| //===--- DIBuilder.cpp - Debug Information Builder ------------------------===// | |
| // | |
| // The LLVM Compiler Infrastructure | |
| // | |
| // This file is distributed under the University of Illinois Open Source | |
| // License. See LICENSE.TXT for details. | |
| // | |
| //===----------------------------------------------------------------------===// | |
| // | |
| // This file implements the DIBuilder. | |
| // | |
| //===----------------------------------------------------------------------===// | |
| #include "llvm/IR/DIBuilder.h" | |
| #include "llvm/IR/IRBuilder.h" | |
| #include "LLVMContextImpl.h" | |
| #include "llvm/ADT/Optional.h" | |
| #include "llvm/ADT/STLExtras.h" | |
| #include "llvm/BinaryFormat/Dwarf.h" | |
| #include "llvm/IR/Constants.h" | |
| #include "llvm/IR/DebugInfo.h" | |
| #include "llvm/IR/IntrinsicInst.h" | |
| #include "llvm/IR/Module.h" | |
| #include "llvm/Support/Debug.h" | |
| using namespace llvm; | |
| using namespace llvm::dwarf; | |
| cl::opt<bool> | |
| UseDbgAddr("use-dbg-addr", | |
| llvm::cl::desc("Use llvm.dbg.addr for all local variables"), | |
| cl::init(false), cl::Hidden); | |
| DIBuilder::DIBuilder(Module &m, bool AllowUnresolvedNodes, DICompileUnit *CU) | |
| : M(m), VMContext(M.getContext()), CUNode(CU), | |
| DeclareFn(nullptr), ValueFn(nullptr), LabelFn(nullptr), | |
| AllowUnresolvedNodes(AllowUnresolvedNodes) {} | |
| void DIBuilder::trackIfUnresolved(MDNode *N) { | |
| if (!N) | |
| return; | |
| if (N->isResolved()) | |
| return; | |
| assert(AllowUnresolvedNodes && "Cannot handle unresolved nodes"); | |
| UnresolvedNodes.emplace_back(N); | |
| } | |
| void DIBuilder::finalizeSubprogram(DISubprogram *SP) { | |
| MDTuple *Temp = SP->getRetainedNodes().get(); | |
| if (!Temp || !Temp->isTemporary()) | |
| return; | |
| SmallVector<Metadata *, 16> RetainedNodes; | |
| auto PV = PreservedVariables.find(SP); | |
| if (PV != PreservedVariables.end()) | |
| RetainedNodes.append(PV->second.begin(), PV->second.end()); | |
| auto PL = PreservedLabels.find(SP); | |
| if (PL != PreservedLabels.end()) | |
| RetainedNodes.append(PL->second.begin(), PL->second.end()); | |
| DINodeArray Node = getOrCreateArray(RetainedNodes); | |
| TempMDTuple(Temp)->replaceAllUsesWith(Node.get()); | |
| } | |
| void DIBuilder::finalize() { | |
| if (!CUNode) { | |
| assert(!AllowUnresolvedNodes && | |
| "creating type nodes without a CU is not supported"); | |
| return; | |
| } | |
| CUNode->replaceEnumTypes(MDTuple::get(VMContext, AllEnumTypes)); | |
| SmallVector<Metadata *, 16> RetainValues; | |
| // Declarations and definitions of the same type may be retained. Some | |
| // clients RAUW these pairs, leaving duplicates in the retained types | |
| // list. Use a set to remove the duplicates while we transform the | |
| // TrackingVHs back into Values. | |
| SmallPtrSet<Metadata *, 16> RetainSet; | |
| for (unsigned I = 0, E = AllRetainTypes.size(); I < E; I++) | |
| if (RetainSet.insert(AllRetainTypes[I]).second) | |
| RetainValues.push_back(AllRetainTypes[I]); | |
| if (!RetainValues.empty()) | |
| CUNode->replaceRetainedTypes(MDTuple::get(VMContext, RetainValues)); | |
| DISubprogramArray SPs = MDTuple::get(VMContext, AllSubprograms); | |
| for (auto *SP : SPs) | |
| finalizeSubprogram(SP); | |
| for (auto *N : RetainValues) | |
| if (auto *SP = dyn_cast<DISubprogram>(N)) | |
| finalizeSubprogram(SP); | |
| if (!AllGVs.empty()) | |
| CUNode->replaceGlobalVariables(MDTuple::get(VMContext, AllGVs)); | |
| if (!AllImportedModules.empty()) | |
| CUNode->replaceImportedEntities(MDTuple::get( | |
| VMContext, SmallVector<Metadata *, 16>(AllImportedModules.begin(), | |
| AllImportedModules.end()))); | |
| for (const auto &I : AllMacrosPerParent) { | |
| // DIMacroNode's with nullptr parent are DICompileUnit direct children. | |
| if (!I.first) { | |
