using notes. diagLoc = refVars[0]->getLocStart(); diagRange = refVars[0]->getSourceRange(); } if (DeclRefExpr *DR = dyn_cast(stackE)) { //address of local var. S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_stack_ref : diag::warn_ret_stack_addr) << DR->getDecl()->getDeclName() << diagRange; } else if (isa(stackE)) { // local block. S.Diag(diagLoc, diag::err_ret_local_block) << diagRange; } else if (isa(stackE)) { // address of label. S.Diag(diagLoc, diag::warn_ret_addr_label) << diagRange; } else { // local temporary. S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_local_temp_ref : diag::warn_ret_local_temp_addr) << diagRange; } // Display the "trail" of reference variables that we followed until we // found the problematic expression using notes. for (unsigned i = 0, e = refVars.size(); i != e; ++i) { VarDecl *VD = cast(refVars[i]->getDecl()); // If this var binds to another reference var, show the range of the next // var, otherwise the var binds to the problematic expression, in which case // show the range of the expression. SourceRange range = (i < e-1) ? refVars[i+1]->getSourceRange() : stackE->getSourceRange(); S.Diag(VD->getLocation(), diag::note_ref_var_local_bind) << VD->getDeclName() << range; } } /// EvalAddr - EvalAddr and EvalVal are mutually recursive functions that /// check if the expression in a return statement evaluates to an address /// to a location on the stack, a local block, an address of a label, or a /// reference to local temporary. The recursion is used to traverse the /// AST of the return expression, with recursion backtracking when we /// encounter a subexpression that (1) clearly does not lead to one of the /// above problematic expressions (2) is something we cannot determine leads to /// a problematic expression based on such local checking. /// /// Both EvalAddr and EvalVal follow through reference variables to evaluate /// the expression that they point to. Such variables are added to the /// 'refVars' vector so that we know what the reference variable "trail" was. /// /// EvalAddr processes expressions that are pointers that are used as /// references (and not L-values). EvalVal handles all other values. /// At the base case of the recursion is a check for the above problematic /// expressions. /// /// This implementation handles: /// /// * pointer-to-pointer casts /// * implicit conversions from array references to pointers /// * taking the address of fields /// * arbitrary interplay between "&" and "*" operators /// * pointer arithmetic from an address of a stack variable /// * taking the address of an array element where the array is on the stack static Expr *EvalAddr(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { if (E->isTypeDependent()) return nullptr; // We should only be called for evaluating pointer expressions. assert((E->getType()->isAnyPointerType() || E->getType()->isBlockPointerType() || E->getType()->isObjCQualifiedIdType()) && "EvalAddr only works on pointers"); E = E->IgnoreParens(); // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. switch (E->getStmtClass()) { case Stmt::DeclRefExprClass: { DeclRefExpr *DR = cast(E); // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return nullptr; if (VarDecl *V = dyn_cast(DR->getDecl())) // If this is a reference variable, follow through to the expression that // it points to. if (V->hasLocalStorage() && V->getType()->isReferenceType() && V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalAddr(V->getInit(), refVars, ParentDecl); } return nullptr; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is AddrOf. All others don't make sense as pointers. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_AddrOf) return EvalVal(U->getSubExpr(), refVars, ParentDecl); else return nullptr; } case Stmt::BinaryOperatorClass: { // Handle pointer arithmetic. All other binary operators are not valid // in this context. BinaryOperator *B = cast(E); BinaryOperatorKind op = B->getOpcode(); if (op != BO_Add && op != BO_Sub) return nullptr; Expr *Base = B->getLHS(); // Determine which argument is the real pointer base. It could be // the RHS argument instead of the LHS. if (!Base->getType()->isPointerType()) Base = B->getRHS(); assert (Base->getType()->isPointerType()); return EvalAddr(Base, refVars, ParentDecl); } // For conditional operators we need to see if either the LHS or RHS are // valid DeclRefExpr*s. If one of them is valid, we return it. case Stmt::ConditionalOperatorClass: { ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. // FIXME: That isn't a ConditionalOperator, so doesn't get here. if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalAddr(LHSExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return nullptr; return EvalAddr(C->getRHS(), refVars, ParentDecl); } case Stmt::BlockExprClass: if (cast(E)->getBlockDecl()->hasCaptures()) return E; // local block. return nullptr; case Stmt::AddrLabelExprClass: return E; // address of label. case Stmt::ExprWithCleanupsClass: return EvalAddr(cast(E)->getSubExpr(), refVars, ParentDecl); // For casts, we need to handle conversions from arrays to // pointer values, and pointer-to-pointer conversions. case Stmt::ImplicitCastExprClass: case Stmt::CStyleCastExprClass: case Stmt::CXXFunctionalCastExprClass: case Stmt::ObjCBridgedCastExprClass: case Stmt::CXXStaticCastExprClass: case Stmt::CXXDynamicCastExprClass: case Stmt::CXXConstCastExprClass: case Stmt::CXXReinterpretCastExprClass: { Expr* SubExpr = cast(E)->getSubExpr(); switch (cast(E)->getCastKind()) { case CK_LValueToRValue: case CK_NoOp: case CK_BaseToDerived: case CK_DerivedToBase: case CK_UncheckedDerivedToBase: case CK_Dynamic: case CK_CPointerToObjCPointerCast: case CK_BlockPointerToObjCPointerCast: case CK_AnyPointerToBlockPointerCast: return EvalAddr(SubExpr, refVars, ParentDecl); case CK_ArrayToPointerDecay: return EvalVal(SubExpr, refVars, ParentDecl); case CK_BitCast: if (SubExpr->getType()->isAnyPointerType() || SubExpr->getType()->isBlockPointerType() || SubExpr->getType()->isObjCQualifiedIdType()) return EvalAddr(SubExpr, refVars, ParentDecl); else return nullptr; default: return nullptr; } } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalAddr( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; // Everything else: we simply don't reason about them. default: return nullptr; } } /// EvalVal - This function is complements EvalAddr in the mutual recursion. /// See the comments for EvalAddr for more details. static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { do { // We should only be called for evaluating non-pointer expressions, or // expressions with a pointer type that are not used as references but instead // are l-values (e.g., DeclRefExpr with a pointer type). // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. E = E->IgnoreParens(); switch (E->getStmtClass()) { case Stmt::ImplicitCastExprClass: { ImplicitCastExpr *IE = cast(E); if (IE->getValueKind() == VK_LValue) { E = IE->getSubExpr(); continue; } return nullptr; } case Stmt::ExprWithCleanupsClass: return EvalVal(cast(E)->getSubExpr(), refVars,ParentDecl); case Stmt::DeclRefExprClass: { // When we hit a DeclRefExpr we are looking at code that refers to a // variable's name. If it's not a reference variable we check if it has // local storage within the function, and if so, return the expression. DeclRefExpr *DR = cast(E); // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return nullptr; if (VarDecl *V = dyn_cast(DR->getDecl())) { // Check if it refers to itself, e.g. "int& i = i;". if (V == ParentDecl) return DR; if (V->hasLocalStorage()) { if (!V->getType()->isReferenceType()) return DR; // Reference variable, follow through to the expression that // it points to. if (V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalVal(V->getInit(), refVars, V); } } } return nullptr; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is Deref. All others don't resolve to a "name." This includes // handling all sorts of rvalues passed to a unary operator. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_Deref) return EvalAddr(U->getSubExpr(), refVars, ParentDecl); return nullptr; } case Stmt::ArraySubscriptExprClass: { // Array subscripts are potential references to data on the stack. We // retrieve the DeclRefExpr* for the array variable if it indeed // has local storage. return EvalAddr(cast(E)->getBase(), refVars,ParentDecl); } case Stmt::ConditionalOperatorClass: { // For conditional operators we need to see if either the LHS or RHS are // non-NULL Expr's. If one is non-NULL, we return it. ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalVal(LHSExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return nullptr; return EvalVal(C->getRHS(), refVars, ParentDecl); } // Accesses to members are potential references to data on the stack. case Stmt::MemberExprClass: { MemberExpr *M = cast(E); // Check for indirect access. We only want direct field accesses. if (M->isArrow()) return nullptr; // Check whether the member type is itself a reference, in which case // we're not going to refer to the member, but to what the member refers to. if (M->getMemberDecl()->getType()->isReferenceType()) return nullptr; return EvalVal(M->getBase(), refVars, ParentDecl); } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalVal( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; default: // Check that we don't return or take the address of a reference to a // temporary. This is only useful in C++. if (!E->isTypeDependent() && E->isRValue()) return E; // Everything else: we simply don't reason about them. return nullptr; } } while (true); } void Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc, bool isObjCMethod, const AttrVec *Attrs, const FunctionDecl *FD) { CheckReturnStackAddr(*this, RetValExp, lhsType, ReturnLoc); // Check if the return value is null but should not be. if (Attrs && hasSpecificAttr(*Attrs) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_null_ret) << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); // C++11 [basic.stc.dynamic.allocation]p4: // If an allocation function declared with a non-throwing // exception-specification fails to allocate storage, it shall return // a null pointer. Any other allocation function that fails to allocate // storage shall indicate failure only by throwing an exception [...] if (FD) { OverloadedOperatorKind Op = FD->getOverloadedOperator(); if (Op == OO_New || Op == OO_Array_New) { const FunctionProtoType *Proto = FD->getType()->castAs(); if (!Proto->isNothrow(Context, /*ResultIfDependent*/true) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_operator_new_returns_null) << FD << getLangOpts().CPlusPlus11; } } } //===--- CHECK: Floating-Point comparisons (-Wfloat-equal) ---------------===// /// Check for comparisons of floating point operands using != and ==. /// Issue a warning if these are no self-comparisons, as they are not likely /// to do what the programmer intended. void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) { Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts(); Expr* RightExprSansParen = RHS->IgnoreParenImpCasts(); // Special case: check for x == x (which is OK). // Do not emit warnings for such cases. if (DeclRefExpr* DRL = dyn_cast(LeftExprSansParen)) if (DeclRefExpr* DRR = dyn_cast(RightExprSansParen)) if (DRL->getDecl() == DRR->getDecl()) return; // Special case: check for comparisons against literals that can be exactly // represented by APFloat. In such cases, do not emit a warning. This // is a heuristic: often comparison against such literals are used to // detect if a value in a variable has not changed. This clearly can // lead to false negatives. if (FloatingLiteral* FLL = dyn_cast(LeftExprSansParen)) { if (FLL->isExact()) return; } else if (FloatingLiteral* FLR = dyn_cast(RightExprSansParen)) if (FLR->isExact()) return; // Check for comparisons with builtin types. if (CallExpr* CL = dyn_cast(LeftExprSansParen)) if (CL->getBuiltinCallee()) return; if (CallExpr* CR = dyn_cast(RightExprSansParen)) if (CR->getBuiltinCallee()) return; // Emit the diagnostic. Diag(Loc, diag::warn_floatingpoint_eq) << LHS->getSourceRange() << RHS->getSourceRange(); } //===--- CHECK: Integer mixed-sign comparisons (-Wsign-compare) --------===// //===--- CHECK: Lossy implicit conversions (-Wconversion) --------------===// namespace { /// Structure recording the 'active' range of an integer-valued /// expression. struct IntRange { /// The number of bits active in the int. unsigned Width; /// True if the int is known not to have negative values. bool NonNegative; IntRange(unsigned Width, bool NonNegative) : Width(Width), NonNegative(NonNegative) {} /// Returns the range of the bool type. static IntRange forBoolType() { return IntRange(1, true); } /// Returns the range of an opaque value of the given integral type. static IntRange forValueOfType(ASTContext &C, QualType T) { return forValueOfCanonicalType(C, T->getCanonicalTypeInternal().getTypePtr()); } /// Returns the range of an opaque value of a canonical integral type. static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); if (const AtomicType *AT = dyn_cast(T)) T = AT->getValueType().getTypePtr(); // For enum types, use the known bit width of the enumerators. if (const EnumType *ET = dyn_cast(T)) { EnumDecl *Enum = ET->getDecl(); if (!Enum->isCompleteDefinition()) return IntRange(C.getIntWidth(QualType(T, 0)), false); unsigned NumPositive = Enum->getNumPositiveBits(); unsigned NumNegative = Enum->getNumNegativeBits(); if (NumNegative == 0) return IntRange(NumPositive, true/*NonNegative*/); else return IntRange(std::max(NumPositive + 1, NumNegative), false/*NonNegative*/); } const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the "target" range of a canonical integral type, i.e. /// the range of values expressible in the type. /// /// This matches forValueOfCanonicalType except that enums have the /// full range of their type, not the range of their enumerators. static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); if (const AtomicType *AT = dyn_cast(T)) T = AT->getValueType().getTypePtr(); if (const EnumType *ET = dyn_cast(T)) T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr(); const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the supremum of two ranges: i.e. their conservative merge. static IntRange join(IntRange L, IntRange R) { return IntRange(std::max(L.Width, R.Width), L.NonNegative && R.NonNegative); } /// Returns the infinum of two ranges: i.e. their aggressive merge. static IntRange meet(IntRange L, IntRange R) { return IntRange(std::min(L.Width, R.Width), L.NonNegative || R.NonNegative); } }; static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { if (value.isSigned() && value.isNegative()) return IntRange(value.getMinSignedBits(), false); if (value.getBitWidth() > MaxWidth) value = value.trunc(MaxWidth); // isNonNegative() just checks the sign bit without considering // signedness. return IntRange(value.getActiveBits(), true); } static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { if (result.isInt()) return GetValueRange(C, result.getInt(), MaxWidth); if (result.isVector()) { IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth); for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) { IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth); R = IntRange::join(R, El); } return R; } if (result.isComplexInt()) { IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth); IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth); return IntRange::join(R, I); } // This can happen with lossless casts to intptr_t of "based" lvalues. // Assume it might use arbitrary bits. // FIXME: The only reason we need to pass the type in here is to get // the sign right on this one case. It would be nice if APValue // preserved this. assert(result.isLValue() || result.isAddrLabelDiff()); return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType()); } static QualType GetExprType(Expr *E) { QualType Ty = E->getType(); if (const AtomicType *AtomicRHS = Ty->getAs()) Ty = AtomicRHS->getValueType(); return Ty; } /// Pseudo-evaluate the given integer expression, estimating the /// range of values it might take. /// /// \param MaxWidth - the width to which the value will be truncated static IntRange GetExprRange(ASTContext &C, Expr *E, unsigned MaxWidth) { E = E->IgnoreParens(); // Try a full evaluation first. Expr::EvalResult result; if (E->EvaluateAsRValue(result, C)) return GetValueRange(C, result.Val, GetExprType(E), MaxWidth); // I think we only want to look through implicit casts here; if the // user has an explicit widening cast, we should treat the value as // being of the new, wider type. if (ImplicitCastExpr *CE = dyn_cast(E)) { if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue) return GetExprRange(C, CE->getSubExpr(), MaxWidth); IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE)); bool isIntegerCast = (CE->getCastKind() == CK_IntegralCast); // Assume that non-integer casts can span the full range of the type. if (!isIntegerCast) return OutputTypeRange; IntRange SubRange = GetExprRange(C, CE->getSubExpr(), std::min(MaxWidth, OutputTypeRange.Width)); // Bail out if the subexpr's range is as wide as the cast type. if (SubRange.Width >= OutputTypeRange.Width) return OutputTypeRange; // Otherwise, we take the smaller width, and we're non-negative if // either the output type or the subexpr is. return IntRange(SubRange.Width, SubRange.NonNegative || OutputTypeRange.NonNegative); } if (ConditionalOperator *CO = dyn_cast(E)) { // If we can fold the condition, just take that operand. bool CondResult; if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C)) return GetExprRange(C, CondResult ? CO->getTrueExpr() : CO->getFalseExpr(), MaxWidth); // Otherwise, conservatively merge. IntRange L = GetExprRange(C, CO->getTrueExpr(), MaxWidth); IntRange R = GetExprRange(C, CO->getFalseExpr(), MaxWidth); return IntRange::join(L, R); } if (BinaryOperator *BO = dyn_cast(E)) { switch (BO->getOpcode()) { // Boolean-valued operations are single-bit and positive. case BO_LAnd: case BO_LOr: case BO_LT: case BO_GT: case BO_LE: case BO_GE: case BO_EQ: case BO_NE: return IntRange::forBoolType(); // The type of the assignments is the type of the LHS, so the RHS // is not necessarily the same type. case BO_MulAssign: case BO_DivAssign: case BO_RemAssign: case BO_AddAssign: case BO_SubAssign: case BO_XorAssign: case BO_OrAssign: // TODO: bitfields? return IntRange::forValueOfType(C, GetExprType(E)); // Simple assignments just pass through the RHS, which will have // been coerced to the LHS type. case BO_Assign: // TODO: bitfields? return GetExprRange(C, BO->getRHS(), MaxWidth); // Operations with opaque sources are black-listed. case BO_PtrMemD: case BO_PtrMemI: return IntRange::forValueOfType(C, GetExprType(E)); // Bitwise-and uses the *infinum* of the two source ranges. case BO_And: case BO_AndAssign: return IntRange::meet(GetExprRange(C, BO->getLHS(), MaxWidth), GetExprRange(C, BO->getRHS(), MaxWidth)); // Left shift gets black-listed based on a judgement call. case BO_Shl: // ...except that we want to treat '1 << (blah)' as logically // positive. It's an important idiom. if (IntegerLiteral *I = dyn_cast(BO->getLHS()->IgnoreParenCasts())) { if (I->getValue() == 1) { IntRange R = IntRange::forValueOfType(C, GetExprType(E)); return IntRange(R.Width, /*NonNegative*/ true); } } // fallthrough case BO_ShlAssign: return IntRange::forValueOfType(C, GetExprType(E)); // Right shift by a constant can narrow its left argument. case BO_Shr: case BO_ShrAssign: { IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); // If the shift amount is a positive constant, drop the width by // that much. llvm::APSInt shift; if (BO->getRHS()->isIntegerConstantExpr(shift, C) && shift.isNonNegative()) { unsigned zext = shift.getZExtValue(); if (zext >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width -= zext; } return L; } // Comma acts as its right operand. case BO_Comma: return GetExprRange(C, BO->getRHS(), MaxWidth); // Black-list pointer subtractions. case BO_Sub: if (BO->getLHS()->getType()->isPointerType()) return IntRange::forValueOfType(C, GetExprType(E)); break; // The width of a division result is mostly determined by the size // of the LHS. case BO_Div: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); // If the divisor is constant, use that. llvm::APSInt divisor; if (BO->getRHS()->isIntegerConstantExpr(divisor, C)) { unsigned log2 = divisor.logBase2(); // floor(log_2(divisor)) if (log2 >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width = std::min(L.Width - log2, MaxWidth); return L; } // Otherwise, just use the LHS's width. IntRange R = GetExprRange(C, BO->getRHS(), opWidth); return IntRange(L.Width, L.NonNegative && R.NonNegative); } // The result of a remainder can't be larger than the result of // either side. case BO_Rem: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); IntRange R = GetExprRange(C, BO->getRHS(), opWidth); IntRange meet = IntRange::meet(L, R); meet.Width = std::min(meet.Width, MaxWidth); return meet; } // The default behavior is okay for these. case BO_Mul: case BO_Add: case BO_Xor: case BO_Or: break; } // The default case is to treat the operation as if it were closed // on the narrowest type that encompasses both operands. IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); IntRange R = GetExprRange(C, BO->getRHS(), MaxWidth); return IntRange::join(L, R); } if (UnaryOperator *UO = dyn_cast(E)) { switch (UO->getOpcode()) { // Boolean-valued operations are white-listed. case UO_LNot: return IntRange::forBoolType(); // Operations with opaque sources are black-listed. case UO_Deref: case UO_AddrOf: // should be impossible return IntRange::forValueOfType(C, GetExprType(E)); default: return GetExprRange(C, UO->getSubExpr(), MaxWidth); } } if (OpaqueValueExpr *OVE = dyn_cast(E)) return GetExprRange(C, OVE->getSourceExpr(), MaxWidth); if (FieldDecl *BitField = E->getSourceBitField()) return IntRange(BitField->getBitWidthValue(C), BitField->getType()->isUnsignedIntegerOrEnumerationType()); return IntRange::forValueOfType(C, GetExprType(E)); } static IntRange GetExprRange(ASTContext &C, Expr *E) { return GetExprRange(C, E, C.getIntWidth(GetExprType(E))); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { llvm::APFloat truncated = value; bool ignored; truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored); truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored); return truncated.bitwiseIsEqual(value); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. /// /// The value might be a vector of floats (or a complex number). static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { if (value.isFloat()) return IsSameFloatAfterCast(value.getFloat(), Src, Tgt); if (value.isVector()) { for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i) if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt)) return false; return true; } assert(value.isComplexFloat()); return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) && IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt)); } static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); static bool IsZero(Sema &S, Expr *E) { // Suppress cases where we are comparing against an enum constant. if (const DeclRefExpr *DR = dyn_cast(E->IgnoreParenImpCasts())) if (isa(DR->getDecl())) return false; // Suppress cases where the '0' value is expanded from a macro. if (E->getLocStart().isMacroID()) return false; llvm::APSInt Value; return E->isIntegerConstantExpr(Value, S.Context) && Value == 0; } static bool HasEnumType(Expr *E) { // Strip off implicit integral promotions. while (ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() != CK_IntegralCast && ICE->getCastKind() != CK_NoOp) break; E = ICE->getSubExpr(); } return E->getType()->isEnumeralType(); } static void CheckTrivialUnsignedComparison(Sema &S, BinaryOperator *E) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; BinaryOperatorKind op = E->getOpcode(); if (E->isValueDependent()) return; if (op == BO_LT && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << "< 0" << "false" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GE && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << ">= 0" << "true" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GT && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 >" << "false" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_LE && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 <=" << "true" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } } static void DiagnoseOutOfRangeComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, llvm::APSInt Value, bool RhsConstant) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; // TODO: Investigate using GetExprRange() to get tighter bounds // on the bit ranges. QualType OtherT = Other->getType(); if (const AtomicType *AT = dyn_cast(OtherT)) OtherT = AT->getValueType(); IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT); unsigned OtherWidth = OtherRange.Width; bool OtherIsBooleanType = Other->isKnownToHaveBooleanValue(); // 0 values are handled later by CheckTrivialUnsignedComparison(). if ((Value == 0) && (!OtherIsBooleanType)) return; BinaryOperatorKind op = E->getOpcode(); bool IsTrue = true; // Used for diagnostic printout. enum { LiteralConstant = 0, CXXBoolLiteralTrue, CXXBoolLiteralFalse } LiteralOrBoolConstant = LiteralConstant; if (!OtherIsBooleanType) { QualType ConstantT = Constant->getType(); QualType CommonT = E->getLHS()->getType(); if (S.Context.hasSameUnqualifiedType(OtherT, ConstantT)) return; assert((OtherT->isIntegerType() && ConstantT->isIntegerType()) && "comparison with non-integer type"); bool ConstantSigned = ConstantT->isSignedIntegerType(); bool CommonSigned = CommonT->isSignedIntegerType(); bool EqualityOnly = false; if (CommonSigned) { // The common type is signed, therefore no signed to unsigned conversion. if (!OtherRange.NonNegative) { // Check that the constant is representable in type OtherT. if (ConstantSigned) { if (OtherWidth >= Value.getMinSignedBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits() + 1) return; } } else { // !OtherSigned // Check that the constant is representable in type OtherT. // Negative values are out of range. if (ConstantSigned) { if (Value.isNonNegative() && OtherWidth >= Value.getActiveBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits()) return; } } } else { // !CommonSigned if (OtherRange.NonNegative) { if (OtherWidth >= Value.getActiveBits()) return; } else { // OtherSigned assert(!ConstantSigned && "Two signed types converted to unsigned types."); // Check to see if the constant is representable in OtherT. if (OtherWidth > Value.getActiveBits()) return; // Check to see if the constant is equivalent to a negative value // cast to CommonT. if (S.Context.getIntWidth(ConstantT) == S.Context.getIntWidth(CommonT) && Value.isNegative() && Value.getMinSignedBits() <= OtherWidth) return; // The constant value rests between values that OtherT can represent // after conversion. Relational comparison still works, but equality // comparisons will be tautological. EqualityOnly = true; } } bool PositiveConstant = !ConstantSigned || Value.isNonNegative(); if (op == BO_EQ || op == BO_NE) { IsTrue = op == BO_NE; } else if (EqualityOnly) { return; } else if (RhsConstant) { if (op == BO_GT || op == BO_GE) IsTrue = !PositiveConstant; else // op == BO_LT || op == BO_LE IsTrue = PositiveConstant; } else { if (op == BO_LT || op == BO_LE) IsTrue = !PositiveConstant; else // op == BO_GT || op == BO_GE IsTrue = PositiveConstant; } } else { // Other isKnownToHaveBooleanValue enum CompareBoolWithConstantResult { AFals, ATrue, Unkwn }; enum ConstantValue { LT_Zero, Zero, One, GT_One, SizeOfConstVal }; enum ConstantSide { Lhs, Rhs, SizeOfConstSides }; static const struct LinkedConditions { CompareBoolWithConstantResult BO_LT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GT_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_LE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_GE_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_EQ_OP[SizeOfConstSides][SizeOfConstVal]; CompareBoolWithConstantResult BO_NE_OP[SizeOfConstSides][SizeOfConstVal]; } TruthTable = { // Constant on LHS. | Constant on RHS. | // LT_Zero| Zero | One |GT_One| LT_Zero| Zero | One |GT_One| { { ATrue, Unkwn, AFals, AFals }, { AFals, AFals, Unkwn, ATrue } }, { { AFals, AFals, Unkwn, ATrue }, { ATrue, Unkwn, AFals, AFals } }, { { ATrue, ATrue, Unkwn, AFals }, { AFals, Unkwn, ATrue, ATrue } }, { { AFals, Unkwn, ATrue, ATrue }, { ATrue, ATrue, Unkwn, AFals } }, { { AFals, Unkwn, Unkwn, AFals }, { AFals, Unkwn, Unkwn, AFals } }, { { ATrue, Unkwn, Unkwn, ATrue }, { ATrue, Unkwn, Unkwn, ATrue } } }; bool ConstantIsBoolLiteral = isa(Constant); enum ConstantValue ConstVal = Zero; if (Value.isUnsigned() || Value.isNonNegative()) { if (Value == 0) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralFalse : LiteralConstant; ConstVal = Zero; } else if (Value == 1) { LiteralOrBoolConstant = ConstantIsBoolLiteral ? CXXBoolLiteralTrue : LiteralConstant; ConstVal = One; } else { LiteralOrBoolConstant = LiteralConstant; ConstVal = GT_One; } } else { ConstVal = LT_Zero; } CompareBoolWithConstantResult CmpRes; switch (op) { case BO_LT: CmpRes = TruthTable.BO_LT_OP[RhsConstant][ConstVal]; break; case BO_GT: CmpRes = TruthTable.BO_GT_OP[RhsConstant][ConstVal]; break; case BO_LE: CmpRes = TruthTable.BO_LE_OP[RhsConstant][ConstVal]; break; case BO_GE: CmpRes = TruthTable.BO_GE_OP[RhsConstant][ConstVal]; break; case BO_EQ: CmpRes = TruthTable.BO_EQ_OP[RhsConstant][ConstVal]; break; case BO_NE: CmpRes = TruthTable.BO_NE_OP[RhsConstant][ConstVal]; break; default: CmpRes = Unkwn; break; } if (CmpRes == AFals) { IsTrue = false; } else if (CmpRes == ATrue) { IsTrue = true; } else { return; } } // If this is a comparison to an enum constant, include that // constant in the diagnostic. const EnumConstantDecl *ED = nullptr; if (const DeclRefExpr *DR = dyn_cast(Constant)) ED = dyn_cast(DR->getDecl()); SmallString<64> PrettySourceValue; llvm::raw_svector_ostream OS(PrettySourceValue); if (ED) OS << '\'' << *ED << "' (" << Value << ")"; else OS << Value; S.DiagRuntimeBehavior( E->getOperatorLoc(), E, S.PDiag(diag::warn_out_of_range_compare) << OS.str() << LiteralOrBoolConstant << OtherT << (OtherIsBooleanType && !OtherT->isBooleanType()) << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); } /// Analyze the operands of the given comparison. Implements the /// fallback case from AnalyzeComparison. static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// \brief Implements -Wsign-compare. /// /// \param E the binary operator to check for warnings static void AnalyzeComparison(Sema &S, BinaryOperator *E) { // The type the comparison is being performed in. QualType T = E->getLHS()->getType(); assert(S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType()) && "comparison with mismatched types"); if (E->isValueDependent()) return AnalyzeImpConvsInComparison(S, E); Expr *LHS = E->getLHS()->IgnoreParenImpCasts(); Expr *RHS = E->getRHS()->IgnoreParenImpCasts(); bool IsComparisonConstant = false; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (T->isIntegralType(S.Context)) { llvm::APSInt RHSValue; bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); llvm::APSInt LHSValue; bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); if (IsRHSIntegralLiteral && !IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, RHS, LHS, RHSValue, true); else if (!IsRHSIntegralLiteral && IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, LHS, RHS, LHSValue, false); else IsComparisonConstant = (IsRHSIntegralLiteral && IsLHSIntegralLiteral); } else if (!T->hasUnsignedIntegerRepresentation()) IsComparisonConstant = E->isIntegerConstantExpr(S.Context); // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. // // We also don't care about value-dependent expressions or expressions // whose result is a constant. if (!T->hasUnsignedIntegerRepresentation() || IsComparisonConstant) return AnalyzeImpConvsInComparison(S, E); // Check to see if one of the (unmodified) operands is of different // signedness. Expr *signedOperand, *unsignedOperand; if (LHS->getType()->hasSignedIntegerRepresentation()) { assert(!RHS->getType()->hasSignedIntegerRepresentation() && "unsigned comparison between two signed integer expressions?"); signedOperand = LHS; unsignedOperand = RHS; } else if (RHS->getType()->hasSignedIntegerRepresentation()) { signedOperand = RHS; unsignedOperand = LHS; } else { CheckTrivialUnsignedComparison(S, E); return AnalyzeImpConvsInComparison(S, E); } // Otherwise, calculate the effective range of the signed operand. IntRange signedRange = GetExprRange(S.Context, signedOperand); // Go ahead and analyze implicit conversions in the operands. Note // that we skip the implicit conversions on both sides. AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc()); AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc()); // If the signed range is non-negative, -Wsign-compare won't fire, // but we should still check for comparisons which are always true // or false. if (signedRange.NonNegative) return CheckTrivialUnsignedComparison(S, E); // For (in)equality comparisons, if the unsigned operand is a // constant which cannot collide with a overflowed signed operand, // then reinterpreting the signed operand as unsigned will not // change the result of the comparison. if (E->isEqualityOp()) { unsigned comparisonWidth = S.Context.getIntWidth(T); IntRange unsignedRange = GetExprRange(S.Context, unsignedOperand); // We should never be unable to prove that the unsigned operand is // non-negative. assert(unsignedRange.NonNegative && "unsigned range includes negative?"); if (unsignedRange.Width < comparisonWidth) return; } S.DiagRuntimeBehavior(E->getOperatorLoc(), E, S.PDiag(diag::warn_mixed_sign_comparison) << LHS->getType() << RHS->getType() << LHS->getSourceRange() << RHS->getSourceRange()); } /// Analyzes an attempt to assign the given value to a bitfield. /// /// Returns true if there was something fishy about the attempt. static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { assert(Bitfield->isBitField()); if (Bitfield->isInvalidDecl()) return false; // White-list bool bitfields. if (Bitfield->getType()->isBooleanType()) return false; // Ignore value- or type-dependent expressions. if (Bitfield->getBitWidth()->isValueDependent() || Bitfield->getBitWidth()->isTypeDependent() || Init->isValueDependent() || Init->isTypeDependent()) return false; Expr *OriginalInit = Init->IgnoreParenImpCasts(); llvm::APSInt Value; if (!OriginalInit->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) return false; unsigned OriginalWidth = Value.getBitWidth(); unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); if (OriginalWidth <= FieldWidth) return false; // Compute the value which the bitfield will contain. llvm::APSInt TruncatedValue = Value.trunc(FieldWidth); TruncatedValue.setIsSigned(Bitfield->getType()->isSignedIntegerType()); // Check whether the stored value is equal to the original value. TruncatedValue = TruncatedValue.extend(OriginalWidth); if (llvm::APSInt::isSameValue(Value, TruncatedValue)) return false; // Special-case bitfields of width 1: booleans are naturally 0/1, and // therefore don't strictly fit into a signed bitfield of width 1. if (FieldWidth == 1 && Value == 1) return false; std::string PrettyValue = Value.toString(10); std::string PrettyTrunc = TruncatedValue.toString(10); S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant) << PrettyValue << PrettyTrunc << OriginalInit->getType() << Init->getSourceRange(); return true; } /// Analyze the given simple or compound assignment for warning-worthy /// operations. static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { // Just recurse on the LHS. AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); // We want to recurse on the RHS as normal unless we're assigning to // a bitfield. if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) { if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(), E->getOperatorLoc())) { // Recurse, ignoring any implicit conversions on the RHS. return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(), E->getOperatorLoc()); } } AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { if (pruneControlFlow) { S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext)); return; } S.Diag(E->getExprLoc(), diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow); } /// Diagnose an implicit cast from a literal expression. Does not warn when the /// cast wouldn't lose information. void DiagnoseFloatingLiteralImpCast(Sema &S, FloatingLiteral *FL, QualType T, SourceLocation CContext) { // Try to convert the literal exactly to an integer. If we can, don't warn. bool isExact = false; const llvm::APFloat &Value = FL->getValue(); llvm::APSInt IntegerValue(S.Context.getIntWidth(T), T->hasUnsignedIntegerRepresentation()); if (Value.convertToInteger(IntegerValue, llvm::APFloat::rmTowardZero, &isExact) == llvm::APFloat::opOK && isExact) return; // FIXME: Force the precision of the source value down so we don't print // digits which are usually useless (we don't really care here if we // truncate a digit by accident in edge cases). Ideally, APFloat::toString // would automatically print the shortest representation, but it's a bit // tricky to implement. SmallString<16> PrettySourceValue; unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics()); precision = (precision * 59 + 195) / 196; Value.toString(PrettySourceValue, precision); SmallString<16> PrettyTargetValue; if (T->isSpecificBuiltinType(BuiltinType::Bool)) PrettyTargetValue = IntegerValue == 0 ? "false" : "true"; else IntegerValue.toString(PrettyTargetValue); S.Diag(FL->getExprLoc(), diag::warn_impcast_literal_float_to_integer) << FL->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << FL->getSourceRange() << SourceRange(CContext); } std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { if (!Range.Width) return "0"; llvm::APSInt ValueInRange = Value; ValueInRange.setIsSigned(!Range.NonNegative); ValueInRange = ValueInRange.trunc(Range.Width); return ValueInRange.toString(10); } static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { if (!isa(Ex)) return false; Expr *InnerE = Ex->IgnoreParenImpCasts(); const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr(); const Type *Source = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (Target->isDependentType()) return false; const BuiltinType *FloatCandidateBT = dyn_cast(ToBool ? Source : Target); const Type *BoolCandidateType = ToBool ? Target : Source; return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) && FloatCandidateBT && (FloatCandidateBT->isFloatingPoint())); } void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { unsigned NumArgs = TheCall->getNumArgs(); for (unsigned i = 0; i < NumArgs; ++i) { Expr *CurrA = TheCall->getArg(i); if (!IsImplicitBoolFloatConversion(S, CurrA, true)) continue; bool IsSwapped = ((i > 0) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false)); IsSwapped |= ((i < (NumArgs - 1)) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false)); if (IsSwapped) { // Warn on this floating-point to bool conversion. DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(), CurrA->getType(), CC, diag::warn_impcast_floating_point_to_bool); } } } void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = nullptr) { if (E->isTypeDependent() || E->isValueDependent()) return; const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr(); const Type *Target = S.Context.getCanonicalType(T).getTypePtr(); if (Source == Target) return; if (Target->isDependentType()) return; // If the conversion context location is invalid don't complain. We also // don't want to emit a warning if the issue occurs from the expansion of // a system macro. The problem is that 'getSpellingLoc()' is slow, so we // delay this check as long as possible. Once we detect we are in that // scenario, we just return. if (CC.isInvalid()) return; // Diagnose implicit casts to bool. