head 1.1; branch 1.1.1; access; symbols netbsd-10-2-RELEASE:1.1.1.7 netbsd-9-5-RELEASE:1.1.1.6 netbsd-11-0-RELEASE:1.1.1.7 netbsd-11-0-RC7:1.1.1.7 netbsd-11-0-RC6:1.1.1.7 netbsd-11-0-RC5:1.1.1.7 netbsd-11-0-RC4:1.1.1.7 netbsd-11-0-RC3:1.1.1.7 netbsd-11-0-RC2:1.1.1.7 netbsd-11-0-RC1:1.1.1.7 perseant-exfatfs-base-20250801:1.1.1.7 netbsd-11:1.1.1.7.0.10 netbsd-11-base:1.1.1.7 netbsd-10-1-RELEASE:1.1.1.7 perseant-exfatfs-base-20240630:1.1.1.7 perseant-exfatfs:1.1.1.7.0.8 perseant-exfatfs-base:1.1.1.7 netbsd-8-3-RELEASE:1.1.1.5 netbsd-9-4-RELEASE:1.1.1.6 netbsd-10-0-RELEASE:1.1.1.7 netbsd-10-0-RC6:1.1.1.7 netbsd-10-0-RC5:1.1.1.7 netbsd-10-0-RC4:1.1.1.7 netbsd-10-0-RC3:1.1.1.7 netbsd-10-0-RC2:1.1.1.7 netbsd-10-0-RC1:1.1.1.7 netbsd-10:1.1.1.7.0.6 netbsd-10-base:1.1.1.7 netbsd-9-3-RELEASE:1.1.1.6 cjep_sun2x:1.1.1.7.0.4 cjep_sun2x-base:1.1.1.7 cjep_staticlib_x-base1:1.1.1.7 netbsd-9-2-RELEASE:1.1.1.6 cjep_staticlib_x:1.1.1.7.0.2 cjep_staticlib_x-base:1.1.1.7 netbsd-9-1-RELEASE:1.1.1.6 phil-wifi-20200421:1.1.1.7 phil-wifi-20200411:1.1.1.7 phil-wifi-20200406:1.1.1.7 netbsd-8-2-RELEASE:1.1.1.5 netbsd-9-0-RELEASE:1.1.1.6 netbsd-9-0-RC2:1.1.1.6 netbsd-9-0-RC1:1.1.1.6 netbsd-9:1.1.1.6.0.2 netbsd-9-base:1.1.1.6 phil-wifi-20190609:1.1.1.6 netbsd-8-1-RELEASE:1.1.1.5 netbsd-8-1-RC1:1.1.1.5 pgoyette-compat-merge-20190127:1.1.1.5.12.1 pgoyette-compat-20190127:1.1.1.6 pgoyette-compat-20190118:1.1.1.6 pgoyette-compat-1226:1.1.1.6 pgoyette-compat-1126:1.1.1.6 pgoyette-compat-1020:1.1.1.6 pgoyette-compat-0930:1.1.1.6 pgoyette-compat-0906:1.1.1.6 netbsd-7-2-RELEASE:1.1.1.3 pgoyette-compat-0728:1.1.1.6 clang-337282:1.1.1.6 netbsd-8-0-RELEASE:1.1.1.5 phil-wifi:1.1.1.5.0.14 phil-wifi-base:1.1.1.5 pgoyette-compat-0625:1.1.1.5 netbsd-8-0-RC2:1.1.1.5 pgoyette-compat-0521:1.1.1.5 pgoyette-compat-0502:1.1.1.5 pgoyette-compat-0422:1.1.1.5 netbsd-8-0-RC1:1.1.1.5 pgoyette-compat-0415:1.1.1.5 pgoyette-compat-0407:1.1.1.5 pgoyette-compat-0330:1.1.1.5 pgoyette-compat-0322:1.1.1.5 pgoyette-compat-0315:1.1.1.5 netbsd-7-1-2-RELEASE:1.1.1.3 pgoyette-compat:1.1.1.5.0.12 pgoyette-compat-base:1.1.1.5 netbsd-7-1-1-RELEASE:1.1.1.3 clang-319952:1.1.1.5 matt-nb8-mediatek:1.1.1.5.0.10 matt-nb8-mediatek-base:1.1.1.5 clang-309604:1.1.1.5 perseant-stdc-iso10646:1.1.1.5.0.8 perseant-stdc-iso10646-base:1.1.1.5 netbsd-8:1.1.1.5.0.6 netbsd-8-base:1.1.1.5 prg-localcount2-base3:1.1.1.5 prg-localcount2-base2:1.1.1.5 prg-localcount2-base1:1.1.1.5 prg-localcount2:1.1.1.5.0.4 prg-localcount2-base:1.1.1.5 pgoyette-localcount-20170426:1.1.1.5 bouyer-socketcan-base1:1.1.1.5 pgoyette-localcount-20170320:1.1.1.5 netbsd-7-1:1.1.1.3.0.14 netbsd-7-1-RELEASE:1.1.1.3 netbsd-7-1-RC2:1.1.1.3 clang-294123:1.1.1.5 netbsd-7-nhusb-base-20170116:1.1.1.3 bouyer-socketcan:1.1.1.5.0.2 bouyer-socketcan-base:1.1.1.5 clang-291444:1.1.1.5 pgoyette-localcount-20170107:1.1.1.4 netbsd-7-1-RC1:1.1.1.3 pgoyette-localcount-20161104:1.1.1.4 netbsd-7-0-2-RELEASE:1.1.1.3 localcount-20160914:1.1.1.4 netbsd-7-nhusb:1.1.1.3.0.12 netbsd-7-nhusb-base:1.1.1.3 clang-280599:1.1.1.4 pgoyette-localcount-20160806:1.1.1.4 pgoyette-localcount-20160726:1.1.1.4 pgoyette-localcount:1.1.1.4.0.2 pgoyette-localcount-base:1.1.1.4 netbsd-7-0-1-RELEASE:1.1.1.3 clang-261930:1.1.1.4 netbsd-7-0:1.1.1.3.0.10 netbsd-7-0-RELEASE:1.1.1.3 netbsd-7-0-RC3:1.1.1.3 netbsd-7-0-RC2:1.1.1.3 netbsd-7-0-RC1:1.1.1.3 clang-237755:1.1.1.3 clang-232565:1.1.1.3 clang-227398:1.1.1.3 tls-maxphys-base:1.1.1.3 tls-maxphys:1.1.1.3.0.8 