| CUNode->replaceMacros(MDTuple::get(VMContext, I.second.getArrayRef())); | |
| continue; | |
| } | |
| // Otherwise, it must be a temporary DIMacroFile that need to be resolved. | |
| auto *TMF = cast<DIMacroFile>(I.first); | |
| auto *MF = DIMacroFile::get(VMContext, dwarf::DW_MACINFO_start_file, | |
| TMF->getLine(), TMF->getFile(), | |
| getOrCreateMacroArray(I.second.getArrayRef())); | |
| replaceTemporary(llvm::TempDIMacroNode(TMF), MF); | |
| } | |
| // Now that all temp nodes have been replaced or deleted, resolve remaining | |
| // cycles. | |
| for (const auto &N : UnresolvedNodes) | |
| if (N && !N->isResolved()) | |
| N->resolveCycles(); | |
| UnresolvedNodes.clear(); | |
| // Can't handle unresolved nodes anymore. | |
| AllowUnresolvedNodes = false; | |
| } | |
| /// If N is compile unit return NULL otherwise return N. | |
| static DIScope *getNonCompileUnitScope(DIScope *N) { | |
| if (!N || isa<DICompileUnit>(N)) | |
| return nullptr; | |
| return cast<DIScope>(N); | |
| } | |
| DICompileUnit *DIBuilder::createCompileUnit( | |
| unsigned Lang, DIFile *File, StringRef Producer, bool isOptimized, | |
| StringRef Flags, unsigned RunTimeVer, StringRef SplitName, | |
| DICompileUnit::DebugEmissionKind Kind, uint64_t DWOId, | |
| bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames) { | |
| assert(((Lang <= dwarf::DW_LANG_Fortran08 && Lang >= dwarf::DW_LANG_C89) || | |
| (Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) && | |
| "Invalid Language tag"); | |
| assert(!CUNode && "Can only make one compile unit per DIBuilder instance"); | |
| CUNode = DICompileUnit::getDistinct( | |
| VMContext, Lang, File, Producer, isOptimized, Flags, RunTimeVer, | |
| SplitName, Kind, nullptr, nullptr, nullptr, nullptr, nullptr, DWOId, | |
| SplitDebugInlining, DebugInfoForProfiling, GnuPubnames); | |
| // Create a named metadata so that it is easier to find cu in a module. | |
| NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu"); | |
| NMD->addOperand(CUNode); | |
| trackIfUnresolved(CUNode); | |
| return CUNode; | |
| } | |
| static DIImportedEntity * | |
| createImportedModule(LLVMContext &C, dwarf::Tag Tag, DIScope *Context, | |
| Metadata *NS, DIFile *File, unsigned Line, StringRef Name, | |
| SmallVectorImpl<TrackingMDNodeRef> &AllImportedModules) { | |
| if (Line) | |
| assert(File && "Source location has line number but no file"); | |
| unsigned EntitiesCount = C.pImpl->DIImportedEntitys.size(); | |
| auto *M = | |
| DIImportedEntity::get(C, Tag, Context, DINodeRef(NS), File, Line, Name); | |
| if (EntitiesCount < C.pImpl->DIImportedEntitys.size()) | |
| // A new Imported Entity was just added to the context. | |
| // Add it to the Imported Modules list. | |
| AllImportedModules.emplace_back(M); | |
| return M; | |
| } | |
| DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context, | |
| DINamespace *NS, DIFile *File, | |
| unsigned Line) { | |
| return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module, | |
| Context, NS, File, Line, StringRef(), | |
| AllImportedModules); | |
| } | |
| DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context, | |
| DIImportedEntity *NS, | |
| DIFile *File, unsigned Line) { | |
| return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module, | |
| Context, NS, File, Line, StringRef(), | |
| AllImportedModules); | |
| } | |
| DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context, DIModule *M, | |
| DIFile *File, unsigned Line) { | |
| return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module, | |
| Context, M, File, Line, StringRef(), | |
| AllImportedModules); | |
| } | |
| DIImportedEntity *DIBuilder::createImportedDeclaration(DIScope *Context, | |
| DINode *Decl, | |
| DIFile *File, | |
| unsigned Line, | |
| StringRef Name) { | |
| // Make sure to use the unique identifier based metadata reference for | |
| // types that have one. | |