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) { if (isa(E)) // Warn on string literal to bool. Checks for string literals in logical // and expressions, for instance, assert(0 && "error here"), are // prevented by a check in AnalyzeImplicitConversions(). return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_string_literal_to_bool); if (isa(E) || isa(E) || isa(E) || isa(E)) { // This covers the literal expressions that evaluate to Objective-C // objects. return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_objective_c_literal_to_bool); } if (Source->isPointerType() || Source->canDecayToPointerType()) { // Warn on pointer to bool conversion that is always true. S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, /*IsEqual*/ false, SourceRange(CC)); } } // Strip vector types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar); } // If the vector cast is cast between two vectors of the same size, it is // a bitcast, not a conversion. if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target)) return; Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } if (auto VecTy = dyn_cast(Target)) Target = VecTy->getElementType().getTypePtr(); // Strip complex types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_complex_scalar); } Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } const BuiltinType *SourceBT = dyn_cast(Source); const BuiltinType *TargetBT = dyn_cast(Target); // If the source is floating point... if (SourceBT && SourceBT->isFloatingPoint()) { // ...and the target is floating point... if (TargetBT && TargetBT->isFloatingPoint()) { // ...then warn if we're dropping FP rank. // Builtin FP kinds are ordered by increasing FP rank. if (SourceBT->getKind() > TargetBT->getKind()) { // Don't warn about float constants that are precisely // representable in the target type. Expr::EvalResult result; if (E->EvaluateAsRValue(result, S.Context)) { // Value might be a float, a float vector, or a float complex. if (IsSameFloatAfterCast(result.Val, S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)), S.Context.getFloatTypeSemantics(QualType(SourceBT, 0)))) return; } if (S.SourceMgr.isInSystemMacro(CC)) return; DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision); } return; } // If the target is integral, always warn. if (TargetBT && TargetBT->isInteger()) { if (S.SourceMgr.isInSystemMacro(CC)) return; Expr *InnerE = E->IgnoreParenImpCasts(); // We also want to warn on, e.g., "int i = -1.234" if (UnaryOperator *UOp = dyn_cast(InnerE)) if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); if (FloatingLiteral *FL = dyn_cast(InnerE)) { DiagnoseFloatingLiteralImpCast(S, FL, T, CC); } else { DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_integer); } } // If the target is bool, warn if expr is a function or method call. if (Target->isSpecificBuiltinType(BuiltinType::Bool) && isa(E)) { // Check last argument of function call to see if it is an // implicit cast from a type matching the type the result // is being cast to. CallExpr *CEx = cast(E); unsigned NumArgs = CEx->getNumArgs(); if (NumArgs > 0) { Expr *LastA = CEx->getArg(NumArgs - 1); Expr *InnerE = LastA->IgnoreParenImpCasts(); const Type *InnerType = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (isa(LastA) && (InnerType == Target)) { // Warn on this floating-point to bool conversion DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_floating_point_to_bool); } } } return; } if ((E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) == Expr::NPCK_GNUNull) && !Target->isAnyPointerType() && !Target->isBlockPointerType() && !Target->isMemberPointerType() && Target->isScalarType() && !Target->isNullPtrType()) { SourceLocation Loc = E->getSourceRange().getBegin(); if (Loc.isMacroID()) Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; if (!Loc.isMacroID() || CC.isMacroID()) S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) << T << clang::SourceRange(CC) << FixItHint::CreateReplacement(Loc, S.getFixItZeroLiteralForType(T, Loc)); } if (!Source->isIntegerType() || !Target->isIntegerType()) return; // TODO: remove this early return once the false positives for constant->bool // in templates, macros, etc, are reduced or removed. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) return; IntRange SourceRange = GetExprRange(S.Context, E); IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target); if (SourceRange.Width > TargetRange.Width) { // If the source is a constant, use a default-on diagnostic. // TODO: this should happen for bitfield stores, too. llvm::APSInt Value(32); if (E->isIntegerConstantExpr(Value, S.Context)) { if (S.SourceMgr.isInSystemMacro(CC)) return; std::string PrettySourceValue = Value.toString(10); std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag::warn_impcast_integer_precision_constant) << PrettySourceValue << PrettyTargetValue << E->getType() << T << E->getSourceRange() << clang::SourceRange(CC)); return; } // People want to build with -Wshorten-64-to-32 and not -Wconversion. if (S.SourceMgr.isInSystemMacro(CC)) return; if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64) return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32, /* pruneControlFlow */ true); return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision); } if ((TargetRange.NonNegative && !SourceRange.NonNegative) || (!TargetRange.NonNegative && SourceRange.NonNegative && SourceRange.Width == TargetRange.Width)) { if (S.SourceMgr.isInSystemMacro(CC)) return; unsigned DiagID = diag::warn_impcast_integer_sign; // Traditionally, gcc has warned about this under -Wsign-compare. // We also want to warn about it in -Wconversion. // So if -Wconversion is off, use a completely identical diagnostic // in the sign-compare group. // The conditional-checking code will if (ICContext) { DiagID = diag::warn_impcast_integer_sign_conditional; *ICContext = true; } return DiagnoseImpCast(S, E, T, CC, DiagID); } // Diagnose conversions between different enumeration types. // In C, we pretend that the type of an EnumConstantDecl is its enumeration // type, to give us better diagnostics. QualType SourceType = E->getType(); if (!S.getLangOpts().CPlusPlus) { if (DeclRefExpr *DRE = dyn_cast(E)) if (EnumConstantDecl *ECD = dyn_cast(DRE->getDecl())) { EnumDecl *Enum = cast(ECD->getDeclContext()); SourceType = S.Context.getTypeDeclType(Enum); Source = S.Context.getCanonicalType(SourceType).getTypePtr(); } } if (const EnumType *SourceEnum = Source->getAs()) if (const EnumType *TargetEnum = Target->getAs()) if (SourceEnum->getDecl()->hasNameForLinkage() && TargetEnum->getDecl()->hasNameForLinkage() && SourceEnum != TargetEnum) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, SourceType, T, CC, diag::warn_impcast_different_enum_types); } return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { E = E->IgnoreParenImpCasts(); if (isa(E)) return CheckConditionalOperator(S, cast(E), CC, T); AnalyzeImplicitConversions(S, E, CC); if (E->getType() != T) return CheckImplicitConversion(S, E, T, CC, &ICContext); return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { AnalyzeImplicitConversions(S, E->getCond(), E->getQuestionLoc()); bool Suspicious = false; CheckConditionalOperand(S, E->getTrueExpr(), T, CC, Suspicious); CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious); // If -Wconversion would have warned about either of the candidates // for a signedness conversion to the context type... if (!Suspicious) return; // ...but it's currently ignored... if (!S.Diags.isIgnored(diag::warn_impcast_integer_sign_conditional, CC)) return; // ...then check whether it would have warned about either of the // candidates for a signedness conversion to the condition type. if (E->getType() == T) return; Suspicious = false; CheckImplicitConversion(S, E->getTrueExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); if (!Suspicious) CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); } /// AnalyzeImplicitConversions - Find and report any interesting /// implicit conversions in the given expression. There are a couple /// of competing diagnostics here, -Wconversion and -Wsign-compare. void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { QualType T = OrigE->getType(); Expr *E = OrigE->IgnoreParenImpCasts(); if (E->isTypeDependent() || E->isValueDependent()) return; // For conditional operators, we analyze the arguments as if they // were being fed directly into the output. if (isa(E)) { ConditionalOperator *CO = cast(E); CheckConditionalOperator(S, CO, CC, T); return; } // Check implicit argument conversions for function calls. if (CallExpr *Call = dyn_cast(E)) CheckImplicitArgumentConversions(S, Call, CC); // Go ahead and check any implicit conversions we might have skipped. // The non-canonical typecheck is just an optimization; // CheckImplicitConversion will filter out dead implicit conversions. if (E->getType() != T) CheckImplicitConversion(S, E, T, CC); // Now continue drilling into this expression. if (PseudoObjectExpr * POE = dyn_cast(E)) { if (POE->getResultExpr()) E = POE->getResultExpr(); } if (const OpaqueValueExpr *OVE = dyn_cast(E)) return AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC); // Skip past explicit casts. if (isa(E)) { E = cast(E)->getSubExpr()->IgnoreParenImpCasts(); return AnalyzeImplicitConversions(S, E, CC); } if (BinaryOperator *BO = dyn_cast(E)) { // Do a somewhat different check with comparison operators. if (BO->isComparisonOp()) return AnalyzeComparison(S, BO); // And with simple assignments. if (BO->getOpcode() == BO_Assign) return AnalyzeAssignment(S, BO); } // These break the otherwise-useful invariant below. Fortunately, // we don't really need to recurse into them, because any internal // expressions should have been analyzed already when they were // built into statements. if (isa(E)) return; // Don't descend into unevaluated contexts. if (isa(E)) return; // Now just recurse over the expression's children. CC = E->getExprLoc(); BinaryOperator *BO = dyn_cast(E); bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd; for (Stmt::child_range I = E->children(); I; ++I) { Expr *ChildExpr = dyn_cast_or_null(*I); if (!ChildExpr) continue; if (IsLogicalAndOperator && isa(ChildExpr->IgnoreParenImpCasts())) // Ignore checking string literals that are in logical and operators. // This is a common pattern for asserts. continue; AnalyzeImplicitConversions(S, ChildExpr, CC); } } } // end anonymous namespace enum { AddressOf, FunctionPointer, ArrayPointer }; // Helper function for Sema::DiagnoseAlwaysNonNullPointer. // Returns true when emitting a warning about taking the address of a reference. static bool CheckForReference(Sema &SemaRef, const Expr *E, PartialDiagnostic PD) { E = E->IgnoreParenImpCasts(); const FunctionDecl *FD = nullptr; if (const DeclRefExpr *DRE = dyn_cast(E)) { if (!DRE->getDecl()->getType()->isReferenceType()) return false; } else if (const MemberExpr *M = dyn_cast(E)) { if (!M->getMemberDecl()->getType()->isReferenceType()) return false; } else if (const CallExpr *Call = dyn_cast(E)) { if (!Call->getCallReturnType()->isReferenceType()) return false; FD = Call->getDirectCallee(); } else { return false; } SemaRef.Diag(E->getExprLoc(), PD); // If possible, point to location of function. if (FD) { SemaRef.Diag(FD->getLocation(), diag::note_reference_is_return_value) << FD; } return true; } // Returns true if the SourceLocation is expanded from any macro body. // Returns false if the SourceLocation is invalid, is from not in a macro // expansion, or is from expanded from a top-level macro argument. static bool IsInAnyMacroBody(const SourceManager &SM, SourceLocation Loc) { if (Loc.isInvalid()) return false; while (Loc.isMacroID()) { if (SM.isMacroBodyExpansion(Loc)) return true; Loc = SM.getImmediateMacroCallerLoc(Loc); } return false; } /// \brief Diagnose pointers that are always non-null. /// \param E the expression containing the pointer /// \param NullKind NPCK_NotNull if E is a cast to bool, otherwise, E is /// compared to a null pointer /// \param IsEqual True when the comparison is equal to a null pointer /// \param Range Extra SourceRange to highlight in the diagnostic void Sema::DiagnoseAlwaysNonNullPointer(Expr *E, Expr::NullPointerConstantKind NullKind, bool IsEqual, SourceRange Range) { if (!E) return; // Don't warn inside macros. if (E->getExprLoc().isMacroID()) { const SourceManager &SM = getSourceManager(); if (IsInAnyMacroBody(SM, E->getExprLoc()) || IsInAnyMacroBody(SM, Range.getBegin())) return; } E = E->IgnoreImpCasts(); const bool IsCompare = NullKind != Expr::NPCK_NotNull; if (isa(E)) { unsigned DiagID = IsCompare ? diag::warn_this_null_compare : diag::warn_this_bool_conversion; Diag(E->getExprLoc(), DiagID) << E->getSourceRange() << Range << IsEqual; return; } bool IsAddressOf = false; if (UnaryOperator *UO = dyn_cast(E)) { if (UO->getOpcode() != UO_AddrOf) return; IsAddressOf = true; E = UO->getSubExpr(); } if (IsAddressOf) { unsigned DiagID = IsCompare ? diag::warn_address_of_reference_null_compare : diag::warn_address_of_reference_bool_conversion; PartialDiagnostic PD = PDiag(DiagID) << E->getSourceRange() << Range << IsEqual; if (CheckForReference(*this, E, PD)) { return; } } // Expect to find a single Decl. Skip anything more complicated. ValueDecl *D = nullptr; if (DeclRefExpr *R = dyn_cast(E)) { D = R->getDecl(); } else if (MemberExpr *M = dyn_cast(E)) { D = M->getMemberDecl(); } // Weak Decls can be null. if (!D || D->isWeak()) return; QualType T = D->getType(); const bool IsArray = T->isArrayType(); const bool IsFunction = T->isFunctionType(); // Address of function is used to silence the function warning. if (IsAddressOf && IsFunction) { return; } // Found nothing. if (!IsAddressOf && !IsFunction && !IsArray) return; // Pretty print the expression for the diagnostic. std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, nullptr, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare : diag::warn_impcast_pointer_to_bool; unsigned DiagType; if (IsAddressOf) DiagType = AddressOf; else if (IsFunction) DiagType = FunctionPointer; else if (IsArray) DiagType = ArrayPointer; else llvm_unreachable("Could not determine diagnostic."); Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange() << Range << IsEqual; if (!IsFunction) return; // Suggest '&' to silence the function warning. Diag(E->getExprLoc(), diag::note_function_warning_silence) << FixItHint::CreateInsertion(E->getLocStart(), "&"); // Check to see if '()' fixit should be emitted. QualType ReturnType; UnresolvedSet<4> NonTemplateOverloads; tryExprAsCall(*E, ReturnType, NonTemplateOverloads); if (ReturnType.isNull()) return; if (IsCompare) { // There are two cases here. If there is null constant, the only suggest // for a pointer return type. If the null is 0, then suggest if the return // type is a pointer or an integer type. if (!ReturnType->isPointerType()) { if (NullKind == Expr::NPCK_ZeroExpression || NullKind == Expr::NPCK_ZeroLiteral) { if (!ReturnType->isIntegerType()) return; } else { return; } } } else { // !IsCompare // For function to bool, only suggest if the function pointer has bool // return type. if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) return; } Diag(E->getExprLoc(), diag::note_function_to_function_call) << FixItHint::CreateInsertion(getLocForEndOfToken(E->getLocEnd()), "()"); } /// Diagnoses "dangerous" implicit conversions within the given /// expression (which is a full expression). Implements -Wconversion /// and -Wsign-compare. /// /// \param CC the "context" location of the implicit conversion, i.e. /// the most location of the syntactic entity requiring the implicit /// conversion void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) { // Don't diagnose in unevaluated contexts. if (isUnevaluatedContext()) return; // Don't diagnose for value- or type-dependent expressions. if (E->isTypeDependent() || E->isValueDependent()) return; // Check for array bounds violations in cases where the check isn't triggered // elsewhere for other Expr types (like BinaryOperators), e.g. when an // ArraySubscriptExpr is on the RHS of a variable initialization. CheckArrayAccess(E); // This is not the right CC for (e.g.) a variable initialization. AnalyzeImplicitConversions(*this, E, CC); } /// Diagnose when expression is an integer constant expression and its evaluation /// results in integer overflow void Sema::CheckForIntOverflow (Expr *E) { if (isa(E->IgnoreParens())) E->EvaluateForOverflow(Context); } namespace { /// \brief Visitor for expressions which looks for unsequenced operations on the /// same object. class SequenceChecker : public EvaluatedExprVisitor { typedef EvaluatedExprVisitor Base; /// \brief A tree of sequenced regions within an expression. Two regions are /// unsequenced if one is an ancestor or a descendent of the other. When we /// finish processing an expression with sequencing, such as a comma /// expression, we fold its tree nodes into its parent, since they are /// unsequenced with respect to nodes we will visit later. class SequenceTree { struct Value { explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {} unsigned Parent : 31; bool Merged : 1; }; SmallVector Values; public: /// \brief A region within an expression which may be sequenced with respect /// to some other region. class Seq { explicit Seq(unsigned N) : Index(N) {} unsigned Index; friend class SequenceTree; public: Seq() : Index(0) {} }; SequenceTree() { Values.push_back(Value(0)); } Seq root() const { return Seq(0); } /// \brief Create a new sequence of operations, which is an unsequenced /// subset of \p Parent. This sequence of operations is sequenced with /// respect to other children of \p Parent. Seq allocate(Seq Parent) { Values.push_back(Value(Parent.Index)); return Seq(Values.size() - 1); } /// \brief Merge a sequence of operations into its parent. void merge(Seq S) { Values[S.Index].Merged = true; } /// \brief Determine whether two operations are unsequenced. This operation /// is asymmetric: \p Cur should be the more recent sequence, and \p Old /// should have been merged into its parent as appropriate. bool isUnsequenced(Seq Cur, Seq Old) { unsigned C = representative(Cur.Index); unsigned Target = representative(Old.Index); while (C >= Target) { if (C == Target) return true; C = Values[C].Parent; } return false; } private: /// \brief Pick a representative for a sequence. unsigned representative(unsigned K) { if (Values[K].Merged) // Perform path compression as we go. return Values[K].Parent = representative(Values[K].Parent); return K; } }; /// An object for which we can track unsequenced uses. typedef NamedDecl *Object; /// Different flavors of object usage which we track. We only track the /// least-sequenced usage of each kind. enum UsageKind { /// A read of an object. Multiple unsequenced reads are OK. UK_Use, /// A modification of an object which is sequenced before the value /// computation of the expression, such as ++n in C++. UK_ModAsValue, /// A modification of an object which is not sequenced before the value /// computation of the expression, such as n++. UK_ModAsSideEffect, UK_Count = UK_ModAsSideEffect + 1 }; struct Usage { Usage() : Use(nullptr), Seq() {} Expr *Use; SequenceTree::Seq Seq; }; struct UsageInfo { UsageInfo() : Diagnosed(false) {} Usage Uses[UK_Count]; /// Have we issued a diagnostic for this variable already? bool Diagnosed; }; typedef llvm::SmallDenseMap UsageInfoMap; Sema &SemaRef; /// Sequenced regions within the expression. SequenceTree Tree; /// Declaration modifications and references which we have seen. UsageInfoMap UsageMap; /// The region we are currently within. SequenceTree::Seq Region; /// Filled in with declarations which were modified as a side-effect /// (that is, post-increment operations). SmallVectorImpl > *ModAsSideEffect; /// Expressions to check later. We defer checking these to reduce /// stack usage. SmallVectorImpl &WorkList; /// RAII object wrapping the visitation of a sequenced subexpression of an /// expression. At the end of this process, the side-effects of the evaluation /// become sequenced with respect to the value computation of the result, so /// we downgrade any UK_ModAsSideEffect within the evaluation to /// UK_ModAsValue. struct SequencedSubexpression { SequencedSubexpression(SequenceChecker &Self) : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) { Self.ModAsSideEffect = &ModAsSideEffect; } ~SequencedSubexpression() { for (unsigned I = 0, E = ModAsSideEffect.size(); I != E; ++I) { UsageInfo &U = Self.UsageMap[ModAsSideEffect[I].first]; U.Uses[UK_ModAsSideEffect] = ModAsSideEffect[I].second; Self.addUsage(U, ModAsSideEffect[I].first, ModAsSideEffect[I].second.Use, UK_ModAsValue); } Self.ModAsSideEffect = OldModAsSideEffect; } SequenceChecker &Self; SmallVector, 4> ModAsSideEffect; SmallVectorImpl > *OldModAsSideEffect; }; /// RAII object wrapping the visitation of a subexpression which we might /// choose to evaluate as a constant. If any subexpression is evaluated and /// found to be non-constant, this allows us to suppress the evaluation of /// the outer expression. class EvaluationTracker { public: EvaluationTracker(SequenceChecker &Self) : Self(Self), Prev(Self.EvalTracker), EvalOK(true) { Self.EvalTracker = this; } ~EvaluationTracker() { Self.EvalTracker = Prev; if (Prev) Prev->EvalOK &= EvalOK; } bool evaluate(const Expr *E, bool &Result) { if (!EvalOK || E->isValueDependent()) return false; EvalOK = E->EvaluateAsBooleanCondition(Result, Self.SemaRef.Context); return EvalOK; } private: SequenceChecker &Self; EvaluationTracker *Prev; bool EvalOK; } *EvalTracker; /// \brief Find the object which is produced by the specified expression, /// if any. Object getObject(Expr *E, bool Mod) const { E = E->IgnoreParenCasts(); if (UnaryOperator *UO = dyn_cast(E)) { if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec)) return getObject(UO->getSubExpr(), Mod); } else if (BinaryOperator *BO = dyn_cast(E)) { if (BO->getOpcode() == BO_Comma) return getObject(BO->getRHS(), Mod); if (Mod && BO->isAssignmentOp()) return getObject(BO->getLHS(), Mod); } else if (MemberExpr *ME = dyn_cast(E)) { // FIXME: Check for more interesting cases, like "x.n = ++x.n". if (isa(ME->getBase()->IgnoreParenCasts())) return ME->getMemberDecl(); } else if (DeclRefExpr *DRE = dyn_cast(E)) // FIXME: If this is a reference, map through to its value. return DRE->getDecl(); return nullptr; } /// \brief Note that an object was modified or used by an expression. void addUsage(UsageInfo &UI, Object O, Expr *Ref, UsageKind UK) { Usage &U = UI.Uses[UK]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) { if (UK == UK_ModAsSideEffect && ModAsSideEffect) ModAsSideEffect->push_back(std::make_pair(O, U)); U.Use = Ref; U.Seq = Region; } } /// \brief Check whether a modification or use conflicts with a prior usage. void checkUsage(Object O, UsageInfo &UI, Expr *Ref, UsageKind OtherKind, bool IsModMod) { if (UI.Diagnosed) return; const Usage &U = UI.Uses[OtherKind]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) return; Expr *Mod = U.Use; Expr *ModOrUse = Ref; if (OtherKind == UK_Use) std::swap(Mod, ModOrUse); SemaRef.Diag(Mod->getExprLoc(), IsModMod ? diag::warn_unsequenced_mod_mod : diag::warn_unsequenced_mod_use) << O << SourceRange(ModOrUse->getExprLoc()); UI.Diagnosed = true; } void notePreUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; // Uses conflict with other modifications. checkUsage(O, U, Use, UK_ModAsValue, false); } void notePostUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, false); addUsage(U, O, Use, UK_Use); } void notePreMod(Object O, Expr *Mod) { UsageInfo &U = UsageMap[O]; // Modifications conflict with other modifications and with uses. checkUsage(O, U, Mod, UK_ModAsValue, true); checkUsage(O, U, Mod, UK_Use, false); } void notePostMod(Object O, Expr *Use, UsageKind UK) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, true); addUsage(U, O, Use, UK); } public: SequenceChecker(Sema &S, Expr *E, SmallVectorImpl &WorkList) : Base(S.Context), SemaRef(S), Region(Tree.root()), ModAsSideEffect(nullptr), WorkList(WorkList), EvalTracker(nullptr) { Visit(E); } void VisitStmt(Stmt *S) { // Skip all statements which aren't expressions for now. } void VisitExpr(Expr *E) { // By default, just recurse to evaluated subexpressions. Base::VisitStmt(E); } void VisitCastExpr(CastExpr *E) { Object O = Object(); if (E->getCastKind() == CK_LValueToRValue) O = getObject(E->getSubExpr(), false); if (O) notePreUse(O, E); VisitExpr(E); if (O) notePostUse(O, E); } void VisitBinComma(BinaryOperator *BO) { // C++11 [expr.comma]p1: // Every value computation and side effect associated with the left // expression is sequenced before every value computation and side // effect associated with the right expression. SequenceTree::Seq LHS = Tree.allocate(Region); SequenceTree::Seq RHS = Tree.allocate(Region); SequenceTree::Seq OldRegion = Region; { SequencedSubexpression SeqLHS(*this); Region = LHS; Visit(BO->getLHS()); } Region = RHS; Visit(BO->getRHS()); Region = OldRegion; // Forget that LHS and RHS are sequenced. They are both unsequenced // with respect to other stuff. Tree.merge(LHS); Tree.merge(RHS); } void VisitBinAssign(BinaryOperator *BO) { // The modification is sequenced after the value computation of the LHS // and RHS, so check it before inspecting the operands and update the // map afterwards. Object O = getObject(BO->getLHS(), true); if (!O) return VisitExpr(BO); notePreMod(O, BO); // C++11 [expr.ass]p7: // E1 op= E2 is equivalent to E1 = E1 op E2, except that E1 is evaluated // only once. // // Therefore, for a compound assignment operator, O is considered used // everywhere except within the evaluation of E1 itself. if (isa(BO)) notePreUse(O, BO); Visit(BO->getLHS()); if (isa(BO)) notePostUse(O, BO); Visit(BO->getRHS()); // C++11 [expr.ass]p1: // the assignment is sequenced [...] before the value computation of the // assignment expression. // C11 6.5.16/3 has no such rule. notePostMod(O, BO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitCompoundAssignOperator(CompoundAssignOperator *CAO) { VisitBinAssign(CAO); } void VisitUnaryPreInc(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreDec(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); // C++11 [expr.pre.incr]p1: // the expression ++x is equivalent to x+=1 notePostMod(O, UO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitUnaryPostInc(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostDec(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); notePostMod(O, UO, UK_ModAsSideEffect); } /// Don't visit the RHS of '&&' or '||' if it might not be evaluated. void VisitBinLOr(BinaryOperator *BO) { // The side-effects of the LHS of an '&&' are sequenced before the // value computation of the RHS, and hence before the value computation // of the '&&' itself, unless the LHS evaluates to zero. We treat them // as if they were unconditionally sequenced. EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (!Result) Visit(BO->getRHS()); } else { // Check for unsequenced operations in the RHS, treating it as an // entirely separate evaluation. // // FIXME: If there are operations in the RHS which are unsequenced // with respect to operations outside the RHS, and those operations // are unconditionally evaluated, diagnose them. WorkList.push_back(BO->getRHS()); } } void VisitBinLAnd(BinaryOperator *BO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (Result) Visit(BO->getRHS()); } else { WorkList.push_back(BO->getRHS()); } } // Only visit the condition, unless we can be sure which subexpression will // be chosen. void VisitAbstractConditionalOperator(AbstractConditionalOperator *CO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(CO->getCond()); } bool Result; if (Eval.evaluate(CO->getCond(), Result)) Visit(Result ? CO->getTrueExpr() : CO->getFalseExpr()); else { WorkList.push_back(CO->getTrueExpr()); WorkList.push_back(CO->getFalseExpr()); } } void VisitCallExpr(CallExpr *CE) { // C++11 [intro.execution]p15: // When calling a function [...], every value computation and side effect // associated with any argument expression, or with the postfix expression // designating the called function, is sequenced before execution of every // expression or statement in the body of the function [and thus before // the value computation of its result]. SequencedSubexpression Sequenced(*this); Base::VisitCallExpr(CE); // FIXME: CXXNewExpr and CXXDeleteExpr implicitly call functions. } void VisitCXXConstructExpr(CXXConstructExpr *CCE) { // This is a call, so all subexpressions are sequenced before the result. SequencedSubexpression Sequenced(*this); if (!CCE->isListInitialization()) return VisitExpr(CCE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (CXXConstructExpr::arg_iterator I = CCE->arg_begin(), E = CCE->arg_end(); I != E; ++I) { Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(*I); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } void VisitInitListExpr(InitListExpr *ILE) { if (!SemaRef.getLangOpts().CPlusPlus11) return VisitExpr(ILE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (unsigned I = 0; I < ILE->getNumInits(); ++I) { Expr *E = ILE->getInit(I); if (!E) continue; Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(E); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } }; } void Sema::CheckUnsequencedOperations(Expr *E) { SmallVector WorkList; WorkList.push_back(E); while (!WorkList.empty()) { Expr *Item = WorkList.pop_back_val(); SequenceChecker(*this, Item, WorkList); } } void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc, bool IsConstexpr) { CheckImplicitConversions(E, CheckLoc); CheckUnsequencedOperations(E); if (!IsConstexpr && !E->isValueDependent()) CheckForIntOverflow(E); } void Sema::CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *BitField, Expr *Init) { (void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc); } /// CheckParmsForFunctionDef - Check that the parameters of the given /// function are appropriate for the definition of a function. This /// takes care of any checks that cannot be performed on the /// declaration itself, e.g., that the types of each of the function /// parameters are complete. bool Sema::CheckParmsForFunctionDef(ParmVarDecl *const *P, ParmVarDecl *const *PEnd, bool CheckParameterNames) { bool HasInvalidParm = false; for (; P != PEnd; ++P) { ParmVarDecl *Param = *P; // C99 6.7.5.3p4: the parameters in a parameter type list in a // function declarator that is part of a function definition of // that function shall not have incomplete type. // // This is also C++ [dcl.fct]p6. if (!Param->isInvalidDecl() && RequireCompleteType(Param->getLocation(), Param->getType(), diag::err_typecheck_decl_incomplete_type)) { Param->setInvalidDecl(); HasInvalidParm = true; } // C99 6.9.1p5: If the declarator includes a parameter type list, the // declaration of each parameter shall include an identifier. if (CheckParameterNames && Param->getIdentifier() == nullptr && !Param->isImplicit() && !getLangOpts().CPlusPlus) Diag(Param->getLocation(), diag::err_parameter_name_omitted); // C99 6.7.5.3p12: // If the function declarator is not part of a definition of that // function, parameters may have incomplete type and may use the [*] // notation in their sequences of declarator specifiers to specify // variable length array types. QualType PType = Param->getOriginalType(); while (const ArrayType *AT = Context.getAsArrayType(PType)) { if (AT->getSizeModifier() == ArrayType::Star) { // FIXME: This diagnostic should point the '[*]' if source-location // information is added for it. Diag(Param->getLocation(), diag::err_array_star_in_function_definition); break; } PType= AT->getElementType(); } // MSVC destroys objects passed by value in the callee. Therefore a // function definition which takes such a parameter must be able to call the // object's destructor. However, we don't perform any direct access check // on the dtor. if (getLangOpts().CPlusPlus && Context.getTargetInfo() .getCXXABI() .areArgsDestroyedLeftToRightInCallee()) { if (!Param->isInvalidDecl()) { if (const RecordType *RT = Param->getType()->getAs()) { CXXRecordDecl *ClassDecl = cast(RT->getDecl()); if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); } } } } } return HasInvalidParm; } /// CheckCastAlign - Implements -Wcast-align, which warns when a /// pointer cast increases the alignment requirements. void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) { // This is actually a lot of work to potentially be doing on every // cast; don't do it if we're ignoring -Wcast_align (as is the default). if (getDiagnostics().isIgnored(diag::warn_cast_align, TRange.getBegin())) return; // Ignore dependent types. if (T->isDependentType() || Op->getType()->isDependentType()) return; // Require that the destination be a pointer type. const PointerType *DestPtr = T->getAs(); if (!DestPtr) return; // If the destination has alignment 1, we're done. QualType DestPointee = DestPtr->getPointeeType(); if (DestPointee->isIncompleteType()) return; CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee); if (DestAlign.isOne()) return; // Require that the source be a pointer type. const PointerType *SrcPtr = Op->getType()->getAs(); if (!SrcPtr) return; QualType SrcPointee = SrcPtr->getPointeeType(); // Whitelist casts from cv void*. We already implicitly // whitelisted casts to cv void*, since they have alignment 1. // Also whitelist casts involving incomplete types, which implicitly // includes 'void'. if (SrcPointee->isIncompleteType()) return; CharUnits SrcAlign = Context.getTypeAlignInChars(SrcPointee); if (SrcAlign >= DestAlign) return; Diag(TRange.getBegin(), diag::warn_cast_align) << Op->getType() << T << static_cast(SrcAlign.getQuantity()) << static_cast(DestAlign.getQuantity()) << TRange << Op->getSourceRange(); } static const Type* getElementType(const Expr *BaseExpr) { const Type* EltType = BaseExpr->getType().getTypePtr(); if (EltType->isAnyPointerType()) return EltType->getPointeeType().getTypePtr(); else if (EltType->isArrayType()) return EltType->getBaseElementTypeUnsafe(); return EltType; } /// \brief Check whether this array fits the idiom of a size-one tail padded /// array member of a struct. /// /// We avoid emitting out-of-bounds access warnings for such arrays as they are /// commonly used to emulate flexible arrays in C89 code. static bool IsTailPaddedMemberArray(Sema &S, llvm::APInt Size, const NamedDecl *ND) { if (Size != 1 || !ND) return false; const FieldDecl *FD = dyn_cast(ND); if (!FD) return false; // Don't consider sizes resulting from macro expansions or template argument // substitution to form C89 tail-padded arrays. TypeSourceInfo *TInfo = FD->getTypeSourceInfo(); while (TInfo) { TypeLoc TL = TInfo->getTypeLoc(); // Look through typedefs. if (TypedefTypeLoc TTL = TL.getAs()) { const TypedefNameDecl *TDL = TTL.getTypedefNameDecl(); TInfo = TDL->getTypeSourceInfo(); continue; } if (ConstantArrayTypeLoc CTL = TL.getAs()) { const Expr *SizeExpr = dyn_cast(CTL.getSizeExpr()); if (!SizeExpr || SizeExpr->getExprLoc().isMacroID()) return false; } break; } const RecordDecl *RD = dyn_cast(FD->getDeclContext()); if (!RD) return false; if (RD->isUnion()) return false; if (const CXXRecordDecl *CRD = dyn_cast(RD)) { if (!CRD->isStandardLayout()) return false; } // See if this is the last field decl in the record. const Decl *D = FD; while ((D = D->getNextDeclInContext())) if (isa(D)) return false; return true; } void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, const ArraySubscriptExpr *ASE, bool AllowOnePastEnd, bool IndexNegated) { IndexExpr = IndexExpr->IgnoreParenImpCasts(); if (IndexExpr->isValueDependent()) return; const Type *EffectiveType = getElementType(BaseExpr); BaseExpr = BaseExpr->IgnoreParenCasts(); const ConstantArrayType *ArrayTy = Context.getAsConstantArrayType(BaseExpr->getType()); if (!ArrayTy) return; llvm::APSInt index; if (!IndexExpr->EvaluateAsInt(index, Context)) return; if (IndexNegated) index = -index; const NamedDecl *ND = nullptr; if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); if (index.isUnsigned() || !index.isNegative()) { llvm::APInt size = ArrayTy->getSize(); if (!size.isStrictlyPositive()) return; const Type* BaseType = getElementType(BaseExpr); if (BaseType != EffectiveType) { // Make sure we're comparing apples to apples when comparing index to size uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType); uint64_t array_typesize = Context.getTypeSize(BaseType); // Handle ptrarith_typesize being zero, such as when casting to void* if (!ptrarith_typesize) ptrarith_typesize = 1; if (ptrarith_typesize != array_typesize) { // There's a cast to a different size type involved uint64_t ratio = array_typesize / ptrarith_typesize; // TODO: Be smarter about handling cases where array_typesize is not a // multiple of ptrarith_typesize if (ptrarith_typesize * ratio == array_typesize) size *= llvm::APInt(size.getBitWidth(), ratio); } } if (size.getBitWidth() > index.getBitWidth()) index = index.zext(size.getBitWidth()); else if (size.getBitWidth() < index.getBitWidth()) size = size.zext(index.getBitWidth()); // For array subscripting the index must be less than size, but for pointer // arithmetic also allow the index (offset) to be equal to size since // computing the next address after the end of the array is legal and // commonly done e.g. in C++ iterators and range-based for loops. if (AllowOnePastEnd ? index.ule(size) : index.ult(size)) return; // Also don't warn for arrays of size 1 which are members of some // structure. These are often used to approximate flexible arrays in C89 // code. if (IsTailPaddedMemberArray(*this, size, ND)) return; // Suppress the warning if the subscript expression (as identified by the // ']' location) and the index expression are both from macro expansions // within a system header. if (ASE) { SourceLocation RBracketLoc = SourceMgr.getSpellingLoc( ASE->getRBracketLoc()); if (SourceMgr.isInSystemHeader(RBracketLoc)) { SourceLocation IndexLoc = SourceMgr.getSpellingLoc( IndexExpr->getLocStart()); if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc)) return; } } unsigned DiagID = diag::warn_ptr_arith_exceeds_bounds; if (ASE) DiagID = diag::warn_array_index_exceeds_bounds; DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << size.toString(10, true) << (unsigned)size.getLimitedValue(~0U) << IndexExpr->getSourceRange()); } else { unsigned DiagID = diag::warn_array_index_precedes_bounds; if (!ASE) { DiagID = diag::warn_ptr_arith_precedes_bounds; if (index.isNegative()) index = -index; } DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << IndexExpr->getSourceRange()); } if (!ND) { // Try harder to find a NamedDecl to point at in the note. while (const ArraySubscriptExpr *ASE = dyn_cast(BaseExpr)) BaseExpr = ASE->getBase()->IgnoreParenCasts(); if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); } if (ND) DiagRuntimeBehavior(ND->getLocStart(), BaseExpr, PDiag(diag::note_array_index_out_of_bounds) << ND->getDeclName()); } void Sema::CheckArrayAccess(const Expr *expr) { int AllowOnePastEnd = 0; while (expr) { expr = expr->IgnoreParenImpCasts(); switch (expr->getStmtClass()) { case Stmt::ArraySubscriptExprClass: { const ArraySubscriptExpr *ASE = cast(expr); CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE, AllowOnePastEnd > 0); return; } case Stmt::UnaryOperatorClass: { // Only unwrap the * and & unary operators const UnaryOperator *UO = cast(expr); expr = UO->getSubExpr(); switch (UO->getOpcode()) { case UO_AddrOf: AllowOnePastEnd++; break; case UO_Deref: AllowOnePastEnd--; break; default: return; } break; } case Stmt::ConditionalOperatorClass: { const ConditionalOperator *cond = cast(expr); if (const Expr *lhs = cond->getLHS()) CheckArrayAccess(lhs); if (const Expr *rhs = cond->getRHS()) CheckArrayAccess(rhs); return; } default: return; } } } //===--- CHECK: Objective-C retain cycles ----------------------------------// namespace { struct RetainCycleOwner { RetainCycleOwner() : Variable(nullptr), Indirect(false) {} VarDecl *Variable; SourceRange Range; SourceLocation Loc; bool Indirect; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } /// Consider whether capturing the given variable can possibly lead to /// a retain cycle. static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) { // In ARC, it's captured strongly iff the variable has __strong // lifetime. In MRR, it's captured strongly if the variable is // __block and has an appropriate type. if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; owner.Variable = var; if (ref) owner.setLocsFrom(ref); return true; } static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) { while (true) { e = e->IgnoreParens(); if (CastExpr *cast = dyn_cast(e)) { switch (cast->getCastKind()) { case CK_BitCast: case CK_LValueBitCast: case CK_LValueToRValue: case CK_ARCReclaimReturnedObject: e = cast->getSubExpr(); continue; default: return false; } } if (ObjCIvarRefExpr *ref = dyn_cast(e)) { ObjCIvarDecl *ivar = ref->getDecl(); if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; // Try to find a retain cycle in the base. if (!findRetainCycleOwner(S, ref->getBase(), owner)) return false; if (ref->isFreeIvar()) owner.setLocsFrom(ref); owner.Indirect = true; return true; } if (DeclRefExpr *ref = dyn_cast(e)) { VarDecl *var = dyn_cast(ref->getDecl()); if (!var) return false; return considerVariable(var, ref, owner); } if (MemberExpr *member = dyn_cast(e)) { if (member->isArrow()) return false; // Don't count this as an indirect ownership. e = member->getBase(); continue; } if (PseudoObjectExpr *pseudo = dyn_cast(e)) { // Only pay attention to pseudo-objects on property references. ObjCPropertyRefExpr *pre = dyn_cast(pseudo->getSyntacticForm() ->IgnoreParens()); if (!pre) return false; if (pre->isImplicitProperty()) return false; ObjCPropertyDecl *property = pre->getExplicitProperty(); if (!property->isRetaining() && !