netbsd-7:1.1.1.3.0.6 netbsd-7-base:1.1.1.3 clang-215315:1.1.1.3 clang-209886:1.1.1.3 yamt-pagecache:1.1.1.3.0.4 yamt-pagecache-base9:1.1.1.3 tls-earlyentropy:1.1.1.3.0.2 tls-earlyentropy-base:1.1.1.3 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.3 riastradh-drm2-base3:1.1.1.3 clang-202566:1.1.1.3 clang-201163:1.1.1.3 clang-199312:1.1.1.2 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 2013.11.28.14.14.53; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.53; author joerg; state Exp; branches; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2014.01.05.15.38.14; author joerg; state Exp; branches; next 1.1.1.3; commitid wh3aCSIWykURqWjx; 1.1.1.3 date 2014.02.14.20.07.10; author joerg; state Exp; branches 1.1.1.3.4.1 1.1.1.3.8.1; next 1.1.1.4; commitid annVkZ1sc17rF6px; 1.1.1.4 date 2016.02.27.22.12.07; author joerg; state Exp; branches 1.1.1.4.2.1; next 1.1.1.5; commitid tIimz3oDlh1NpBWy; 1.1.1.5 date 2017.01.11.10.33.19; author joerg; state Exp; branches 1.1.1.5.12.1 1.1.1.5.14.1; next 1.1.1.6; commitid CNnUNfII1jgNmxBz; 1.1.1.6 date 2018.07.17.18.31.00; author joerg; state Exp; branches; next 1.1.1.7; commitid wDzL46ALjrCZgwKA; 1.1.1.7 date 2019.11.13.22.19.21; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.3.4.1 date 2014.02.14.20.07.10; author yamt; state dead; branches; next 1.1.1.3.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.3.4.2 date 2014.05.22.16.18.27; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.3.8.1 date 2014.02.14.20.07.10; author tls; state dead; branches; next 1.1.1.3.8.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.3.8.2 date 2014.08.19.23.47.27; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.4.2.1 date 2017.03.20.06.52.37; author pgoyette; state Exp; branches; next ; commitid jjw7cAwgyKq7RfKz; 1.1.1.5.12.1 date 2018.07.28.04.33.18; author pgoyette; state Exp; branches; next ; commitid 1UP1xAIUxv1ZgRLA; 1.1.1.5.14.1 date 2019.06.10.21.45.21; author christos; state Exp; branches; next 1.1.1.5.14.2; commitid jtc8rnCzWiEEHGqB; 1.1.1.5.14.2 date 2020.04.13.07.46.32; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @//===--- CGVTT.cpp - Emit LLVM Code for C++ VTTs --------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This contains code dealing with C++ code generation of VTTs (vtable tables). // //===----------------------------------------------------------------------===// #include "CodeGenModule.h" #include "CGCXXABI.h" #include "clang/AST/RecordLayout.h" #include "clang/AST/VTTBuilder.h" using namespace clang; using namespace CodeGen; static llvm::Constant * GetAddrOfVTTVTable(CodeGenVTables &CGVT, CodeGenModule &CGM, const CXXRecordDecl *MostDerivedClass, const VTTVTable &VTable, llvm::GlobalVariable::LinkageTypes Linkage, llvm::DenseMap &AddressPoints) { if (VTable.getBase() == MostDerivedClass) { assert(VTable.getBaseOffset().isZero() && "Most derived class vtable must have a zero offset!"); // This is a regular vtable. return CGM.getCXXABI().getAddrOfVTable(MostDerivedClass, CharUnits()); } return CGVT.GenerateConstructionVTable(MostDerivedClass, VTable.getBaseSubobject(), VTable.isVirtual(), Linkage, AddressPoints); } void CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable *VTT, llvm::GlobalVariable::LinkageTypes Linkage, const CXXRecordDecl *RD) { VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/true); llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int64Ty = CGM.Int64Ty; llvm::ArrayType *ArrayType = llvm::ArrayType::get(Int8PtrTy, Builder.getVTTComponents().size()); SmallVector VTables; SmallVector VTableAddressPoints; for (const VTTVTable *i = Builder.getVTTVTables().begin(), *e = Builder.getVTTVTables().end(); i != e; ++i) { VTableAddressPoints.push_back(VTableAddressPointsMapTy()); VTables.push_back(GetAddrOfVTTVTable(*this, CGM, RD, *i, Linkage, VTableAddressPoints.back())); } SmallVector VTTComponents; for (const VTTComponent *i = Builder.getVTTComponents().begin(), *e = Builder.getVTTComponents().end(); i != e; ++i) { const VTTVTable &VTTVT = Builder.getVTTVTables()[i->VTableIndex]; llvm::Constant *VTable = VTables[i->VTableIndex]; uint64_t AddressPoint; if (VTTVT.getBase() == RD) { // Just get the address point for the regular vtable. AddressPoint = ItaniumVTContext.getVTableLayout(RD).getAddressPoint(i->VTableBase); assert(AddressPoint != 0 && "Did not find vtable address point!"); } else { AddressPoint = VTableAddressPoints[i->VTableIndex].lookup(i->VTableBase); assert(AddressPoint != 0 && "Did not find ctor vtable address point!"); } llvm::Value *Idxs[] = { llvm::ConstantInt::get(Int64Ty, 0), llvm::ConstantInt::get(Int64Ty, AddressPoint) }; llvm::Constant *Init = llvm::ConstantExpr::getInBoundsGetElementPtr(VTable, Idxs); Init = llvm::ConstantExpr::getBitCast(Init, Int8PtrTy); VTTComponents.push_back(Init); } llvm::Constant *Init = llvm::ConstantArray::get(ArrayType, VTTComponents); VTT->setInitializer(Init); // Set the correct linkage. VTT->setLinkage(Linkage); // Set the right visibility. CGM.setTypeVisibility(VTT, RD, CodeGenModule::TVK_ForVTT); } llvm::GlobalVariable *CodeGenVTables::GetAddrOfVTT(const CXXRecordDecl *RD) { assert(RD->getNumVBases() && "Only classes with virtual bases need a VTT"); SmallString<256> OutName; llvm::raw_svector_ostream Out(OutName); cast(CGM.getCXXABI().getMangleContext()) .mangleCXXVTT(RD, Out); Out.flush(); StringRef Name = OutName.str(); // This will also defer the definition of the VTT. (void) CGM.getCXXABI().getAddrOfVTable(RD, CharUnits()); VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); llvm::ArrayType *ArrayType = llvm::ArrayType::get(CGM.Int8PtrTy, Builder.getVTTComponents().size()); llvm::GlobalVariable *GV = CGM.CreateOrReplaceCXXRuntimeVariable(Name, ArrayType, llvm::GlobalValue::ExternalLinkage); GV->setUnnamedAddr(true); return GV; } uint64_t CodeGenVTables::getSubVTTIndex(const CXXRecordDecl *RD, BaseSubobject Base) { BaseSubobjectPairTy ClassSubobjectPair(RD, Base); SubVTTIndiciesMapTy::iterator I = SubVTTIndicies.find(ClassSubobjectPair); if (I != SubVTTIndicies.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); for (llvm::DenseMap::const_iterator I = Builder.getSubVTTIndicies().begin(), E = Builder.getSubVTTIndicies().end(); I != E; ++I) { // Insert all indices. BaseSubobjectPairTy ClassSubobjectPair(RD, I->first); SubVTTIndicies.insert(std::make_pair(ClassSubobjectPair, I->second)); } I = SubVTTIndicies.find(ClassSubobjectPair); assert(I != SubVTTIndicies.end() && "Did not find index!"); return I->second; } uint64_t CodeGenVTables::getSecondaryVirtualPointerIndex(const CXXRecordDecl *RD, BaseSubobject Base) { SecondaryVirtualPointerIndicesMapTy::iterator I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); if (I != SecondaryVirtualPointerIndices.