| return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration, | |
| Context, Decl, File, Line, Name, | |
| AllImportedModules); | |
| } | |
| DIFile *DIBuilder::createFile(StringRef Filename, StringRef Directory, | |
| Optional<DIFile::ChecksumInfo<StringRef>> CS, | |
| Optional<StringRef> Source) { | |
| return DIFile::get(VMContext, Filename, Directory, CS, Source); | |
| } | |
| DIMacro *DIBuilder::createMacro(DIMacroFile *Parent, unsigned LineNumber, | |
| unsigned MacroType, StringRef Name, | |
| StringRef Value) { | |
| assert(!Name.empty() && "Unable to create macro without name"); | |
| assert((MacroType == dwarf::DW_MACINFO_undef || | |
| MacroType == dwarf::DW_MACINFO_define) && | |
| "Unexpected macro type"); | |
| auto *M = DIMacro::get(VMContext, MacroType, LineNumber, Name, Value); | |
| AllMacrosPerParent[Parent].insert(M); | |
| return M; | |
| } | |
| DIMacroFile *DIBuilder::createTempMacroFile(DIMacroFile *Parent, | |
| unsigned LineNumber, DIFile *File) { | |
| auto *MF = DIMacroFile::getTemporary(VMContext, dwarf::DW_MACINFO_start_file, | |
| LineNumber, File, DIMacroNodeArray()) | |
| .release(); | |
| AllMacrosPerParent[Parent].insert(MF); | |
| // Add the new temporary DIMacroFile to the macro per parent map as a parent. | |
| // This is needed to assure DIMacroFile with no children to have an entry in | |
| // the map. Otherwise, it will not be resolved in DIBuilder::finalize(). | |
| AllMacrosPerParent.insert({MF, {}}); | |
| return MF; | |
| } | |
| DIEnumerator *DIBuilder::createEnumerator(StringRef Name, int64_t Val, | |
| bool IsUnsigned) { | |
| assert(!Name.empty() && "Unable to create enumerator without name"); | |
| return DIEnumerator::get(VMContext, Val, IsUnsigned, Name); | |
| } | |
| DIBasicType *DIBuilder::createUnspecifiedType(StringRef Name) { | |
| assert(!Name.empty() && "Unable to create type without name"); | |
| return DIBasicType::get(VMContext, dwarf::DW_TAG_unspecified_type, Name); | |
| } | |
| DIBasicType *DIBuilder::createNullPtrType() { | |
| return createUnspecifiedType("decltype(nullptr)"); | |
| } | |
| DIBasicType *DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits, | |
| unsigned Encoding) { | |
| assert(!Name.empty() && "Unable to create type without name"); | |
| return DIBasicType::get(VMContext, dwarf::DW_TAG_base_type, Name, SizeInBits, | |
| 0, Encoding); | |
| } | |
| DIDerivedType *DIBuilder::createQualifiedType(unsigned Tag, DIType *FromTy) { | |
| return DIDerivedType::get(VMContext, Tag, "", nullptr, 0, nullptr, FromTy, 0, | |
| 0, 0, None, DINode::FlagZero); | |
| } | |
| DIDerivedType *DIBuilder::createPointerType( | |
| DIType *PointeeTy, | |
| uint64_t SizeInBits, | |
| uint32_t AlignInBits, | |
| Optional<unsigned> DWARFAddressSpace, | |
| StringRef Name) { | |
| // FIXME: Why is there a name here? | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_pointer_type, Name, | |
| nullptr, 0, nullptr, PointeeTy, SizeInBits, | |
| AlignInBits, 0, DWARFAddressSpace, | |
| DINode::FlagZero); | |
| } | |
| DIDerivedType *DIBuilder::createMemberPointerType(DIType *PointeeTy, | |
| DIType *Base, | |
| uint64_t SizeInBits, | |
| uint32_t AlignInBits, | |
| DINode::DIFlags Flags) { | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_ptr_to_member_type, "", | |
| nullptr, 0, nullptr, PointeeTy, SizeInBits, | |
| AlignInBits, 0, None, Flags, Base); | |
| } | |
| DIDerivedType *DIBuilder::createReferenceType( | |
| unsigned Tag, DIType *RTy, | |
| uint64_t SizeInBits, | |
| uint32_t AlignInBits, | |
| Optional<unsigned> DWARFAddressSpace) { | |
| assert(RTy && "Unable to create reference type"); | |
| return DIDerivedType::get(VMContext, Tag, "", nullptr, 0, nullptr, RTy, | |
| SizeInBits, AlignInBits, 0, DWARFAddressSpace, | |
| DINode::FlagZero); | |
| } | |
| DIDerivedType *DIBuilder::createTypedef(DIType *Ty, StringRef Name, | |
| DIFile *File, unsigned LineNo, | |