(property->getPropertyIvarDecl() && property->getPropertyIvarDecl()->getType() .getObjCLifetime() == Qualifiers::OCL_Strong)) return false; owner.Indirect = true; if (pre->isSuperReceiver()) { owner.Variable = S.getCurMethodDecl()->getSelfDecl(); if (!owner.Variable) return false; owner.Loc = pre->getLocation(); owner.Range = pre->getSourceRange(); return true; } e = const_cast(cast(pre->getBase()) ->getSourceExpr()); continue; } // Array ivars? return false; } } namespace { struct FindCaptureVisitor : EvaluatedExprVisitor { FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Context(Context), Variable(variable), Capturer(nullptr), VarWillBeReased(false) {} ASTContext &Context; VarDecl *Variable; Expr *Capturer; bool VarWillBeReased; void VisitDeclRefExpr(DeclRefExpr *ref) { if (ref->getDecl() == Variable && !Capturer) Capturer = ref; } void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) { if (Capturer) return; Visit(ref->getBase()); if (Capturer && ref->isFreeIvar()) Capturer = ref; } void VisitBlockExpr(BlockExpr *block) { // Look inside nested blocks if (block->getBlockDecl()->capturesVariable(Variable)) Visit(block->getBlockDecl()->getBody()); } void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) { if (Capturer) return; if (OVE->getSourceExpr()) Visit(OVE->getSourceExpr()); } void VisitBinaryOperator(BinaryOperator *BinOp) { if (!Variable || VarWillBeReased || BinOp->getOpcode() != BO_Assign) return; Expr *LHS = BinOp->getLHS(); if (const DeclRefExpr *DRE = dyn_cast_or_null(LHS)) { if (DRE->getDecl() != Variable) return; if (Expr *RHS = BinOp->getRHS()) { RHS = RHS->IgnoreParenCasts(); llvm::APSInt Value; VarWillBeReased = (RHS && RHS->isIntegerConstantExpr(Value, Context) && Value == 0); } } } }; } /// Check whether the given argument is a block which captures a /// variable. static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) { assert(owner.Variable && owner.Loc.isValid()); e = e->IgnoreParenCasts(); // Look through [^{...} copy] and Block_copy(^{...}). if (ObjCMessageExpr *ME = dyn_cast(e)) { Selector Cmd = ME->getSelector(); if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") { e = ME->getInstanceReceiver(); if (!e) return nullptr; e = e->IgnoreParenCasts(); } } else if (CallExpr *CE = dyn_cast(e)) { if (CE->getNumArgs() == 1) { FunctionDecl *Fn = dyn_cast_or_null(CE->getCalleeDecl()); if (Fn) { const IdentifierInfo *FnI = Fn->getIdentifier(); if (FnI && FnI->isStr("_Block_copy")) { e = CE->getArg(0)->IgnoreParenCasts(); } } } } BlockExpr *block = dyn_cast(e); if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable)) return nullptr; FindCaptureVisitor visitor(S.Context, owner.Variable); visitor.Visit(block->getBlockDecl()->getBody()); return visitor.VarWillBeReased ? nullptr : visitor.Capturer; } static void diagnoseRetainCycle(Sema &S, Expr *capturer, RetainCycleOwner &owner) { assert(capturer); assert(owner.Variable && owner.Loc.isValid()); S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle) << owner.Variable << capturer->getSourceRange(); S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner) << owner.Indirect << owner.Range; } /// Check for a keyword selector that starts with the word 'add' or /// 'set'. static bool isSetterLikeSelector(Selector sel) { if (sel.isUnarySelector()) return false; StringRef str = sel.getNameForSlot(0); while (!str.empty() && str.front() == '_') str = str.substr(1); if (str.startswith("set")) str = str.substr(3); else if (str.startswith("add")) { // Specially whitelist 'addOperationWithBlock:'. if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock")) return false; str = str.substr(3); } else return false; if (str.empty()) return true; return !isLowercase(str.front()); } /// Check a message send to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(ObjCMessageExpr *msg) { // Only check instance methods whose selector looks like a setter. if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector())) return; // Try to find a variable that the receiver is strongly owned by. RetainCycleOwner owner; if (msg->getReceiverKind() == ObjCMessageExpr::Instance) { if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner)) return; } else { assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance); owner.Variable = getCurMethodDecl()->getSelfDecl(); owner.Loc = msg->getSuperLoc(); owner.Range = msg->getSuperLoc(); } // Check whether the receiver is captured by any of the arguments. for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) return diagnoseRetainCycle(*this, capturer, owner); } /// Check a property assign to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(Expr *receiver, Expr *argument) { RetainCycleOwner owner; if (!findRetainCycleOwner(*this, receiver, owner)) return; if (Expr *capturer = findCapturingExpr(*this, argument, owner)) diagnoseRetainCycle(*this, capturer, owner); } void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) { RetainCycleOwner Owner; if (!considerVariable(Var, /*DeclRefExpr=*/nullptr, Owner)) return; // Because we don't have an expression for the variable, we have to set the // location explicitly here. Owner.Loc = Var->getLocation(); Owner.Range = Var->getSourceRange(); if (Expr *Capturer = findCapturingExpr(*this, Init, Owner)) diagnoseRetainCycle(*this, Capturer, Owner); } static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc, Expr *RHS, bool isProperty) { // Check if RHS is an Objective-C object literal, which also can get // immediately zapped in a weak reference. Note that we explicitly // allow ObjCStringLiterals, since those are designed to never really die. RHS = RHS->IgnoreParenImpCasts(); // This enum needs to match with the 'select' in // warn_objc_arc_literal_assign (off-by-1). Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS); if (Kind == Sema::LK_String || Kind == Sema::LK_None) return false; S.Diag(Loc, diag::warn_arc_literal_assign) << (unsigned) Kind << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc, Qualifiers::ObjCLifetime LT, Expr *RHS, bool isProperty) { // Strip off any implicit cast added to get to the one ARC-specific. while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { S.Diag(Loc, diag::warn_arc_retained_assign) << (LT == Qualifiers::OCL_ExplicitNone) << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } RHS = cast->getSubExpr(); } if (LT == Qualifiers::OCL_Weak && checkUnsafeAssignLiteral(S, Loc, RHS, isProperty)) return true; return false; } bool Sema::checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS) { Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime(); if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone) return false; if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false)) return true; return false; } void Sema::checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS) { QualType LHSType; // PropertyRef on LHS type need be directly obtained from // its declaration as it has a PseudoType. ObjCPropertyRefExpr *PRE = dyn_cast(LHS->IgnoreParens()); if (PRE && !PRE->isImplicitProperty()) { const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (PD) LHSType = PD->getType(); } if (LHSType.isNull()) LHSType = LHS->getType(); Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime(); if (LT == Qualifiers::OCL_Weak) { if (!Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) getCurFunction()->markSafeWeakUse(LHS); } if (checkUnsafeAssigns(Loc, LHSType, RHS)) return; // FIXME. Check for other life times. if (LT != Qualifiers::OCL_None) return; if (PRE) { if (PRE->isImplicitProperty()) return; const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (!PD) return; unsigned Attributes = PD->getPropertyAttributes(); if (Attributes & ObjCPropertyDecl::OBJC_PR_assign) { // when 'assign' attribute was not explicitly specified // by user, ignore it and rely on property type itself // for lifetime info. unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten(); if (!(AsWrittenAttr & ObjCPropertyDecl::OBJC_PR_assign) && LHSType->isObjCRetainableType()) return; while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { Diag(Loc, diag::warn_arc_retained_property_assign) << RHS->getSourceRange(); return; } RHS = cast->getSubExpr(); } } else if (Attributes & ObjCPropertyDecl::OBJC_PR_weak) { if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true)) return; } } } //===--- CHECK: Empty statement body (-Wempty-body) ---------------------===// namespace { bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { // Do not warn if the body is a macro that expands to nothing, e.g: // // #define CALL(x) // if (condition) // CALL(0); // if (Body->hasLeadingEmptyMacro()) return false; // Get line numbers of statement and body. bool StmtLineInvalid; unsigned StmtLine = SourceMgr.getSpellingLineNumber(StmtLoc, &StmtLineInvalid); if (StmtLineInvalid) return false; bool BodyLineInvalid; unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(), &BodyLineInvalid); if (BodyLineInvalid) return false; // Warn if null statement and body are on the same line. if (StmtLine != BodyLine) return false; return true; } } // Unnamed namespace void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc, const Stmt *Body, unsigned DiagID) { // Since this is a syntactic check, don't emit diagnostic for template // instantiations, this just adds noise. if (CurrentInstantiationScope) return; // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } void Sema::DiagnoseEmptyLoopBody(const Stmt *S, const Stmt *PossibleBody) { assert(!CurrentInstantiationScope); // Ensured by caller SourceLocation StmtLoc; const Stmt *Body; unsigned DiagID; if (const ForStmt *FS = dyn_cast(S)) { StmtLoc = FS->getRParenLoc(); Body = FS->getBody(); DiagID = diag::warn_empty_for_body; } else if (const WhileStmt *WS = dyn_cast(S)) { StmtLoc = WS->getCond()->getSourceRange().getEnd(); Body = WS->getBody(); DiagID = diag::warn_empty_while_body; } else return; // Neither `for' nor `while'. // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Skip expensive checks if diagnostic is disabled. if (Diags.isIgnored(DiagID, NBody->getSemiLoc())) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; // `for(...);' and `while(...);' are popular idioms, so in order to keep // noise level low, emit diagnostics only if for/while is followed by a // CompoundStmt, e.g.: // for (int i = 0; i < n; i++); // { // a(i); // } // or if for/while is followed by a statement with more indentation // than for/while itself: // for (int i = 0; i < n; i++); // a(i); bool ProbableTypo = isa(PossibleBody); if (!ProbableTypo) { bool BodyColInvalid; unsigned BodyCol = SourceMgr.getPresumedColumnNumber( PossibleBody->getLocStart(), &BodyColInvalid); if (BodyColInvalid) return; bool StmtColInvalid; unsigned StmtCol = SourceMgr.getPresumedColumnNumber( S->getLocStart(), &StmtColInvalid); if (StmtColInvalid) return; if (BodyCol > StmtCol) ProbableTypo = true; } if (ProbableTypo) { Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } } //===--- Layout compatibility ----------------------------------------------// namespace { bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); /// \brief Check if two enumeration types are layout-compatible. bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { // C++11 [dcl.enum] p8: // Two enumeration types are layout-compatible if they have the same // underlying type. return ED1->isComplete() && ED2->isComplete() && C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType()); } /// \brief Check if two fields are layout-compatible. bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { if (!isLayoutCompatible(C, Field1->getType(), Field2->getType())) return false; if (Field1->isBitField() != Field2->isBitField()) return false; if (Field1->isBitField()) { // Make sure that the bit-fields are the same length. unsigned Bits1 = Field1->getBitWidthValue(C); unsigned Bits2 = Field2->getBitWidthValue(C); if (Bits1 != Bits2) return false; } return true; } /// \brief Check if two standard-layout structs are layout-compatible. /// (C++11 [class.mem] p17) bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { // If both records are C++ classes, check that base classes match. if (const CXXRecordDecl *D1CXX = dyn_cast(RD1)) { // If one of records is a CXXRecordDecl we are in C++ mode, // thus the other one is a CXXRecordDecl, too. const CXXRecordDecl *D2CXX = cast(RD2); // Check number of base classes. if (D1CXX->getNumBases() != D2CXX->getNumBases()) return false; // Check the base classes. for (CXXRecordDecl::base_class_const_iterator Base1 = D1CXX->bases_begin(), BaseEnd1 = D1CXX->bases_end(), Base2 = D2CXX->bases_begin(); Base1 != BaseEnd1; ++Base1, ++Base2) { if (!isLayoutCompatible(C, Base1->getType(), Base2->getType())) return false; } } else if (const CXXRecordDecl *D2CXX = dyn_cast(RD2)) { // If only RD2 is a C++ class, it should have zero base classes. if (D2CXX->getNumBases() > 0) return false; } // Check the fields. RecordDecl::field_iterator Field2 = RD2->field_begin(), Field2End = RD2->field_end(), Field1 = RD1->field_begin(), Field1End = RD1->field_end(); for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) { if (!isLayoutCompatible(C, *Field1, *Field2)) return false; } if (Field1 != Field1End || Field2 != Field2End) return false; return true; } /// \brief Check if two standard-layout unions are layout-compatible. /// (C++11 [class.mem] p18) bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { llvm::SmallPtrSet UnmatchedFields; for (auto *Field2 : RD2->fields()) UnmatchedFields.insert(Field2); for (auto *Field1 : RD1->fields()) { llvm::SmallPtrSet::iterator I = UnmatchedFields.begin(), E = UnmatchedFields.end(); for ( ; I != E; ++I) { if (isLayoutCompatible(C, Field1, *I)) { bool Result = UnmatchedFields.erase(*I); (void) Result; assert(Result); break; } } if (I == E) return false; } return UnmatchedFields.empty(); } bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { if (RD1->isUnion() != RD2->isUnion()) return false; if (RD1->isUnion()) return isLayoutCompatibleUnion(C, RD1, RD2); else return isLayoutCompatibleStruct(C, RD1, RD2); } /// \brief Check if two types are layout-compatible in C++11 sense. bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { if (T1.isNull() || T2.isNull()) return false; // C++11 [basic.types] p11: // If two types T1 and T2 are the same type, then T1 and T2 are // layout-compatible types. if (C.hasSameType(T1, T2)) return true; T1 = T1.getCanonicalType().getUnqualifiedType(); T2 = T2.getCanonicalType().getUnqualifiedType(); const Type::TypeClass TC1 = T1->getTypeClass(); const Type::TypeClass TC2 = T2->getTypeClass(); if (TC1 != TC2) return false; if (TC1 == Type::Enum) { return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } else if (TC1 == Type::Record) { if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType()) return false; return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } return false; } } //===--- CHECK: pointer_with_type_tag attribute: datatypes should match ----// namespace { /// \brief Given a type tag expression find the type tag itself. /// /// \param TypeExpr Type tag expression, as it appears in user's code. /// /// \param VD Declaration of an identifier that appears in a type tag. /// /// \param MagicValue Type tag magic value. bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { while(true) { if (!TypeExpr) return false; TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts(); switch (TypeExpr->getStmtClass()) { case Stmt::UnaryOperatorClass: { const UnaryOperator *UO = cast(TypeExpr); if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) { TypeExpr = UO->getSubExpr(); continue; } return false; } case Stmt::DeclRefExprClass: { const DeclRefExpr *DRE = cast(TypeExpr); *VD = DRE->getDecl(); return true; } case Stmt::IntegerLiteralClass: { const IntegerLiteral *IL = cast(TypeExpr); llvm::APInt MagicValueAPInt = IL->getValue(); if (MagicValueAPInt.getActiveBits() <= 64) { *MagicValue = MagicValueAPInt.getZExtValue(); return true; } else return false; } case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { const AbstractConditionalOperator *ACO = cast(TypeExpr); bool Result; if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx)) { if (Result) TypeExpr = ACO->getTrueExpr(); else TypeExpr = ACO->getFalseExpr(); continue; } return false; } case Stmt::BinaryOperatorClass: { const BinaryOperator *BO = cast(TypeExpr); if (BO->getOpcode() == BO_Comma) { TypeExpr = BO->getRHS(); continue; } return false; } default: return false; } } } /// \brief Retrieve the C type corresponding to type tag TypeExpr. /// /// \param TypeExpr Expression that specifies a type tag. /// /// \param MagicValues Registered magic values. /// /// \param FoundWrongKind Set to true if a type tag was found, but of a wrong /// kind. /// /// \param TypeInfo Information about the corresponding C type. /// /// \returns true if the corresponding C type was found. bool GetMatchingCType( const IdentifierInfo *ArgumentKind, const Expr *TypeExpr, const ASTContext &Ctx, const llvm::DenseMap *MagicValues, bool &FoundWrongKind, Sema::TypeTagData &TypeInfo) { FoundWrongKind = false; // Variable declaration that has type_tag_for_datatype attribute. const ValueDecl *VD = nullptr; uint64_t MagicValue; if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue)) return false; if (VD) { if (TypeTagForDatatypeAttr *I = VD->getAttr()) { if (I->getArgumentKind() != ArgumentKind) { FoundWrongKind = true; return false; } TypeInfo.Type = I->getMatchingCType(); TypeInfo.LayoutCompatible = I->getLayoutCompatible(); TypeInfo.MustBeNull = I->getMustBeNull(); return true; } return false; } if (!MagicValues) return false; llvm::DenseMap::const_iterator I = MagicValues->find(std::make_pair(ArgumentKind, MagicValue)); if (I == MagicValues->end()) return false; TypeInfo = I->second; return true; } } // unnamed namespace void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, uint64_t MagicValue, QualType Type, bool LayoutCompatible, bool MustBeNull) { if (!TypeTagForDatatypeMagicValues) TypeTagForDatatypeMagicValues.reset( new llvm::DenseMap); TypeTagMagicValue Magic(ArgumentKind, MagicValue); (*TypeTagForDatatypeMagicValues)[Magic] = TypeTagData(Type, LayoutCompatible, MustBeNull); } namespace { bool IsSameCharType(QualType T1, QualType T2) { const BuiltinType *BT1 = T1->getAs(); if (!BT1) return false; const BuiltinType *BT2 = T2->getAs(); if (!BT2) return false; BuiltinType::Kind T1Kind = BT1->getKind(); BuiltinType::Kind T2Kind = BT2->getKind(); return (T1Kind == BuiltinType::SChar && T2Kind == BuiltinType::Char_S) || (T1Kind == BuiltinType::UChar && T2Kind == BuiltinType::Char_U) || (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) || (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar); } } // unnamed namespace void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, const Expr * const *ExprArgs) { const IdentifierInfo *ArgumentKind = Attr->getArgumentKind(); bool IsPointerAttr = Attr->getIsPointer(); const Expr *TypeTagExpr = ExprArgs[Attr->getTypeTagIdx()]; bool FoundWrongKind; TypeTagData TypeInfo; if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context, TypeTagForDatatypeMagicValues.get(), FoundWrongKind, TypeInfo)) { if (FoundWrongKind) Diag(TypeTagExpr->getExprLoc(), diag::warn_type_tag_for_datatype_wrong_kind) << TypeTagExpr->getSourceRange(); return; } const Expr *ArgumentExpr = ExprArgs[Attr->getArgumentIdx()]; if (IsPointerAttr) { // Skip implicit cast of pointer to `void *' (as a function argument). if (const ImplicitCastExpr *ICE = dyn_cast(ArgumentExpr)) if (ICE->getType()->isVoidPointerType() && ICE->getCastKind() == CK_BitCast) ArgumentExpr = ICE->getSubExpr(); } QualType ArgumentType = ArgumentExpr->getType(); // Passing a `void*' pointer shouldn't trigger a warning. if (IsPointerAttr && ArgumentType->isVoidPointerType()) return; if (TypeInfo.MustBeNull) { // Type tag with matching void type requires a null pointer. if (!ArgumentExpr->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull)) { Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_null_pointer_required) << ArgumentKind->getName() << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } return; } QualType RequiredType = TypeInfo.Type; if (IsPointerAttr) RequiredType = Context.getPointerType(RequiredType); bool mismatch = false; if (!TypeInfo.LayoutCompatible) { mismatch = !Context.hasSameType(ArgumentType, RequiredType); // C++11 [basic.fundamental] p1: // Plain char, signed char, and unsigned char are three distinct types. // // But we treat plain `char' as equivalent to `signed char' or `unsigned // char' depending on the current char signedness mode. if (mismatch) if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(), RequiredType->getPointeeType())) || (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType))) mismatch = false; } else if (IsPointerAttr) mismatch = !isLayoutCompatible(Context, ArgumentType->getPointeeType(), RequiredType->getPointeeType()); else mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType); if (mismatch) Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch) << ArgumentType << ArgumentKind << TypeInfo.LayoutCompatible << RequiredType << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } @ 1.1.1.5.4.1 log @file SemaChecking.cpp was added on branch yamt-pagecache on 2014-05-22 16:18:29 +0000 @ text @d1 7954 @ 1.1.1.5.4.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @a0 7954 //===--- SemaChecking.cpp - Extra Semantic Checking -----------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file implements extra semantic analysis beyond what is enforced // by the C type system. // //===----------------------------------------------------------------------===// #include "clang/Sema/SemaInternal.h" #include "clang/AST/ASTContext.h" #include "clang/AST/CharUnits.h" #include "clang/AST/DeclCXX.h" #include "clang/AST/DeclObjC.h" #include "clang/AST/EvaluatedExprVisitor.h" #include "clang/AST/Expr.h" #include "clang/AST/ExprCXX.h" #include "clang/AST/ExprObjC.h" #include "clang/AST/StmtCXX.h" #include "clang/AST/StmtObjC.h" #include "clang/Analysis/Analyses/FormatString.h" #include "clang/Basic/CharInfo.h" #include "clang/Basic/TargetBuiltins.h" #include "clang/Basic/TargetInfo.h" #include "clang/Lex/Preprocessor.h" #include "clang/Sema/Initialization.h" #include "clang/Sema/Lookup.h" #include "clang/Sema/ScopeInfo.h" #include "clang/Sema/Sema.h" #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallBitVector.h" #include "llvm/ADT/SmallString.h" #include "llvm/Support/ConvertUTF.h" #include "llvm/Support/raw_ostream.h" #include using namespace clang; using namespace sema; SourceLocation Sema::getLocationOfStringLiteralByte(const StringLiteral *SL, unsigned ByteNo) const { return SL->getLocationOfByte(ByteNo, PP.getSourceManager(), PP.getLangOpts(), PP.getTargetInfo()); } /// Checks that a call expression's argument count is the desired number. /// This is useful when doing custom type-checking. Returns true on error. static bool checkArgCount(Sema &S, CallExpr *call, unsigned desiredArgCount) { unsigned argCount = call->getNumArgs(); if (argCount == desiredArgCount) return false; if (argCount < desiredArgCount) return S.Diag(call->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getSourceRange(); // Highlight all the excess arguments. SourceRange range(call->getArg(desiredArgCount)->getLocStart(), call->getArg(argCount - 1)->getLocEnd()); return S.Diag(range.getBegin(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << desiredArgCount << argCount << call->getArg(1)->getSourceRange(); } /// Check that the first argument to __builtin_annotation is an integer /// and the second argument is a non-wide string literal. static bool SemaBuiltinAnnotation(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 2)) return true; // First argument should be an integer. Expr *ValArg = TheCall->getArg(0); QualType Ty = ValArg->getType(); if (!Ty->isIntegerType()) { S.Diag(ValArg->getLocStart(), diag::err_builtin_annotation_first_arg) << ValArg->getSourceRange(); return true; } // Second argument should be a constant string. Expr *StrArg = TheCall->getArg(1)->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(StrArg); if (!Literal || !Literal->isAscii()) { S.Diag(StrArg->getLocStart(), diag::err_builtin_annotation_second_arg) << StrArg->getSourceRange(); return true; } TheCall->setType(Ty); return false; } /// Check that the argument to __builtin_addressof is a glvalue, and set the /// result type to the corresponding pointer type. static bool SemaBuiltinAddressof(Sema &S, CallExpr *TheCall) { if (checkArgCount(S, TheCall, 1)) return true; ExprResult Arg(S.Owned(TheCall->getArg(0))); QualType ResultType = S.CheckAddressOfOperand(Arg, TheCall->getLocStart()); if (ResultType.isNull()) return true; TheCall->setArg(0, Arg.take()); TheCall->setType(ResultType); return false; } ExprResult Sema::CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { ExprResult TheCallResult(Owned(TheCall)); // Find out if any arguments are required to be integer constant expressions. unsigned ICEArguments = 0; ASTContext::GetBuiltinTypeError Error; Context.GetBuiltinType(BuiltinID, Error, &ICEArguments); if (Error != ASTContext::GE_None) ICEArguments = 0; // Don't diagnose previously diagnosed errors. // If any arguments are required to be ICE's, check and diagnose. for (unsigned ArgNo = 0; ICEArguments != 0; ++ArgNo) { // Skip arguments not required to be ICE's. if ((ICEArguments & (1 << ArgNo)) == 0) continue; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, ArgNo, Result)) return true; ICEArguments &= ~(1 << ArgNo); } switch (BuiltinID) { case Builtin::BI__builtin___CFStringMakeConstantString: assert(TheCall->getNumArgs() == 1 && "Wrong # arguments to builtin CFStringMakeConstantString"); if (CheckObjCString(TheCall->getArg(0))) return ExprError(); break; case Builtin::BI__builtin_stdarg_start: case Builtin::BI__builtin_va_start: if (SemaBuiltinVAStart(TheCall)) return ExprError(); break; case Builtin::BI__builtin_isgreater: case Builtin::BI__builtin_isgreaterequal: case Builtin::BI__builtin_isless: case Builtin::BI__builtin_islessequal: case Builtin::BI__builtin_islessgreater: case Builtin::BI__builtin_isunordered: if (SemaBuiltinUnorderedCompare(TheCall)) return ExprError(); break; case Builtin::BI__builtin_fpclassify: if (SemaBuiltinFPClassification(TheCall, 6)) return ExprError(); break; case Builtin::BI__builtin_isfinite: case Builtin::BI__builtin_isinf: case Builtin::BI__builtin_isinf_sign: case Builtin::BI__builtin_isnan: case Builtin::BI__builtin_isnormal: if (SemaBuiltinFPClassification(TheCall, 1)) return ExprError(); break; case Builtin::BI__builtin_shufflevector: return SemaBuiltinShuffleVector(TheCall); // TheCall will be freed by the smart pointer here, but that's fine, since // SemaBuiltinShuffleVector guts it, but then doesn't release it. case Builtin::BI__builtin_prefetch: if (SemaBuiltinPrefetch(TheCall)) return ExprError(); break; case Builtin::BI__builtin_object_size: if (SemaBuiltinObjectSize(TheCall)) return ExprError(); break; case Builtin::BI__builtin_longjmp: if (SemaBuiltinLongjmp(TheCall)) return ExprError(); break; case Builtin::BI__builtin_classify_type: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__builtin_constant_p: if (checkArgCount(*this, TheCall, 1)) return true; TheCall->setType(Context.IntTy); break; case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: return SemaBuiltinAtomicOverloaded(TheCallResult); #define BUILTIN(ID, TYPE, ATTRS) #define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \ case Builtin::BI##ID: \ return SemaAtomicOpsOverloaded(TheCallResult, AtomicExpr::AO##ID); #include "clang/Basic/Builtins.def" case Builtin::BI__builtin_annotation: if (SemaBuiltinAnnotation(*this, TheCall)) return ExprError(); break; case Builtin::BI__builtin_addressof: if (SemaBuiltinAddressof(*this, TheCall)) return ExprError(); break; } // Since the target specific builtins for each arch overlap, only check those // of the arch we are compiling for. if (BuiltinID >= Builtin::FirstTSBuiltin) { switch (Context.getTargetInfo().getTriple().getArch()) { case llvm::Triple::arm: case llvm::Triple::thumb: if (CheckARMBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::aarch64: case llvm::Triple::aarch64_be: if (CheckAArch64BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::mips: case llvm::Triple::mipsel: case llvm::Triple::mips64: case llvm::Triple::mips64el: if (CheckMipsBuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; case llvm::Triple::x86: case llvm::Triple::x86_64: if (CheckX86BuiltinFunctionCall(BuiltinID, TheCall)) return ExprError(); break; default: break; } } return TheCallResult; } // Get the valid immediate range for the specified NEON type code. static unsigned RFT(unsigned t, bool shift = false, bool ForceQuad = false) { NeonTypeFlags Type(t); int IsQuad = ForceQuad ? true : Type.isQuad(); switch (Type.getEltType()) { case NeonTypeFlags::Int8: case NeonTypeFlags::Poly8: return shift ? 7 : (8 << IsQuad) - 1; case NeonTypeFlags::Int16: case NeonTypeFlags::Poly16: return shift ? 15 : (4 << IsQuad) - 1; case NeonTypeFlags::Int32: return shift ? 31 : (2 << IsQuad) - 1; case NeonTypeFlags::Int64: case NeonTypeFlags::Poly64: return shift ? 63 : (1 << IsQuad) - 1; case NeonTypeFlags::Poly128: return shift ? 127 : (1 << IsQuad) - 1; case NeonTypeFlags::Float16: assert(!shift && "cannot shift float types!"); return (4 << IsQuad) - 1; case NeonTypeFlags::Float32: assert(!shift && "cannot shift float types!"); return (2 << IsQuad) - 1; case NeonTypeFlags::Float64: assert(!shift && "cannot shift float types!"); return (1 << IsQuad) - 1; } llvm_unreachable("Invalid NeonTypeFlag!"); } /// getNeonEltType - Return the QualType corresponding to the elements of /// the vector type specified by the NeonTypeFlags. This is used to check /// the pointer arguments for Neon load/store intrinsics. static QualType getNeonEltType(NeonTypeFlags Flags, ASTContext &Context, bool IsAArch64) { switch (Flags.getEltType()) { case NeonTypeFlags::Int8: return Flags.isUnsigned() ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Int16: return Flags.isUnsigned() ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Int32: return Flags.isUnsigned() ? Context.UnsignedIntTy : Context.IntTy; case NeonTypeFlags::Int64: if (IsAArch64) return Flags.isUnsigned() ? Context.UnsignedLongTy : Context.LongTy; else return Flags.isUnsigned() ? Context.UnsignedLongLongTy : Context.LongLongTy; case NeonTypeFlags::Poly8: return IsAArch64 ? Context.UnsignedCharTy : Context.SignedCharTy; case NeonTypeFlags::Poly16: return IsAArch64 ? Context.UnsignedShortTy : Context.ShortTy; case NeonTypeFlags::Poly64: return Context.UnsignedLongTy; case NeonTypeFlags::Poly128: break; case NeonTypeFlags::Float16: return Context.HalfTy; case NeonTypeFlags::Float32: return Context.FloatTy; case NeonTypeFlags::Float64: return Context.DoubleTy; } llvm_unreachable("Invalid NeonTypeFlag!"); } bool Sema::CheckNeonBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; uint64_t mask = 0; unsigned TV = 0; int PtrArgNum = -1; bool HasConstPtr = false; switch (BuiltinID) { #define GET_NEON_OVERLOAD_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_OVERLOAD_CHECK } // For NEON intrinsics which are overloaded on vector element type, validate // the immediate which specifies which variant to emit. unsigned ImmArg = TheCall->getNumArgs()-1; if (mask) { if (SemaBuiltinConstantArg(TheCall, ImmArg, Result)) return true; TV = Result.getLimitedValue(64); if ((TV > 63) || (mask & (1ULL << TV)) == 0) return Diag(TheCall->getLocStart(), diag::err_invalid_neon_type_code) << TheCall->getArg(ImmArg)->getSourceRange(); } if (PtrArgNum >= 0) { // Check that pointer arguments have the specified type. Expr *Arg = TheCall->getArg(PtrArgNum); if (ImplicitCastExpr *ICE = dyn_cast(Arg)) Arg = ICE->getSubExpr(); ExprResult RHS = DefaultFunctionArrayLvalueConversion(Arg); QualType RHSTy = RHS.get()->getType(); bool IsAArch64 = Context.getTargetInfo().getTriple().getArch() == llvm::Triple::aarch64; QualType EltTy = getNeonEltType(NeonTypeFlags(TV), Context, IsAArch64); if (HasConstPtr) EltTy = EltTy.withConst(); QualType LHSTy = Context.getPointerType(EltTy); AssignConvertType ConvTy; ConvTy = CheckSingleAssignmentConstraints(LHSTy, RHS); if (RHS.isInvalid()) return true; if (DiagnoseAssignmentResult(ConvTy, Arg->getLocStart(), LHSTy, RHSTy, RHS.get(), AA_Assigning)) return true; } // For NEON intrinsics which take an immediate value as part of the // instruction, range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; #define GET_NEON_IMMEDIATE_CHECK #include "clang/Basic/arm_neon.inc" #undef GET_NEON_IMMEDIATE_CHECK } ; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this isntruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > (u + l)) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u + l << TheCall->getArg(i)->getSourceRange(); return false; } bool Sema::CheckAArch64BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; return false; } bool Sema::CheckARMBuiltinExclusiveCall(unsigned BuiltinID, CallExpr *TheCall) { assert((BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_strex) && "unexpected ARM builtin"); bool IsLdrex = BuiltinID == ARM::BI__builtin_arm_ldrex; DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // Ensure that we have the proper number of arguments. if (checkArgCount(*this, TheCall, IsLdrex ? 1 : 2)) return true; // Inspect the pointer argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. Expr *PointerArg = TheCall->getArg(IsLdrex ? 0 : 1); ExprResult PointerArgRes = DefaultFunctionArrayLvalueConversion(PointerArg); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.take(); const PointerType *pointerType = PointerArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // ldrex takes a "const volatile T*" and strex takes a "volatile T*". Our next // task is to insert the appropriate casts into the AST. First work out just // what the appropriate type is. QualType ValType = pointerType->getPointeeType(); QualType AddrType = ValType.getUnqualifiedType().withVolatile(); if (IsLdrex) AddrType.addConst(); // Issue a warning if the cast is dodgy. CastKind CastNeeded = CK_NoOp; if (!AddrType.isAtLeastAsQualifiedAs(ValType)) { CastNeeded = CK_BitCast; Diag(DRE->getLocStart(), diag::ext_typecheck_convert_discards_qualifiers) << PointerArg->getType() << Context.getPointerType(AddrType) << AA_Passing << PointerArg->getSourceRange(); } // Finally, do the cast and replace the argument with the corrected version. AddrType = Context.getPointerType(AddrType); PointerArgRes = ImpCastExprToType(PointerArg, AddrType, CastNeeded); if (PointerArgRes.isInvalid()) return true; PointerArg = PointerArgRes.take(); TheCall->setArg(IsLdrex ? 0 : 1, PointerArg); // In general, we allow ints, floats and pointers to be loaded and stored. if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType() && !ValType->isFloatingType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intfltptr) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } // But ARM doesn't have instructions to deal with 128-bit versions. if (Context.getTypeSize(ValType) > 64) { Diag(DRE->getLocStart(), diag::err_atomic_exclusive_builtin_pointer_size) << PointerArg->getType() << PointerArg->getSourceRange(); return true; } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << PointerArg->getSourceRange(); return true; } if (IsLdrex) { TheCall->setType(ValType); return false; } // Initialize the argument to be stored. ExprResult ValArg = TheCall->getArg(0); InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, ValType, /*consume*/ false); ValArg = PerformCopyInitialization(Entity, SourceLocation(), ValArg); if (ValArg.isInvalid()) return true; TheCall->setArg(0, ValArg.get()); // __builtin_arm_strex always returns an int. It's marked as such in the .def, // but the custom checker bypasses all default analysis. TheCall->setType(Context.IntTy); return false; } bool Sema::CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { llvm::APSInt Result; if (BuiltinID == ARM::BI__builtin_arm_ldrex || BuiltinID == ARM::BI__builtin_arm_strex) { return CheckARMBuiltinExclusiveCall(BuiltinID, TheCall); } if (CheckNeonBuiltinFunctionCall(BuiltinID, TheCall)) return true; // For NEON intrinsics which take an immediate value as part of the // instruction, range check them here. unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case ARM::BI__builtin_arm_ssat: i = 1; l = 1; u = 31; break; case ARM::BI__builtin_arm_usat: i = 1; u = 31; break; case ARM::BI__builtin_arm_vcvtr_f: case ARM::BI__builtin_arm_vcvtr_d: i = 1; u = 1; break; case ARM::BI__builtin_arm_dmb: case ARM::BI__builtin_arm_dsb: l = 0; u = 15; break; }; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this isntruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > (u + l)) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u+l << TheCall->getArg(i)->getSourceRange(); // FIXME: VFP Intrinsics should error if VFP not present. return false; } bool Sema::CheckMipsBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { unsigned i = 0, l = 0, u = 0; switch (BuiltinID) { default: return false; case Mips::BI__builtin_mips_wrdsp: i = 1; l = 0; u = 63; break; case Mips::BI__builtin_mips_rddsp: i = 0; l = 0; u = 63; break; case Mips::BI__builtin_mips_append: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_balign: i = 2; l = 0; u = 3; break; case Mips::BI__builtin_mips_precr_sra_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_precr_sra_r_ph_w: i = 2; l = 0; u = 31; break; case Mips::BI__builtin_mips_prepend: i = 2; l = 0; u = 31; break; }; // We can't check the value of a dependent argument. if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) return false; // Check that the immediate argument is actually a constant. llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // Range check against the upper/lower values for this instruction. unsigned Val = Result.getZExtValue(); if (Val < l || Val > u) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << l << u << TheCall->getArg(i)->getSourceRange(); return false; } bool Sema::CheckX86BuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) { switch (BuiltinID) { case X86::BI_mm_prefetch: return SemaBuiltinMMPrefetch(TheCall); break; } return false; } /// Given a FunctionDecl's FormatAttr, attempts to populate the FomatStringInfo /// parameter with the FormatAttr's correct format_idx and firstDataArg. /// Returns true when the format fits the function and the FormatStringInfo has /// been populated. bool Sema::getFormatStringInfo(const FormatAttr *Format, bool IsCXXMember, FormatStringInfo *FSI) { FSI->HasVAListArg = Format->getFirstArg() == 0; FSI->FormatIdx = Format->getFormatIdx() - 1; FSI->FirstDataArg = FSI->HasVAListArg ? 