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); // Insert all secondary vpointer indices. for (llvm::DenseMap::const_iterator I = Builder.getSecondaryVirtualPointerIndices().begin(), E = Builder.getSecondaryVirtualPointerIndices().end(); I != E; ++I) { std::pair Pair = std::make_pair(RD, I->first); SecondaryVirtualPointerIndices.insert(std::make_pair(Pair, I->second)); } I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); assert(I != SecondaryVirtualPointerIndices.end() && "Did not find index!"); return I->second; } @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.2 log @Import clang 3.5svn r198450. @ text @d69 1 a69 2 getItaniumVTableContext().getVTableLayout(RD).getAddressPoint( i->VTableBase); @ 1.1.1.3 log @Import Clang 3.5svn r201163. @ text @d98 1 a98 1 CGM.setGlobalVisibility(VTT, RD); @ 1.1.1.4 log @Import Clang 3.8.0rc3 r261930. @ text @d21 1 a21 1 static llvm::GlobalVariable * d50 2 a51 2 SmallVector VTables; d64 1 a64 1 llvm::GlobalVariable *VTable = VTables[i->VTableIndex]; d82 2 a83 2 llvm::Constant *Init = llvm::ConstantExpr::getInBoundsGetElementPtr( VTable->getValueType(), VTable, Idxs); a96 3 if (CGM.supportsCOMDAT() && VTT->isWeakForLinker()) VTT->setComdat(CGM.getModule().getOrInsertComdat(VTT->getName())); d108 1 d177 1 @ 1.1.1.4.2.1 log @Sync with HEAD @ text @d26 1 a26 1 VTableLayout::AddressPointsMapTy &AddressPoints) { d47 1 a47 1 llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int32Ty = CGM.Int32Ty; d65 1 a65 1 VTableLayout::AddressPointLocation AddressPoint; d71 1 d74 1 a74 2 assert(AddressPoint.AddressPointIndex != 0 && "Did not find ctor vtable address point!"); d78 2 a79 3 llvm::ConstantInt::get(Int32Ty, 0), llvm::ConstantInt::get(Int32Ty, AddressPoint.VTableIndex), llvm::ConstantInt::get(Int32Ty, AddressPoint.AddressPointIndex), d82 2 a83 3 llvm::Constant *Init = llvm::ConstantExpr::getGetElementPtr( VTable->getValueType(), VTable, Idxs, /*InBounds=*/true, /*InRangeIndex=*/1); d124 1 a124 1 GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); @ 1.1.1.5 log @Import Clang pre-4.0.0 r291444. @ text @d26 1 a26 1 VTableLayout::AddressPointsMapTy &AddressPoints) { d47 1 a47 1 llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int32Ty = CGM.Int32Ty; d65 1 a65 1 VTableLayout::AddressPointLocation AddressPoint; d71 1 d74 1 a74 2 assert(AddressPoint.AddressPointIndex != 0 && "Did not find ctor vtable address point!"); d78 2 a79 3 llvm::ConstantInt::get(Int32Ty, 0), llvm::ConstantInt::get(Int32Ty, AddressPoint.VTableIndex), llvm::ConstantInt::get(Int32Ty, AddressPoint.AddressPointIndex), d82 2 a83 3 llvm::Constant *Init = llvm::ConstantExpr::getGetElementPtr( VTable->getValueType(), VTable, Idxs, /*InBounds=*/true, /*InRangeIndex=*/1); d124 1 a124 1 GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); @ 1.1.1.5.14.1 log @Sync with HEAD @ text @d103 1 a103 1 CGM.setGVProperties(VTT, RD); @ 1.1.1.5.14.2 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.5.12.1 log @Sync with HEAD @ text @d103 1 a103 1 CGM.setGVProperties(VTT, RD); @ 1.1.1.6 log @Import clang r337282 from trunk @ text @d103 1 a103 1 CGM.setGVProperties(VTT, RD); @ 1.1.1.7 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.3.8.1 log @file CGVTT.cpp was added on branch tls-maxphys on 2014-08-19 23:47:27 +0000 @ text @d1 177 @ 1.1.1.3.8.2 log @Rebase to HEAD as of a few days ago. @ text @a0 177 //===--- CGVTT.cpp - Emit LLVM Code for C++ VTTs --------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This contains code dealing with C++ code generation of VTTs (vtable tables). // //===----------------------------------------------------------------------===// #include "CodeGenModule.h" #include "CGCXXABI.h" #include "clang/AST/RecordLayout.h" #include "clang/AST/VTTBuilder.h" using namespace clang; using namespace CodeGen; static llvm::Constant * GetAddrOfVTTVTable(CodeGenVTables &CGVT, CodeGenModule &CGM, const CXXRecordDecl *MostDerivedClass, const VTTVTable &VTable, llvm::GlobalVariable::LinkageTypes Linkage, llvm::DenseMap &AddressPoints) { if (VTable.getBase() == MostDerivedClass) { assert(VTable.getBaseOffset().isZero() && "Most derived class vtable must have a zero offset!"); // This is a regular vtable. return CGM.getCXXABI().getAddrOfVTable(MostDerivedClass, CharUnits()); } return CGVT.GenerateConstructionVTable(MostDerivedClass, VTable.getBaseSubobject(), VTable.isVirtual(), Linkage, AddressPoints); } void CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable *VTT, llvm::GlobalVariable::LinkageTypes Linkage, const CXXRecordDecl *RD) { VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/true); llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int64Ty = CGM.Int64Ty; llvm::ArrayType *ArrayType = llvm::ArrayType::get(Int8PtrTy, Builder.getVTTComponents().size()); SmallVector VTables; SmallVector VTableAddressPoints; for (const VTTVTable *i = Builder.getVTTVTables().begin(), *e = Builder.getVTTVTables().end(); i != e; ++i) { VTableAddressPoints.push_back(VTableAddressPointsMapTy()); VTables.push_back(GetAddrOfVTTVTable(*this, CGM, RD, *i, Linkage, VTableAddressPoints.back())); } SmallVector VTTComponents; for (const VTTComponent *i = Builder.getVTTComponents().begin(), *e = Builder.getVTTComponents().end(); i != e; ++i) { const VTTVTable &VTTVT = Builder.getVTTVTables()[i->VTableIndex]; llvm::Constant *VTable = VTables[i->VTableIndex]; uint64_t AddressPoint; if (VTTVT.getBase() == RD) { // Just get the address point for the regular vtable. AddressPoint = getItaniumVTableContext().getVTableLayout(RD).getAddressPoint( i->VTableBase); assert(AddressPoint != 0 && "Did not find vtable address point!"); } else { AddressPoint = VTableAddressPoints[i->VTableIndex].lookup(i->VTableBase); assert(AddressPoint != 0 && "Did not find ctor vtable address point!"); } llvm::Value *Idxs[] = { llvm::ConstantInt::get(Int64Ty, 0), llvm::ConstantInt::get(Int64Ty, AddressPoint) }; llvm::Constant *Init = llvm::ConstantExpr::getInBoundsGetElementPtr(VTable, Idxs); Init = llvm::ConstantExpr::getBitCast(Init, Int8PtrTy); VTTComponents.push_back(Init); } llvm::Constant *Init = llvm::ConstantArray::get(ArrayType, VTTComponents); VTT->setInitializer(Init); // Set the correct linkage. VTT->setLinkage(Linkage); // Set the right visibility. CGM.setGlobalVisibility(VTT, RD); } llvm::GlobalVariable *CodeGenVTables::GetAddrOfVTT(const CXXRecordDecl *RD) { assert(RD->getNumVBases() && "Only classes with virtual bases need a VTT"); SmallString<256> OutName; llvm::raw_svector_ostream Out(OutName); cast(CGM.getCXXABI().getMangleContext()) .mangleCXXVTT(RD, Out); Out.flush(); StringRef Name = OutName.str(); // This will also defer the definition of the VTT. (void) CGM.getCXXABI().getAddrOfVTable(RD, CharUnits()); VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); llvm::ArrayType *ArrayType = llvm::ArrayType::get(CGM.Int8PtrTy, Builder.getVTTComponents().size()); llvm::GlobalVariable *GV = CGM.CreateOrReplaceCXXRuntimeVariable(Name, ArrayType, llvm::GlobalValue::ExternalLinkage); GV->setUnnamedAddr(true); return GV; } uint64_t CodeGenVTables::getSubVTTIndex(const CXXRecordDecl *RD, BaseSubobject Base) { BaseSubobjectPairTy ClassSubobjectPair(RD, Base); SubVTTIndiciesMapTy::iterator I = SubVTTIndicies.find(ClassSubobjectPair); if (I != SubVTTIndicies.