0 : Format->getFirstArg() - 1; // The way the format attribute works in GCC, the implicit this argument // of member functions is counted. However, it doesn't appear in our own // lists, so decrement format_idx in that case. if (IsCXXMember) { if(FSI->FormatIdx == 0) return false; --FSI->FormatIdx; if (FSI->FirstDataArg != 0) --FSI->FirstDataArg; } return true; } /// Checks if a the given expression evaluates to null. /// /// \brief Returns true if the value evaluates to null. static bool CheckNonNullExpr(Sema &S, const Expr *Expr) { // As a special case, transparent unions initialized with zero are // considered null for the purposes of the nonnull attribute. if (const RecordType *UT = Expr->getType()->getAsUnionType()) { if (UT->getDecl()->hasAttr()) if (const CompoundLiteralExpr *CLE = dyn_cast(Expr)) if (const InitListExpr *ILE = dyn_cast(CLE->getInitializer())) Expr = ILE->getInit(0); } bool Result; return (!Expr->isValueDependent() && Expr->EvaluateAsBooleanCondition(Result, S.Context) && !Result); } static void CheckNonNullArgument(Sema &S, const Expr *ArgExpr, SourceLocation CallSiteLoc) { if (CheckNonNullExpr(S, ArgExpr)) S.Diag(CallSiteLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); } static void CheckNonNullArguments(Sema &S, const NamedDecl *FDecl, const Expr * const *ExprArgs, SourceLocation CallSiteLoc) { // Check the attributes attached to the method/function itself. for (specific_attr_iterator I = FDecl->specific_attr_begin(), E = FDecl->specific_attr_end(); I != E; ++I) { const NonNullAttr *NonNull = *I; for (NonNullAttr::args_iterator i = NonNull->args_begin(), e = NonNull->args_end(); i != e; ++i) { CheckNonNullArgument(S, ExprArgs[*i], CallSiteLoc); } } // Check the attributes on the parameters. ArrayRef parms; if (const FunctionDecl *FD = dyn_cast(FDecl)) parms = FD->parameters(); else if (const ObjCMethodDecl *MD = dyn_cast(FDecl)) parms = MD->parameters(); unsigned argIndex = 0; for (ArrayRef::iterator I = parms.begin(), E = parms.end(); I != E; ++I, ++argIndex) { const ParmVarDecl *PVD = *I; if (PVD->hasAttr()) CheckNonNullArgument(S, ExprArgs[argIndex], CallSiteLoc); } } /// Handles the checks for format strings, non-POD arguments to vararg /// functions, and NULL arguments passed to non-NULL parameters. void Sema::checkCall(NamedDecl *FDecl, ArrayRef Args, unsigned NumParams, bool IsMemberFunction, SourceLocation Loc, SourceRange Range, VariadicCallType CallType) { // FIXME: We should check as much as we can in the template definition. if (CurContext->isDependentContext()) return; // Printf and scanf checking. llvm::SmallBitVector CheckedVarArgs; if (FDecl) { for (specific_attr_iterator I = FDecl->specific_attr_begin(), E = FDecl->specific_attr_end(); I != E; ++I) { // Only create vector if there are format attributes. CheckedVarArgs.resize(Args.size()); CheckFormatArguments(*I, Args, IsMemberFunction, CallType, Loc, Range, CheckedVarArgs); } } // Refuse POD arguments that weren't caught by the format string // checks above. if (CallType != VariadicDoesNotApply) { for (unsigned ArgIdx = NumParams; ArgIdx < Args.size(); ++ArgIdx) { // Args[ArgIdx] can be null in malformed code. if (const Expr *Arg = Args[ArgIdx]) { if (CheckedVarArgs.empty() || !CheckedVarArgs[ArgIdx]) checkVariadicArgument(Arg, CallType); } } } if (FDecl) { CheckNonNullArguments(*this, FDecl, Args.data(), Loc); // Type safety checking. for (specific_attr_iterator i = FDecl->specific_attr_begin(), e = FDecl->specific_attr_end(); i != e; ++i) { CheckArgumentWithTypeTag(*i, Args.data()); } } } /// CheckConstructorCall - Check a constructor call for correctness and safety /// properties not enforced by the C type system. void Sema::CheckConstructorCall(FunctionDecl *FDecl, ArrayRef Args, const FunctionProtoType *Proto, SourceLocation Loc) { VariadicCallType CallType = Proto->isVariadic() ? VariadicConstructor : VariadicDoesNotApply; checkCall(FDecl, Args, Proto->getNumParams(), /*IsMemberFunction=*/true, Loc, SourceRange(), CallType); } /// CheckFunctionCall - Check a direct function call for various correctness /// and safety properties not strictly enforced by the C type system. bool Sema::CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { bool IsMemberOperatorCall = isa(TheCall) && isa(FDecl); bool IsMemberFunction = isa(TheCall) || IsMemberOperatorCall; VariadicCallType CallType = getVariadicCallType(FDecl, Proto, TheCall->getCallee()); unsigned NumParams = Proto ? Proto->getNumParams() : 0; Expr** Args = TheCall->getArgs(); unsigned NumArgs = TheCall->getNumArgs(); if (IsMemberOperatorCall) { // If this is a call to a member operator, hide the first argument // from checkCall. // FIXME: Our choice of AST representation here is less than ideal. ++Args; --NumArgs; } checkCall(FDecl, llvm::makeArrayRef(Args, NumArgs), NumParams, IsMemberFunction, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); IdentifierInfo *FnInfo = FDecl->getIdentifier(); // None of the checks below are needed for functions that don't have // simple names (e.g., C++ conversion functions). if (!FnInfo) return false; CheckAbsoluteValueFunction(TheCall, FDecl, FnInfo); unsigned CMId = FDecl->getMemoryFunctionKind(); if (CMId == 0) return false; // Handle memory setting and copying functions. if (CMId == Builtin::BIstrlcpy || CMId == Builtin::BIstrlcat) CheckStrlcpycatArguments(TheCall, FnInfo); else if (CMId == Builtin::BIstrncat) CheckStrncatArguments(TheCall, FnInfo); else CheckMemaccessArguments(TheCall, CMId, FnInfo); return false; } bool Sema::CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation lbrac, ArrayRef Args) { VariadicCallType CallType = Method->isVariadic() ? VariadicMethod : VariadicDoesNotApply; checkCall(Method, Args, Method->param_size(), /*IsMemberFunction=*/false, lbrac, Method->getSourceRange(), CallType); return false; } bool Sema::CheckPointerCall(NamedDecl *NDecl, CallExpr *TheCall, const FunctionProtoType *Proto) { const VarDecl *V = dyn_cast(NDecl); if (!V) return false; QualType Ty = V->getType(); if (!Ty->isBlockPointerType() && !Ty->isFunctionPointerType()) return false; VariadicCallType CallType; if (!Proto || !Proto->isVariadic()) { CallType = VariadicDoesNotApply; } else if (Ty->isBlockPointerType()) { CallType = VariadicBlock; } else { // Ty->isFunctionPointerType() CallType = VariadicFunction; } unsigned NumParams = Proto ? Proto->getNumParams() : 0; checkCall(NDecl, llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } /// Checks function calls when a FunctionDecl or a NamedDecl is not available, /// such as function pointers returned from functions. bool Sema::CheckOtherCall(CallExpr *TheCall, const FunctionProtoType *Proto) { VariadicCallType CallType = getVariadicCallType(/*FDecl=*/0, Proto, TheCall->getCallee()); unsigned NumParams = Proto ? Proto->getNumParams() : 0; checkCall(/*FDecl=*/0, llvm::makeArrayRef( TheCall->getArgs(), TheCall->getNumArgs()), NumParams, /*IsMemberFunction=*/false, TheCall->getRParenLoc(), TheCall->getCallee()->getSourceRange(), CallType); return false; } ExprResult Sema::SemaAtomicOpsOverloaded(ExprResult TheCallResult, AtomicExpr::AtomicOp Op) { CallExpr *TheCall = cast(TheCallResult.get()); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); // All these operations take one of the following forms: enum { // C __c11_atomic_init(A *, C) Init, // C __c11_atomic_load(A *, int) Load, // void __atomic_load(A *, CP, int) Copy, // C __c11_atomic_add(A *, M, int) Arithmetic, // C __atomic_exchange_n(A *, CP, int) Xchg, // void __atomic_exchange(A *, C *, CP, int) GNUXchg, // bool __c11_atomic_compare_exchange_strong(A *, C *, CP, int, int) C11CmpXchg, // bool __atomic_compare_exchange(A *, C *, CP, bool, int, int) GNUCmpXchg } Form = Init; const unsigned NumArgs[] = { 2, 2, 3, 3, 3, 4, 5, 6 }; const unsigned NumVals[] = { 1, 0, 1, 1, 1, 2, 2, 3 }; // where: // C is an appropriate type, // A is volatile _Atomic(C) for __c11 builtins and is C for GNU builtins, // CP is C for __c11 builtins and GNU _n builtins and is C * otherwise, // M is C if C is an integer, and ptrdiff_t if C is a pointer, and // the int parameters are for orderings. assert(AtomicExpr::AO__c11_atomic_init == 0 && AtomicExpr::AO__c11_atomic_fetch_xor + 1 == AtomicExpr::AO__atomic_load && "need to update code for modified C11 atomics"); bool IsC11 = Op >= AtomicExpr::AO__c11_atomic_init && Op <= AtomicExpr::AO__c11_atomic_fetch_xor; bool IsN = Op == AtomicExpr::AO__atomic_load_n || Op == AtomicExpr::AO__atomic_store_n || Op == AtomicExpr::AO__atomic_exchange_n || Op == AtomicExpr::AO__atomic_compare_exchange_n; bool IsAddSub = false; switch (Op) { case AtomicExpr::AO__c11_atomic_init: Form = Init; break; case AtomicExpr::AO__c11_atomic_load: case AtomicExpr::AO__atomic_load_n: Form = Load; break; case AtomicExpr::AO__c11_atomic_store: case AtomicExpr::AO__atomic_load: case AtomicExpr::AO__atomic_store: case AtomicExpr::AO__atomic_store_n: Form = Copy; break; case AtomicExpr::AO__c11_atomic_fetch_add: case AtomicExpr::AO__c11_atomic_fetch_sub: case AtomicExpr::AO__atomic_fetch_add: case AtomicExpr::AO__atomic_fetch_sub: case AtomicExpr::AO__atomic_add_fetch: case AtomicExpr::AO__atomic_sub_fetch: IsAddSub = true; // Fall through. case AtomicExpr::AO__c11_atomic_fetch_and: case AtomicExpr::AO__c11_atomic_fetch_or: case AtomicExpr::AO__c11_atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_and: case AtomicExpr::AO__atomic_fetch_or: case AtomicExpr::AO__atomic_fetch_xor: case AtomicExpr::AO__atomic_fetch_nand: case AtomicExpr::AO__atomic_and_fetch: case AtomicExpr::AO__atomic_or_fetch: case AtomicExpr::AO__atomic_xor_fetch: case AtomicExpr::AO__atomic_nand_fetch: Form = Arithmetic; break; case AtomicExpr::AO__c11_atomic_exchange: case AtomicExpr::AO__atomic_exchange_n: Form = Xchg; break; case AtomicExpr::AO__atomic_exchange: Form = GNUXchg; break; case AtomicExpr::AO__c11_atomic_compare_exchange_strong: case AtomicExpr::AO__c11_atomic_compare_exchange_weak: Form = C11CmpXchg; break; case AtomicExpr::AO__atomic_compare_exchange: case AtomicExpr::AO__atomic_compare_exchange_n: Form = GNUCmpXchg; break; } // Check we have the right number of arguments. if (TheCall->getNumArgs() < NumArgs[Form]) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } else if (TheCall->getNumArgs() > NumArgs[Form]) { Diag(TheCall->getArg(NumArgs[Form])->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 << NumArgs[Form] << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic operation. Expr *Ptr = TheCall->getArg(0); Ptr = DefaultFunctionArrayLvalueConversion(Ptr).get(); const PointerType *pointerType = Ptr->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // For a __c11 builtin, this should be a pointer to an _Atomic type. QualType AtomTy = pointerType->getPointeeType(); // 'A' QualType ValType = AtomTy; // 'C' if (IsC11) { if (!AtomTy->isAtomicType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (AtomTy.isConstQualified()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_non_const_atomic) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } ValType = AtomTy->getAs()->getValueType(); } // For an arithmetic operation, the implied arithmetic must be well-formed. if (Form == Arithmetic) { // gcc does not enforce these rules for GNU atomics, but we do so for sanity. if (IsAddSub && !ValType->isIntegerType() && !ValType->isPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsAddSub && !ValType->isIntegerType()) { Diag(DRE->getLocStart(), diag::err_atomic_op_bitwise_needs_atomic_int) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } } else if (IsN && !ValType->isIntegerType() && !ValType->isPointerType()) { // For __atomic_*_n operations, the value type must be a scalar integral or // pointer type which is 1, 2, 4, 8 or 16 bytes in length. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_atomic_int_or_ptr) << IsC11 << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } if (!IsC11 && !AtomTy.isTriviallyCopyableType(Context) && !AtomTy->isScalarType()) { // For GNU atomics, require a trivially-copyable type. This is not part of // the GNU atomics specification, but we enforce it for sanity. Diag(DRE->getLocStart(), diag::err_atomic_op_needs_trivial_copy) << Ptr->getType() << Ptr->getSourceRange(); return ExprError(); } // FIXME: For any builtin other than a load, the ValType must not be // const-qualified. switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: // FIXME: Can this happen? By this point, ValType should be known // to be trivially copyable. Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << Ptr->getSourceRange(); return ExprError(); } QualType ResultType = ValType; if (Form == Copy || Form == GNUXchg || Form == Init) ResultType = Context.VoidTy; else if (Form == C11CmpXchg || Form == GNUCmpXchg) ResultType = Context.BoolTy; // The type of a parameter passed 'by value'. In the GNU atomics, such // arguments are actually passed as pointers. QualType ByValType = ValType; // 'CP' if (!IsC11 && !IsN) ByValType = Ptr->getType(); // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 1; i != NumArgs[Form]; ++i) { QualType Ty; if (i < NumVals[Form] + 1) { switch (i) { case 1: // The second argument is the non-atomic operand. For arithmetic, this // is always passed by value, and for a compare_exchange it is always // passed by address. For the rest, GNU uses by-address and C11 uses // by-value. assert(Form != Load); if (Form == Init || (Form == Arithmetic && ValType->isIntegerType())) Ty = ValType; else if (Form == Copy || Form == Xchg) Ty = ByValType; else if (Form == Arithmetic) Ty = Context.getPointerDiffType(); else Ty = Context.getPointerType(ValType.getUnqualifiedType()); break; case 2: // The third argument to compare_exchange / GNU exchange is a // (pointer to a) desired value. Ty = ByValType; break; case 3: // The fourth argument to GNU compare_exchange is a 'weak' flag. Ty = Context.BoolTy; break; } } else { // The order(s) are always converted to int. Ty = Context.IntTy; } InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, Ty, false); ExprResult Arg = TheCall->getArg(i); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; TheCall->setArg(i, Arg.get()); } // Permute the arguments into a 'consistent' order. SmallVector SubExprs; SubExprs.push_back(Ptr); switch (Form) { case Init: // Note, AtomicExpr::getVal1() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case Load: SubExprs.push_back(TheCall->getArg(1)); // Order break; case Copy: case Arithmetic: case Xchg: SubExprs.push_back(TheCall->getArg(2)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 break; case GNUXchg: // Note, AtomicExpr::getVal2() has a special case for this atomic. SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case C11CmpXchg: SubExprs.push_back(TheCall->getArg(3)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(4)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 break; case GNUCmpXchg: SubExprs.push_back(TheCall->getArg(4)); // Order SubExprs.push_back(TheCall->getArg(1)); // Val1 SubExprs.push_back(TheCall->getArg(5)); // OrderFail SubExprs.push_back(TheCall->getArg(2)); // Val2 SubExprs.push_back(TheCall->getArg(3)); // Weak break; } AtomicExpr *AE = new (Context) AtomicExpr(TheCall->getCallee()->getLocStart(), SubExprs, ResultType, Op, TheCall->getRParenLoc()); if ((Op == AtomicExpr::AO__c11_atomic_load || (Op == AtomicExpr::AO__c11_atomic_store)) && Context.AtomicUsesUnsupportedLibcall(AE)) Diag(AE->getLocStart(), diag::err_atomic_load_store_uses_lib) << ((Op == AtomicExpr::AO__c11_atomic_load) ? 0 : 1); return Owned(AE); } /// checkBuiltinArgument - Given a call to a builtin function, perform /// normal type-checking on the given argument, updating the call in /// place. This is useful when a builtin function requires custom /// type-checking for some of its arguments but not necessarily all of /// them. /// /// Returns true on error. static bool checkBuiltinArgument(Sema &S, CallExpr *E, unsigned ArgIndex) { FunctionDecl *Fn = E->getDirectCallee(); assert(Fn && "builtin call without direct callee!"); ParmVarDecl *Param = Fn->getParamDecl(ArgIndex); InitializedEntity Entity = InitializedEntity::InitializeParameter(S.Context, Param); ExprResult Arg = E->getArg(0); Arg = S.PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return true; E->setArg(ArgIndex, Arg.take()); return false; } /// SemaBuiltinAtomicOverloaded - We have a call to a function like /// __sync_fetch_and_add, which is an overloaded function based on the pointer /// type of its first argument. The main ActOnCallExpr routines have already /// promoted the types of arguments because all of these calls are prototyped as /// void(...). /// /// This function goes through and does final semantic checking for these /// builtins, ExprResult Sema::SemaBuiltinAtomicOverloaded(ExprResult TheCallResult) { CallExpr *TheCall = (CallExpr *)TheCallResult.get(); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); // Ensure that we have at least one argument to do type inference from. if (TheCall->getNumArgs() < 1) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1 << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Inspect the first argument of the atomic builtin. This should always be // a pointer type, whose element is an integral scalar or pointer type. // Because it is a pointer type, we don't have to worry about any implicit // casts here. // FIXME: We don't allow floating point scalars as input. Expr *FirstArg = TheCall->getArg(0); ExprResult FirstArgResult = DefaultFunctionArrayLvalueConversion(FirstArg); if (FirstArgResult.isInvalid()) return ExprError(); FirstArg = FirstArgResult.take(); TheCall->setArg(0, FirstArg); const PointerType *pointerType = FirstArg->getType()->getAs(); if (!pointerType) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } QualType ValType = pointerType->getPointeeType(); if (!ValType->isIntegerType() && !ValType->isAnyPointerType() && !ValType->isBlockPointerType()) { Diag(DRE->getLocStart(), diag::err_atomic_builtin_must_be_pointer_intptr) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } switch (ValType.getObjCLifetime()) { case Qualifiers::OCL_None: case Qualifiers::OCL_ExplicitNone: // okay break; case Qualifiers::OCL_Weak: case Qualifiers::OCL_Strong: case Qualifiers::OCL_Autoreleasing: Diag(DRE->getLocStart(), diag::err_arc_atomic_ownership) << ValType << FirstArg->getSourceRange(); return ExprError(); } // Strip any qualifiers off ValType. ValType = ValType.getUnqualifiedType(); // The majority of builtins return a value, but a few have special return // types, so allow them to override appropriately below. QualType ResultType = ValType; // We need to figure out which concrete builtin this maps onto. For example, // __sync_fetch_and_add with a 2 byte object turns into // __sync_fetch_and_add_2. #define BUILTIN_ROW(x) \ { Builtin::BI##x##_1, Builtin::BI##x##_2, Builtin::BI##x##_4, \ Builtin::BI##x##_8, Builtin::BI##x##_16 } static const unsigned BuiltinIndices[][5] = { BUILTIN_ROW(__sync_fetch_and_add), BUILTIN_ROW(__sync_fetch_and_sub), BUILTIN_ROW(__sync_fetch_and_or), BUILTIN_ROW(__sync_fetch_and_and), BUILTIN_ROW(__sync_fetch_and_xor), BUILTIN_ROW(__sync_add_and_fetch), BUILTIN_ROW(__sync_sub_and_fetch), BUILTIN_ROW(__sync_and_and_fetch), BUILTIN_ROW(__sync_or_and_fetch), BUILTIN_ROW(__sync_xor_and_fetch), BUILTIN_ROW(__sync_val_compare_and_swap), BUILTIN_ROW(__sync_bool_compare_and_swap), BUILTIN_ROW(__sync_lock_test_and_set), BUILTIN_ROW(__sync_lock_release), BUILTIN_ROW(__sync_swap) }; #undef BUILTIN_ROW // Determine the index of the size. unsigned SizeIndex; switch (Context.getTypeSizeInChars(ValType).getQuantity()) { case 1: SizeIndex = 0; break; case 2: SizeIndex = 1; break; case 4: SizeIndex = 2; break; case 8: SizeIndex = 3; break; case 16: SizeIndex = 4; break; default: Diag(DRE->getLocStart(), diag::err_atomic_builtin_pointer_size) << FirstArg->getType() << FirstArg->getSourceRange(); return ExprError(); } // Each of these builtins has one pointer argument, followed by some number of // values (0, 1 or 2) followed by a potentially empty varags list of stuff // that we ignore. Find out which row of BuiltinIndices to read from as well // as the number of fixed args. unsigned BuiltinID = FDecl->getBuiltinID(); unsigned BuiltinIndex, NumFixed = 1; switch (BuiltinID) { default: llvm_unreachable("Unknown overloaded atomic builtin!"); case Builtin::BI__sync_fetch_and_add: case Builtin::BI__sync_fetch_and_add_1: case Builtin::BI__sync_fetch_and_add_2: case Builtin::BI__sync_fetch_and_add_4: case Builtin::BI__sync_fetch_and_add_8: case Builtin::BI__sync_fetch_and_add_16: BuiltinIndex = 0; break; case Builtin::BI__sync_fetch_and_sub: case Builtin::BI__sync_fetch_and_sub_1: case Builtin::BI__sync_fetch_and_sub_2: case Builtin::BI__sync_fetch_and_sub_4: case Builtin::BI__sync_fetch_and_sub_8: case Builtin::BI__sync_fetch_and_sub_16: BuiltinIndex = 1; break; case Builtin::BI__sync_fetch_and_or: case Builtin::BI__sync_fetch_and_or_1: case Builtin::BI__sync_fetch_and_or_2: case Builtin::BI__sync_fetch_and_or_4: case Builtin::BI__sync_fetch_and_or_8: case Builtin::BI__sync_fetch_and_or_16: BuiltinIndex = 2; break; case Builtin::BI__sync_fetch_and_and: case Builtin::BI__sync_fetch_and_and_1: case Builtin::BI__sync_fetch_and_and_2: case Builtin::BI__sync_fetch_and_and_4: case Builtin::BI__sync_fetch_and_and_8: case Builtin::BI__sync_fetch_and_and_16: BuiltinIndex = 3; break; case Builtin::BI__sync_fetch_and_xor: case Builtin::BI__sync_fetch_and_xor_1: case Builtin::BI__sync_fetch_and_xor_2: case Builtin::BI__sync_fetch_and_xor_4: case Builtin::BI__sync_fetch_and_xor_8: case Builtin::BI__sync_fetch_and_xor_16: BuiltinIndex = 4; break; case Builtin::BI__sync_add_and_fetch: case Builtin::BI__sync_add_and_fetch_1: case Builtin::BI__sync_add_and_fetch_2: case Builtin::BI__sync_add_and_fetch_4: case Builtin::BI__sync_add_and_fetch_8: case Builtin::BI__sync_add_and_fetch_16: BuiltinIndex = 5; break; case Builtin::BI__sync_sub_and_fetch: case Builtin::BI__sync_sub_and_fetch_1: case Builtin::BI__sync_sub_and_fetch_2: case Builtin::BI__sync_sub_and_fetch_4: case Builtin::BI__sync_sub_and_fetch_8: case Builtin::BI__sync_sub_and_fetch_16: BuiltinIndex = 6; break; case Builtin::BI__sync_and_and_fetch: case Builtin::BI__sync_and_and_fetch_1: case Builtin::BI__sync_and_and_fetch_2: case Builtin::BI__sync_and_and_fetch_4: case Builtin::BI__sync_and_and_fetch_8: case Builtin::BI__sync_and_and_fetch_16: BuiltinIndex = 7; break; case Builtin::BI__sync_or_and_fetch: case Builtin::BI__sync_or_and_fetch_1: case Builtin::BI__sync_or_and_fetch_2: case Builtin::BI__sync_or_and_fetch_4: case Builtin::BI__sync_or_and_fetch_8: case Builtin::BI__sync_or_and_fetch_16: BuiltinIndex = 8; break; case Builtin::BI__sync_xor_and_fetch: case Builtin::BI__sync_xor_and_fetch_1: case Builtin::BI__sync_xor_and_fetch_2: case Builtin::BI__sync_xor_and_fetch_4: case Builtin::BI__sync_xor_and_fetch_8: case Builtin::BI__sync_xor_and_fetch_16: BuiltinIndex = 9; break; case Builtin::BI__sync_val_compare_and_swap: case Builtin::BI__sync_val_compare_and_swap_1: case Builtin::BI__sync_val_compare_and_swap_2: case Builtin::BI__sync_val_compare_and_swap_4: case Builtin::BI__sync_val_compare_and_swap_8: case Builtin::BI__sync_val_compare_and_swap_16: BuiltinIndex = 10; NumFixed = 2; break; case Builtin::BI__sync_bool_compare_and_swap: case Builtin::BI__sync_bool_compare_and_swap_1: case Builtin::BI__sync_bool_compare_and_swap_2: case Builtin::BI__sync_bool_compare_and_swap_4: case Builtin::BI__sync_bool_compare_and_swap_8: case Builtin::BI__sync_bool_compare_and_swap_16: BuiltinIndex = 11; NumFixed = 2; ResultType = Context.BoolTy; break; case Builtin::BI__sync_lock_test_and_set: case Builtin::BI__sync_lock_test_and_set_1: case Builtin::BI__sync_lock_test_and_set_2: case Builtin::BI__sync_lock_test_and_set_4: case Builtin::BI__sync_lock_test_and_set_8: case Builtin::BI__sync_lock_test_and_set_16: BuiltinIndex = 12; break; case Builtin::BI__sync_lock_release: case Builtin::BI__sync_lock_release_1: case Builtin::BI__sync_lock_release_2: case Builtin::BI__sync_lock_release_4: case Builtin::BI__sync_lock_release_8: case Builtin::BI__sync_lock_release_16: BuiltinIndex = 13; NumFixed = 0; ResultType = Context.VoidTy; break; case Builtin::BI__sync_swap: case Builtin::BI__sync_swap_1: case Builtin::BI__sync_swap_2: case Builtin::BI__sync_swap_4: case Builtin::BI__sync_swap_8: case Builtin::BI__sync_swap_16: BuiltinIndex = 14; break; } // Now that we know how many fixed arguments we expect, first check that we // have at least that many. if (TheCall->getNumArgs() < 1+NumFixed) { Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 << 1+NumFixed << TheCall->getNumArgs() << TheCall->getCallee()->getSourceRange(); return ExprError(); } // Get the decl for the concrete builtin from this, we can tell what the // concrete integer type we should convert to is. unsigned NewBuiltinID = BuiltinIndices[BuiltinIndex][SizeIndex]; const char *NewBuiltinName = Context.BuiltinInfo.GetName(NewBuiltinID); FunctionDecl *NewBuiltinDecl; if (NewBuiltinID == BuiltinID) NewBuiltinDecl = FDecl; else { // Perform builtin lookup to avoid redeclaring it. DeclarationName DN(&Context.Idents.get(NewBuiltinName)); LookupResult Res(*this, DN, DRE->getLocStart(), LookupOrdinaryName); LookupName(Res, TUScope, /*AllowBuiltinCreation=*/true); assert(Res.getFoundDecl()); NewBuiltinDecl = dyn_cast(Res.getFoundDecl()); if (NewBuiltinDecl == 0) return ExprError(); } // The first argument --- the pointer --- has a fixed type; we // deduce the types of the rest of the arguments accordingly. Walk // the remaining arguments, converting them to the deduced value type. for (unsigned i = 0; i != NumFixed; ++i) { ExprResult Arg = TheCall->getArg(i+1); // GCC does an implicit conversion to the pointer or integer ValType. This // can fail in some cases (1i -> int**), check for this error case now. // Initialize the argument. InitializedEntity Entity = InitializedEntity::InitializeParameter(Context, ValType, /*consume*/ false); Arg = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (Arg.isInvalid()) return ExprError(); // Okay, we have something that *can* be converted to the right type. Check // to see if there is a potentially weird extension going on here. This can // happen when you do an atomic operation on something like an char* and // pass in 42. The 42 gets converted to char. This is even more strange // for things like 45.123 -> char, etc. // FIXME: Do this check. TheCall->setArg(i+1, Arg.take()); } ASTContext& Context = this->getASTContext(); // Create a new DeclRefExpr to refer to the new decl. DeclRefExpr* NewDRE = DeclRefExpr::Create( Context, DRE->getQualifierLoc(), SourceLocation(), NewBuiltinDecl, /*enclosing*/ false, DRE->getLocation(), Context.BuiltinFnTy, DRE->getValueKind()); // Set the callee in the CallExpr. // FIXME: This loses syntactic information. QualType CalleePtrTy = Context.getPointerType(NewBuiltinDecl->getType()); ExprResult PromotedCall = ImpCastExprToType(NewDRE, CalleePtrTy, CK_BuiltinFnToFnPtr); TheCall->setCallee(PromotedCall.take()); // Change the result type of the call to match the original value type. This // is arbitrary, but the codegen for these builtins ins design to handle it // gracefully. TheCall->setType(ResultType); return TheCallResult; } /// CheckObjCString - Checks that the argument to the builtin /// CFString constructor is correct /// Note: It might also make sense to do the UTF-16 conversion here (would /// simplify the backend). bool Sema::CheckObjCString(Expr *Arg) { Arg = Arg->IgnoreParenCasts(); StringLiteral *Literal = dyn_cast(Arg); if (!Literal || !Literal->isAscii()) { Diag(Arg->getLocStart(), diag::err_cfstring_literal_not_string_constant) << Arg->getSourceRange(); return true; } if (Literal->containsNonAsciiOrNull()) { StringRef String = Literal->getString(); unsigned NumBytes = String.size(); SmallVector ToBuf(NumBytes); const UTF8 *FromPtr = (const UTF8 *)String.data(); UTF16 *ToPtr = &ToBuf[0]; ConversionResult Result = ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr, ToPtr + NumBytes, strictConversion); // Check for conversion failure. if (Result != conversionOK) Diag(Arg->getLocStart(), diag::warn_cfstring_truncated) << Arg->getSourceRange(); } return false; } /// SemaBuiltinVAStart - Check the arguments to __builtin_va_start for validity. /// Emit an error and return true on failure, return false on success. bool Sema::SemaBuiltinVAStart(CallExpr *TheCall) { Expr *Fn = TheCall->getCallee(); if (TheCall->getNumArgs() > 2) { Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << Fn->getSourceRange() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); return true; } if (TheCall->getNumArgs() < 2) { return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs(); } // Type-check the first argument normally. if (checkBuiltinArgument(*this, TheCall, 0)) return true; // Determine whether the current function is variadic or not. BlockScopeInfo *CurBlock = getCurBlock(); bool isVariadic; if (CurBlock) isVariadic = CurBlock->TheDecl->isVariadic(); else if (FunctionDecl *FD = getCurFunctionDecl()) isVariadic = FD->isVariadic(); else isVariadic = getCurMethodDecl()->isVariadic(); if (!isVariadic) { Diag(Fn->getLocStart(), diag::err_va_start_used_in_non_variadic_function); return true; } // Verify that the second argument to the builtin is the last argument of the // current function or method. bool SecondArgIsLastNamedArgument = false; const Expr *Arg = TheCall->getArg(1)->IgnoreParenCasts(); // These are valid if SecondArgIsLastNamedArgument is false after the next // block. QualType Type; SourceLocation ParamLoc; if (const DeclRefExpr *DR = dyn_cast(Arg)) { if (const ParmVarDecl *PV = dyn_cast(DR->getDecl())) { // FIXME: This isn't correct for methods (results in bogus warning). // Get the last formal in the current function. const ParmVarDecl *LastArg; if (CurBlock) LastArg = *(CurBlock->TheDecl->param_end()-1); else if (FunctionDecl *FD = getCurFunctionDecl()) LastArg = *(FD->param_end()-1); else LastArg = *(getCurMethodDecl()->param_end()-1); SecondArgIsLastNamedArgument = PV == LastArg; Type = PV->getType(); ParamLoc = PV->getLocation(); } } if (!SecondArgIsLastNamedArgument) Diag(TheCall->getArg(1)->getLocStart(), diag::warn_second_parameter_of_va_start_not_last_named_argument); else if (Type->isReferenceType()) { Diag(Arg->getLocStart(), diag::warn_va_start_of_reference_type_is_undefined); Diag(ParamLoc, diag::note_parameter_type) << Type; } TheCall->setType(Context.VoidTy); return false; } /// SemaBuiltinUnorderedCompare - Handle functions like __builtin_isgreater and /// friends. This is declared to take (...), so we have to check everything. bool Sema::SemaBuiltinUnorderedCompare(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << 2 << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > 2) return Diag(TheCall->getArg(2)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << SourceRange(TheCall->getArg(2)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); ExprResult OrigArg0 = TheCall->getArg(0); ExprResult OrigArg1 = TheCall->getArg(1); // Do standard promotions between the two arguments, returning their common // type. QualType Res = UsualArithmeticConversions(OrigArg0, OrigArg1, false); if (OrigArg0.isInvalid() || OrigArg1.isInvalid()) return true; // Make sure any conversions are pushed back into the call; this is // type safe since unordered compare builtins are declared as "_Bool // foo(...)". TheCall->setArg(0, OrigArg0.get()); TheCall->setArg(1, OrigArg1.get()); if (OrigArg0.get()->isTypeDependent() || OrigArg1.get()->isTypeDependent()) return false; // If the common type isn't a real floating type, then the arguments were // invalid for this operation. if (Res.isNull() || !Res->isRealFloatingType()) return Diag(OrigArg0.get()->getLocStart(), diag::err_typecheck_call_invalid_ordered_compare) << OrigArg0.get()->getType() << OrigArg1.get()->getType() << SourceRange(OrigArg0.get()->getLocStart(), OrigArg1.get()->getLocEnd()); return false; } /// SemaBuiltinSemaBuiltinFPClassification - Handle functions like /// __builtin_isnan and friends. This is declared to take (...), so we have /// to check everything. We expect the last argument to be a floating point /// value. bool Sema::SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs) { if (TheCall->getNumArgs() < NumArgs) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args) << 0 << NumArgs << TheCall->getNumArgs()/*function call*/; if (TheCall->getNumArgs() > NumArgs) return Diag(TheCall->getArg(NumArgs)->getLocStart(), diag::err_typecheck_call_too_many_args) << 0 /*function call*/ << NumArgs << TheCall->getNumArgs() << SourceRange(TheCall->getArg(NumArgs)->getLocStart(), (*(TheCall->arg_end()-1))->getLocEnd()); Expr *OrigArg = TheCall->getArg(NumArgs-1); if (OrigArg->isTypeDependent()) return false; // This operation requires a non-_Complex floating-point number. if (!OrigArg->getType()->isRealFloatingType()) return Diag(OrigArg->getLocStart(), diag::err_typecheck_call_invalid_unary_fp) << OrigArg->getType() << OrigArg->getSourceRange(); // If this is an implicit conversion from float -> double, remove it. if (ImplicitCastExpr *Cast = dyn_cast(OrigArg)) { Expr *CastArg = Cast->getSubExpr(); if (CastArg->getType()->isSpecificBuiltinType(BuiltinType::Float)) { assert(Cast->getType()->isSpecificBuiltinType(BuiltinType::Double) && "promotion from float to double is the only expected cast here"); Cast->setSubExpr(0); TheCall->setArg(NumArgs-1, CastArg); } } return false; } /// SemaBuiltinShuffleVector - Handle __builtin_shufflevector. // This is declared to take (...), so we have to check everything. ExprResult Sema::SemaBuiltinShuffleVector(CallExpr *TheCall) { if (TheCall->getNumArgs() < 2) return ExprError(Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_few_args_at_least) << 0 /*function call*/ << 2 << TheCall->getNumArgs() << TheCall->getSourceRange()); // Determine which of the following types of shufflevector we're checking: // 1) unary, vector mask: (lhs, mask) // 2) binary, vector mask: (lhs, rhs, mask) // 3) binary, scalar mask: (lhs, rhs, index, ..., index) QualType resType = TheCall->getArg(0)->getType(); unsigned numElements = 0; if (!TheCall->getArg(0)->isTypeDependent() && !TheCall->getArg(1)->isTypeDependent()) { QualType LHSType = TheCall->getArg(0)->getType(); QualType RHSType = TheCall->getArg(1)->getType(); if (!LHSType->isVectorType() || !RHSType->isVectorType()) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_non_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); numElements = LHSType->getAs()->getNumElements(); unsigned numResElements = TheCall->getNumArgs() - 2; // Check to see if we have a call with 2 vector arguments, the unary shuffle // with mask. If so, verify that RHS is an integer vector type with the // same number of elts as lhs. if (TheCall->getNumArgs() == 2) { if (!RHSType->hasIntegerRepresentation() || RHSType->getAs()->getNumElements() != numElements) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(1)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (!Context.hasSameUnqualifiedType(LHSType, RHSType)) { return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_incompatible_vector) << SourceRange(TheCall->getArg(0)->getLocStart(), TheCall->getArg(1)->getLocEnd())); } else if (numElements != numResElements) { QualType eltType = LHSType->getAs()->getElementType(); resType = Context.getVectorType(eltType, numResElements, VectorType::GenericVector); } } for (unsigned i = 2; i < TheCall->getNumArgs(); i++) { if (TheCall->getArg(i)->isTypeDependent() || TheCall->getArg(i)->isValueDependent()) continue; llvm::APSInt Result(32); if (!TheCall->getArg(i)->isIntegerConstantExpr(Result, Context)) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_nonconstant_argument) << TheCall->getArg(i)->getSourceRange()); // Allow -1 which will be translated to undef in the IR. if (Result.isSigned() && Result.isAllOnesValue()) continue; if (Result.getActiveBits() > 64 || Result.getZExtValue() >= numElements*2) return ExprError(Diag(TheCall->getLocStart(), diag::err_shufflevector_argument_too_large) << TheCall->getArg(i)->getSourceRange()); } SmallVector exprs; for (unsigned i = 0, e = TheCall->getNumArgs(); i != e; i++) { exprs.push_back(TheCall->getArg(i)); TheCall->setArg(i, 0); } return Owned(new (Context) ShuffleVectorExpr(Context, exprs, resType, TheCall->getCallee()->getLocStart(), TheCall->getRParenLoc())); } /// SemaConvertVectorExpr - Handle __builtin_convertvector ExprResult Sema::SemaConvertVectorExpr(Expr *E, TypeSourceInfo *TInfo, SourceLocation BuiltinLoc, SourceLocation RParenLoc) { ExprValueKind VK = VK_RValue; ExprObjectKind OK = OK_Ordinary; QualType DstTy = TInfo->getType(); QualType SrcTy = E->getType(); if (!SrcTy->isVectorType() && !SrcTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector) << E->getSourceRange()); if (!DstTy->isVectorType() && !DstTy->isDependentType()) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_non_vector_type)); if (!SrcTy->isDependentType() && !DstTy->isDependentType()) { unsigned SrcElts = SrcTy->getAs()->getNumElements(); unsigned DstElts = DstTy->getAs()->getNumElements(); if (SrcElts != DstElts) return ExprError(Diag(BuiltinLoc, diag::err_convertvector_incompatible_vector) << E->getSourceRange()); } return Owned(new (Context) ConvertVectorExpr(E, TInfo, DstTy, VK, OK, BuiltinLoc, RParenLoc)); } /// SemaBuiltinPrefetch - Handle __builtin_prefetch. // This is declared to take (const void*, ...) and can take two // optional constant int args. bool Sema::SemaBuiltinPrefetch(CallExpr *TheCall) { unsigned NumArgs = TheCall->getNumArgs(); if (NumArgs > 3) return Diag(TheCall->getLocEnd(), diag::err_typecheck_call_too_many_args_at_most) << 0 /*function call*/ << 3 << NumArgs << TheCall->getSourceRange(); // Argument 0 is checked for us and the remaining arguments must be // constant integers. for (unsigned i = 1; i != NumArgs; ++i) { Expr *Arg = TheCall->getArg(i); // We can't check the value of a dependent argument. if (Arg->isTypeDependent() || Arg->isValueDependent()) continue; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, i, Result)) return true; // FIXME: gcc issues a warning and rewrites these to 0. These // seems especially odd for the third argument since the default // is 3. if (i == 1) { if (Result.getLimitedValue() > 1) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "1" << Arg->getSourceRange(); } else { if (Result.getLimitedValue() > 3) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << Arg->getSourceRange(); } } return false; } /// SemaBuiltinMMPrefetch - Handle _mm_prefetch. // This is declared to take (const char*, int) bool Sema::SemaBuiltinMMPrefetch(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(1); // We can't check the value of a dependent argument. if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; llvm::APSInt Result; if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (Result.getLimitedValue() > 3) return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << Arg->getSourceRange(); return false; } /// SemaBuiltinConstantArg - Handle a check if argument ArgNum of CallExpr /// TheCall is a constant expression. bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, llvm::APSInt &Result) { Expr *Arg = TheCall->getArg(ArgNum); DeclRefExpr *DRE =cast(TheCall->getCallee()->IgnoreParenCasts()); FunctionDecl *FDecl = cast(DRE->getDecl()); if (Arg->isTypeDependent() || Arg->isValueDependent()) return false; if (!Arg->isIntegerConstantExpr(Result, Context)) return Diag(TheCall->getLocStart(), diag::err_constant_integer_arg_type) << FDecl->getDeclName() << Arg->getSourceRange(); return false; } /// SemaBuiltinObjectSize - Handle __builtin_object_size(void *ptr, /// int type). This simply type checks that type is one of the defined /// constants (0-3). // For compatibility check 0-3, llvm only handles 0 and 2. bool Sema::SemaBuiltinObjectSize(CallExpr *TheCall) { llvm::APSInt Result; // We can't check the value of a dependent argument. if (TheCall->getArg(1)->isTypeDependent() || TheCall->getArg(1)->isValueDependent()) return false; // Check constant-ness first. if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; Expr *Arg = TheCall->getArg(1); if (Result.getSExtValue() < 0 || Result.getSExtValue() > 3) { return Diag(TheCall->getLocStart(), diag::err_argument_invalid_range) << "0" << "3" << SourceRange(Arg->getLocStart(), Arg->getLocEnd()); } return false; } /// SemaBuiltinLongjmp - Handle __builtin_longjmp(void *env[5], int val). /// This checks that val is a constant 1. bool Sema::SemaBuiltinLongjmp(CallExpr *TheCall) { Expr *Arg = TheCall->getArg(1); llvm::APSInt Result; // TODO: This is less than ideal. Overload this to take a value. if (SemaBuiltinConstantArg(TheCall, 1, Result)) return true; if (Result != 1) return Diag(TheCall->getLocStart(), diag::err_builtin_longjmp_invalid_val) << SourceRange(Arg->getLocStart(), Arg->getLocEnd()); return false; } namespace { enum StringLiteralCheckType { SLCT_NotALiteral, SLCT_UncheckedLiteral, SLCT_CheckedLiteral }; } // Determine if an expression is a string literal or constant string. // If this function returns false on the arguments to a function expecting a // format string, we will usually need to emit a warning. // True string literals are then checked by CheckFormatString. static StringLiteralCheckType checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, Sema::FormatStringType Type, Sema::VariadicCallType CallType, bool InFunctionCall, llvm::SmallBitVector &CheckedVarArgs) { tryAgain: if (E->isTypeDependent() || E->isValueDependent()) return SLCT_NotALiteral; E = E->IgnoreParenCasts(); if (E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) // Technically -Wformat-nonliteral does not warn about this case. // The behavior of printf and friends in this case is implementation // dependent. Ideally if the format string cannot be null then // it should have a 'nonnull' attribute in the function prototype. return SLCT_UncheckedLiteral; switch (E->getStmtClass()) { case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { // The expression is a literal if both sub-expressions were, and it was // completely checked only if both sub-expressions were checked. const AbstractConditionalOperator *C = cast(E); StringLiteralCheckType Left = checkFormatStringExpr(S, C->getTrueExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); if (Left == SLCT_NotALiteral) return SLCT_NotALiteral; StringLiteralCheckType Right = checkFormatStringExpr(S, C->getFalseExpr(), Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); return Left < Right ? Left : Right; } case Stmt::ImplicitCastExprClass: { E = cast(E)->getSubExpr(); goto tryAgain; } case Stmt::OpaqueValueExprClass: if (const Expr *src = cast(E)->getSourceExpr()) { E = src; goto tryAgain; } return SLCT_NotALiteral; case Stmt::PredefinedExprClass: // While __func__, etc., are technically not string literals, they // cannot contain format specifiers and thus are not a security // liability. return SLCT_UncheckedLiteral; case Stmt::DeclRefExprClass: { const DeclRefExpr *DR = cast(E); // As an exception, do not flag errors for variables binding to // const string literals. if (const VarDecl *VD = dyn_cast(DR->getDecl())) { bool isConstant = false; QualType T = DR->getType(); if (const ArrayType *AT = S.Context.getAsArrayType(T)) { isConstant = AT->getElementType().isConstant(S.Context); } else if (const PointerType *PT = T->getAs()) { isConstant = T.isConstant(S.Context) && PT->getPointeeType().isConstant(S.Context); } else if (T->isObjCObjectPointerType()) { // In ObjC, there is usually no "const ObjectPointer" type, // so don't check if the pointee type is constant. isConstant = T.isConstant(S.Context); } if (isConstant) { if (const Expr *Init = VD->getAnyInitializer()) { // Look through initializers like const char c[] = { "foo" } if (const InitListExpr *InitList = dyn_cast(Init)) { if (InitList->isStringLiteralInit()) Init = InitList->getInit(0)->IgnoreParenImpCasts(); } return checkFormatStringExpr(S, Init, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*InFunctionCall*/false, CheckedVarArgs); } } // For vprintf* functions (i.e., HasVAListArg==true), we add a // special check to see if the format string is a function parameter // of the function calling the printf function. If the function // has an attribute indicating it is a printf-like function, then we // should suppress warnings concerning non-literals being used in a call // to a vprintf function. For example: // // void // logmessage(char const *fmt __attribute__ (format (printf, 1, 2)), ...){ // va_list ap; // va_start(ap, fmt); // vprintf(fmt, ap); // Do NOT emit a warning about "fmt". // ... // } if (HasVAListArg) { if (const ParmVarDecl *PV = dyn_cast(VD)) { if (const NamedDecl *ND = dyn_cast(PV->getDeclContext())) { int PVIndex = PV->getFunctionScopeIndex() + 1; for (specific_attr_iterator i = ND->specific_attr_begin(), e = ND->specific_attr_end(); i != e ; ++i) { FormatAttr *PVFormat = *i; // adjust for implicit parameter if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) ++PVIndex; // We also check if the formats are compatible. // We can't pass a 'scanf' string to a 'printf' function. if (PVIndex == PVFormat->getFormatIdx() && Type == S.GetFormatStringType(PVFormat)) return SLCT_UncheckedLiteral; } } } } } return SLCT_NotALiteral; } case Stmt::CallExprClass: case Stmt::CXXMemberCallExprClass: { const CallExpr *CE = cast(E); if (const NamedDecl *ND = dyn_cast_or_null(CE->getCalleeDecl())) { if (const FormatArgAttr *FA = ND->getAttr()) { unsigned ArgIndex = FA->getFormatIdx(); if (const CXXMethodDecl *MD = dyn_cast(ND)) if (MD->isInstance()) --ArgIndex; const Expr *Arg = CE->getArg(ArgIndex - 1); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } else if (const FunctionDecl *FD = dyn_cast(ND)) { unsigned BuiltinID = FD->getBuiltinID(); if (BuiltinID == Builtin::BI__builtin___CFStringMakeConstantString || BuiltinID == Builtin::BI__builtin___NSStringMakeConstantString) { const Expr *Arg = CE->getArg(0); return checkFormatStringExpr(S, Arg, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, InFunctionCall, CheckedVarArgs); } } } return SLCT_NotALiteral; } case Stmt::ObjCStringLiteralClass: case Stmt::StringLiteralClass: { const StringLiteral *StrE = NULL; if (const ObjCStringLiteral *ObjCFExpr = dyn_cast(E)) StrE = ObjCFExpr->getString(); else StrE = cast(E); if (StrE) { S.CheckFormatString(StrE, E, Args, HasVAListArg, format_idx, firstDataArg, Type, InFunctionCall, CallType, CheckedVarArgs); return SLCT_CheckedLiteral; } return SLCT_NotALiteral; } default: return SLCT_NotALiteral; } } Sema::FormatStringType Sema::GetFormatStringType(const FormatAttr *Format) { return llvm::StringSwitch(Format->getType()->getName()) .Case("scanf", FST_Scanf) .Cases("printf", "printf0", FST_Printf) .Cases("NSString", "CFString", FST_NSString) .Case("strftime", FST_Strftime) .Case("strfmon", FST_Strfmon) .Cases("kprintf", "cmn_err", "vcmn_err", "zcmn_err", FST_Kprintf) .Default(FST_Unknown); } /// CheckFormatArguments - Check calls to printf and scanf (and similar /// functions) for correct use of format strings. /// Returns true if a format string has been fully checked. bool Sema::CheckFormatArguments(const FormatAttr *Format, ArrayRef Args, bool IsCXXMember, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { FormatStringInfo FSI; if (getFormatStringInfo(Format, IsCXXMember, &FSI)) return CheckFormatArguments(Args, FSI.HasVAListArg, FSI.FormatIdx, FSI.FirstDataArg, GetFormatStringType(Format), CallType, Loc, Range, CheckedVarArgs); return false; } bool Sema::CheckFormatArguments(ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, VariadicCallType CallType, SourceLocation Loc, SourceRange Range, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: printf/scanf-like function is called with no format string. if (format_idx >= Args.size()) { Diag(Loc, diag::warn_missing_format_string) << Range; return false; } const Expr *OrigFormatExpr = Args[format_idx]->IgnoreParenCasts(); // CHECK: format string is not a string literal. // // Dynamically generated format strings are difficult to // automatically vet at compile time. Requiring that format strings // are string literals: (1) permits the checking of format strings by // the compiler and thereby (2) can practically remove the source of // many format string exploits. // Format string can be either ObjC string (e.g. @@"%d") or // C string (e.g. "%d") // ObjC string uses the same format specifiers as C string, so we can use // the same format string checking logic for both ObjC and C strings. StringLiteralCheckType CT = checkFormatStringExpr(*this, OrigFormatExpr, Args, HasVAListArg, format_idx, firstDataArg, Type, CallType, /*IsFunctionCall*/true, CheckedVarArgs); if (CT != SLCT_NotALiteral) // Literal format string found, check done! return CT == SLCT_CheckedLiteral; // Strftime is particular as it always uses a single 'time' argument, // so it is safe to pass a non-literal string. if (Type == FST_Strftime) return false; // Do not emit diag when the string param is a macro expansion and the // format is either NSString or CFString. This is a hack to prevent // diag when using the NSLocalizedString and CFCopyLocalizedString macros // which are usually used in place of NS and CF string literals. if (Type == FST_NSString && SourceMgr.isInSystemMacro(Args[format_idx]->getLocStart())) return false; // If there are no arguments specified, warn with -Wformat-security, otherwise // warn only with -Wformat-nonliteral. if (Args.size() == firstDataArg) Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral_noargs) << OrigFormatExpr->getSourceRange(); else Diag(Args[format_idx]->getLocStart(), diag::warn_format_nonliteral) << OrigFormatExpr->getSourceRange(); return false; } namespace { class CheckFormatHandler : public analyze_format_string::FormatStringHandler { protected: Sema &S; const StringLiteral *FExpr; const Expr *OrigFormatExpr; const unsigned FirstDataArg; const unsigned NumDataArgs; const char *Beg; // Start of format string. const bool HasVAListArg; ArrayRef Args; unsigned FormatIdx; llvm::SmallBitVector CoveredArgs; bool usesPositionalArgs; bool atFirstArg; bool inFunctionCall; Sema::VariadicCallType CallType; llvm::SmallBitVector &CheckedVarArgs; public: CheckFormatHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType callType, llvm::SmallBitVector &CheckedVarArgs) : S(s), FExpr(fexpr), OrigFormatExpr(origFormatExpr), FirstDataArg(firstDataArg), NumDataArgs(numDataArgs), Beg(beg), HasVAListArg(hasVAListArg), Args(Args), FormatIdx(formatIdx), usesPositionalArgs(false), atFirstArg(true), inFunctionCall(inFunctionCall), CallType(callType), CheckedVarArgs(CheckedVarArgs) { CoveredArgs.resize(numDataArgs); CoveredArgs.reset(); } void DoneProcessing(); void HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen); void HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID); void HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen); void HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen); virtual void HandlePosition(const char *startPos, unsigned posLen); virtual void HandleInvalidPosition(const char *startSpecifier, unsigned specifierLen, analyze_format_string::PositionContext p); virtual void HandleZeroPosition(const char *startPos, unsigned posLen); void HandleNullChar(const char *nullCharacter); template static void EmitFormatDiagnostic(Sema &S, bool inFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); protected: bool HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen); void HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen); SourceRange getFormatStringRange(); CharSourceRange getSpecifierRange(const char *startSpecifier, unsigned specifierLen); SourceLocation getLocationOfByte(const char *x); const Expr *getDataArg(unsigned i) const; bool CheckNumArgs(const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex); template void EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation StringLoc, bool IsStringLocation, Range StringRange, ArrayRef Fixit = None); void CheckPositionalAndNonpositionalArgs( const analyze_format_string::FormatSpecifier *FS); }; } SourceRange CheckFormatHandler::getFormatStringRange() { return OrigFormatExpr->getSourceRange(); } CharSourceRange CheckFormatHandler:: getSpecifierRange(const char *startSpecifier, unsigned specifierLen) { SourceLocation Start = getLocationOfByte(startSpecifier); SourceLocation End = getLocationOfByte(startSpecifier + specifierLen - 1); // Advance the end SourceLocation by one due to half-open ranges. End = End.getLocWithOffset(1); return CharSourceRange::getCharRange(Start, End); } SourceLocation CheckFormatHandler::getLocationOfByte(const char *x) { return S.getLocationOfStringLiteralByte(FExpr, x - Beg); } void CheckFormatHandler::HandleIncompleteSpecifier(const char *startSpecifier, unsigned specifierLen){ EmitFormatDiagnostic(S.PDiag(diag::warn_printf_incomplete_specifier), getLocationOfByte(startSpecifier), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } void CheckFormatHandler::HandleInvalidLengthModifier( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned DiagID) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { FixItHint Hint; if (DiagID == diag::warn_format_nonsensical_length) Hint = FixItHint::CreateRemoval(LMRange); EmitFormatDiagnostic(S.PDiag(DiagID) << LM.toString() << CS.toString(), getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), Hint); } } void CheckFormatHandler::HandleNonStandardLengthModifier( const analyze_format_string::FormatSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; const LengthModifier &LM = FS.getLengthModifier(); CharSourceRange LMRange = getSpecifierRange(LM.getStart(), LM.getLength()); // See if we know how to fix this length modifier. Optional FixedLM = FS.getCorrectedLengthModifier(); if (FixedLM) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); S.Diag(getLocationOfByte(LM.getStart()), diag::note_format_fix_specifier) << FixedLM->toString() << FixItHint::CreateReplacement(LMRange, FixedLM->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << LM.toString() << 0, getLocationOfByte(LM.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandleNonStandardConversionSpecifier( const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; // See if we know how to fix this conversion specifier. Optional FixedCS = CS.getStandardSpecifier(); if (FixedCS) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); CharSourceRange CSRange = getSpecifierRange(CS.getStart(), CS.getLength()); S.Diag(getLocationOfByte(CS.getStart()), diag::note_format_fix_specifier) << FixedCS->toString() << FixItHint::CreateReplacement(CSRange, FixedCS->toString()); } else { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard) << CS.toString() << /*conversion specifier*/1, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); } } void CheckFormatHandler::HandlePosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_non_standard_positional_arg), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleInvalidPosition(const char *startPos, unsigned posLen, analyze_format_string::PositionContext p) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_positional_specifier) << (unsigned) p, getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleZeroPosition(const char *startPos, unsigned posLen) { EmitFormatDiagnostic(S.PDiag(diag::warn_format_zero_positional_specifier), getLocationOfByte(startPos), /*IsStringLocation*/true, getSpecifierRange(startPos, posLen)); } void CheckFormatHandler::HandleNullChar(const char *nullCharacter) { if (!isa(OrigFormatExpr)) { // The presence of a null character is likely an error. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_format_string_contains_null_char), getLocationOfByte(nullCharacter), /*IsStringLocation*/true, getFormatStringRange()); } } // Note that this may return NULL if there was an error parsing or building // one of the argument expressions. const Expr *CheckFormatHandler::getDataArg(unsigned i) const { return Args[FirstDataArg + i]; } void CheckFormatHandler::DoneProcessing() { // Does the number of data arguments exceed the number of // format conversions in the format string? if (!HasVAListArg) { // Find any arguments that weren't covered. CoveredArgs.flip(); signed notCoveredArg = CoveredArgs.find_first(); if (notCoveredArg >= 0) { assert((unsigned)notCoveredArg < NumDataArgs); if (const Expr *E = getDataArg((unsigned) notCoveredArg)) { SourceLocation Loc = E->getLocStart(); if (!S.getSourceManager().isInSystemMacro(Loc)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_data_arg_not_used), Loc, /*IsStringLocation*/false, getFormatStringRange()); } } } } } bool CheckFormatHandler::HandleInvalidConversionSpecifier(unsigned argIndex, SourceLocation Loc, const char *startSpec, unsigned specifierLen, const char *csStart, unsigned csLen) { bool keepGoing = true; if (argIndex < NumDataArgs) { // Consider the argument coverered, even though the specifier doesn't // make sense. CoveredArgs.set(argIndex); } else { // If argIndex exceeds the number of data arguments we // don't issue a warning because that is just a cascade of warnings (and // they may have intended '%%' anyway). We don't want to continue processing // the format string after this point, however, as we will like just get // gibberish when trying to match arguments. keepGoing = false; } EmitFormatDiagnostic(S.PDiag(diag::warn_format_invalid_conversion) << StringRef(csStart, csLen), Loc, /*IsStringLocation*/true, getSpecifierRange(startSpec, specifierLen)); return keepGoing; } void CheckFormatHandler::HandlePositionalNonpositionalArgs(SourceLocation Loc, const char *startSpec, unsigned specifierLen) { EmitFormatDiagnostic( S.PDiag(diag::warn_format_mix_positional_nonpositional_args), Loc, /*isStringLoc*/true, getSpecifierRange(startSpec, specifierLen)); } bool CheckFormatHandler::CheckNumArgs( const analyze_format_string::FormatSpecifier &FS, const analyze_format_string::ConversionSpecifier &CS, const char *startSpecifier, unsigned specifierLen, unsigned argIndex) { if (argIndex >= NumDataArgs) { PartialDiagnostic PDiag = FS.usesPositionalArg() ? (S.PDiag(diag::warn_printf_positional_arg_exceeds_data_args) << (argIndex+1) << NumDataArgs) : S.PDiag(diag::warn_printf_insufficient_data_args); EmitFormatDiagnostic( PDiag, getLocationOfByte(CS.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); return false; } return true; } template void CheckFormatHandler::EmitFormatDiagnostic(PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { EmitFormatDiagnostic(S, inFunctionCall, Args[FormatIdx], PDiag, Loc, IsStringLocation, StringRange, FixIt); } /// \brief If the format string is not within the funcion call, emit a note /// so that the function call and string are in diagnostic messages. /// /// \param InFunctionCall if true, the format string is within the function /// call and only one diagnostic message will be produced. Otherwise, an /// extra note will be emitted pointing to location of the format string. /// /// \param ArgumentExpr the expression that is passed as the format string /// argument in the function call. Used for getting locations when two /// diagnostics are emitted. /// /// \param PDiag the callee should already have provided any strings for the /// diagnostic message. This function only adds locations and fixits /// to diagnostics. /// /// \param Loc primary location for diagnostic. If two diagnostics are /// required, one will be at Loc and a new SourceLocation will be created for /// the other one. /// /// \param IsStringLocation if true, Loc points to the format string should be /// used for the note. Otherwise, Loc points to the argument list and will /// be used with PDiag. /// /// \param StringRange some or all of the string to highlight. This is /// templated so it can accept either a CharSourceRange or a SourceRange. /// /// \param FixIt optional fix it hint for the format string. template void CheckFormatHandler::EmitFormatDiagnostic(Sema &S, bool InFunctionCall, const Expr *ArgumentExpr, PartialDiagnostic PDiag, SourceLocation Loc, bool IsStringLocation, Range StringRange, ArrayRef FixIt) { if (InFunctionCall) { const Sema::SemaDiagnosticBuilder &D = S.Diag(Loc, PDiag); D << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { D << *I; } } else { S.Diag(IsStringLocation ? ArgumentExpr->getExprLoc() : Loc, PDiag) << ArgumentExpr->getSourceRange(); const Sema::SemaDiagnosticBuilder &Note = S.Diag(IsStringLocation ? Loc : StringRange.getBegin(), diag::note_format_string_defined); Note << StringRange; for (ArrayRef::iterator I = FixIt.begin(), E = FixIt.end(); I != E; ++I) { Note << *I; } } } //===--- CHECK: Printf format string checking ------------------------------===// namespace { class CheckPrintfHandler : public CheckFormatHandler { bool ObjCContext; public: CheckPrintfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, bool isObjC, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs), ObjCContext(isObjC) {} bool HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E); bool HandleAmount(const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen); void HandleInvalidAmount(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen); void HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); void HandleIgnoredFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen); bool checkForCStrMembers(const analyze_printf::ArgType &AT, const Expr *E); }; } bool CheckPrintfHandler::HandleInvalidPrintfConversionSpecifier( const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckPrintfHandler::HandleAmount( const analyze_format_string::OptionalAmount &Amt, unsigned k, const char *startSpecifier, unsigned specifierLen) { if (Amt.hasDataArgument()) { if (!HasVAListArg) { unsigned argIndex = Amt.getArgIndex(); if (argIndex >= NumDataArgs) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_missing_arg) << k, getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } // Type check the data argument. It should be an 'int'. // Although not in conformance with C99, we also allow the argument to be // an 'unsigned int' as that is a reasonably safe case. GCC also // doesn't emit a warning for that case. CoveredArgs.set(argIndex); const Expr *Arg = getDataArg(argIndex); if (!Arg) return false; QualType T = Arg->getType(); const analyze_printf::ArgType &AT = Amt.getArgType(S.Context); assert(AT.isValid()); if (!AT.matchesType(S.Context, T)) { EmitFormatDiagnostic(S.PDiag(diag::warn_printf_asterisk_wrong_type) << k << AT.getRepresentativeTypeName(S.Context) << T << Arg->getSourceRange(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen)); // Don't do any more checking. We will just emit // spurious errors. return false; } } } return true; } void CheckPrintfHandler::HandleInvalidAmount( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalAmount &Amt, unsigned type, const char *startSpecifier, unsigned specifierLen) { const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); FixItHint fixit = Amt.getHowSpecified() == analyze_printf::OptionalAmount::Constant ? FixItHint::CreateRemoval(getSpecifierRange(Amt.getStart(), Amt.getConstantLength())) : FixItHint(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_optional_amount) << type << CS.toString(), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), fixit); } void CheckPrintfHandler::HandleFlag(const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about pointless flag with a fixit removal. const analyze_printf::PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); EmitFormatDiagnostic(S.PDiag(diag::warn_printf_nonsensical_flag) << flag.toString() << CS.toString(), getLocationOfByte(flag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(flag.getPosition(), 1))); } void CheckPrintfHandler::HandleIgnoredFlag( const analyze_printf::PrintfSpecifier &FS, const analyze_printf::OptionalFlag &ignoredFlag, const analyze_printf::OptionalFlag &flag, const char *startSpecifier, unsigned specifierLen) { // Warn about ignored flag with a fixit removal. EmitFormatDiagnostic(S.PDiag(diag::warn_printf_ignored_flag) << ignoredFlag.toString() << flag.toString(), getLocationOfByte(ignoredFlag.getPosition()), /*IsStringLocation*/true, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateRemoval( getSpecifierRange(ignoredFlag.getPosition(), 1))); } // Determines if the specified is a C++ class or struct containing // a member with the specified name and kind (e.g. a CXXMethodDecl named // "c_str()"). template static llvm::SmallPtrSet CXXRecordMembersNamed(StringRef Name, Sema &S, QualType Ty) { const RecordType *RT = Ty->getAs(); llvm::SmallPtrSet Results; if (!RT) return Results; const CXXRecordDecl *RD = dyn_cast(RT->getDecl()); if (!RD || !RD->getDefinition()) return Results; LookupResult R(S, &S.PP.getIdentifierTable().get(Name), SourceLocation(), Sema::LookupMemberName); R.suppressDiagnostics(); // We just need to include all members of the right kind turned up by the // filter, at this point. if (S.LookupQualifiedName(R, RT->getDecl())) for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) { NamedDecl *decl = (*I)->getUnderlyingDecl(); if (MemberKind *FK = dyn_cast(decl)) Results.insert(FK); } return Results; } /// Check if we could call '.c_str()' on an object. /// /// FIXME: This returns the wrong results in some cases (if cv-qualifiers don't /// allow the call, or if it would be ambiguous). bool Sema::hasCStrMethod(const Expr *E) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", *this, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) if ((*MI)->getMinRequiredArguments() == 0) return true; return false; } // Check if a (w)string was passed when a (w)char* was needed, and offer a // better diagnostic if so. AT is assumed to be valid. // Returns true when a c_str() conversion method is found. bool CheckPrintfHandler::checkForCStrMembers( const analyze_printf::ArgType &AT, const Expr *E) { typedef llvm::SmallPtrSet MethodSet; MethodSet Results = CXXRecordMembersNamed("c_str", S, E->getType()); for (MethodSet::iterator MI = Results.begin(), ME = Results.end(); MI != ME; ++MI) { const CXXMethodDecl *Method = *MI; if (Method->getMinRequiredArguments() == 0 && AT.matchesType(S.Context, Method->getReturnType())) { // FIXME: Suggest parens if the expression needs them. SourceLocation EndLoc = S.getPreprocessor().getLocForEndOfToken(E->getLocEnd()); S.Diag(E->getLocStart(), diag::note_printf_c_str) << "c_str()" << FixItHint::CreateInsertion(EndLoc, ".c_str()"); return true; } } return false; } bool CheckPrintfHandler::HandlePrintfSpecifier(const analyze_printf::PrintfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_format_string; using namespace analyze_printf; const PrintfConversionSpecifier &CS = FS.getConversionSpecifier(); if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // First check if the field width, precision, and conversion specifier // have matching data arguments. if (!HandleAmount(FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen)) { return false; } if (!HandleAmount(FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen)) { return false; } if (!CS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check for using an Objective-C specific conversion specifier // in a non-ObjC literal. if (!ObjCContext && CS.isObjCArg()) { return HandleInvalidPrintfConversionSpecifier(FS, startSpecifier, specifierLen); } // Check for invalid use of field width if (!FS.hasValidFieldWidth()) { HandleInvalidAmount(FS, FS.getFieldWidth(), /* field width */ 0, startSpecifier, specifierLen); } // Check for invalid use of precision if (!FS.hasValidPrecision()) { HandleInvalidAmount(FS, FS.getPrecision(), /* precision */ 1, startSpecifier, specifierLen); } // Check each flag does not conflict with any other component. if (!FS.hasValidThousandsGroupingPrefix()) HandleFlag(FS, FS.hasThousandsGrouping(), startSpecifier, specifierLen); if (!FS.hasValidLeadingZeros()) HandleFlag(FS, FS.hasLeadingZeros(), startSpecifier, specifierLen); if (!FS.hasValidPlusPrefix()) HandleFlag(FS, FS.hasPlusPrefix(), startSpecifier, specifierLen); if (!FS.hasValidSpacePrefix()) HandleFlag(FS, FS.hasSpacePrefix(), startSpecifier, specifierLen); if (!FS.hasValidAlternativeForm()) HandleFlag(FS, FS.hasAlternativeForm(), startSpecifier, specifierLen); if (!FS.hasValidLeftJustified()) HandleFlag(FS, FS.isLeftJustified(), startSpecifier, specifierLen); // Check that flags are not ignored by another flag if (FS.hasSpacePrefix() && FS.hasPlusPrefix()) // ' ' ignored by '+' HandleIgnoredFlag(FS, FS.hasSpacePrefix(), FS.hasPlusPrefix(), startSpecifier, specifierLen); if (FS.hasLeadingZeros() && FS.isLeftJustified()) // '0' ignored by '-' HandleIgnoredFlag(FS, FS.hasLeadingZeros(), FS.isLeftJustified(), startSpecifier, specifierLen); // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; const Expr *Arg = getDataArg(argIndex); if (!Arg) return true; return checkFormatExpr(FS, startSpecifier, specifierLen, Arg); } static bool requiresParensToAddCast(const Expr *E) { // FIXME: We should have a general way to reason about operator // precedence and whether parens are actually needed here. // Take care of a few common cases where they aren't. const Expr *Inside = E->IgnoreImpCasts(); if (const PseudoObjectExpr *POE = dyn_cast(Inside)) Inside = POE->getSyntacticForm()->IgnoreImpCasts(); switch (Inside->getStmtClass()) { case Stmt::ArraySubscriptExprClass: case Stmt::CallExprClass: case Stmt::CharacterLiteralClass: case Stmt::CXXBoolLiteralExprClass: case Stmt::DeclRefExprClass: case Stmt::FloatingLiteralClass: case Stmt::IntegerLiteralClass: case Stmt::MemberExprClass: case Stmt::ObjCArrayLiteralClass: case Stmt::ObjCBoolLiteralExprClass: case Stmt::ObjCBoxedExprClass: case Stmt::ObjCDictionaryLiteralClass: case Stmt::ObjCEncodeExprClass: case Stmt::ObjCIvarRefExprClass: case Stmt::ObjCMessageExprClass: case Stmt::ObjCPropertyRefExprClass: case Stmt::ObjCStringLiteralClass: case Stmt::ObjCSubscriptRefExprClass: case Stmt::ParenExprClass: case Stmt::StringLiteralClass: case Stmt::UnaryOperatorClass: return false; default: return true; } } bool CheckPrintfHandler::checkFormatExpr(const analyze_printf::PrintfSpecifier &FS, const char *StartSpecifier, unsigned SpecifierLen, const Expr *E) { using namespace analyze_format_string; using namespace analyze_printf; // Now type check the data expression that matches the // format specifier. const analyze_printf::ArgType &AT = FS.getArgType(S.Context, ObjCContext); if (!AT.isValid()) return true; QualType ExprTy = E->getType(); while (const TypeOfExprType *TET = dyn_cast(ExprTy)) { ExprTy = TET->getUnderlyingExpr()->getType(); } if (AT.matchesType(S.Context, ExprTy)) return true; // Look through argument promotions for our error message's reported type. // This includes the integral and floating promotions, but excludes array // and function pointer decay; seeing that an argument intended to be a // string has type 'char [6]' is probably more confusing than 'char *'. if (const ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() == CK_IntegralCast || ICE->getCastKind() == CK_FloatingCast) { E = ICE->getSubExpr(); ExprTy = E->getType(); // Check if we didn't match because of an implicit cast from a 'char' // or 'short' to an 'int'. This is done because printf is a varargs // function. if (ICE->getType() == S.Context.IntTy || ICE->getType() == S.Context.UnsignedIntTy) { // All further checking is done on the subexpression. if (AT.matchesType(S.Context, ExprTy)) return true; } } } else if (const CharacterLiteral *CL = dyn_cast(E)) { // Special case for 'a', which has type 'int' in C. // Note, however, that we do /not/ want to treat multibyte constants like // 'MooV' as characters! This form is deprecated but still exists. if (ExprTy == S.Context.IntTy) if (llvm::isUIntN(S.Context.getCharWidth(), CL->getValue())) ExprTy = S.Context.CharTy; } // %C in an Objective-C context prints a unichar, not a wchar_t. // If the argument is an integer of some kind, believe the %C and suggest // a cast instead of changing the conversion specifier. QualType IntendedTy = ExprTy; if (ObjCContext && FS.getConversionSpecifier().getKind() == ConversionSpecifier::CArg) { if (ExprTy->isIntegralOrUnscopedEnumerationType() && !ExprTy->isCharType()) { // 'unichar' is defined as a typedef of unsigned short, but we should // prefer using the typedef if it is visible. IntendedTy = S.Context.UnsignedShortTy; // While we are here, check if the value is an IntegerLiteral that happens // to be within the valid range. if (const IntegerLiteral *IL = dyn_cast(E)) { const llvm::APInt &V = IL->getValue(); if (V.getActiveBits() <= S.Context.getTypeSize(IntendedTy)) return true; } LookupResult Result(S, &S.Context.Idents.get("unichar"), E->getLocStart(), Sema::LookupOrdinaryName); if (S.LookupName(Result, S.getCurScope())) { NamedDecl *ND = Result.getFoundDecl(); if (TypedefNameDecl *TD = dyn_cast(ND)) if (TD->getUnderlyingType() == IntendedTy) IntendedTy = S.Context.getTypedefType(TD); } } } // Special-case some of Darwin's platform-independence types by suggesting // casts to primitive types that are known to be large enough. bool ShouldNotPrintDirectly = false; if (S.Context.getTargetInfo().getTriple().isOSDarwin()) { // Use a 'while' to peel off layers of typedefs. QualType TyTy = IntendedTy; while (const TypedefType *UserTy = TyTy->getAs()) { StringRef Name = UserTy->getDecl()->getName(); QualType CastTy = llvm::StringSwitch(Name) .Case("NSInteger", S.Context.LongTy) .Case("NSUInteger", S.Context.UnsignedLongTy) .Case("SInt32", S.Context.IntTy) .Case("UInt32", S.Context.UnsignedIntTy) .Default(QualType()); if (!CastTy.isNull()) { ShouldNotPrintDirectly = true; IntendedTy = CastTy; break; } TyTy = UserTy->desugar(); } } // We may be able to offer a FixItHint if it is a supported type. PrintfSpecifier fixedFS = FS; bool success = fixedFS.fixType(IntendedTy, S.getLangOpts(), S.Context, ObjCContext); if (success) { // Get the fix string from the fixed format specifier SmallString<16> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); CharSourceRange SpecRange = getSpecifierRange(StartSpecifier, SpecifierLen); if (IntendedTy == ExprTy) { // In this case, the specifier is wrong and should be changed to match // the argument. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << IntendedTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, FixItHint::CreateReplacement(SpecRange, os.str())); } else { // The canonical type for formatting this value is different from the // actual type of the expression. (This occurs, for example, with Darwin's // NSInteger on 32-bit platforms, where it is typedef'd as 'int', but // should be printed as 'long' for 64-bit compatibility.) // Rather than emitting a normal format/argument mismatch, we want to // add a cast to the recommended type (and correct the format string // if necessary). SmallString<16> CastBuf; llvm::raw_svector_ostream CastFix(CastBuf); CastFix << "("; IntendedTy.print(CastFix, S.Context.getPrintingPolicy()); CastFix << ")"; SmallVector Hints; if (!AT.matchesType(S.Context, IntendedTy)) Hints.push_back(FixItHint::CreateReplacement(SpecRange, os.str())); if (const CStyleCastExpr *CCast = dyn_cast(E)) { // If there's already a cast present, just replace it. SourceRange CastRange(CCast->getLParenLoc(), CCast->getRParenLoc()); Hints.push_back(FixItHint::CreateReplacement(CastRange, CastFix.str())); } else if (!requiresParensToAddCast(E)) { // If the expression has high enough precedence, // just write the C-style cast. Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); } else { // Otherwise, add parens around the expression as well as the cast. CastFix << "("; Hints.push_back(FixItHint::CreateInsertion(E->getLocStart(), CastFix.str())); SourceLocation After = S.PP.getLocForEndOfToken(E->getLocEnd()); Hints.push_back(FixItHint::CreateInsertion(After, ")")); } if (ShouldNotPrintDirectly) { // The expression has a type that should not be printed directly. // We extract the name from the typedef because we don't want to show // the underlying type in the diagnostic. StringRef Name = cast(ExprTy)->getDecl()->getName(); EmitFormatDiagnostic(S.PDiag(diag::warn_format_argument_needs_cast) << Name << IntendedTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation=*/false, SpecRange, Hints); } else { // In this case, the expression could be printed using a different // specifier, but we've decided that the specifier is probably correct // and we should cast instead. Just use the normal warning message. EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, SpecRange, Hints); } } } else { const CharSourceRange &CSR = getSpecifierRange(StartSpecifier, SpecifierLen); // Since the warning for passing non-POD types to variadic functions // was deferred until now, we emit a warning for non-POD // arguments here. switch (S.isValidVarArgType(ExprTy)) { case Sema::VAK_Valid: case Sema::VAK_ValidInCXX11: EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << ExprTy << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); break; case Sema::VAK_Undefined: EmitFormatDiagnostic( S.PDiag(diag::warn_non_pod_vararg_with_format_string) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); checkForCStrMembers(AT, E); break; case Sema::VAK_Invalid: if (ExprTy->isObjCObjectType()) EmitFormatDiagnostic( S.PDiag(diag::err_cannot_pass_objc_interface_to_vararg_format) << S.getLangOpts().CPlusPlus11 << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << CSR << E->getSourceRange(), E->getLocStart(), /*IsStringLocation*/false, CSR); else // FIXME: If this is an initializer list, suggest removing the braces // or inserting a cast to the target type. S.Diag(E->getLocStart(), diag::err_cannot_pass_to_vararg_format) << isa(E) << ExprTy << CallType << AT.getRepresentativeTypeName(S.Context) << E->getSourceRange(); break; } assert(FirstDataArg + FS.getArgIndex() < CheckedVarArgs.size() && "format string specifier index out of range"); CheckedVarArgs[FirstDataArg + FS.getArgIndex()] = true; } return true; } //===--- CHECK: Scanf format string checking ------------------------------===// namespace { class CheckScanfHandler : public CheckFormatHandler { public: CheckScanfHandler(Sema &s, const StringLiteral *fexpr, const Expr *origFormatExpr, unsigned firstDataArg, unsigned numDataArgs, const char *beg, bool hasVAListArg, ArrayRef Args, unsigned formatIdx, bool inFunctionCall, Sema::VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) : CheckFormatHandler(s, fexpr, origFormatExpr, firstDataArg, numDataArgs, beg, hasVAListArg, Args, formatIdx, inFunctionCall, CallType, CheckedVarArgs) {} bool HandleScanfSpecifier(const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); bool HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen); void HandleIncompleteScanList(const char *start, const char *end); }; } void CheckScanfHandler::HandleIncompleteScanList(const char *start, const char *end) { EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_scanlist_incomplete), getLocationOfByte(end), /*IsStringLocation*/true, getSpecifierRange(start, end - start)); } bool CheckScanfHandler::HandleInvalidScanfConversionSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { const analyze_scanf::ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); return HandleInvalidConversionSpecifier(FS.getArgIndex(), getLocationOfByte(CS.getStart()), startSpecifier, specifierLen, CS.getStart(), CS.getLength()); } bool CheckScanfHandler::HandleScanfSpecifier( const analyze_scanf::ScanfSpecifier &FS, const char *startSpecifier, unsigned specifierLen) { using namespace analyze_scanf; using namespace analyze_format_string; const ScanfConversionSpecifier &CS = FS.getConversionSpecifier(); // Handle case where '%' and '*' don't consume an argument. These shouldn't // be used to decide if we are using positional arguments consistently. if (FS.consumesDataArgument()) { if (atFirstArg) { atFirstArg = false; usesPositionalArgs = FS.usesPositionalArg(); } else if (usesPositionalArgs != FS.usesPositionalArg()) { HandlePositionalNonpositionalArgs(getLocationOfByte(CS.getStart()), startSpecifier, specifierLen); return false; } } // Check if the field with is non-zero. const OptionalAmount &Amt = FS.getFieldWidth(); if (Amt.getHowSpecified() == OptionalAmount::Constant) { if (Amt.getConstantAmount() == 0) { const CharSourceRange &R = getSpecifierRange(Amt.getStart(), Amt.getConstantLength()); EmitFormatDiagnostic(S.PDiag(diag::warn_scanf_nonzero_width), getLocationOfByte(Amt.getStart()), /*IsStringLocation*/true, R, FixItHint::CreateRemoval(R)); } } if (!FS.consumesDataArgument()) { // FIXME: Technically specifying a precision or field width here // makes no sense. Worth issuing a warning at some point. return true; } // Consume the argument. unsigned argIndex = FS.getArgIndex(); if (argIndex < NumDataArgs) { // The check to see if the argIndex is valid will come later. // We set the bit here because we may exit early from this // function if we encounter some other error. CoveredArgs.set(argIndex); } // Check the length modifier is valid with the given conversion specifier. if (!FS.hasValidLengthModifier(S.getASTContext().getTargetInfo())) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_nonsensical_length); else if (!FS.hasStandardLengthModifier()) HandleNonStandardLengthModifier(FS, startSpecifier, specifierLen); else if (!FS.hasStandardLengthConversionCombination()) HandleInvalidLengthModifier(FS, CS, startSpecifier, specifierLen, diag::warn_format_non_standard_conversion_spec); if (!FS.hasStandardConversionSpecifier(S.getLangOpts())) HandleNonStandardConversionSpecifier(CS, startSpecifier, specifierLen); // The remaining checks depend on the data arguments. if (HasVAListArg) return true; if (!CheckNumArgs(FS, CS, startSpecifier, specifierLen, argIndex)) return false; // Check that the argument type matches the format specifier. const Expr *Ex = getDataArg(argIndex); if (!Ex) return true; const analyze_format_string::ArgType &AT = FS.getArgType(S.Context); if (AT.isValid() && !AT.matchesType(S.Context, Ex->getType())) { ScanfSpecifier fixedFS = FS; bool success = fixedFS.fixType(Ex->getType(), S.getLangOpts(), S.Context); if (success) { // Get the fix string from the fixed format specifier. SmallString<128> buf; llvm::raw_svector_ostream os(buf); fixedFS.toString(os); EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen), FixItHint::CreateReplacement( getSpecifierRange(startSpecifier, specifierLen), os.str())); } else { EmitFormatDiagnostic( S.PDiag(diag::warn_printf_conversion_argument_type_mismatch) << AT.getRepresentativeTypeName(S.Context) << Ex->getType() << Ex->getSourceRange(), Ex->getLocStart(), /*IsStringLocation*/false, getSpecifierRange(startSpecifier, specifierLen)); } } return true; } void Sema::CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr, ArrayRef Args, bool HasVAListArg, unsigned format_idx, unsigned firstDataArg, FormatStringType Type, bool inFunctionCall, VariadicCallType CallType, llvm::SmallBitVector &CheckedVarArgs) { // CHECK: is the format string a wide literal? if (!FExpr->isAscii() && !FExpr->isUTF8()) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_format_string_is_wide_literal), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } // Str - The format string. NOTE: this is NOT null-terminated! StringRef StrRef = FExpr->getString(); const char *Str = StrRef.data(); // Account for cases where the string literal is truncated in a declaration. const ConstantArrayType *T = Context.getAsConstantArrayType(FExpr->getType()); assert(T && "String literal not of constant array type!"); size_t TypeSize = T->getSize().getZExtValue(); size_t StrLen = std::min(std::max(TypeSize, size_t(1)) - 1, StrRef.size()); const unsigned numDataArgs = Args.size() - firstDataArg; // Emit a warning if the string literal is truncated and does not contain an // embedded null character. if (TypeSize <= StrRef.size() && StrRef.substr(0, TypeSize).find('\0') == StringRef::npos) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_printf_format_string_not_null_terminated), FExpr->getLocStart(), /*IsStringLocation=*/true, OrigFormatExpr->getSourceRange()); return; } // CHECK: empty format string? if (StrLen == 0 && numDataArgs > 0) { CheckFormatHandler::EmitFormatDiagnostic( *this, inFunctionCall, Args[format_idx], PDiag(diag::warn_empty_format_string), FExpr->getLocStart(), /*IsStringLocation*/true, OrigFormatExpr->getSourceRange()); return; } if (Type == FST_Printf || Type == FST_NSString) { CheckPrintfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, (Type == FST_NSString), Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParsePrintfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } else if (Type == FST_Scanf) { CheckScanfHandler H(*this, FExpr, OrigFormatExpr, firstDataArg, numDataArgs, Str, HasVAListArg, Args, format_idx, inFunctionCall, CallType, CheckedVarArgs); if (!analyze_format_string::ParseScanfString(H, Str, Str + StrLen, getLangOpts(), Context.getTargetInfo())) H.DoneProcessing(); } // TODO: handle other formats } //===--- CHECK: Warn on use of wrong absolute value function. -------------===// // Returns the related absolute value function that is larger, of 0 if one // does not exist. static unsigned getLargerAbsoluteValueFunction(unsigned AbsFunction) { switch (AbsFunction) { default: return 0; case Builtin::BI__builtin_abs: return Builtin::BI__builtin_labs; case Builtin::BI__builtin_labs: return Builtin::BI__builtin_llabs; case Builtin::BI__builtin_llabs: return 0; case Builtin::BI__builtin_fabsf: return Builtin::BI__builtin_fabs; case Builtin::BI__builtin_fabs: return Builtin::BI__builtin_fabsl; case Builtin::BI__builtin_fabsl: return 0; case Builtin::BI__builtin_cabsf: return Builtin::BI__builtin_cabs; case Builtin::BI__builtin_cabs: return Builtin::BI__builtin_cabsl; case Builtin::BI__builtin_cabsl: return 0; case Builtin::BIabs: return Builtin::BIlabs; case Builtin::BIlabs: return Builtin::BIllabs; case Builtin::BIllabs: return 0; case Builtin::BIfabsf: return Builtin::BIfabs; case Builtin::BIfabs: return Builtin::BIfabsl; case Builtin::BIfabsl: return 0; case Builtin::BIcabsf: return Builtin::BIcabs; case Builtin::BIcabs: return Builtin::BIcabsl; case Builtin::BIcabsl: return 0; } } // Returns the argument type of the absolute value function. static QualType getAbsoluteValueArgumentType(ASTContext &Context, unsigned AbsType) { if (AbsType == 0) return QualType(); ASTContext::GetBuiltinTypeError Error = ASTContext::GE_None; QualType BuiltinType = Context.GetBuiltinType(AbsType, Error); if (Error != ASTContext::GE_None) return QualType(); const FunctionProtoType *FT = BuiltinType->getAs(); if (!FT) return QualType(); if (FT->getNumParams() != 1) return QualType(); return FT->getParamType(0); } // Returns the best absolute value function, or zero, based on type and // current absolute value function. static unsigned getBestAbsFunction(ASTContext &Context, QualType ArgType, unsigned AbsFunctionKind) { unsigned BestKind = 0; uint64_t ArgSize = Context.getTypeSize(ArgType); for (unsigned Kind = AbsFunctionKind; Kind != 0; Kind = getLargerAbsoluteValueFunction(Kind)) { QualType ParamType = getAbsoluteValueArgumentType(Context, Kind); if (Context.getTypeSize(ParamType) >= ArgSize) { if (BestKind == 0) BestKind = Kind; else if (Context.hasSameType(ParamType, ArgType)) { BestKind = Kind; break; } } } return BestKind; } enum AbsoluteValueKind { AVK_Integer, AVK_Floating, AVK_Complex }; static AbsoluteValueKind getAbsoluteValueKind(QualType T) { if (T->isIntegralOrEnumerationType()) return AVK_Integer; if (T->isRealFloatingType()) return AVK_Floating; if (T->isAnyComplexType()) return AVK_Complex; llvm_unreachable("Type not integer, floating, or complex"); } // Changes the absolute value function to a different type. Preserves whether // the function is a builtin. static unsigned changeAbsFunction(unsigned AbsKind, AbsoluteValueKind ValueKind) { switch (ValueKind) { case AVK_Integer: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_abs; case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIabs; } case AVK_Floating: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsl: return Builtin::BI__builtin_fabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIcabsf: case Builtin::BIcabs: case Builtin::BIcabsl: return Builtin::BIfabsf; } case AVK_Complex: switch (AbsKind) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsl: return Builtin::BI__builtin_cabsf; case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabsf: case Builtin::BIfabs: case Builtin::BIfabsl: return Builtin::BIcabsf; } } llvm_unreachable("Unable to convert function"); } unsigned getAbsoluteValueFunctionKind(const FunctionDecl *FDecl) { const IdentifierInfo *FnInfo = FDecl->getIdentifier(); if (!FnInfo) return 0; switch (FDecl->getBuiltinID()) { default: return 0; case Builtin::BI__builtin_abs: case Builtin::BI__builtin_fabs: case Builtin::BI__builtin_fabsf: case Builtin::BI__builtin_fabsl: case Builtin::BI__builtin_labs: case Builtin::BI__builtin_llabs: case Builtin::BI__builtin_cabs: case Builtin::BI__builtin_cabsf: case Builtin::BI__builtin_cabsl: case Builtin::BIabs: case Builtin::BIlabs: case Builtin::BIllabs: case Builtin::BIfabs: case Builtin::BIfabsf: case Builtin::BIfabsl: case Builtin::BIcabs: case Builtin::BIcabsf: case Builtin::BIcabsl: return FDecl->getBuiltinID(); } llvm_unreachable("Unknown Builtin type"); } // If the replacement is valid, emit a note with replacement function. // Additionally, suggest including the proper header if not already included. static void emitReplacement(Sema &S, SourceLocation Loc, SourceRange Range, unsigned AbsKind) { std::string AbsName = S.Context.BuiltinInfo.GetName(AbsKind); // Look up absolute value function in TU scope. DeclarationName DN(&S.Context.Idents.get(AbsName)); LookupResult R(S, DN, Loc, Sema::LookupAnyName); S.LookupName(R, S.TUScope); // Skip notes if multiple results found in lookup. if (!R.empty() && !R.isSingleResult()) return; FunctionDecl *FD = 0; bool FoundFunction = R.isSingleResult(); // When one result is found, see if it is the correct function. if (R.isSingleResult()) { FD = dyn_cast(R.getFoundDecl()); if (!FD || FD->getBuiltinID() != AbsKind) return; } // Look for local name conflict, prepend "::" as necessary. R.clear(); S.LookupName(R, S.getCurScope()); if (!FoundFunction) { if (!R.empty()) { AbsName = "::" + AbsName; } } else { // FoundFunction if (R.isSingleResult()) { if (R.getFoundDecl() != FD) { AbsName = "::" + AbsName; } } else if (!R.empty()) { AbsName = "::" + AbsName; } } S.Diag(Loc, diag::note_replace_abs_function) << AbsName << FixItHint::CreateReplacement(Range, AbsName); if (!FoundFunction) { S.Diag(Loc, diag::note_please_include_header) << S.Context.BuiltinInfo.getHeaderName(AbsKind) << S.Context.BuiltinInfo.GetName(AbsKind); } } // Warn when using the wrong abs() function. void Sema::CheckAbsoluteValueFunction(const CallExpr *Call, const FunctionDecl *FDecl, IdentifierInfo *FnInfo) { if (Call->getNumArgs() != 1) return; unsigned AbsKind = getAbsoluteValueFunctionKind(FDecl); if (AbsKind == 0) return; QualType ArgType = Call->getArg(0)->IgnoreParenImpCasts()->getType(); QualType ParamType = Call->getArg(0)->getType(); // Unsigned types can not be negative. Suggest to drop the absolute value // function. if (ArgType->isUnsignedIntegerType()) { Diag(Call->getExprLoc(), diag::warn_unsigned_abs) << ArgType << ParamType; Diag(Call->getExprLoc(), diag::note_remove_abs) << FDecl << FixItHint::CreateRemoval(Call->getCallee()->getSourceRange()); return; } AbsoluteValueKind ArgValueKind = getAbsoluteValueKind(ArgType); AbsoluteValueKind ParamValueKind = getAbsoluteValueKind(ParamType); // The argument and parameter are the same kind. Check if they are the right // size. if (ArgValueKind == ParamValueKind) { if (Context.getTypeSize(ArgType) <= Context.getTypeSize(ParamType)) return; unsigned NewAbsKind = getBestAbsFunction(Context, ArgType, AbsKind); Diag(Call->getExprLoc(), diag::warn_abs_too_small) << FDecl << ArgType << ParamType; if (NewAbsKind == 0) return; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind); return; } // ArgValueKind != ParamValueKind // The wrong type of absolute value function was used. Attempt to find the // proper one. unsigned NewAbsKind = changeAbsFunction(AbsKind, ArgValueKind); NewAbsKind = getBestAbsFunction(Context, ArgType, NewAbsKind); if (NewAbsKind == 0) return; Diag(Call->getExprLoc(), diag::warn_wrong_absolute_value_type) << FDecl << ParamValueKind << ArgValueKind; emitReplacement(*this, Call->getExprLoc(), Call->getCallee()->getSourceRange(), NewAbsKind); return; } //===--- CHECK: Standard memory functions ---------------------------------===// /// \brief Takes the expression passed to the size_t parameter of functions /// such as memcmp, strncat, etc and warns if it's a comparison. /// /// This is to catch typos like `if (memcmp(&a, &b, sizeof(a) > 0))`. static bool CheckMemorySizeofForComparison(Sema &S, const Expr *E, IdentifierInfo *FnName, SourceLocation FnLoc, SourceLocation RParenLoc) { const BinaryOperator *Size = dyn_cast(E); if (!Size) return false; // if E is binop and op is >, <, >=, <=, ==, &&, ||: if (!Size->isComparisonOp() && !Size->isEqualityOp() && !Size->isLogicalOp()) return false; Preprocessor &PP = S.getPreprocessor(); SourceRange SizeRange = Size->getSourceRange(); S.Diag(Size->getOperatorLoc(), diag::warn_memsize_comparison) << SizeRange << FnName; S.Diag(FnLoc, diag::warn_memsize_comparison_paren_note) << FnName << FixItHint::CreateInsertion( PP.getLocForEndOfToken(Size->getLHS()->getLocEnd()), ")") << FixItHint::CreateRemoval(RParenLoc); S.Diag(SizeRange.getBegin(), diag::warn_memsize_comparison_cast_note) << FixItHint::CreateInsertion(SizeRange.getBegin(), "(size_t)(") << FixItHint::CreateInsertion( PP.getLocForEndOfToken(SizeRange.getEnd()), ")"); return true; } /// \brief Determine whether the given type is a dynamic class type (e.g., /// whether it has a vtable). static bool isDynamicClassType(QualType T) { if (CXXRecordDecl *Record = T->getAsCXXRecordDecl()) if (CXXRecordDecl *Definition = Record->getDefinition()) if (Definition->isDynamicClass()) return true; return false; } /// \brief If E is a sizeof expression, returns its argument expression, /// otherwise returns NULL. static const Expr *getSizeOfExprArg(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf && !SizeOf->isArgumentType()) return SizeOf->getArgumentExpr()->IgnoreParenImpCasts(); return 0; } /// \brief If E is a sizeof expression, returns its argument type. static QualType getSizeOfArgType(const Expr* E) { if (const UnaryExprOrTypeTraitExpr *SizeOf = dyn_cast(E)) if (SizeOf->getKind() == clang::UETT_SizeOf) return SizeOf->getTypeOfArgument(); return QualType(); } /// \brief Check for dangerous or invalid arguments to memset(). /// /// This issues warnings on known problematic, dangerous or unspecified /// arguments to the standard 'memset', 'memcpy', 'memmove', and 'memcmp' /// function calls. /// /// \param Call The call expression to diagnose. void Sema::CheckMemaccessArguments(const CallExpr *Call, unsigned BId, IdentifierInfo *FnName) { assert(BId != 0); // It is possible to have a non-standard definition of memset. Validate // we have enough arguments, and if not, abort further checking. unsigned ExpectedNumArgs = (BId == Builtin::BIstrndup ? 2 : 3); if (Call->getNumArgs() < ExpectedNumArgs) return; unsigned LastArg = (BId == Builtin::BImemset || BId == Builtin::BIstrndup ? 1 : 2); unsigned LenArg = (BId == Builtin::BIstrndup ? 1 : 2); const Expr *LenExpr = Call->getArg(LenArg)->IgnoreParenImpCasts(); if (CheckMemorySizeofForComparison(*this, LenExpr, FnName, Call->getLocStart(), Call->getRParenLoc())) return; // We have special checking when the length is a sizeof expression. QualType SizeOfArgTy = getSizeOfArgType(LenExpr); const Expr *SizeOfArg = getSizeOfExprArg(LenExpr); llvm::FoldingSetNodeID SizeOfArgID; for (unsigned ArgIdx = 0; ArgIdx != LastArg; ++ArgIdx) { const Expr *Dest = Call->getArg(ArgIdx)->IgnoreParenImpCasts(); SourceRange ArgRange = Call->getArg(ArgIdx)->getSourceRange(); QualType DestTy = Dest->getType(); if (const PointerType *DestPtrTy = DestTy->getAs()) { QualType PointeeTy = DestPtrTy->getPointeeType(); // Never warn about void type pointers. This can be used to suppress // false positives. if (PointeeTy->isVoidType()) continue; // Catch "memset(p, 0, sizeof(p))" -- needs to be sizeof(*p). Do this by // actually comparing the expressions for equality. Because computing the // expression IDs can be expensive, we only do this if the diagnostic is // enabled. if (SizeOfArg && Diags.getDiagnosticLevel(diag::warn_sizeof_pointer_expr_memaccess, SizeOfArg->getExprLoc())) { // We only compute IDs for expressions if the warning is enabled, and // cache the sizeof arg's ID. if (SizeOfArgID == llvm::FoldingSetNodeID()) SizeOfArg->Profile(SizeOfArgID, Context, true); llvm::FoldingSetNodeID DestID; Dest->Profile(DestID, Context, true); if (DestID == SizeOfArgID) { // TODO: For strncpy() and friends, this could suggest sizeof(dst) // over sizeof(src) as well. unsigned ActionIdx = 0; // Default is to suggest dereferencing. StringRef ReadableName = FnName->getName(); if (const UnaryOperator *UnaryOp = dyn_cast(Dest)) if (UnaryOp->getOpcode() == UO_AddrOf) ActionIdx = 1; // If its an address-of operator, just remove it. if (!PointeeTy->isIncompleteType() && (Context.getTypeSize(PointeeTy) == Context.getCharWidth())) ActionIdx = 2; // If the pointee's size is sizeof(char), // suggest an explicit length. // If the function is defined as a builtin macro, do not show macro // expansion. SourceLocation SL = SizeOfArg->getExprLoc(); SourceRange DSR = Dest->getSourceRange(); SourceRange SSR = SizeOfArg->getSourceRange(); SourceManager &SM = PP.getSourceManager(); if (SM.isMacroArgExpansion(SL)) { ReadableName = Lexer::getImmediateMacroName(SL, SM, LangOpts); SL = SM.getSpellingLoc(SL); DSR = SourceRange(SM.getSpellingLoc(DSR.getBegin()), SM.getSpellingLoc(DSR.getEnd())); SSR = SourceRange(SM.getSpellingLoc(SSR.getBegin()), SM.getSpellingLoc(SSR.getEnd())); } DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess) << ReadableName << PointeeTy << DestTy << DSR << SSR); DiagRuntimeBehavior(SL, SizeOfArg, PDiag(diag::warn_sizeof_pointer_expr_memaccess_note) << ActionIdx << SSR); break; } } // Also check for cases where the sizeof argument is the exact same // type as the memory argument, and where it points to a user-defined // record type. if (SizeOfArgTy != QualType()) { if (PointeeTy->isRecordType() && Context.typesAreCompatible(SizeOfArgTy, DestTy)) { DiagRuntimeBehavior(LenExpr->getExprLoc(), Dest, PDiag(diag::warn_sizeof_pointer_type_memaccess) << FnName << SizeOfArgTy << ArgIdx << PointeeTy << Dest->getSourceRange() << LenExpr->getSourceRange()); break; } } // Always complain about dynamic classes. if (isDynamicClassType(PointeeTy)) { unsigned OperationType = 0; // "overwritten" if we're warning about the destination for any call // but memcmp; otherwise a verb appropriate to the call. if (ArgIdx != 0 || BId == Builtin::BImemcmp) { if (BId == Builtin::BImemcpy) OperationType = 1; else if(BId == Builtin::BImemmove) OperationType = 2; else if (BId == Builtin::BImemcmp) OperationType = 3; } DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_dyn_class_memaccess) << (BId == Builtin::BImemcmp ? ArgIdx + 2 : ArgIdx) << FnName << PointeeTy << OperationType << Call->getCallee()->getSourceRange()); } else if (PointeeTy.hasNonTrivialObjCLifetime() && BId != Builtin::BImemset) DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::warn_arc_object_memaccess) << ArgIdx << FnName << PointeeTy << Call->getCallee()->getSourceRange()); else continue; DiagRuntimeBehavior( Dest->getExprLoc(), Dest, PDiag(diag::note_bad_memaccess_silence) << FixItHint::CreateInsertion(ArgRange.getBegin(), "(void*)")); break; } } } // A little helper routine: ignore addition and subtraction of integer literals. // This intentionally does not ignore all integer constant expressions because // we don't want to remove sizeof(). static const Expr *ignoreLiteralAdditions(const Expr *Ex, ASTContext &Ctx) { Ex = Ex->IgnoreParenCasts(); for (;;) { const BinaryOperator * BO = dyn_cast(Ex); if (!BO || !BO->isAdditiveOp()) break; const Expr *RHS = BO->getRHS()->IgnoreParenCasts(); const Expr *LHS = BO->getLHS()->IgnoreParenCasts(); if (isa(RHS)) Ex = LHS; else if (isa(LHS)) Ex = RHS; else break; } return Ex; } static bool isConstantSizeArrayWithMoreThanOneElement(QualType Ty, ASTContext &Context) { // Only handle constant-sized or VLAs, but not flexible members. if (const ConstantArrayType *CAT = Context.getAsConstantArrayType(Ty)) { // Only issue the FIXIT for arrays of size > 1. if (CAT->getSize().getSExtValue() <= 1) return false; } else if (!Ty->isVariableArrayType()) { return false; } return true; } // Warn if the user has made the 'size' argument to strlcpy or strlcat // be the size of the source, instead of the destination. void Sema::CheckStrlcpycatArguments(const CallExpr *Call, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments if (Call->getNumArgs() != 3) return; const Expr *SrcArg = ignoreLiteralAdditions(Call->getArg(1), Context); const Expr *SizeArg = ignoreLiteralAdditions(Call->getArg(2), Context); const Expr *CompareWithSrc = NULL; if (CheckMemorySizeofForComparison(*this, SizeArg, FnName, Call->getLocStart(), Call->getRParenLoc())) return; // Look for 'strlcpy(dst, x, sizeof(x))' if (const Expr *Ex = getSizeOfExprArg(SizeArg)) CompareWithSrc = Ex; else { // Look for 'strlcpy(dst, x, strlen(x))' if (const CallExpr *SizeCall = dyn_cast(SizeArg)) { if (SizeCall->getBuiltinCallee() == Builtin::BIstrlen && SizeCall->getNumArgs() == 1) CompareWithSrc = ignoreLiteralAdditions(SizeCall->getArg(0), Context); } } if (!CompareWithSrc) return; // Determine if the argument to sizeof/strlen is equal to the source // argument. In principle there's all kinds of things you could do // here, for instance creating an == expression and evaluating it with // EvaluateAsBooleanCondition, but this uses a more direct technique: const DeclRefExpr *SrcArgDRE = dyn_cast(SrcArg); if (!SrcArgDRE) return; const DeclRefExpr *CompareWithSrcDRE = dyn_cast(CompareWithSrc); if (!CompareWithSrcDRE || SrcArgDRE->getDecl() != CompareWithSrcDRE->getDecl()) return; const Expr *OriginalSizeArg = Call->getArg(2); Diag(CompareWithSrcDRE->getLocStart(), diag::warn_strlcpycat_wrong_size) << OriginalSizeArg->getSourceRange() << FnName; // Output a FIXIT hint if the destination is an array (rather than a // pointer to an array). This could be enhanced to handle some // pointers if we know the actual size, like if DstArg is 'array+2' // we could say 'sizeof(array)-2'. const Expr *DstArg = Call->getArg(0)->IgnoreParenImpCasts(); if (!isConstantSizeArrayWithMoreThanOneElement(DstArg->getType(), Context)) return; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ")"; Diag(OriginalSizeArg->getLocStart(), diag::note_strlcpycat_wrong_size) << FixItHint::CreateReplacement(OriginalSizeArg->getSourceRange(), OS.str()); } /// Check if two expressions refer to the same declaration. static bool referToTheSameDecl(const Expr *E1, const Expr *E2) { if (const DeclRefExpr *D1 = dyn_cast_or_null(E1)) if (const DeclRefExpr *D2 = dyn_cast_or_null(E2)) return D1->getDecl() == D2->getDecl(); return false; } static const Expr *getStrlenExprArg(const Expr *E) { if (const CallExpr *CE = dyn_cast(E)) { const FunctionDecl *FD = CE->getDirectCallee(); if (!FD || FD->getMemoryFunctionKind() != Builtin::BIstrlen) return 0; return CE->getArg(0)->IgnoreParenCasts(); } return 0; } // Warn on anti-patterns as the 'size' argument to strncat. // The correct size argument should look like following: // strncat(dst, src, sizeof(dst) - strlen(dest) - 1); void Sema::CheckStrncatArguments(const CallExpr *CE, IdentifierInfo *FnName) { // Don't crash if the user has the wrong number of arguments. if (CE->getNumArgs() < 3) return; const Expr *DstArg = CE->getArg(0)->IgnoreParenCasts(); const Expr *SrcArg = CE->getArg(1)->IgnoreParenCasts(); const Expr *LenArg = CE->getArg(2)->IgnoreParenCasts(); if (CheckMemorySizeofForComparison(*this, LenArg, FnName, CE->getLocStart(), CE->getRParenLoc())) return; // Identify common expressions, which are wrongly used as the size argument // to strncat and may lead to buffer overflows. unsigned PatternType = 0; if (const Expr *SizeOfArg = getSizeOfExprArg(LenArg)) { // - sizeof(dst) if (referToTheSameDecl(SizeOfArg, DstArg)) PatternType = 1; // - sizeof(src) else if (referToTheSameDecl(SizeOfArg, SrcArg)) PatternType = 2; } else if (const BinaryOperator *BE = dyn_cast(LenArg)) { if (BE->getOpcode() == BO_Sub) { const Expr *L = BE->getLHS()->IgnoreParenCasts(); const Expr *R = BE->getRHS()->IgnoreParenCasts(); // - sizeof(dst) - strlen(dst) if (referToTheSameDecl(DstArg, getSizeOfExprArg(L)) && referToTheSameDecl(DstArg, getStrlenExprArg(R))) PatternType = 1; // - sizeof(src) - (anything) else if (referToTheSameDecl(SrcArg, getSizeOfExprArg(L))) PatternType = 2; } } if (PatternType == 0) return; // Generate the diagnostic. SourceLocation SL = LenArg->getLocStart(); SourceRange SR = LenArg->getSourceRange(); SourceManager &SM = PP.getSourceManager(); // If the function is defined as a builtin macro, do not show macro expansion. if (SM.isMacroArgExpansion(SL)) { SL = SM.getSpellingLoc(SL); SR = SourceRange(SM.getSpellingLoc(SR.getBegin()), SM.getSpellingLoc(SR.getEnd())); } // Check if the destination is an array (rather than a pointer to an array). QualType DstTy = DstArg->getType(); bool isKnownSizeArray = isConstantSizeArrayWithMoreThanOneElement(DstTy, Context); if (!isKnownSizeArray) { if (PatternType == 1) Diag(SL, diag::warn_strncat_wrong_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; return; } if (PatternType == 1) Diag(SL, diag::warn_strncat_large_size) << SR; else Diag(SL, diag::warn_strncat_src_size) << SR; SmallString<128> sizeString; llvm::raw_svector_ostream OS(sizeString); OS << "sizeof("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ") - "; OS << "strlen("; DstArg->printPretty(OS, 0, getPrintingPolicy()); OS << ") - 1"; Diag(SL, diag::note_strncat_wrong_size) << FixItHint::CreateReplacement(SR, OS.str()); } //===--- CHECK: Return Address of Stack Variable --------------------------===// static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl); static Expr *EvalAddr(Expr* E, SmallVectorImpl &refVars, Decl *ParentDecl); /// CheckReturnStackAddr - Check if a return statement returns the address /// of a stack variable. static void CheckReturnStackAddr(Sema &S, Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc) { Expr *stackE = 0; SmallVector refVars; // Perform checking for returned stack addresses, local blocks, // label addresses or references to temporaries. if (lhsType->isPointerType() || (!S.getLangOpts().ObjCAutoRefCount && lhsType->isBlockPointerType())) { stackE = EvalAddr(RetValExp, refVars, /*ParentDecl=*/0); } else if (lhsType->isReferenceType()) { stackE = EvalVal(RetValExp, refVars, /*ParentDecl=*/0); } if (stackE == 0) return; // Nothing suspicious was found. SourceLocation diagLoc; SourceRange diagRange; if (refVars.empty()) { diagLoc = stackE->getLocStart(); diagRange = stackE->getSourceRange(); } else { // We followed through a reference variable. 'stackE' contains the // problematic expression but we will warn at the return statement pointing // at the reference variable. We will later display the "trail" of // reference variables using notes. diagLoc = refVars[0]->getLocStart(); diagRange = refVars[0]->getSourceRange(); } if (DeclRefExpr *DR = dyn_cast(stackE)) { //address of local var. S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_stack_ref : diag::warn_ret_stack_addr) << DR->getDecl()->getDeclName() << diagRange; } else if (isa(stackE)) { // local block. S.Diag(diagLoc, diag::err_ret_local_block) << diagRange; } else if (isa(stackE)) { // address of label. S.Diag(diagLoc, diag::warn_ret_addr_label) << diagRange; } else { // local temporary. S.Diag(diagLoc, lhsType->isReferenceType() ? diag::warn_ret_local_temp_ref : diag::warn_ret_local_temp_addr) << diagRange; } // Display the "trail" of reference variables that we followed until we // found the problematic expression using notes. for (unsigned i = 0, e = refVars.size(); i != e; ++i) { VarDecl *VD = cast(refVars[i]->getDecl()); // If this var binds to another reference var, show the range of the next // var, otherwise the var binds to the problematic expression, in which case // show the range of the expression. SourceRange range = (i < e-1) ? refVars[i+1]->getSourceRange() : stackE->getSourceRange(); S.Diag(VD->getLocation(), diag::note_ref_var_local_bind) << VD->getDeclName() << range; } } /// EvalAddr - EvalAddr and EvalVal are mutually recursive functions that /// check if the expression in a return statement evaluates to an address /// to a location on the stack, a local block, an address of a label, or a /// reference to local temporary. The recursion is used to traverse the /// AST of the return expression, with recursion backtracking when we /// encounter a subexpression that (1) clearly does not lead to one of the /// above problematic expressions (2) is something we cannot determine leads to /// a problematic expression based on such local checking. /// /// Both EvalAddr and EvalVal follow through reference variables to evaluate /// the expression that they point to. Such variables are added to the /// 'refVars' vector so that we know what the reference variable "trail" was. /// /// EvalAddr processes expressions that are pointers that are used as /// references (and not L-values). EvalVal handles all other values. /// At the base case of the recursion is a check for the above problematic /// expressions. /// /// This implementation handles: /// /// * pointer-to-pointer casts /// * implicit conversions from array references to pointers /// * taking the address of fields /// * arbitrary interplay between "&" and "*" operators /// * pointer arithmetic from an address of a stack variable /// * taking the address of an array element where the array is on the stack static Expr *EvalAddr(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { if (E->isTypeDependent()) return NULL; // We should only be called for evaluating pointer expressions. assert((E->getType()->isAnyPointerType() || E->getType()->isBlockPointerType() || E->getType()->isObjCQualifiedIdType()) && "EvalAddr only works on pointers"); E = E->IgnoreParens(); // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. switch (E->getStmtClass()) { case Stmt::DeclRefExprClass: { DeclRefExpr *DR = cast(E); // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return 0; if (VarDecl *V = dyn_cast(DR->getDecl())) // If this is a reference variable, follow through to the expression that // it points to. if (V->hasLocalStorage() && V->getType()->isReferenceType() && V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalAddr(V->getInit(), refVars, ParentDecl); } return NULL; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is AddrOf. All others don't make sense as pointers. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_AddrOf) return EvalVal(U->getSubExpr(), refVars, ParentDecl); else return NULL; } case Stmt::BinaryOperatorClass: { // Handle pointer arithmetic. All other binary operators are not valid // in this context. BinaryOperator *B = cast(E); BinaryOperatorKind op = B->getOpcode(); if (op != BO_Add && op != BO_Sub) return NULL; Expr *Base = B->getLHS(); // Determine which argument is the real pointer base. It could be // the RHS argument instead of the LHS. if (!Base->getType()->isPointerType()) Base = B->getRHS(); assert (Base->getType()->isPointerType()); return EvalAddr(Base, refVars, ParentDecl); } // For conditional operators we need to see if either the LHS or RHS are // valid DeclRefExpr*s. If one of them is valid, we return it. case Stmt::ConditionalOperatorClass: { ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. // FIXME: That isn't a ConditionalOperator, so doesn't get here. if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalAddr(LHSExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return 0; return EvalAddr(C->getRHS(), refVars, ParentDecl); } case Stmt::BlockExprClass: if (cast(E)->getBlockDecl()->hasCaptures()) return E; // local block. return NULL; case Stmt::AddrLabelExprClass: return E; // address of label. case Stmt::ExprWithCleanupsClass: return EvalAddr(cast(E)->getSubExpr(), refVars, ParentDecl); // For casts, we need to handle conversions from arrays to // pointer values, and pointer-to-pointer conversions. case Stmt::ImplicitCastExprClass: case Stmt::CStyleCastExprClass: case Stmt::CXXFunctionalCastExprClass: case Stmt::ObjCBridgedCastExprClass: case Stmt::CXXStaticCastExprClass: case Stmt::CXXDynamicCastExprClass: case Stmt::CXXConstCastExprClass: case Stmt::CXXReinterpretCastExprClass: { Expr* SubExpr = cast(E)->getSubExpr(); switch (cast(E)->getCastKind()) { case CK_BitCast: case CK_LValueToRValue: case CK_NoOp: case CK_BaseToDerived: case CK_DerivedToBase: case CK_UncheckedDerivedToBase: case CK_Dynamic: case CK_CPointerToObjCPointerCast: case CK_BlockPointerToObjCPointerCast: case CK_AnyPointerToBlockPointerCast: return EvalAddr(SubExpr, refVars, ParentDecl); case CK_ArrayToPointerDecay: return EvalVal(SubExpr, refVars, ParentDecl); default: return 0; } } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalAddr( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; // Everything else: we simply don't reason about them. default: return NULL; } } /// EvalVal - This function is complements EvalAddr in the mutual recursion. /// See the comments for EvalAddr for more details. static Expr *EvalVal(Expr *E, SmallVectorImpl &refVars, Decl *ParentDecl) { do { // We should only be called for evaluating non-pointer expressions, or // expressions with a pointer type that are not used as references but instead // are l-values (e.g., DeclRefExpr with a pointer type). // Our "symbolic interpreter" is just a dispatch off the currently // viewed AST node. We then recursively traverse the AST by calling // EvalAddr and EvalVal appropriately. E = E->IgnoreParens(); switch (E->getStmtClass()) { case Stmt::ImplicitCastExprClass: { ImplicitCastExpr *IE = cast(E); if (IE->getValueKind() == VK_LValue) { E = IE->getSubExpr(); continue; } return NULL; } case Stmt::ExprWithCleanupsClass: return EvalVal(cast(E)->getSubExpr(), refVars,ParentDecl); case Stmt::DeclRefExprClass: { // When we hit a DeclRefExpr we are looking at code that refers to a // variable's name. If it's not a reference variable we check if it has // local storage within the function, and if so, return the expression. DeclRefExpr *DR = cast(E); // If we leave the immediate function, the lifetime isn't about to end. if (DR->refersToEnclosingLocal()) return 0; if (VarDecl *V = dyn_cast(DR->getDecl())) { // Check if it refers to itself, e.g. "int& i = i;". if (V == ParentDecl) return DR; if (V->hasLocalStorage()) { if (!V->getType()->isReferenceType()) return DR; // Reference variable, follow through to the expression that // it points to. if (V->hasInit()) { // Add the reference variable to the "trail". refVars.push_back(DR); return EvalVal(V->getInit(), refVars, V); } } } return NULL; } case Stmt::UnaryOperatorClass: { // The only unary operator that make sense to handle here // is Deref. All others don't resolve to a "name." This includes // handling all sorts of rvalues passed to a unary operator. UnaryOperator *U = cast(E); if (U->getOpcode() == UO_Deref) return EvalAddr(U->getSubExpr(), refVars, ParentDecl); return NULL; } case Stmt::ArraySubscriptExprClass: { // Array subscripts are potential references to data on the stack. We // retrieve the DeclRefExpr* for the array variable if it indeed // has local storage. return EvalAddr(cast(E)->getBase(), refVars,ParentDecl); } case Stmt::ConditionalOperatorClass: { // For conditional operators we need to see if either the LHS or RHS are // non-NULL Expr's. If one is non-NULL, we return it. ConditionalOperator *C = cast(E); // Handle the GNU extension for missing LHS. if (Expr *LHSExpr = C->getLHS()) { // In C++, we can have a throw-expression, which has 'void' type. if (!LHSExpr->getType()->isVoidType()) if (Expr *LHS = EvalVal(LHSExpr, refVars, ParentDecl)) return LHS; } // In C++, we can have a throw-expression, which has 'void' type. if (C->getRHS()->getType()->isVoidType()) return 0; return EvalVal(C->getRHS(), refVars, ParentDecl); } // Accesses to members are potential references to data on the stack. case Stmt::MemberExprClass: { MemberExpr *M = cast(E); // Check for indirect access. We only want direct field accesses. if (M->isArrow()) return NULL; // Check whether the member type is itself a reference, in which case // we're not going to refer to the member, but to what the member refers to. if (M->getMemberDecl()->getType()->isReferenceType()) return NULL; return EvalVal(M->getBase(), refVars, ParentDecl); } case Stmt::MaterializeTemporaryExprClass: if (Expr *Result = EvalVal( cast(E)->GetTemporaryExpr(), refVars, ParentDecl)) return Result; return E; default: // Check that we don't return or take the address of a reference to a // temporary. This is only useful in C++. if (!E->isTypeDependent() && E->isRValue()) return E; // Everything else: we simply don't reason about them. return NULL; } } while (true); } void Sema::CheckReturnValExpr(Expr *RetValExp, QualType lhsType, SourceLocation ReturnLoc, bool isObjCMethod, const AttrVec *Attrs, const FunctionDecl *FD) { CheckReturnStackAddr(*this, RetValExp, lhsType, ReturnLoc); // Check if the return value is null but should not be. if (Attrs && hasSpecificAttr(*Attrs) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_null_ret) << (isObjCMethod ? 1 : 0) << RetValExp->getSourceRange(); // C++11 [basic.stc.dynamic.allocation]p4: // If an allocation function declared with a non-throwing // exception-specification fails to allocate storage, it shall return // a null pointer. Any other allocation function that fails to allocate // storage shall indicate failure only by throwing an exception [...] if (FD) { OverloadedOperatorKind Op = FD->getOverloadedOperator(); if (Op == OO_New || Op == OO_Array_New) { const FunctionProtoType *Proto = FD->getType()->castAs(); if (!Proto->isNothrow(Context, /*ResultIfDependent*/true) && CheckNonNullExpr(*this, RetValExp)) Diag(ReturnLoc, diag::warn_operator_new_returns_null) << FD << getLangOpts().CPlusPlus11; } } } //===--- CHECK: Floating-Point comparisons (-Wfloat-equal) ---------------===// /// Check for comparisons of floating point operands using != and ==. /// Issue a warning if these are no self-comparisons, as they are not likely /// to do what the programmer intended. void Sema::CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr *RHS) { Expr* LeftExprSansParen = LHS->IgnoreParenImpCasts(); Expr* RightExprSansParen = RHS->IgnoreParenImpCasts(); // Special case: check for x == x (which is OK). // Do not emit warnings for such cases. if (DeclRefExpr* DRL = dyn_cast(LeftExprSansParen)) if (DeclRefExpr* DRR = dyn_cast(RightExprSansParen)) if (DRL->getDecl() == DRR->getDecl()) return; // Special case: check for comparisons against literals that can be exactly // represented by APFloat. In such cases, do not emit a warning. This // is a heuristic: often comparison against such literals are used to // detect if a value in a variable has not changed. This clearly can // lead to false negatives. if (FloatingLiteral* FLL = dyn_cast(LeftExprSansParen)) { if (FLL->isExact()) return; } else if (FloatingLiteral* FLR = dyn_cast(RightExprSansParen)) if (FLR->isExact()) return; // Check for comparisons with builtin types. if (CallExpr* CL = dyn_cast(LeftExprSansParen)) if (CL->getBuiltinCallee()) return; if (CallExpr* CR = dyn_cast(RightExprSansParen)) if (CR->getBuiltinCallee()) return; // Emit the diagnostic. Diag(Loc, diag::warn_floatingpoint_eq) << LHS->getSourceRange() << RHS->getSourceRange(); } //===--- CHECK: Integer mixed-sign comparisons (-Wsign-compare) --------===// //===--- CHECK: Lossy implicit conversions (-Wconversion) --------------===// namespace { /// Structure recording the 'active' range of an integer-valued /// expression. struct IntRange { /// The number of bits active in the int. unsigned Width; /// True if the int is known not to have negative values. bool NonNegative; IntRange(unsigned Width, bool NonNegative) : Width(Width), NonNegative(NonNegative) {} /// Returns the range of the bool type. static IntRange forBoolType() { return IntRange(1, true); } /// Returns the range of an opaque value of the given integral type. static IntRange forValueOfType(ASTContext &C, QualType T) { return forValueOfCanonicalType(C, T->getCanonicalTypeInternal().getTypePtr()); } /// Returns the range of an opaque value of a canonical integral type. static IntRange forValueOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); // For enum types, use the known bit width of the enumerators. if (const EnumType *ET = dyn_cast(T)) { EnumDecl *Enum = ET->getDecl(); if (!Enum->isCompleteDefinition()) return IntRange(C.getIntWidth(QualType(T, 0)), false); unsigned NumPositive = Enum->getNumPositiveBits(); unsigned NumNegative = Enum->getNumNegativeBits(); if (NumNegative == 0) return IntRange(NumPositive, true/*NonNegative*/); else return IntRange(std::max(NumPositive + 1, NumNegative), false/*NonNegative*/); } const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the "target" range of a canonical integral type, i.e. /// the range of values expressible in the type. /// /// This matches forValueOfCanonicalType except that enums have the /// full range of their type, not the range of their enumerators. static IntRange forTargetOfCanonicalType(ASTContext &C, const Type *T) { assert(T->isCanonicalUnqualified()); if (const VectorType *VT = dyn_cast(T)) T = VT->getElementType().getTypePtr(); if (const ComplexType *CT = dyn_cast(T)) T = CT->getElementType().getTypePtr(); if (const EnumType *ET = dyn_cast(T)) T = C.getCanonicalType(ET->getDecl()->getIntegerType()).getTypePtr(); const BuiltinType *BT = cast(T); assert(BT->isInteger()); return IntRange(C.getIntWidth(QualType(T, 0)), BT->isUnsignedInteger()); } /// Returns the supremum of two ranges: i.e. their conservative merge. static IntRange join(IntRange L, IntRange R) { return IntRange(std::max(L.Width, R.Width), L.NonNegative && R.NonNegative); } /// Returns the infinum of two ranges: i.e. their aggressive merge. static IntRange meet(IntRange L, IntRange R) { return IntRange(std::min(L.Width, R.Width), L.NonNegative || R.NonNegative); } }; static IntRange GetValueRange(ASTContext &C, llvm::APSInt &value, unsigned MaxWidth) { if (value.isSigned() && value.isNegative()) return IntRange(value.getMinSignedBits(), false); if (value.getBitWidth() > MaxWidth) value = value.trunc(MaxWidth); // isNonNegative() just checks the sign bit without considering // signedness. return IntRange(value.getActiveBits(), true); } static IntRange GetValueRange(ASTContext &C, APValue &result, QualType Ty, unsigned MaxWidth) { if (result.isInt()) return GetValueRange(C, result.getInt(), MaxWidth); if (result.isVector()) { IntRange R = GetValueRange(C, result.getVectorElt(0), Ty, MaxWidth); for (unsigned i = 1, e = result.getVectorLength(); i != e; ++i) { IntRange El = GetValueRange(C, result.getVectorElt(i), Ty, MaxWidth); R = IntRange::join(R, El); } return R; } if (result.isComplexInt()) { IntRange R = GetValueRange(C, result.getComplexIntReal(), MaxWidth); IntRange I = GetValueRange(C, result.getComplexIntImag(), MaxWidth); return IntRange::join(R, I); } // This can happen with lossless casts to intptr_t of "based" lvalues. // Assume it might use arbitrary bits. // FIXME: The only reason we need to pass the type in here is to get // the sign right on this one case. It would be nice if APValue // preserved this. assert(result.isLValue() || result.isAddrLabelDiff()); return IntRange(MaxWidth, Ty->isUnsignedIntegerOrEnumerationType()); } static QualType GetExprType(Expr *E) { QualType Ty = E->getType(); if (const AtomicType *AtomicRHS = Ty->getAs()) Ty = AtomicRHS->getValueType(); return Ty; } /// Pseudo-evaluate the given integer expression, estimating the /// range of values it might take. /// /// \param MaxWidth - the width to which the value will be truncated static IntRange GetExprRange(ASTContext &C, Expr *E, unsigned MaxWidth) { E = E->IgnoreParens(); // Try a full evaluation first. Expr::EvalResult result; if (E->EvaluateAsRValue(result, C)) return GetValueRange(C, result.Val, GetExprType(E), MaxWidth); // I think we only want to look through implicit casts here; if the // user has an explicit widening cast, we should treat the value as // being of the new, wider type. if (ImplicitCastExpr *CE = dyn_cast(E)) { if (CE->getCastKind() == CK_NoOp || CE->getCastKind() == CK_LValueToRValue) return GetExprRange(C, CE->getSubExpr(), MaxWidth); IntRange OutputTypeRange = IntRange::forValueOfType(C, GetExprType(CE)); bool isIntegerCast = (CE->getCastKind() == CK_IntegralCast); // Assume that non-integer casts can span the full range of the type. if (!isIntegerCast) return OutputTypeRange; IntRange SubRange = GetExprRange(C, CE->getSubExpr(), std::min(MaxWidth, OutputTypeRange.Width)); // Bail out if the subexpr's range is as wide as the cast type. if (SubRange.Width >= OutputTypeRange.Width) return OutputTypeRange; // Otherwise, we take the smaller width, and we're non-negative if // either the output type or the subexpr is. return IntRange(SubRange.Width, SubRange.NonNegative || OutputTypeRange.NonNegative); } if (ConditionalOperator *CO = dyn_cast(E)) { // If we can fold the condition, just take that operand. bool CondResult; if (CO->getCond()->EvaluateAsBooleanCondition(CondResult, C)) return GetExprRange(C, CondResult ? CO->getTrueExpr() : CO->getFalseExpr(), MaxWidth); // Otherwise, conservatively merge. IntRange L = GetExprRange(C, CO->getTrueExpr(), MaxWidth); IntRange R = GetExprRange(C, CO->getFalseExpr(), MaxWidth); return IntRange::join(L, R); } if (BinaryOperator *BO = dyn_cast(E)) { switch (BO->getOpcode()) { // Boolean-valued operations are single-bit and positive. case BO_LAnd: case BO_LOr: case BO_LT: case BO_GT: case BO_LE: case BO_GE: case BO_EQ: case BO_NE: return IntRange::forBoolType(); // The type of the assignments is the type of the LHS, so the RHS // is not necessarily the same type. case BO_MulAssign: case BO_DivAssign: case BO_RemAssign: case BO_AddAssign: case BO_SubAssign: case BO_XorAssign: case BO_OrAssign: // TODO: bitfields? return IntRange::forValueOfType(C, GetExprType(E)); // Simple assignments just pass through the RHS, which will have // been coerced to the LHS type. case BO_Assign: // TODO: bitfields? return GetExprRange(C, BO->getRHS(), MaxWidth); // Operations with opaque sources are black-listed. case BO_PtrMemD: case BO_PtrMemI: return IntRange::forValueOfType(C, GetExprType(E)); // Bitwise-and uses the *infinum* of the two source ranges. case BO_And: case BO_AndAssign: return IntRange::meet(GetExprRange(C, BO->getLHS(), MaxWidth), GetExprRange(C, BO->getRHS(), MaxWidth)); // Left shift gets black-listed based on a judgement call. case BO_Shl: // ...except that we want to treat '1 << (blah)' as logically // positive. It's an important idiom. if (IntegerLiteral *I = dyn_cast(BO->getLHS()->IgnoreParenCasts())) { if (I->getValue() == 1) { IntRange R = IntRange::forValueOfType(C, GetExprType(E)); return IntRange(R.Width, /*NonNegative*/ true); } } // fallthrough case BO_ShlAssign: return IntRange::forValueOfType(C, GetExprType(E)); // Right shift by a constant can narrow its left argument. case BO_Shr: case BO_ShrAssign: { IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); // If the shift amount is a positive constant, drop the width by // that much. llvm::APSInt shift; if (BO->getRHS()->isIntegerConstantExpr(shift, C) && shift.isNonNegative()) { unsigned zext = shift.getZExtValue(); if (zext >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width -= zext; } return L; } // Comma acts as its right operand. case BO_Comma: return GetExprRange(C, BO->getRHS(), MaxWidth); // Black-list pointer subtractions. case BO_Sub: if (BO->getLHS()->getType()->isPointerType()) return IntRange::forValueOfType(C, GetExprType(E)); break; // The width of a division result is mostly determined by the size // of the LHS. case BO_Div: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); // If the divisor is constant, use that. llvm::APSInt divisor; if (BO->getRHS()->isIntegerConstantExpr(divisor, C)) { unsigned log2 = divisor.logBase2(); // floor(log_2(divisor)) if (log2 >= L.Width) L.Width = (L.NonNegative ? 