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); for (llvm::DenseMap::const_iterator I = Builder.getSubVTTIndicies().begin(), E = Builder.getSubVTTIndicies().end(); I != E; ++I) { // Insert all indices. BaseSubobjectPairTy ClassSubobjectPair(RD, I->first); SubVTTIndicies.insert(std::make_pair(ClassSubobjectPair, I->second)); } I = SubVTTIndicies.find(ClassSubobjectPair); assert(I != SubVTTIndicies.end() && "Did not find index!"); return I->second; } uint64_t CodeGenVTables::getSecondaryVirtualPointerIndex(const CXXRecordDecl *RD, BaseSubobject Base) { SecondaryVirtualPointerIndicesMapTy::iterator I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); if (I != SecondaryVirtualPointerIndices.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); // Insert all secondary vpointer indices. for (llvm::DenseMap::const_iterator I = Builder.getSecondaryVirtualPointerIndices().begin(), E = Builder.getSecondaryVirtualPointerIndices().end(); I != E; ++I) { std::pair Pair = std::make_pair(RD, I->first); SecondaryVirtualPointerIndices.insert(std::make_pair(Pair, I->second)); } I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); assert(I != SecondaryVirtualPointerIndices.end() && "Did not find index!"); return I->second; } @ 1.1.1.3.4.1 log @file CGVTT.cpp was added on branch yamt-pagecache on 2014-05-22 16:18:27 +0000 @ text @d1 177 @ 1.1.1.3.4.2 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 177 //===--- CGVTT.cpp - Emit LLVM Code for C++ VTTs --------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This contains code dealing with C++ code generation of VTTs (vtable tables). // //===----------------------------------------------------------------------===// #include "CodeGenModule.h" #include "CGCXXABI.h" #include "clang/AST/RecordLayout.h" #include "clang/AST/VTTBuilder.h" using namespace clang; using namespace CodeGen; static llvm::Constant * GetAddrOfVTTVTable(CodeGenVTables &CGVT, CodeGenModule &CGM, const CXXRecordDecl *MostDerivedClass, const VTTVTable &VTable, llvm::GlobalVariable::LinkageTypes Linkage, llvm::DenseMap &AddressPoints) { if (VTable.getBase() == MostDerivedClass) { assert(VTable.getBaseOffset().isZero() && "Most derived class vtable must have a zero offset!"); // This is a regular vtable. return CGM.getCXXABI().getAddrOfVTable(MostDerivedClass, CharUnits()); } return CGVT.GenerateConstructionVTable(MostDerivedClass, VTable.getBaseSubobject(), VTable.isVirtual(), Linkage, AddressPoints); } void CodeGenVTables::EmitVTTDefinition(llvm::GlobalVariable *VTT, llvm::GlobalVariable::LinkageTypes Linkage, const CXXRecordDecl *RD) { VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/true); llvm::Type *Int8PtrTy = CGM.Int8PtrTy, *Int64Ty = CGM.Int64Ty; llvm::ArrayType *ArrayType = llvm::ArrayType::get(Int8PtrTy, Builder.getVTTComponents().size()); SmallVector VTables; SmallVector VTableAddressPoints; for (const VTTVTable *i = Builder.getVTTVTables().begin(), *e = Builder.getVTTVTables().end(); i != e; ++i) { VTableAddressPoints.push_back(VTableAddressPointsMapTy()); VTables.push_back(GetAddrOfVTTVTable(*this, CGM, RD, *i, Linkage, VTableAddressPoints.back())); } SmallVector