0 : 1); else L.Width = std::min(L.Width - log2, MaxWidth); return L; } // Otherwise, just use the LHS's width. IntRange R = GetExprRange(C, BO->getRHS(), opWidth); return IntRange(L.Width, L.NonNegative && R.NonNegative); } // The result of a remainder can't be larger than the result of // either side. case BO_Rem: { // Don't 'pre-truncate' the operands. unsigned opWidth = C.getIntWidth(GetExprType(E)); IntRange L = GetExprRange(C, BO->getLHS(), opWidth); IntRange R = GetExprRange(C, BO->getRHS(), opWidth); IntRange meet = IntRange::meet(L, R); meet.Width = std::min(meet.Width, MaxWidth); return meet; } // The default behavior is okay for these. case BO_Mul: case BO_Add: case BO_Xor: case BO_Or: break; } // The default case is to treat the operation as if it were closed // on the narrowest type that encompasses both operands. IntRange L = GetExprRange(C, BO->getLHS(), MaxWidth); IntRange R = GetExprRange(C, BO->getRHS(), MaxWidth); return IntRange::join(L, R); } if (UnaryOperator *UO = dyn_cast(E)) { switch (UO->getOpcode()) { // Boolean-valued operations are white-listed. case UO_LNot: return IntRange::forBoolType(); // Operations with opaque sources are black-listed. case UO_Deref: case UO_AddrOf: // should be impossible return IntRange::forValueOfType(C, GetExprType(E)); default: return GetExprRange(C, UO->getSubExpr(), MaxWidth); } } if (OpaqueValueExpr *OVE = dyn_cast(E)) return GetExprRange(C, OVE->getSourceExpr(), MaxWidth); if (FieldDecl *BitField = E->getSourceBitField()) return IntRange(BitField->getBitWidthValue(C), BitField->getType()->isUnsignedIntegerOrEnumerationType()); return IntRange::forValueOfType(C, GetExprType(E)); } static IntRange GetExprRange(ASTContext &C, Expr *E) { return GetExprRange(C, E, C.getIntWidth(GetExprType(E))); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. static bool IsSameFloatAfterCast(const llvm::APFloat &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { llvm::APFloat truncated = value; bool ignored; truncated.convert(Src, llvm::APFloat::rmNearestTiesToEven, &ignored); truncated.convert(Tgt, llvm::APFloat::rmNearestTiesToEven, &ignored); return truncated.bitwiseIsEqual(value); } /// Checks whether the given value, which currently has the given /// source semantics, has the same value when coerced through the /// target semantics. /// /// The value might be a vector of floats (or a complex number). static bool IsSameFloatAfterCast(const APValue &value, const llvm::fltSemantics &Src, const llvm::fltSemantics &Tgt) { if (value.isFloat()) return IsSameFloatAfterCast(value.getFloat(), Src, Tgt); if (value.isVector()) { for (unsigned i = 0, e = value.getVectorLength(); i != e; ++i) if (!IsSameFloatAfterCast(value.getVectorElt(i), Src, Tgt)) return false; return true; } assert(value.isComplexFloat()); return (IsSameFloatAfterCast(value.getComplexFloatReal(), Src, Tgt) && IsSameFloatAfterCast(value.getComplexFloatImag(), Src, Tgt)); } static void AnalyzeImplicitConversions(Sema &S, Expr *E, SourceLocation CC); static bool IsZero(Sema &S, Expr *E) { // Suppress cases where we are comparing against an enum constant. if (const DeclRefExpr *DR = dyn_cast(E->IgnoreParenImpCasts())) if (isa(DR->getDecl())) return false; // Suppress cases where the '0' value is expanded from a macro. if (E->getLocStart().isMacroID()) return false; llvm::APSInt Value; return E->isIntegerConstantExpr(Value, S.Context) && Value == 0; } static bool HasEnumType(Expr *E) { // Strip off implicit integral promotions. while (ImplicitCastExpr *ICE = dyn_cast(E)) { if (ICE->getCastKind() != CK_IntegralCast && ICE->getCastKind() != CK_NoOp) break; E = ICE->getSubExpr(); } return E->getType()->isEnumeralType(); } static void CheckTrivialUnsignedComparison(Sema &S, BinaryOperator *E) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; BinaryOperatorKind op = E->getOpcode(); if (E->isValueDependent()) return; if (op == BO_LT && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << "< 0" << "false" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GE && IsZero(S, E->getRHS())) { S.Diag(E->getOperatorLoc(), diag::warn_lunsigned_always_true_comparison) << ">= 0" << "true" << HasEnumType(E->getLHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_GT && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 >" << "false" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (op == BO_LE && IsZero(S, E->getLHS())) { S.Diag(E->getOperatorLoc(), diag::warn_runsigned_always_true_comparison) << "0 <=" << "true" << HasEnumType(E->getRHS()) << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } } static void DiagnoseOutOfRangeComparison(Sema &S, BinaryOperator *E, Expr *Constant, Expr *Other, llvm::APSInt Value, bool RhsConstant) { // Disable warning in template instantiations. if (!S.ActiveTemplateInstantiations.empty()) return; // 0 values are handled later by CheckTrivialUnsignedComparison(). if (Value == 0) return; BinaryOperatorKind op = E->getOpcode(); QualType OtherT = Other->getType(); QualType ConstantT = Constant->getType(); QualType CommonT = E->getLHS()->getType(); if (S.Context.hasSameUnqualifiedType(OtherT, ConstantT)) return; assert((OtherT->isIntegerType() && ConstantT->isIntegerType()) && "comparison with non-integer type"); bool ConstantSigned = ConstantT->isSignedIntegerType(); bool CommonSigned = CommonT->isSignedIntegerType(); bool EqualityOnly = false; // TODO: Investigate using GetExprRange() to get tighter bounds on // on the bit ranges. IntRange OtherRange = IntRange::forValueOfType(S.Context, OtherT); unsigned OtherWidth = OtherRange.Width; if (CommonSigned) { // The common type is signed, therefore no signed to unsigned conversion. if (!OtherRange.NonNegative) { // Check that the constant is representable in type OtherT. if (ConstantSigned) { if (OtherWidth >= Value.getMinSignedBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits() + 1) return; } } else { // !OtherSigned // Check that the constant is representable in type OtherT. // Negative values are out of range. if (ConstantSigned) { if (Value.isNonNegative() && OtherWidth >= Value.getActiveBits()) return; } else { // !ConstantSigned if (OtherWidth >= Value.getActiveBits()) return; } } } else { // !CommonSigned if (OtherRange.NonNegative) { if (OtherWidth >= Value.getActiveBits()) return; } else if (!OtherRange.NonNegative && !ConstantSigned) { // Check to see if the constant is representable in OtherT. if (OtherWidth > Value.getActiveBits()) return; // Check to see if the constant is equivalent to a negative value // cast to CommonT. if (S.Context.getIntWidth(ConstantT) == S.Context.getIntWidth(CommonT) && Value.isNegative() && Value.getMinSignedBits() <= OtherWidth) return; // The constant value rests between values that OtherT can represent after // conversion. Relational comparison still works, but equality // comparisons will be tautological. EqualityOnly = true; } else { // OtherSigned && ConstantSigned assert(0 && "Two signed types converted to unsigned types."); } } bool PositiveConstant = !ConstantSigned || Value.isNonNegative(); bool IsTrue = true; if (op == BO_EQ || op == BO_NE) { IsTrue = op == BO_NE; } else if (EqualityOnly) { return; } else if (RhsConstant) { if (op == BO_GT || op == BO_GE) IsTrue = !PositiveConstant; else // op == BO_LT || op == BO_LE IsTrue = PositiveConstant; } else { if (op == BO_LT || op == BO_LE) IsTrue = !PositiveConstant; else // op == BO_GT || op == BO_GE IsTrue = PositiveConstant; } // If this is a comparison to an enum constant, include that // constant in the diagnostic. const EnumConstantDecl *ED = 0; if (const DeclRefExpr *DR = dyn_cast(Constant)) ED = dyn_cast(DR->getDecl()); SmallString<64> PrettySourceValue; llvm::raw_svector_ostream OS(PrettySourceValue); if (ED) OS << '\'' << *ED << "' (" << Value << ")"; else OS << Value; S.DiagRuntimeBehavior(E->getOperatorLoc(), E, S.PDiag(diag::warn_out_of_range_compare) << OS.str() << OtherT << IsTrue << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange()); } /// Analyze the operands of the given comparison. Implements the /// fallback case from AnalyzeComparison. static void AnalyzeImpConvsInComparison(Sema &S, BinaryOperator *E) { AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// \brief Implements -Wsign-compare. /// /// \param E the binary operator to check for warnings static void AnalyzeComparison(Sema &S, BinaryOperator *E) { // The type the comparison is being performed in. QualType T = E->getLHS()->getType(); assert(S.Context.hasSameUnqualifiedType(T, E->getRHS()->getType()) && "comparison with mismatched types"); if (E->isValueDependent()) return AnalyzeImpConvsInComparison(S, E); Expr *LHS = E->getLHS()->IgnoreParenImpCasts(); Expr *RHS = E->getRHS()->IgnoreParenImpCasts(); bool IsComparisonConstant = false; // Check whether an integer constant comparison results in a value // of 'true' or 'false'. if (T->isIntegralType(S.Context)) { llvm::APSInt RHSValue; bool IsRHSIntegralLiteral = RHS->isIntegerConstantExpr(RHSValue, S.Context); llvm::APSInt LHSValue; bool IsLHSIntegralLiteral = LHS->isIntegerConstantExpr(LHSValue, S.Context); if (IsRHSIntegralLiteral && !IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, RHS, LHS, RHSValue, true); else if (!IsRHSIntegralLiteral && IsLHSIntegralLiteral) DiagnoseOutOfRangeComparison(S, E, LHS, RHS, LHSValue, false); else IsComparisonConstant = (IsRHSIntegralLiteral && IsLHSIntegralLiteral); } else if (!T->hasUnsignedIntegerRepresentation()) IsComparisonConstant = E->isIntegerConstantExpr(S.Context); // We don't do anything special if this isn't an unsigned integral // comparison: we're only interested in integral comparisons, and // signed comparisons only happen in cases we don't care to warn about. // // We also don't care about value-dependent expressions or expressions // whose result is a constant. if (!T->hasUnsignedIntegerRepresentation() || IsComparisonConstant) return AnalyzeImpConvsInComparison(S, E); // Check to see if one of the (unmodified) operands is of different // signedness. Expr *signedOperand, *unsignedOperand; if (LHS->getType()->hasSignedIntegerRepresentation()) { assert(!RHS->getType()->hasSignedIntegerRepresentation() && "unsigned comparison between two signed integer expressions?"); signedOperand = LHS; unsignedOperand = RHS; } else if (RHS->getType()->hasSignedIntegerRepresentation()) { signedOperand = RHS; unsignedOperand = LHS; } else { CheckTrivialUnsignedComparison(S, E); return AnalyzeImpConvsInComparison(S, E); } // Otherwise, calculate the effective range of the signed operand. IntRange signedRange = GetExprRange(S.Context, signedOperand); // Go ahead and analyze implicit conversions in the operands. Note // that we skip the implicit conversions on both sides. AnalyzeImplicitConversions(S, LHS, E->getOperatorLoc()); AnalyzeImplicitConversions(S, RHS, E->getOperatorLoc()); // If the signed range is non-negative, -Wsign-compare won't fire, // but we should still check for comparisons which are always true // or false. if (signedRange.NonNegative) return CheckTrivialUnsignedComparison(S, E); // For (in)equality comparisons, if the unsigned operand is a // constant which cannot collide with a overflowed signed operand, // then reinterpreting the signed operand as unsigned will not // change the result of the comparison. if (E->isEqualityOp()) { unsigned comparisonWidth = S.Context.getIntWidth(T); IntRange unsignedRange = GetExprRange(S.Context, unsignedOperand); // We should never be unable to prove that the unsigned operand is // non-negative. assert(unsignedRange.NonNegative && "unsigned range includes negative?"); if (unsignedRange.Width < comparisonWidth) return; } S.DiagRuntimeBehavior(E->getOperatorLoc(), E, S.PDiag(diag::warn_mixed_sign_comparison) << LHS->getType() << RHS->getType() << LHS->getSourceRange() << RHS->getSourceRange()); } /// Analyzes an attempt to assign the given value to a bitfield. /// /// Returns true if there was something fishy about the attempt. static bool AnalyzeBitFieldAssignment(Sema &S, FieldDecl *Bitfield, Expr *Init, SourceLocation InitLoc) { assert(Bitfield->isBitField()); if (Bitfield->isInvalidDecl()) return false; // White-list bool bitfields. if (Bitfield->getType()->isBooleanType()) return false; // Ignore value- or type-dependent expressions. if (Bitfield->getBitWidth()->isValueDependent() || Bitfield->getBitWidth()->isTypeDependent() || Init->isValueDependent() || Init->isTypeDependent()) return false; Expr *OriginalInit = Init->IgnoreParenImpCasts(); llvm::APSInt Value; if (!OriginalInit->EvaluateAsInt(Value, S.Context, Expr::SE_AllowSideEffects)) return false; unsigned OriginalWidth = Value.getBitWidth(); unsigned FieldWidth = Bitfield->getBitWidthValue(S.Context); if (OriginalWidth <= FieldWidth) return false; // Compute the value which the bitfield will contain. llvm::APSInt TruncatedValue = Value.trunc(FieldWidth); TruncatedValue.setIsSigned(Bitfield->getType()->isSignedIntegerType()); // Check whether the stored value is equal to the original value. TruncatedValue = TruncatedValue.extend(OriginalWidth); if (llvm::APSInt::isSameValue(Value, TruncatedValue)) return false; // Special-case bitfields of width 1: booleans are naturally 0/1, and // therefore don't strictly fit into a signed bitfield of width 1. if (FieldWidth == 1 && Value == 1) return false; std::string PrettyValue = Value.toString(10); std::string PrettyTrunc = TruncatedValue.toString(10); S.Diag(InitLoc, diag::warn_impcast_bitfield_precision_constant) << PrettyValue << PrettyTrunc << OriginalInit->getType() << Init->getSourceRange(); return true; } /// Analyze the given simple or compound assignment for warning-worthy /// operations. static void AnalyzeAssignment(Sema &S, BinaryOperator *E) { // Just recurse on the LHS. AnalyzeImplicitConversions(S, E->getLHS(), E->getOperatorLoc()); // We want to recurse on the RHS as normal unless we're assigning to // a bitfield. if (FieldDecl *Bitfield = E->getLHS()->getSourceBitField()) { if (AnalyzeBitFieldAssignment(S, Bitfield, E->getRHS(), E->getOperatorLoc())) { // Recurse, ignoring any implicit conversions on the RHS. return AnalyzeImplicitConversions(S, E->getRHS()->IgnoreParenImpCasts(), E->getOperatorLoc()); } } AnalyzeImplicitConversions(S, E->getRHS(), E->getOperatorLoc()); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType SourceType, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { if (pruneControlFlow) { S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext)); return; } S.Diag(E->getExprLoc(), diag) << SourceType << T << E->getSourceRange() << SourceRange(CContext); } /// Diagnose an implicit cast; purely a helper for CheckImplicitConversion. static void DiagnoseImpCast(Sema &S, Expr *E, QualType T, SourceLocation CContext, unsigned diag, bool pruneControlFlow = false) { DiagnoseImpCast(S, E, E->getType(), T, CContext, diag, pruneControlFlow); } /// Diagnose an implicit cast from a literal expression. Does not warn when the /// cast wouldn't lose information. void DiagnoseFloatingLiteralImpCast(Sema &S, FloatingLiteral *FL, QualType T, SourceLocation CContext) { // Try to convert the literal exactly to an integer. If we can, don't warn. bool isExact = false; const llvm::APFloat &Value = FL->getValue(); llvm::APSInt IntegerValue(S.Context.getIntWidth(T), T->hasUnsignedIntegerRepresentation()); if (Value.convertToInteger(IntegerValue, llvm::APFloat::rmTowardZero, &isExact) == llvm::APFloat::opOK && isExact) return; // FIXME: Force the precision of the source value down so we don't print // digits which are usually useless (we don't really care here if we // truncate a digit by accident in edge cases). Ideally, APFloat::toString // would automatically print the shortest representation, but it's a bit // tricky to implement. SmallString<16> PrettySourceValue; unsigned precision = llvm::APFloat::semanticsPrecision(Value.getSemantics()); precision = (precision * 59 + 195) / 196; Value.toString(PrettySourceValue, precision); SmallString<16> PrettyTargetValue; if (T->isSpecificBuiltinType(BuiltinType::Bool)) PrettyTargetValue = IntegerValue == 0 ? "false" : "true"; else IntegerValue.toString(PrettyTargetValue); S.Diag(FL->getExprLoc(), diag::warn_impcast_literal_float_to_integer) << FL->getType() << T.getUnqualifiedType() << PrettySourceValue << PrettyTargetValue << FL->getSourceRange() << SourceRange(CContext); } std::string PrettyPrintInRange(const llvm::APSInt &Value, IntRange Range) { if (!Range.Width) return "0"; llvm::APSInt ValueInRange = Value; ValueInRange.setIsSigned(!Range.NonNegative); ValueInRange = ValueInRange.trunc(Range.Width); return ValueInRange.toString(10); } static bool IsImplicitBoolFloatConversion(Sema &S, Expr *Ex, bool ToBool) { if (!isa(Ex)) return false; Expr *InnerE = Ex->IgnoreParenImpCasts(); const Type *Target = S.Context.getCanonicalType(Ex->getType()).getTypePtr(); const Type *Source = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (Target->isDependentType()) return false; const BuiltinType *FloatCandidateBT = dyn_cast(ToBool ? Source : Target); const Type *BoolCandidateType = ToBool ? Target : Source; return (BoolCandidateType->isSpecificBuiltinType(BuiltinType::Bool) && FloatCandidateBT && (FloatCandidateBT->isFloatingPoint())); } void CheckImplicitArgumentConversions(Sema &S, CallExpr *TheCall, SourceLocation CC) { unsigned NumArgs = TheCall->getNumArgs(); for (unsigned i = 0; i < NumArgs; ++i) { Expr *CurrA = TheCall->getArg(i); if (!IsImplicitBoolFloatConversion(S, CurrA, true)) continue; bool IsSwapped = ((i > 0) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i - 1), false)); IsSwapped |= ((i < (NumArgs - 1)) && IsImplicitBoolFloatConversion(S, TheCall->getArg(i + 1), false)); if (IsSwapped) { // Warn on this floating-point to bool conversion. DiagnoseImpCast(S, CurrA->IgnoreParenImpCasts(), CurrA->getType(), CC, diag::warn_impcast_floating_point_to_bool); } } } void CheckImplicitConversion(Sema &S, Expr *E, QualType T, SourceLocation CC, bool *ICContext = 0) { if (E->isTypeDependent() || E->isValueDependent()) return; const Type *Source = S.Context.getCanonicalType(E->getType()).getTypePtr(); const Type *Target = S.Context.getCanonicalType(T).getTypePtr(); if (Source == Target) return; if (Target->isDependentType()) return; // If the conversion context location is invalid don't complain. We also // don't want to emit a warning if the issue occurs from the expansion of // a system macro. The problem is that 'getSpellingLoc()' is slow, so we // delay this check as long as possible. Once we detect we are in that // scenario, we just return. if (CC.isInvalid()) return; // Diagnose implicit casts to bool. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) { if (isa(E)) // Warn on string literal to bool. Checks for string literals in logical // and expressions, for instance, assert(0 && "error here"), are // prevented by a check in AnalyzeImplicitConversions(). return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_string_literal_to_bool); if (isa(E) || isa(E) || isa(E) || isa(E)) { // This covers the literal expressions that evaluate to Objective-C // objects. return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_objective_c_literal_to_bool); } if (Source->isPointerType() || Source->canDecayToPointerType()) { // Warn on pointer to bool conversion that is always true. S.DiagnoseAlwaysNonNullPointer(E, Expr::NPCK_NotNull, /*IsEqual*/ false, SourceRange(CC)); } } // Strip vector types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_vector_scalar); } // If the vector cast is cast between two vectors of the same size, it is // a bitcast, not a conversion. if (S.Context.getTypeSize(Source) == S.Context.getTypeSize(Target)) return; Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } // Strip complex types. if (isa(Source)) { if (!isa(Target)) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_complex_scalar); } Source = cast(Source)->getElementType().getTypePtr(); Target = cast(Target)->getElementType().getTypePtr(); } const BuiltinType *SourceBT = dyn_cast(Source); const BuiltinType *TargetBT = dyn_cast(Target); // If the source is floating point... if (SourceBT && SourceBT->isFloatingPoint()) { // ...and the target is floating point... if (TargetBT && TargetBT->isFloatingPoint()) { // ...then warn if we're dropping FP rank. // Builtin FP kinds are ordered by increasing FP rank. if (SourceBT->getKind() > TargetBT->getKind()) { // Don't warn about float constants that are precisely // representable in the target type. Expr::EvalResult result; if (E->EvaluateAsRValue(result, S.Context)) { // Value might be a float, a float vector, or a float complex. if (IsSameFloatAfterCast(result.Val, S.Context.getFloatTypeSemantics(QualType(TargetBT, 0)), S.Context.getFloatTypeSemantics(QualType(SourceBT, 0)))) return; } if (S.SourceMgr.isInSystemMacro(CC)) return; DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_precision); } return; } // If the target is integral, always warn. if (TargetBT && TargetBT->isInteger()) { if (S.SourceMgr.isInSystemMacro(CC)) return; Expr *InnerE = E->IgnoreParenImpCasts(); // We also want to warn on, e.g., "int i = -1.234" if (UnaryOperator *UOp = dyn_cast(InnerE)) if (UOp->getOpcode() == UO_Minus || UOp->getOpcode() == UO_Plus) InnerE = UOp->getSubExpr()->IgnoreParenImpCasts(); if (FloatingLiteral *FL = dyn_cast(InnerE)) { DiagnoseFloatingLiteralImpCast(S, FL, T, CC); } else { DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_float_integer); } } // If the target is bool, warn if expr is a function or method call. if (Target->isSpecificBuiltinType(BuiltinType::Bool) && isa(E)) { // Check last argument of function call to see if it is an // implicit cast from a type matching the type the result // is being cast to. CallExpr *CEx = cast(E); unsigned NumArgs = CEx->getNumArgs(); if (NumArgs > 0) { Expr *LastA = CEx->getArg(NumArgs - 1); Expr *InnerE = LastA->IgnoreParenImpCasts(); const Type *InnerType = S.Context.getCanonicalType(InnerE->getType()).getTypePtr(); if (isa(LastA) && (InnerType == Target)) { // Warn on this floating-point to bool conversion DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_floating_point_to_bool); } } } return; } if ((E->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull) == Expr::NPCK_GNUNull) && !Target->isAnyPointerType() && !Target->isBlockPointerType() && !Target->isMemberPointerType() && Target->isScalarType() && !Target->isNullPtrType()) { SourceLocation Loc = E->getSourceRange().getBegin(); if (Loc.isMacroID()) Loc = S.SourceMgr.getImmediateExpansionRange(Loc).first; if (!Loc.isMacroID() || CC.isMacroID()) S.Diag(Loc, diag::warn_impcast_null_pointer_to_integer) << T << clang::SourceRange(CC) << FixItHint::CreateReplacement(Loc, S.getFixItZeroLiteralForType(T, Loc)); } if (!Source->isIntegerType() || !Target->isIntegerType()) return; // TODO: remove this early return once the false positives for constant->bool // in templates, macros, etc, are reduced or removed. if (Target->isSpecificBuiltinType(BuiltinType::Bool)) return; IntRange SourceRange = GetExprRange(S.Context, E); IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target); if (SourceRange.Width > TargetRange.Width) { // If the source is a constant, use a default-on diagnostic. // TODO: this should happen for bitfield stores, too. llvm::APSInt Value(32); if (E->isIntegerConstantExpr(Value, S.Context)) { if (S.SourceMgr.isInSystemMacro(CC)) return; std::string PrettySourceValue = Value.toString(10); std::string PrettyTargetValue = PrettyPrintInRange(Value, TargetRange); S.DiagRuntimeBehavior(E->getExprLoc(), E, S.PDiag(diag::warn_impcast_integer_precision_constant) << PrettySourceValue << PrettyTargetValue << E->getType() << T << E->getSourceRange() << clang::SourceRange(CC)); return; } // People want to build with -Wshorten-64-to-32 and not -Wconversion. if (S.SourceMgr.isInSystemMacro(CC)) return; if (TargetRange.Width == 32 && S.Context.getIntWidth(E->getType()) == 64) return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_64_32, /* pruneControlFlow */ true); return DiagnoseImpCast(S, E, T, CC, diag::warn_impcast_integer_precision); } if ((TargetRange.NonNegative && !SourceRange.NonNegative) || (!TargetRange.NonNegative && SourceRange.NonNegative && SourceRange.Width == TargetRange.Width)) { if (S.SourceMgr.isInSystemMacro(CC)) return; unsigned DiagID = diag::warn_impcast_integer_sign; // Traditionally, gcc has warned about this under -Wsign-compare. // We also want to warn about it in -Wconversion. // So if -Wconversion is off, use a completely identical diagnostic // in the sign-compare group. // The conditional-checking code will if (ICContext) { DiagID = diag::warn_impcast_integer_sign_conditional; *ICContext = true; } return DiagnoseImpCast(S, E, T, CC, DiagID); } // Diagnose conversions between different enumeration types. // In C, we pretend that the type of an EnumConstantDecl is its enumeration // type, to give us better diagnostics. QualType SourceType = E->getType(); if (!S.getLangOpts().CPlusPlus) { if (DeclRefExpr *DRE = dyn_cast(E)) if (EnumConstantDecl *ECD = dyn_cast(DRE->getDecl())) { EnumDecl *Enum = cast(ECD->getDeclContext()); SourceType = S.Context.getTypeDeclType(Enum); Source = S.Context.getCanonicalType(SourceType).getTypePtr(); } } if (const EnumType *SourceEnum = Source->getAs()) if (const EnumType *TargetEnum = Target->getAs()) if (SourceEnum->getDecl()->hasNameForLinkage() && TargetEnum->getDecl()->hasNameForLinkage() && SourceEnum != TargetEnum) { if (S.SourceMgr.isInSystemMacro(CC)) return; return DiagnoseImpCast(S, E, SourceType, T, CC, diag::warn_impcast_different_enum_types); } return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T); void CheckConditionalOperand(Sema &S, Expr *E, QualType T, SourceLocation CC, bool &ICContext) { E = E->IgnoreParenImpCasts(); if (isa(E)) return CheckConditionalOperator(S, cast(E), CC, T); AnalyzeImplicitConversions(S, E, CC); if (E->getType() != T) return CheckImplicitConversion(S, E, T, CC, &ICContext); return; } void CheckConditionalOperator(Sema &S, ConditionalOperator *E, SourceLocation CC, QualType T) { AnalyzeImplicitConversions(S, E->getCond(), CC); bool Suspicious = false; CheckConditionalOperand(S, E->getTrueExpr(), T, CC, Suspicious); CheckConditionalOperand(S, E->getFalseExpr(), T, CC, Suspicious); // If -Wconversion would have warned about either of the candidates // for a signedness conversion to the context type... if (!Suspicious) return; // ...but it's currently ignored... if (S.Diags.getDiagnosticLevel(diag::warn_impcast_integer_sign_conditional, CC)) return; // ...then check whether it would have warned about either of the // candidates for a signedness conversion to the condition type. if (E->getType() == T) return; Suspicious = false; CheckImplicitConversion(S, E->getTrueExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); if (!Suspicious) CheckImplicitConversion(S, E->getFalseExpr()->IgnoreParenImpCasts(), E->getType(), CC, &Suspicious); } /// AnalyzeImplicitConversions - Find and report any interesting /// implicit conversions in the given expression. There are a couple /// of competing diagnostics here, -Wconversion and -Wsign-compare. void AnalyzeImplicitConversions(Sema &S, Expr *OrigE, SourceLocation CC) { QualType T = OrigE->getType(); Expr *E = OrigE->IgnoreParenImpCasts(); if (E->isTypeDependent() || E->isValueDependent()) return; // For conditional operators, we analyze the arguments as if they // were being fed directly into the output. if (isa(E)) { ConditionalOperator *CO = cast(E); CheckConditionalOperator(S, CO, CC, T); return; } // Check implicit argument conversions for function calls. if (CallExpr *Call = dyn_cast(E)) CheckImplicitArgumentConversions(S, Call, CC); // Go ahead and check any implicit conversions we might have skipped. // The non-canonical typecheck is just an optimization; // CheckImplicitConversion will filter out dead implicit conversions. if (E->getType() != T) CheckImplicitConversion(S, E, T, CC); // Now continue drilling into this expression. if (PseudoObjectExpr * POE = dyn_cast(E)) { if (POE->getResultExpr()) E = POE->getResultExpr(); } if (const OpaqueValueExpr *OVE = dyn_cast(E)) return AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC); // Skip past explicit casts. if (isa(E)) { E = cast(E)->getSubExpr()->IgnoreParenImpCasts(); return AnalyzeImplicitConversions(S, E, CC); } if (BinaryOperator *BO = dyn_cast(E)) { // Do a somewhat different check with comparison operators. if (BO->isComparisonOp()) return AnalyzeComparison(S, BO); // And with simple assignments. if (BO->getOpcode() == BO_Assign) return AnalyzeAssignment(S, BO); } // These break the otherwise-useful invariant below. Fortunately, // we don't really need to recurse into them, because any internal // expressions should have been analyzed already when they were // built into statements. if (isa(E)) return; // Don't descend into unevaluated contexts. if (isa(E)) return; // Now just recurse over the expression's children. CC = E->getExprLoc(); BinaryOperator *BO = dyn_cast(E); bool IsLogicalAndOperator = BO && BO->getOpcode() == BO_LAnd; for (Stmt::child_range I = E->children(); I; ++I) { Expr *ChildExpr = dyn_cast_or_null(*I); if (!ChildExpr) continue; if (IsLogicalAndOperator && isa(ChildExpr->IgnoreParenImpCasts())) // Ignore checking string literals that are in logical and operators. // This is a common pattern for asserts. continue; AnalyzeImplicitConversions(S, ChildExpr, CC); } } } // end anonymous namespace enum { AddressOf, FunctionPointer, ArrayPointer }; /// \brief Diagnose pointers that are always non-null. /// \param E the expression containing the pointer /// \param NullKind NPCK_NotNull if E is a cast to bool, otherwise, E is /// compared to a null pointer /// \param IsEqual True when the comparison is equal to a null pointer /// \param Range Extra SourceRange to highlight in the diagnostic void Sema::DiagnoseAlwaysNonNullPointer(Expr *E, Expr::NullPointerConstantKind NullKind, bool IsEqual, SourceRange Range) { // Don't warn inside macros. if (E->getExprLoc().isMacroID()) return; E = E->IgnoreImpCasts(); const bool IsCompare = NullKind != Expr::NPCK_NotNull; bool IsAddressOf = false; if (UnaryOperator *UO = dyn_cast(E)) { if (UO->getOpcode() != UO_AddrOf) return; IsAddressOf = true; E = UO->getSubExpr(); } // Expect to find a single Decl. Skip anything more complicated. ValueDecl *D = 0; if (DeclRefExpr *R = dyn_cast(E)) { D = R->getDecl(); } else if (MemberExpr *M = dyn_cast(E)) { D = M->getMemberDecl(); } // Weak Decls can be null. if (!D || D->isWeak()) return; QualType T = D->getType(); const bool IsArray = T->isArrayType(); const bool IsFunction = T->isFunctionType(); if (IsAddressOf) { // Address of function is used to silence the function warning. if (IsFunction) return; // Address of reference can be null. if (T->isReferenceType()) return; } // Found nothing. if (!IsAddressOf && !IsFunction && !IsArray) return; // Pretty print the expression for the diagnostic. std::string Str; llvm::raw_string_ostream S(Str); E->printPretty(S, 0, getPrintingPolicy()); unsigned DiagID = IsCompare ? diag::warn_null_pointer_compare : diag::warn_impcast_pointer_to_bool; unsigned DiagType; if (IsAddressOf) DiagType = AddressOf; else if (IsFunction) DiagType = FunctionPointer; else if (IsArray) DiagType = ArrayPointer; else llvm_unreachable("Could not determine diagnostic."); Diag(E->getExprLoc(), DiagID) << DiagType << S.str() << E->getSourceRange() << Range << IsEqual; if (!IsFunction) return; // Suggest '&' to silence the function warning. Diag(E->getExprLoc(), diag::note_function_warning_silence) << FixItHint::CreateInsertion(E->getLocStart(), "&"); // Check to see if '()' fixit should be emitted. QualType ReturnType; UnresolvedSet<4> NonTemplateOverloads; tryExprAsCall(*E, ReturnType, NonTemplateOverloads); if (ReturnType.isNull()) return; if (IsCompare) { // There are two cases here. If there is null constant, the only suggest // for a pointer return type. If the null is 0, then suggest if the return // type is a pointer or an integer type. if (!ReturnType->isPointerType()) { if (NullKind == Expr::NPCK_ZeroExpression || NullKind == Expr::NPCK_ZeroLiteral) { if (!ReturnType->isIntegerType()) return; } else { return; } } } else { // !IsCompare // For function to bool, only suggest if the function pointer has bool // return type. if (!ReturnType->isSpecificBuiltinType(BuiltinType::Bool)) return; } Diag(E->getExprLoc(), diag::note_function_to_function_call) << FixItHint::CreateInsertion( getPreprocessor().getLocForEndOfToken(E->getLocEnd()), "()"); } /// Diagnoses "dangerous" implicit conversions within the given /// expression (which is a full expression). Implements -Wconversion /// and -Wsign-compare. /// /// \param CC the "context" location of the implicit conversion, i.e. /// the most location of the syntactic entity requiring the implicit /// conversion void Sema::CheckImplicitConversions(Expr *E, SourceLocation CC) { // Don't diagnose in unevaluated contexts. if (isUnevaluatedContext()) return; // Don't diagnose for value- or type-dependent expressions. if (E->isTypeDependent() || E->isValueDependent()) return; // Check for array bounds violations in cases where the check isn't triggered // elsewhere for other Expr types (like BinaryOperators), e.g. when an // ArraySubscriptExpr is on the RHS of a variable initialization. CheckArrayAccess(E); // This is not the right CC for (e.g.) a variable initialization. AnalyzeImplicitConversions(*this, E, CC); } /// Diagnose when expression is an integer constant expression and its evaluation /// results in integer overflow void Sema::CheckForIntOverflow (Expr *E) { if (isa(E->IgnoreParens())) E->EvaluateForOverflow(Context); } namespace { /// \brief Visitor for expressions which looks for unsequenced operations on the /// same object. class SequenceChecker : public EvaluatedExprVisitor { typedef EvaluatedExprVisitor Base; /// \brief A tree of sequenced regions within an expression. Two regions are /// unsequenced if one is an ancestor or a descendent of the other. When we /// finish processing an expression with sequencing, such as a comma /// expression, we fold its tree nodes into its parent, since they are /// unsequenced with respect to nodes we will visit later. class SequenceTree { struct Value { explicit Value(unsigned Parent) : Parent(Parent), Merged(false) {} unsigned Parent : 31; bool Merged : 1; }; SmallVector Values; public: /// \brief A region within an expression which may be sequenced with respect /// to some other region. class Seq { explicit Seq(unsigned N) : Index(N) {} unsigned Index; friend class SequenceTree; public: Seq() : Index(0) {} }; SequenceTree() { Values.push_back(Value(0)); } Seq root() const { return Seq(0); } /// \brief Create a new sequence of operations, which is an unsequenced /// subset of \p Parent. This sequence of operations is sequenced with /// respect to other children of \p Parent. Seq allocate(Seq Parent) { Values.push_back(Value(Parent.Index)); return Seq(Values.size() - 1); } /// \brief Merge a sequence of operations into its parent. void merge(Seq S) { Values[S.Index].Merged = true; } /// \brief Determine whether two operations are unsequenced. This operation /// is asymmetric: \p Cur should be the more recent sequence, and \p Old /// should have been merged into its parent as appropriate. bool isUnsequenced(Seq Cur, Seq Old) { unsigned C = representative(Cur.Index); unsigned Target = representative(Old.Index); while (C >= Target) { if (C == Target) return true; C = Values[C].Parent; } return false; } private: /// \brief Pick a representative for a sequence. unsigned representative(unsigned K) { if (Values[K].Merged) // Perform path compression as we go. return Values[K].Parent = representative(Values[K].Parent); return K; } }; /// An object for which we can track unsequenced uses. typedef NamedDecl *Object; /// Different flavors of object usage which we track. We only track the /// least-sequenced usage of each kind. enum UsageKind { /// A read of an object. Multiple unsequenced reads are OK. UK_Use, /// A modification of an object which is sequenced before the value /// computation of the expression, such as ++n in C++. UK_ModAsValue, /// A modification of an object which is not sequenced before the value /// computation of the expression, such as n++. UK_ModAsSideEffect, UK_Count = UK_ModAsSideEffect + 1 }; struct Usage { Usage() : Use(0), Seq() {} Expr *Use; SequenceTree::Seq Seq; }; struct UsageInfo { UsageInfo() : Diagnosed(false) {} Usage Uses[UK_Count]; /// Have we issued a diagnostic for this variable already? bool Diagnosed; }; typedef llvm::SmallDenseMap UsageInfoMap; Sema &SemaRef; /// Sequenced regions within the expression. SequenceTree Tree; /// Declaration modifications and references which we have seen. UsageInfoMap UsageMap; /// The region we are currently within. SequenceTree::Seq Region; /// Filled in with declarations which were modified as a side-effect /// (that is, post-increment operations). SmallVectorImpl > *ModAsSideEffect; /// Expressions to check later. We defer checking these to reduce /// stack usage. SmallVectorImpl &WorkList; /// RAII object wrapping the visitation of a sequenced subexpression of an /// expression. At the end of this process, the side-effects of the evaluation /// become sequenced with respect to the value computation of the result, so /// we downgrade any UK_ModAsSideEffect within the evaluation to /// UK_ModAsValue. struct SequencedSubexpression { SequencedSubexpression(SequenceChecker &Self) : Self(Self), OldModAsSideEffect(Self.ModAsSideEffect) { Self.ModAsSideEffect = &ModAsSideEffect; } ~SequencedSubexpression() { for (unsigned I = 0, E = ModAsSideEffect.size(); I != E; ++I) { UsageInfo &U = Self.UsageMap[ModAsSideEffect[I].first]; U.Uses[UK_ModAsSideEffect] = ModAsSideEffect[I].second; Self.addUsage(U, ModAsSideEffect[I].first, ModAsSideEffect[I].second.Use, UK_ModAsValue); } Self.ModAsSideEffect = OldModAsSideEffect; } SequenceChecker &Self; SmallVector, 4> ModAsSideEffect; SmallVectorImpl > *OldModAsSideEffect; }; /// RAII object wrapping the visitation of a subexpression which we might /// choose to evaluate as a constant. If any subexpression is evaluated and /// found to be non-constant, this allows us to suppress the evaluation of /// the outer expression. class EvaluationTracker { public: EvaluationTracker(SequenceChecker &Self) : Self(Self), Prev(Self.EvalTracker), EvalOK(true) { Self.EvalTracker = this; } ~EvaluationTracker() { Self.EvalTracker = Prev; if (Prev) Prev->EvalOK &= EvalOK; } bool evaluate(const Expr *E, bool &Result) { if (!EvalOK || E->isValueDependent()) return false; EvalOK = E->EvaluateAsBooleanCondition(Result, Self.SemaRef.Context); return EvalOK; } private: SequenceChecker &Self; EvaluationTracker *Prev; bool EvalOK; } *EvalTracker; /// \brief Find the object which is produced by the specified expression, /// if any. Object getObject(Expr *E, bool Mod) const { E = E->IgnoreParenCasts(); if (UnaryOperator *UO = dyn_cast(E)) { if (Mod && (UO->getOpcode() == UO_PreInc || UO->getOpcode() == UO_PreDec)) return getObject(UO->getSubExpr(), Mod); } else if (BinaryOperator *BO = dyn_cast(E)) { if (BO->getOpcode() == BO_Comma) return getObject(BO->getRHS(), Mod); if (Mod && BO->isAssignmentOp()) return getObject(BO->getLHS(), Mod); } else if (MemberExpr *ME = dyn_cast(E)) { // FIXME: Check for more interesting cases, like "x.n = ++x.n". if (isa(ME->getBase()->IgnoreParenCasts())) return ME->getMemberDecl(); } else if (DeclRefExpr *DRE = dyn_cast(E)) // FIXME: If this is a reference, map through to its value. return DRE->getDecl(); return 0; } /// \brief Note that an object was modified or used by an expression. void addUsage(UsageInfo &UI, Object O, Expr *Ref, UsageKind UK) { Usage &U = UI.Uses[UK]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) { if (UK == UK_ModAsSideEffect && ModAsSideEffect) ModAsSideEffect->push_back(std::make_pair(O, U)); U.Use = Ref; U.Seq = Region; } } /// \brief Check whether a modification or use conflicts with a prior usage. void checkUsage(Object O, UsageInfo &UI, Expr *Ref, UsageKind OtherKind, bool IsModMod) { if (UI.Diagnosed) return; const Usage &U = UI.Uses[OtherKind]; if (!U.Use || !Tree.isUnsequenced(Region, U.Seq)) return; Expr *Mod = U.Use; Expr *ModOrUse = Ref; if (OtherKind == UK_Use) std::swap(Mod, ModOrUse); SemaRef.Diag(Mod->getExprLoc(), IsModMod ? diag::warn_unsequenced_mod_mod : diag::warn_unsequenced_mod_use) << O << SourceRange(ModOrUse->getExprLoc()); UI.Diagnosed = true; } void notePreUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; // Uses conflict with other modifications. checkUsage(O, U, Use, UK_ModAsValue, false); } void notePostUse(Object O, Expr *Use) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, false); addUsage(U, O, Use, UK_Use); } void notePreMod(Object O, Expr *Mod) { UsageInfo &U = UsageMap[O]; // Modifications conflict with other modifications and with uses. checkUsage(O, U, Mod, UK_ModAsValue, true); checkUsage(O, U, Mod, UK_Use, false); } void notePostMod(Object O, Expr *Use, UsageKind UK) { UsageInfo &U = UsageMap[O]; checkUsage(O, U, Use, UK_ModAsSideEffect, true); addUsage(U, O, Use, UK); } public: SequenceChecker(Sema &S, Expr *E, SmallVectorImpl &WorkList) : Base(S.Context), SemaRef(S), Region(Tree.root()), ModAsSideEffect(0), WorkList(WorkList), EvalTracker(0) { Visit(E); } void VisitStmt(Stmt *S) { // Skip all statements which aren't expressions for now. } void VisitExpr(Expr *E) { // By default, just recurse to evaluated subexpressions. Base::VisitStmt(E); } void VisitCastExpr(CastExpr *E) { Object O = Object(); if (E->getCastKind() == CK_LValueToRValue) O = getObject(E->getSubExpr(), false); if (O) notePreUse(O, E); VisitExpr(E); if (O) notePostUse(O, E); } void VisitBinComma(BinaryOperator *BO) { // C++11 [expr.comma]p1: // Every value computation and side effect associated with the left // expression is sequenced before every value computation and side // effect associated with the right expression. SequenceTree::Seq LHS = Tree.allocate(Region); SequenceTree::Seq RHS = Tree.allocate(Region); SequenceTree::Seq OldRegion = Region; { SequencedSubexpression SeqLHS(*this); Region = LHS; Visit(BO->getLHS()); } Region = RHS; Visit(BO->getRHS()); Region = OldRegion; // Forget that LHS and RHS are sequenced. They are both unsequenced // with respect to other stuff. Tree.merge(LHS); Tree.merge(RHS); } void VisitBinAssign(BinaryOperator *BO) { // The modification is sequenced after the value computation of the LHS // and RHS, so check it before inspecting the operands and update the // map afterwards. Object O = getObject(BO->getLHS(), true); if (!O) return VisitExpr(BO); notePreMod(O, BO); // C++11 [expr.ass]p7: // E1 op= E2 is equivalent to E1 = E1 op E2, except that E1 is evaluated // only once. // // Therefore, for a compound assignment operator, O is considered used // everywhere except within the evaluation of E1 itself. if (isa(BO)) notePreUse(O, BO); Visit(BO->getLHS()); if (isa(BO)) notePostUse(O, BO); Visit(BO->getRHS()); // C++11 [expr.ass]p1: // the assignment is sequenced [...] before the value computation of the // assignment expression. // C11 6.5.16/3 has no such rule. notePostMod(O, BO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitCompoundAssignOperator(CompoundAssignOperator *CAO) { VisitBinAssign(CAO); } void VisitUnaryPreInc(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreDec(UnaryOperator *UO) { VisitUnaryPreIncDec(UO); } void VisitUnaryPreIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); // C++11 [expr.pre.incr]p1: // the expression ++x is equivalent to x+=1 notePostMod(O, UO, SemaRef.getLangOpts().CPlusPlus ? UK_ModAsValue : UK_ModAsSideEffect); } void VisitUnaryPostInc(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostDec(UnaryOperator *UO) { VisitUnaryPostIncDec(UO); } void VisitUnaryPostIncDec(UnaryOperator *UO) { Object O = getObject(UO->getSubExpr(), true); if (!O) return VisitExpr(UO); notePreMod(O, UO); Visit(UO->getSubExpr()); notePostMod(O, UO, UK_ModAsSideEffect); } /// Don't visit the RHS of '&&' or '||' if it might not be evaluated. void VisitBinLOr(BinaryOperator *BO) { // The side-effects of the LHS of an '&&' are sequenced before the // value computation of the RHS, and hence before the value computation // of the '&&' itself, unless the LHS evaluates to zero. We treat them // as if they were unconditionally sequenced. EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (!Result) Visit(BO->getRHS()); } else { // Check for unsequenced operations in the RHS, treating it as an // entirely separate evaluation. // // FIXME: If there are operations in the RHS which are unsequenced // with respect to operations outside the RHS, and those operations // are unconditionally evaluated, diagnose them. WorkList.push_back(BO->getRHS()); } } void VisitBinLAnd(BinaryOperator *BO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(BO->getLHS()); } bool Result; if (Eval.evaluate(BO->getLHS(), Result)) { if (Result) Visit(BO->getRHS()); } else { WorkList.push_back(BO->getRHS()); } } // Only visit the condition, unless we can be sure which subexpression will // be chosen. void VisitAbstractConditionalOperator(AbstractConditionalOperator *CO) { EvaluationTracker Eval(*this); { SequencedSubexpression Sequenced(*this); Visit(CO->getCond()); } bool Result; if (Eval.evaluate(CO->getCond(), Result)) Visit(Result ? CO->getTrueExpr() : CO->getFalseExpr()); else { WorkList.push_back(CO->getTrueExpr()); WorkList.push_back(CO->getFalseExpr()); } } void VisitCallExpr(CallExpr *CE) { // C++11 [intro.execution]p15: // When calling a function [...], every value computation and side effect // associated with any argument expression, or with the postfix expression // designating the called function, is sequenced before execution of every // expression or statement in the body of the function [and thus before // the value computation of its result]. SequencedSubexpression Sequenced(*this); Base::VisitCallExpr(CE); // FIXME: CXXNewExpr and CXXDeleteExpr implicitly call functions. } void VisitCXXConstructExpr(CXXConstructExpr *CCE) { // This is a call, so all subexpressions are sequenced before the result. SequencedSubexpression Sequenced(*this); if (!CCE->isListInitialization()) return VisitExpr(CCE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (CXXConstructExpr::arg_iterator I = CCE->arg_begin(), E = CCE->arg_end(); I != E; ++I) { Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(*I); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } void VisitInitListExpr(InitListExpr *ILE) { if (!SemaRef.getLangOpts().CPlusPlus11) return VisitExpr(ILE); // In C++11, list initializations are sequenced. SmallVector Elts; SequenceTree::Seq Parent = Region; for (unsigned I = 0; I < ILE->getNumInits(); ++I) { Expr *E = ILE->getInit(I); if (!E) continue; Region = Tree.allocate(Parent); Elts.push_back(Region); Visit(E); } // Forget that the initializers are sequenced. Region = Parent; for (unsigned I = 0; I < Elts.size(); ++I) Tree.merge(Elts[I]); } }; } void Sema::CheckUnsequencedOperations(Expr *E) { SmallVector WorkList; WorkList.push_back(E); while (!WorkList.empty()) { Expr *Item = WorkList.pop_back_val(); SequenceChecker(*this, Item, WorkList); } } void Sema::CheckCompletedExpr(Expr *E, SourceLocation CheckLoc, bool IsConstexpr) { CheckImplicitConversions(E, CheckLoc); CheckUnsequencedOperations(E); if (!IsConstexpr && !E->isValueDependent()) CheckForIntOverflow(E); } void Sema::CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *BitField, Expr *Init) { (void) AnalyzeBitFieldAssignment(*this, BitField, Init, InitLoc); } /// CheckParmsForFunctionDef - Check that the parameters of the given /// function are appropriate for the definition of a function. This /// takes care of any checks that cannot be performed on the /// declaration itself, e.g., that the types of each of the function /// parameters are complete. bool Sema::CheckParmsForFunctionDef(ParmVarDecl *const *P, ParmVarDecl *const *PEnd, bool CheckParameterNames) { bool HasInvalidParm = false; for (; P != PEnd; ++P) { ParmVarDecl *Param = *P; // C99 6.7.5.3p4: the parameters in a parameter type list in a // function declarator that is part of a function definition of // that function shall not have incomplete type. // // This is also C++ [dcl.fct]p6. if (!Param->isInvalidDecl() && RequireCompleteType(Param->getLocation(), Param->getType(), diag::err_typecheck_decl_incomplete_type)) { Param->setInvalidDecl(); HasInvalidParm = true; } // C99 6.9.1p5: If the declarator includes a parameter type list, the // declaration of each parameter shall include an identifier. if (CheckParameterNames && Param->getIdentifier() == 0 && !Param->isImplicit() && !getLangOpts().CPlusPlus) Diag(Param->getLocation(), diag::err_parameter_name_omitted); // C99 6.7.5.3p12: // If the function declarator is not part of a definition of that // function, parameters may have incomplete type and may use the [*] // notation in their sequences of declarator specifiers to specify // variable length array types. QualType PType = Param->getOriginalType(); while (const ArrayType *AT = Context.getAsArrayType(PType)) { if (AT->getSizeModifier() == ArrayType::Star) { // FIXME: This diagnostic should point the '[*]' if source-location // information is added for it. Diag(Param->getLocation(), diag::err_array_star_in_function_definition); break; } PType= AT->getElementType(); } // MSVC destroys objects passed by value in the callee. Therefore a // function definition which takes such a parameter must be able to call the // object's destructor. However, we don't perform any direct access check // on the dtor. if (getLangOpts().CPlusPlus && Context.getTargetInfo() .getCXXABI() .areArgsDestroyedLeftToRightInCallee()) { if (!Param->isInvalidDecl()) { if (const RecordType *RT = Param->getType()->getAs()) { CXXRecordDecl *ClassDecl = cast(RT->getDecl()); if (!ClassDecl->isInvalidDecl() && !ClassDecl->hasIrrelevantDestructor() && !ClassDecl->isDependentContext()) { CXXDestructorDecl *Destructor = LookupDestructor(ClassDecl); MarkFunctionReferenced(Param->getLocation(), Destructor); DiagnoseUseOfDecl(Destructor, Param->getLocation()); } } } } } return HasInvalidParm; } /// CheckCastAlign - Implements -Wcast-align, which warns when a /// pointer cast increases the alignment requirements. void Sema::CheckCastAlign(Expr *Op, QualType T, SourceRange TRange) { // This is actually a lot of work to potentially be doing on every // cast; don't do it if we're ignoring -Wcast_align (as is the default). if (getDiagnostics().getDiagnosticLevel(diag::warn_cast_align, TRange.getBegin()) == DiagnosticsEngine::Ignored) return; // Ignore dependent types. if (T->isDependentType() || Op->getType()->isDependentType()) return; // Require that the destination be a pointer type. const PointerType *DestPtr = T->getAs(); if (!DestPtr) return; // If the destination has alignment 1, we're done. QualType DestPointee = DestPtr->getPointeeType(); if (DestPointee->isIncompleteType()) return; CharUnits DestAlign = Context.getTypeAlignInChars(DestPointee); if (DestAlign.isOne()) return; // Require that the source be a pointer type. const PointerType *SrcPtr = Op->getType()->getAs(); if (!SrcPtr) return; QualType SrcPointee = SrcPtr->getPointeeType(); // Whitelist casts from cv void*. We already implicitly // whitelisted casts to cv void*, since they have alignment 1. // Also whitelist casts involving incomplete types, which implicitly // includes 'void'. if (SrcPointee->isIncompleteType()) return; CharUnits SrcAlign = Context.getTypeAlignInChars(SrcPointee); if (SrcAlign >= DestAlign) return; Diag(TRange.getBegin(), diag::warn_cast_align) << Op->getType() << T << static_cast(SrcAlign.getQuantity()) << static_cast(DestAlign.getQuantity()) << TRange << Op->getSourceRange(); } static const Type* getElementType(const Expr *BaseExpr) { const Type* EltType = BaseExpr->getType().getTypePtr(); if (EltType->isAnyPointerType()) return EltType->getPointeeType().getTypePtr(); else if (EltType->isArrayType()) return EltType->getBaseElementTypeUnsafe(); return EltType; } /// \brief Check whether this array fits the idiom of a size-one tail padded /// array member of a struct. /// /// We avoid emitting out-of-bounds access warnings for such arrays as they are /// commonly used to emulate flexible arrays in C89 code. static bool IsTailPaddedMemberArray(Sema &S, llvm::APInt Size, const NamedDecl *ND) { if (Size != 1 || !ND) return false; const FieldDecl *FD = dyn_cast(ND); if (!FD) return false; // Don't consider sizes resulting from macro expansions or template argument // substitution to form C89 tail-padded arrays. TypeSourceInfo *TInfo = FD->getTypeSourceInfo(); while (TInfo) { TypeLoc TL = TInfo->getTypeLoc(); // Look through typedefs. if (TypedefTypeLoc TTL = TL.getAs()) { const TypedefNameDecl *TDL = TTL.getTypedefNameDecl(); TInfo = TDL->getTypeSourceInfo(); continue; } if (ConstantArrayTypeLoc CTL = TL.getAs()) { const Expr *SizeExpr = dyn_cast(CTL.getSizeExpr()); if (!SizeExpr || SizeExpr->getExprLoc().isMacroID()) return false; } break; } const RecordDecl *RD = dyn_cast(FD->getDeclContext()); if (!RD) return false; if (RD->isUnion()) return false; if (const CXXRecordDecl *CRD = dyn_cast(RD)) { if (!CRD->isStandardLayout()) return false; } // See if this is the last field decl in the record. const Decl *D = FD; while ((D = D->getNextDeclInContext())) if (isa(D)) return false; return true; } void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, const ArraySubscriptExpr *ASE, bool AllowOnePastEnd, bool IndexNegated) { IndexExpr = IndexExpr->IgnoreParenImpCasts(); if (IndexExpr->isValueDependent()) return; const Type *EffectiveType = getElementType(BaseExpr); BaseExpr = BaseExpr->IgnoreParenCasts(); const ConstantArrayType *ArrayTy = Context.getAsConstantArrayType(BaseExpr->getType()); if (!ArrayTy) return; llvm::APSInt index; if (!IndexExpr->EvaluateAsInt(index, Context)) return; if (IndexNegated) index = -index; const NamedDecl *ND = NULL; if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); if (index.isUnsigned() || !index.isNegative()) { llvm::APInt size = ArrayTy->getSize(); if (!size.isStrictlyPositive()) return; const Type* BaseType = getElementType(BaseExpr); if (BaseType != EffectiveType) { // Make sure we're comparing apples to apples when comparing index to size uint64_t ptrarith_typesize = Context.getTypeSize(EffectiveType); uint64_t array_typesize = Context.getTypeSize(BaseType); // Handle ptrarith_typesize being zero, such as when casting to void* if (!ptrarith_typesize) ptrarith_typesize = 1; if (ptrarith_typesize != array_typesize) { // There's a cast to a different size type involved uint64_t ratio = array_typesize / ptrarith_typesize; // TODO: Be smarter about handling cases where array_typesize is not a // multiple of ptrarith_typesize if (ptrarith_typesize * ratio == array_typesize) size *= llvm::APInt(size.getBitWidth(), ratio); } } if (size.getBitWidth() > index.getBitWidth()) index = index.zext(size.getBitWidth()); else if (size.getBitWidth() < index.getBitWidth()) size = size.zext(index.getBitWidth()); // For array subscripting the index must be less than size, but for pointer // arithmetic also allow the index (offset) to be equal to size since // computing the next address after the end of the array is legal and // commonly done e.g. in C++ iterators and range-based for loops. if (AllowOnePastEnd ? index.ule(size) : index.ult(size)) return; // Also don't warn for arrays of size 1 which are members of some // structure. These are often used to approximate flexible arrays in C89 // code. if (IsTailPaddedMemberArray(*this, size, ND)) return; // Suppress the warning if the subscript expression (as identified by the // ']' location) and the index expression are both from macro expansions // within a system header. if (ASE) { SourceLocation RBracketLoc = SourceMgr.getSpellingLoc( ASE->getRBracketLoc()); if (SourceMgr.isInSystemHeader(RBracketLoc)) { SourceLocation IndexLoc = SourceMgr.getSpellingLoc( IndexExpr->getLocStart()); if (SourceMgr.isWrittenInSameFile(RBracketLoc, IndexLoc)) return; } } unsigned DiagID = diag::warn_ptr_arith_exceeds_bounds; if (ASE) DiagID = diag::warn_array_index_exceeds_bounds; DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << size.toString(10, true) << (unsigned)size.getLimitedValue(~0U) << IndexExpr->getSourceRange()); } else { unsigned DiagID = diag::warn_array_index_precedes_bounds; if (!ASE) { DiagID = diag::warn_ptr_arith_precedes_bounds; if (index.isNegative()) index = -index; } DiagRuntimeBehavior(BaseExpr->getLocStart(), BaseExpr, PDiag(DiagID) << index.toString(10, true) << IndexExpr->getSourceRange()); } if (!ND) { // Try harder to find a NamedDecl to point at in the note. while (const ArraySubscriptExpr *ASE = dyn_cast(BaseExpr)) BaseExpr = ASE->getBase()->IgnoreParenCasts(); if (const DeclRefExpr *DRE = dyn_cast(BaseExpr)) ND = dyn_cast(DRE->getDecl()); if (const MemberExpr *ME = dyn_cast(BaseExpr)) ND = dyn_cast(ME->getMemberDecl()); } if (ND) DiagRuntimeBehavior(ND->getLocStart(), BaseExpr, PDiag(diag::note_array_index_out_of_bounds) << ND->getDeclName()); } void Sema::CheckArrayAccess(const Expr *expr) { int AllowOnePastEnd = 0; while (expr) { expr = expr->IgnoreParenImpCasts(); switch (expr->getStmtClass()) { case Stmt::ArraySubscriptExprClass: { const ArraySubscriptExpr *ASE = cast(expr); CheckArrayAccess(ASE->getBase(), ASE->getIdx(), ASE, AllowOnePastEnd > 0); return; } case Stmt::UnaryOperatorClass: { // Only unwrap the * and & unary operators const UnaryOperator *UO = cast(expr); expr = UO->getSubExpr(); switch (UO->getOpcode()) { case UO_AddrOf: AllowOnePastEnd++; break; case UO_Deref: AllowOnePastEnd--; break; default: return; } break; } case Stmt::ConditionalOperatorClass: { const ConditionalOperator *cond = cast(expr); if (const Expr *lhs = cond->getLHS()) CheckArrayAccess(lhs); if (const Expr *rhs = cond->getRHS()) CheckArrayAccess(rhs); return; } default: return; } } } //===--- CHECK: Objective-C retain cycles ----------------------------------// namespace { struct RetainCycleOwner { RetainCycleOwner() : Variable(0), Indirect(false) {} VarDecl *Variable; SourceRange Range; SourceLocation Loc; bool Indirect; void setLocsFrom(Expr *e) { Loc = e->getExprLoc(); Range = e->getSourceRange(); } }; } /// Consider whether capturing the given variable can possibly lead to /// a retain cycle. static bool considerVariable(VarDecl *var, Expr *ref, RetainCycleOwner &owner) { // In ARC, it's captured strongly iff the variable has __strong // lifetime. In MRR, it's captured strongly if the variable is // __block and has an appropriate type. if (var->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; owner.Variable = var; if (ref) owner.setLocsFrom(ref); return true; } static bool findRetainCycleOwner(Sema &S, Expr *e, RetainCycleOwner &owner) { while (true) { e = e->IgnoreParens(); if (CastExpr *cast = dyn_cast(e)) { switch (cast->getCastKind()) { case CK_BitCast: case CK_LValueBitCast: case CK_LValueToRValue: case CK_ARCReclaimReturnedObject: e = cast->getSubExpr(); continue; default: return false; } } if (ObjCIvarRefExpr *ref = dyn_cast(e)) { ObjCIvarDecl *ivar = ref->getDecl(); if (ivar->getType().getObjCLifetime() != Qualifiers::OCL_Strong) return false; // Try to find a retain cycle in the base. if (!findRetainCycleOwner(S, ref->getBase(), owner)) return false; if (ref->isFreeIvar()) owner.setLocsFrom(ref); owner.Indirect = true; return true; } if (DeclRefExpr *ref = dyn_cast(e)) { VarDecl *var = dyn_cast(ref->getDecl()); if (!var) return false; return considerVariable(var, ref, owner); } if (MemberExpr *member = dyn_cast(e)) { if (member->isArrow()) return false; // Don't count this as an indirect ownership. e = member->getBase(); continue; } if (PseudoObjectExpr *pseudo = dyn_cast(e)) { // Only pay attention to pseudo-objects on property references. ObjCPropertyRefExpr *pre = dyn_cast(pseudo->getSyntacticForm() ->IgnoreParens()); if (!pre) return false; if (pre->isImplicitProperty()) return false; ObjCPropertyDecl *property = pre->getExplicitProperty(); if (!property->isRetaining() && !(property->getPropertyIvarDecl() && property->getPropertyIvarDecl()->getType() .getObjCLifetime() == Qualifiers::OCL_Strong)) return false; owner.Indirect = true; if (pre->isSuperReceiver()) { owner.Variable = S.getCurMethodDecl()->getSelfDecl(); if (!owner.Variable) return false; owner.Loc = pre->getLocation(); owner.Range = pre->getSourceRange(); return true; } e = const_cast(cast(pre->getBase()) ->getSourceExpr()); continue; } // Array ivars? return false; } } namespace { struct FindCaptureVisitor : EvaluatedExprVisitor { FindCaptureVisitor(ASTContext &Context, VarDecl *variable) : EvaluatedExprVisitor(Context), Variable(variable), Capturer(0) {} VarDecl *Variable; Expr *Capturer; void VisitDeclRefExpr(DeclRefExpr *ref) { if (ref->getDecl() == Variable && !Capturer) Capturer = ref; } void VisitObjCIvarRefExpr(ObjCIvarRefExpr *ref) { if (Capturer) return; Visit(ref->getBase()); if (Capturer && ref->isFreeIvar()) Capturer = ref; } void VisitBlockExpr(BlockExpr *block) { // Look inside nested blocks if (block->getBlockDecl()->capturesVariable(Variable)) Visit(block->getBlockDecl()->getBody()); } void VisitOpaqueValueExpr(OpaqueValueExpr *OVE) { if (Capturer) return; if (OVE->getSourceExpr()) Visit(OVE->getSourceExpr()); } }; } /// Check whether the given argument is a block which captures a /// variable. static Expr *findCapturingExpr(Sema &S, Expr *e, RetainCycleOwner &owner) { assert(owner.Variable && owner.Loc.isValid()); e = e->IgnoreParenCasts(); // Look through [^{...} copy] and Block_copy(^{...}). if (ObjCMessageExpr *ME = dyn_cast(e)) { Selector Cmd = ME->getSelector(); if (Cmd.isUnarySelector() && Cmd.getNameForSlot(0) == "copy") { e = ME->getInstanceReceiver(); if (!e) return 0; e = e->IgnoreParenCasts(); } } else if (CallExpr *CE = dyn_cast(e)) { if (CE->getNumArgs() == 1) { FunctionDecl *Fn = dyn_cast_or_null(CE->getCalleeDecl()); if (Fn) { const IdentifierInfo *FnI = Fn->getIdentifier(); if (FnI && FnI->isStr("_Block_copy")) { e = CE->getArg(0)->IgnoreParenCasts(); } } } } BlockExpr *block = dyn_cast(e); if (!block || !block->getBlockDecl()->capturesVariable(owner.Variable)) return 0; FindCaptureVisitor visitor(S.Context, owner.Variable); visitor.Visit(block->getBlockDecl()->getBody()); return visitor.Capturer; } static void diagnoseRetainCycle(Sema &S, Expr *capturer, RetainCycleOwner &owner) { assert(capturer); assert(owner.Variable && owner.Loc.isValid()); S.Diag(capturer->getExprLoc(), diag::warn_arc_retain_cycle) << owner.Variable << capturer->getSourceRange(); S.Diag(owner.Loc, diag::note_arc_retain_cycle_owner) << owner.Indirect << owner.Range; } /// Check for a keyword selector that starts with the word 'add' or /// 'set'. static bool isSetterLikeSelector(Selector sel) { if (sel.isUnarySelector()) return false; StringRef str = sel.getNameForSlot(0); while (!str.empty() && str.front() == '_') str = str.substr(1); if (str.startswith("set")) str = str.substr(3); else if (str.startswith("add")) { // Specially whitelist 'addOperationWithBlock:'. if (sel.getNumArgs() == 1 && str.startswith("addOperationWithBlock")) return false; str = str.substr(3); } else return false; if (str.empty()) return true; return !isLowercase(str.front()); } /// Check a message send to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(ObjCMessageExpr *msg) { // Only check instance methods whose selector looks like a setter. if (!msg->isInstanceMessage() || !isSetterLikeSelector(msg->getSelector())) return; // Try to find a variable that the receiver is strongly owned by. RetainCycleOwner owner; if (msg->getReceiverKind() == ObjCMessageExpr::Instance) { if (!findRetainCycleOwner(*this, msg->getInstanceReceiver(), owner)) return; } else { assert(msg->getReceiverKind() == ObjCMessageExpr::SuperInstance); owner.Variable = getCurMethodDecl()->getSelfDecl(); owner.Loc = msg->getSuperLoc(); owner.Range = msg->getSuperLoc(); } // Check whether the receiver is captured by any of the arguments. for (unsigned i = 0, e = msg->getNumArgs(); i != e; ++i) if (Expr *capturer = findCapturingExpr(*this, msg->getArg(i), owner)) return diagnoseRetainCycle(*this, capturer, owner); } /// Check a property assign to see if it's likely to cause a retain cycle. void Sema::checkRetainCycles(Expr *receiver, Expr *argument) { RetainCycleOwner owner; if (!findRetainCycleOwner(*this, receiver, owner)) return; if (Expr *capturer = findCapturingExpr(*this, argument, owner)) diagnoseRetainCycle(*this, capturer, owner); } void Sema::checkRetainCycles(VarDecl *Var, Expr *Init) { RetainCycleOwner Owner; if (!considerVariable(Var, /*DeclRefExpr=*/0, Owner)) return; // Because we don't have an expression for the variable, we have to set the // location explicitly here. Owner.Loc = Var->getLocation(); Owner.Range = Var->getSourceRange(); if (Expr *Capturer = findCapturingExpr(*this, Init, Owner)) diagnoseRetainCycle(*this, Capturer, Owner); } static bool checkUnsafeAssignLiteral(Sema &S, SourceLocation Loc, Expr *RHS, bool isProperty) { // Check if RHS is an Objective-C object literal, which also can get // immediately zapped in a weak reference. Note that we explicitly // allow ObjCStringLiterals, since those are designed to never really die. RHS = RHS->IgnoreParenImpCasts(); // This enum needs to match with the 'select' in // warn_objc_arc_literal_assign (off-by-1). Sema::ObjCLiteralKind Kind = S.CheckLiteralKind(RHS); if (Kind == Sema::LK_String || Kind == Sema::LK_None) return false; S.Diag(Loc, diag::warn_arc_literal_assign) << (unsigned) Kind << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } static bool checkUnsafeAssignObject(Sema &S, SourceLocation Loc, Qualifiers::ObjCLifetime LT, Expr *RHS, bool isProperty) { // Strip off any implicit cast added to get to the one ARC-specific. while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { S.Diag(Loc, diag::warn_arc_retained_assign) << (LT == Qualifiers::OCL_ExplicitNone) << (isProperty ? 0 : 1) << RHS->getSourceRange(); return true; } RHS = cast->getSubExpr(); } if (LT == Qualifiers::OCL_Weak && checkUnsafeAssignLiteral(S, Loc, RHS, isProperty)) return true; return false; } bool Sema::checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS) { Qualifiers::ObjCLifetime LT = LHS.getObjCLifetime(); if (LT != Qualifiers::OCL_Weak && LT != Qualifiers::OCL_ExplicitNone) return false; if (checkUnsafeAssignObject(*this, Loc, LT, RHS, false)) return true; return false; } void Sema::checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS) { QualType LHSType; // PropertyRef on LHS type need be directly obtained from // its declaration as it has a PseudoType. ObjCPropertyRefExpr *PRE = dyn_cast(LHS->IgnoreParens()); if (PRE && !PRE->isImplicitProperty()) { const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (PD) LHSType = PD->getType(); } if (LHSType.isNull()) LHSType = LHS->getType(); Qualifiers::ObjCLifetime LT = LHSType.getObjCLifetime(); if (LT == Qualifiers::OCL_Weak) { DiagnosticsEngine::Level Level = Diags.getDiagnosticLevel(diag::warn_arc_repeated_use_of_weak, Loc); if (Level != DiagnosticsEngine::Ignored) getCurFunction()->markSafeWeakUse(LHS); } if (checkUnsafeAssigns(Loc, LHSType, RHS)) return; // FIXME. Check for other life times. if (LT != Qualifiers::OCL_None) return; if (PRE) { if (PRE->isImplicitProperty()) return; const ObjCPropertyDecl *PD = PRE->getExplicitProperty(); if (!PD) return; unsigned Attributes = PD->getPropertyAttributes(); if (Attributes & ObjCPropertyDecl::OBJC_PR_assign) { // when 'assign' attribute was not explicitly specified // by user, ignore it and rely on property type itself // for lifetime info. unsigned AsWrittenAttr = PD->getPropertyAttributesAsWritten(); if (!(AsWrittenAttr & ObjCPropertyDecl::OBJC_PR_assign) && LHSType->isObjCRetainableType()) return; while (ImplicitCastExpr *cast = dyn_cast(RHS)) { if (cast->getCastKind() == CK_ARCConsumeObject) { Diag(Loc, diag::warn_arc_retained_property_assign) << RHS->getSourceRange(); return; } RHS = cast->getSubExpr(); } } else if (Attributes & ObjCPropertyDecl::OBJC_PR_weak) { if (checkUnsafeAssignObject(*this, Loc, Qualifiers::OCL_Weak, RHS, true)) return; } } } //===--- CHECK: Empty statement body (-Wempty-body) ---------------------===// namespace { bool ShouldDiagnoseEmptyStmtBody(const SourceManager &SourceMgr, SourceLocation StmtLoc, const NullStmt *Body) { // Do not warn if the body is a macro that expands to nothing, e.g: // // #define CALL(x) // if (condition) // CALL(0); // if (Body->hasLeadingEmptyMacro()) return false; // Get line numbers of statement and body. bool StmtLineInvalid; unsigned StmtLine = SourceMgr.getSpellingLineNumber(StmtLoc, &StmtLineInvalid); if (StmtLineInvalid) return false; bool BodyLineInvalid; unsigned BodyLine = SourceMgr.getSpellingLineNumber(Body->getSemiLoc(), &BodyLineInvalid); if (BodyLineInvalid) return false; // Warn if null statement and body are on the same line. if (StmtLine != BodyLine) return false; return true; } } // Unnamed namespace void Sema::DiagnoseEmptyStmtBody(SourceLocation StmtLoc, const Stmt *Body, unsigned DiagID) { // Since this is a syntactic check, don't emit diagnostic for template // instantiations, this just adds noise. if (CurrentInstantiationScope) return; // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } void Sema::DiagnoseEmptyLoopBody(const Stmt *S, const Stmt *PossibleBody) { assert(!CurrentInstantiationScope); // Ensured by caller SourceLocation StmtLoc; const Stmt *Body; unsigned DiagID; if (const ForStmt *FS = dyn_cast(S)) { StmtLoc = FS->getRParenLoc(); Body = FS->getBody(); DiagID = diag::warn_empty_for_body; } else if (const WhileStmt *WS = dyn_cast(S)) { StmtLoc = WS->getCond()->getSourceRange().getEnd(); Body = WS->getBody(); DiagID = diag::warn_empty_while_body; } else return; // Neither `for' nor `while'. // The body should be a null statement. const NullStmt *NBody = dyn_cast(Body); if (!NBody) return; // Skip expensive checks if diagnostic is disabled. if (Diags.getDiagnosticLevel(DiagID, NBody->getSemiLoc()) == DiagnosticsEngine::Ignored) return; // Do the usual checks. if (!ShouldDiagnoseEmptyStmtBody(SourceMgr, StmtLoc, NBody)) return; // `for(...);' and `while(...);' are popular idioms, so in order to keep // noise level low, emit diagnostics only if for/while is followed by a // CompoundStmt, e.g.: // for (int i = 0; i < n; i++); // { // a(i); // } // or if for/while is followed by a statement with more indentation // than for/while itself: // for (int i = 0; i < n; i++); // a(i); bool ProbableTypo = isa(PossibleBody); if (!ProbableTypo) { bool BodyColInvalid; unsigned BodyCol = SourceMgr.getPresumedColumnNumber( PossibleBody->getLocStart(), &BodyColInvalid); if (BodyColInvalid) return; bool StmtColInvalid; unsigned StmtCol = SourceMgr.getPresumedColumnNumber( S->getLocStart(), &StmtColInvalid); if (StmtColInvalid) return; if (BodyCol > StmtCol) ProbableTypo = true; } if (ProbableTypo) { Diag(NBody->getSemiLoc(), DiagID); Diag(NBody->getSemiLoc(), diag::note_empty_body_on_separate_line); } } //===--- Layout compatibility ----------------------------------------------// namespace { bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2); /// \brief Check if two enumeration types are layout-compatible. bool isLayoutCompatible(ASTContext &C, EnumDecl *ED1, EnumDecl *ED2) { // C++11 [dcl.enum] p8: // Two enumeration types are layout-compatible if they have the same // underlying type. return ED1->isComplete() && ED2->isComplete() && C.hasSameType(ED1->getIntegerType(), ED2->getIntegerType()); } /// \brief Check if two fields are layout-compatible. bool isLayoutCompatible(ASTContext &C, FieldDecl *Field1, FieldDecl *Field2) { if (!isLayoutCompatible(C, Field1->getType(), Field2->getType())) return false; if (Field1->isBitField() != Field2->isBitField()) return false; if (Field1->isBitField()) { // Make sure that the bit-fields are the same length. unsigned Bits1 = Field1->getBitWidthValue(C); unsigned Bits2 = Field2->getBitWidthValue(C); if (Bits1 != Bits2) return false; } return true; } /// \brief Check if two standard-layout structs are layout-compatible. /// (C++11 [class.mem] p17) bool isLayoutCompatibleStruct(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { // If both records are C++ classes, check that base classes match. if (const CXXRecordDecl *D1CXX = dyn_cast(RD1)) { // If one of records is a CXXRecordDecl we are in C++ mode, // thus the other one is a CXXRecordDecl, too. const CXXRecordDecl *D2CXX = cast(RD2); // Check number of base classes. if (D1CXX->getNumBases() != D2CXX->getNumBases()) return false; // Check the base classes. for (CXXRecordDecl::base_class_const_iterator Base1 = D1CXX->bases_begin(), BaseEnd1 = D1CXX->bases_end(), Base2 = D2CXX->bases_begin(); Base1 != BaseEnd1; ++Base1, ++Base2) { if (!isLayoutCompatible(C, Base1->getType(), Base2->getType())) return false; } } else if (const CXXRecordDecl *D2CXX = dyn_cast(RD2)) { // If only RD2 is a C++ class, it should have zero base classes. if (D2CXX->getNumBases() > 0) return false; } // Check the fields. RecordDecl::field_iterator Field2 = RD2->field_begin(), Field2End = RD2->field_end(), Field1 = RD1->field_begin(), Field1End = RD1->field_end(); for ( ; Field1 != Field1End && Field2 != Field2End; ++Field1, ++Field2) { if (!isLayoutCompatible(C, *Field1, *Field2)) return false; } if (Field1 != Field1End || Field2 != Field2End) return false; return true; } /// \brief Check if two standard-layout unions are layout-compatible. /// (C++11 [class.mem] p18) bool isLayoutCompatibleUnion(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { llvm::SmallPtrSet UnmatchedFields; for (RecordDecl::field_iterator Field2 = RD2->field_begin(), Field2End = RD2->field_end(); Field2 != Field2End; ++Field2) { UnmatchedFields.insert(*Field2); } for (RecordDecl::field_iterator Field1 = RD1->field_begin(), Field1End = RD1->field_end(); Field1 != Field1End; ++Field1) { llvm::SmallPtrSet::iterator I = UnmatchedFields.begin(), E = UnmatchedFields.end(); for ( ; I != E; ++I) { if (isLayoutCompatible(C, *Field1, *I)) { bool Result = UnmatchedFields.erase(*I); (void) Result; assert(Result); break; } } if (I == E) return false; } return UnmatchedFields.empty(); } bool isLayoutCompatible(ASTContext &C, RecordDecl *RD1, RecordDecl *RD2) { if (RD1->isUnion() != RD2->isUnion()) return false; if (RD1->isUnion()) return isLayoutCompatibleUnion(C, RD1, RD2); else return isLayoutCompatibleStruct(C, RD1, RD2); } /// \brief Check if two types are layout-compatible in C++11 sense. bool isLayoutCompatible(ASTContext &C, QualType T1, QualType T2) { if (T1.isNull() || T2.isNull()) return false; // C++11 [basic.types] p11: // If two types T1 and T2 are the same type, then T1 and T2 are // layout-compatible types. if (C.hasSameType(T1, T2)) return true; T1 = T1.getCanonicalType().getUnqualifiedType(); T2 = T2.getCanonicalType().getUnqualifiedType(); const Type::TypeClass TC1 = T1->getTypeClass(); const Type::TypeClass TC2 = T2->getTypeClass(); if (TC1 != TC2) return false; if (TC1 == Type::Enum) { return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } else if (TC1 == Type::Record) { if (!T1->isStandardLayoutType() || !T2->isStandardLayoutType()) return false; return isLayoutCompatible(C, cast(T1)->getDecl(), cast(T2)->getDecl()); } return false; } } //===--- CHECK: pointer_with_type_tag attribute: datatypes should match ----// namespace { /// \brief Given a type tag expression find the type tag itself. /// /// \param TypeExpr Type tag expression, as it appears in user's code. /// /// \param VD Declaration of an identifier that appears in a type tag. /// /// \param MagicValue Type tag magic value. bool FindTypeTagExpr(const Expr *TypeExpr, const ASTContext &Ctx, const ValueDecl **VD, uint64_t *MagicValue) { while(true) { if (!TypeExpr) return false; TypeExpr = TypeExpr->IgnoreParenImpCasts()->IgnoreParenCasts(); switch (TypeExpr->getStmtClass()) { case Stmt::UnaryOperatorClass: { const UnaryOperator *UO = cast(TypeExpr); if (UO->getOpcode() == UO_AddrOf || UO->getOpcode() == UO_Deref) { TypeExpr = UO->getSubExpr(); continue; } return false; } case Stmt::DeclRefExprClass: { const DeclRefExpr *DRE = cast(TypeExpr); *VD = DRE->getDecl(); return true; } case Stmt::IntegerLiteralClass: { const IntegerLiteral *IL = cast(TypeExpr); llvm::APInt MagicValueAPInt = IL->getValue(); if (MagicValueAPInt.getActiveBits() <= 64) { *MagicValue = MagicValueAPInt.getZExtValue(); return true; } else return false; } case Stmt::BinaryConditionalOperatorClass: case Stmt::ConditionalOperatorClass: { const AbstractConditionalOperator *ACO = cast(TypeExpr); bool Result; if (ACO->getCond()->EvaluateAsBooleanCondition(Result, Ctx)) { if (Result) TypeExpr = ACO->getTrueExpr(); else TypeExpr = ACO->getFalseExpr(); continue; } return false; } case Stmt::BinaryOperatorClass: { const BinaryOperator *BO = cast(TypeExpr); if (BO->getOpcode() == BO_Comma) { TypeExpr = BO->getRHS(); continue; } return false; } default: return false; } } } /// \brief Retrieve the C type corresponding to type tag TypeExpr. /// /// \param TypeExpr Expression that specifies a type tag. /// /// \param MagicValues Registered magic values. /// /// \param FoundWrongKind Set to true if a type tag was found, but of a wrong /// kind. /// /// \param TypeInfo Information about the corresponding C type. /// /// \returns true if the corresponding C type was found. bool GetMatchingCType( const IdentifierInfo *ArgumentKind, const Expr *TypeExpr, const ASTContext &Ctx, const llvm::DenseMap *MagicValues, bool &FoundWrongKind, Sema::TypeTagData &TypeInfo) { FoundWrongKind = false; // Variable declaration that has type_tag_for_datatype attribute. const ValueDecl *VD = NULL; uint64_t MagicValue; if (!FindTypeTagExpr(TypeExpr, Ctx, &VD, &MagicValue)) return false; if (VD) { if (TypeTagForDatatypeAttr *I = VD->getAttr()) { if (I->getArgumentKind() != ArgumentKind) { FoundWrongKind = true; return false; } TypeInfo.Type = I->getMatchingCType(); TypeInfo.LayoutCompatible = I->getLayoutCompatible(); TypeInfo.MustBeNull = I->getMustBeNull(); return true; } return false; } if (!MagicValues) return false; llvm::DenseMap::const_iterator I = MagicValues->find(std::make_pair(ArgumentKind, MagicValue)); if (I == MagicValues->end()) return false; TypeInfo = I->second; return true; } } // unnamed namespace void Sema::RegisterTypeTagForDatatype(const IdentifierInfo *ArgumentKind, uint64_t MagicValue, QualType Type, bool LayoutCompatible, bool MustBeNull) { if (!TypeTagForDatatypeMagicValues) TypeTagForDatatypeMagicValues.reset( new llvm::DenseMap); TypeTagMagicValue Magic(ArgumentKind, MagicValue); (*TypeTagForDatatypeMagicValues)[Magic] = TypeTagData(Type, LayoutCompatible, MustBeNull); } namespace { bool IsSameCharType(QualType T1, QualType T2) { const BuiltinType *BT1 = T1->getAs(); if (!BT1) return false; const BuiltinType *BT2 = T2->getAs(); if (!BT2) return false; BuiltinType::Kind T1Kind = BT1->getKind(); BuiltinType::Kind T2Kind = BT2->getKind(); return (T1Kind == BuiltinType::SChar && T2Kind == BuiltinType::Char_S) || (T1Kind == BuiltinType::UChar && T2Kind == BuiltinType::Char_U) || (T1Kind == BuiltinType::Char_U && T2Kind == BuiltinType::UChar) || (T1Kind == BuiltinType::Char_S && T2Kind == BuiltinType::SChar); } } // unnamed namespace void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr, const Expr * const *ExprArgs) { const IdentifierInfo *ArgumentKind = Attr->getArgumentKind(); bool IsPointerAttr = Attr->getIsPointer(); const Expr *TypeTagExpr = ExprArgs[Attr->getTypeTagIdx()]; bool FoundWrongKind; TypeTagData TypeInfo; if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context, TypeTagForDatatypeMagicValues.get(), FoundWrongKind, TypeInfo)) { if (FoundWrongKind) Diag(TypeTagExpr->getExprLoc(), diag::warn_type_tag_for_datatype_wrong_kind) << TypeTagExpr->getSourceRange(); return; } const Expr *ArgumentExpr = ExprArgs[Attr->getArgumentIdx()]; if (IsPointerAttr) { // Skip implicit cast of pointer to `void *' (as a function argument). if (const ImplicitCastExpr *ICE = dyn_cast(ArgumentExpr)) if (ICE->getType()->isVoidPointerType() && ICE->getCastKind() == CK_BitCast) ArgumentExpr = ICE->getSubExpr(); } QualType ArgumentType = ArgumentExpr->getType(); // Passing a `void*' pointer shouldn't trigger a warning. if (IsPointerAttr && ArgumentType->isVoidPointerType()) return; if (TypeInfo.MustBeNull) { // Type tag with matching void type requires a null pointer. if (!ArgumentExpr->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull)) { Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_null_pointer_required) << ArgumentKind->getName() << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } return; } QualType RequiredType = TypeInfo.Type; if (IsPointerAttr) RequiredType = Context.getPointerType(RequiredType); bool mismatch = false; if (!TypeInfo.LayoutCompatible) { mismatch = !Context.hasSameType(ArgumentType, RequiredType); // C++11 [basic.fundamental] p1: // Plain char, signed char, and unsigned char are three distinct types. // // But we treat plain `char' as equivalent to `signed char' or `unsigned // char' depending on the current char signedness mode. if (mismatch) if ((IsPointerAttr && IsSameCharType(ArgumentType->getPointeeType(), RequiredType->getPointeeType())) || (!IsPointerAttr && IsSameCharType(ArgumentType, RequiredType))) mismatch = false; } else if (IsPointerAttr) mismatch = !isLayoutCompatible(Context, ArgumentType->getPointeeType(), RequiredType->getPointeeType()); else mismatch = !isLayoutCompatible(Context, ArgumentType, RequiredType); if (mismatch) Diag(ArgumentExpr->getExprLoc(), diag::warn_type_safety_type_mismatch) << ArgumentType << ArgumentKind << TypeInfo.LayoutCompatible << RequiredType << ArgumentExpr->getSourceRange() << TypeTagExpr->getSourceRange(); } @