VTTComponents; for (const VTTComponent *i = Builder.getVTTComponents().begin(), *e = Builder.getVTTComponents().end(); i != e; ++i) { const VTTVTable &VTTVT = Builder.getVTTVTables()[i->VTableIndex]; llvm::Constant *VTable = VTables[i->VTableIndex]; uint64_t AddressPoint; if (VTTVT.getBase() == RD) { // Just get the address point for the regular vtable. AddressPoint = getItaniumVTableContext().getVTableLayout(RD).getAddressPoint( i->VTableBase); assert(AddressPoint != 0 && "Did not find vtable address point!"); } else { AddressPoint = VTableAddressPoints[i->VTableIndex].lookup(i->VTableBase); assert(AddressPoint != 0 && "Did not find ctor vtable address point!"); } llvm::Value *Idxs[] = { llvm::ConstantInt::get(Int64Ty, 0), llvm::ConstantInt::get(Int64Ty, AddressPoint) }; llvm::Constant *Init = llvm::ConstantExpr::getInBoundsGetElementPtr(VTable, Idxs); Init = llvm::ConstantExpr::getBitCast(Init, Int8PtrTy); VTTComponents.push_back(Init); } llvm::Constant *Init = llvm::ConstantArray::get(ArrayType, VTTComponents); VTT->setInitializer(Init); // Set the correct linkage. VTT->setLinkage(Linkage); // Set the right visibility. CGM.setGlobalVisibility(VTT, RD); } llvm::GlobalVariable *CodeGenVTables::GetAddrOfVTT(const CXXRecordDecl *RD) { assert(RD->getNumVBases() && "Only classes with virtual bases need a VTT"); SmallString<256> OutName; llvm::raw_svector_ostream Out(OutName); cast(CGM.getCXXABI().getMangleContext()) .mangleCXXVTT(RD, Out); Out.flush(); StringRef Name = OutName.str(); // This will also defer the definition of the VTT. (void) CGM.getCXXABI().getAddrOfVTable(RD, CharUnits()); VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); llvm::ArrayType *ArrayType = llvm::ArrayType::get(CGM.Int8PtrTy, Builder.getVTTComponents().size()); llvm::GlobalVariable *GV = CGM.CreateOrReplaceCXXRuntimeVariable(Name, ArrayType, llvm::GlobalValue::ExternalLinkage); GV->setUnnamedAddr(true); return GV; } uint64_t CodeGenVTables::getSubVTTIndex(const CXXRecordDecl *RD, BaseSubobject Base) { BaseSubobjectPairTy ClassSubobjectPair(RD, Base); SubVTTIndiciesMapTy::iterator I = SubVTTIndicies.find(ClassSubobjectPair); if (I != SubVTTIndicies.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); for (llvm::DenseMap::const_iterator I = Builder.getSubVTTIndicies().begin(), E = Builder.getSubVTTIndicies().end(); I != E; ++I) { // Insert all indices. BaseSubobjectPairTy ClassSubobjectPair(RD, I->first); SubVTTIndicies.insert(std::make_pair(ClassSubobjectPair, I->second)); } I = SubVTTIndicies.find(ClassSubobjectPair); assert(I != SubVTTIndicies.end() && "Did not find index!"); return I->second; } uint64_t CodeGenVTables::getSecondaryVirtualPointerIndex(const CXXRecordDecl *RD, BaseSubobject Base) { SecondaryVirtualPointerIndicesMapTy::iterator I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); if (I != SecondaryVirtualPointerIndices.end()) return I->second; VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false); // Insert all secondary vpointer indices. for (llvm::DenseMap::const_iterator I = Builder.getSecondaryVirtualPointerIndices().begin(), E = Builder.getSecondaryVirtualPointerIndices().end(); I != E; ++I) { std::pair Pair = std::make_pair(RD, I->first); SecondaryVirtualPointerIndices.insert(std::make_pair(Pair, I->second)); } I = SecondaryVirtualPointerIndices.find(std::make_pair(RD, Base)); assert(I != SecondaryVirtualPointerIndices.end() && "Did not find index!"); return I->second; } @