| DIScope *Context) { | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_typedef, Name, File, | |
| LineNo, getNonCompileUnitScope(Context), Ty, 0, 0, | |
| 0, None, DINode::FlagZero); | |
| } | |
| DIDerivedType *DIBuilder::createFriend(DIType *Ty, DIType *FriendTy) { | |
| assert(Ty && "Invalid type!"); | |
| assert(FriendTy && "Invalid friend type!"); | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_friend, "", nullptr, 0, Ty, | |
| FriendTy, 0, 0, 0, None, DINode::FlagZero); | |
| } | |
| DIDerivedType *DIBuilder::createInheritance(DIType *Ty, DIType *BaseTy, | |
| uint64_t BaseOffset, | |
| uint32_t VBPtrOffset, | |
| DINode::DIFlags Flags) { | |
| assert(Ty && "Unable to create inheritance"); | |
| Metadata *ExtraData = ConstantAsMetadata::get( | |
| ConstantInt::get(IntegerType::get(VMContext, 32), VBPtrOffset)); | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_inheritance, "", nullptr, | |
| 0, Ty, BaseTy, 0, 0, BaseOffset, None, | |
| Flags, ExtraData); | |
| } | |
| DIDerivedType *DIBuilder::createMemberType(DIScope *Scope, StringRef Name, | |
| DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, | |
| uint32_t AlignInBits, | |
| uint64_t OffsetInBits, | |
| DINode::DIFlags Flags, DIType *Ty) { | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File, | |
| LineNumber, getNonCompileUnitScope(Scope), Ty, | |
| SizeInBits, AlignInBits, OffsetInBits, None, Flags); | |
| } | |
| static ConstantAsMetadata *getConstantOrNull(Constant *C) { | |
| if (C) | |
| return ConstantAsMetadata::get(C); | |
| return nullptr; | |
| } | |
| DIDerivedType *DIBuilder::createVariantMemberType(DIScope *Scope, StringRef Name, | |
| DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, | |
| uint32_t AlignInBits, | |
| uint64_t OffsetInBits, | |
| Constant *Discriminant, | |
| DINode::DIFlags Flags, DIType *Ty) { | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File, | |
| LineNumber, getNonCompileUnitScope(Scope), Ty, | |
| SizeInBits, AlignInBits, OffsetInBits, None, Flags, | |
| getConstantOrNull(Discriminant)); | |
| } | |
| DIDerivedType *DIBuilder::createBitFieldMemberType( | |
| DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint64_t OffsetInBits, uint64_t StorageOffsetInBits, | |
| DINode::DIFlags Flags, DIType *Ty) { | |
| Flags |= DINode::FlagBitField; | |
| return DIDerivedType::get( | |
| VMContext, dwarf::DW_TAG_member, Name, File, LineNumber, | |
| getNonCompileUnitScope(Scope), Ty, SizeInBits, /* AlignInBits */ 0, | |
| OffsetInBits, None, Flags, | |
| ConstantAsMetadata::get(ConstantInt::get(IntegerType::get(VMContext, 64), | |
| StorageOffsetInBits))); | |
| } | |
| DIDerivedType * | |
| DIBuilder::createStaticMemberType(DIScope *Scope, StringRef Name, DIFile *File, | |
| unsigned LineNumber, DIType *Ty, | |
| DINode::DIFlags Flags, llvm::Constant *Val, | |
| uint32_t AlignInBits) { | |
| Flags |= DINode::FlagStaticMember; | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File, | |
| LineNumber, getNonCompileUnitScope(Scope), Ty, 0, | |
| AlignInBits, 0, None, Flags, | |
| getConstantOrNull(Val)); | |
| } | |
| DIDerivedType * | |
| DIBuilder::createObjCIVar(StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, | |
| uint64_t OffsetInBits, DINode::DIFlags Flags, | |
| DIType *Ty, MDNode *PropertyNode) { | |
| return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File, | |
| LineNumber, getNonCompileUnitScope(File), Ty, | |
| SizeInBits, AlignInBits, OffsetInBits, None, Flags, | |
| PropertyNode); | |
| } | |
| DIObjCProperty * | |
| DIBuilder::createObjCProperty(StringRef Name, DIFile *File, unsigned LineNumber, | |
| StringRef GetterName, StringRef SetterName, | |
| unsigned PropertyAttributes, DIType *Ty) { | |
| return DIObjCProperty::get(VMContext, Name, File, LineNumber, GetterName, | |
| SetterName, PropertyAttributes, Ty); | |
| } | |
| DITemplateTypeParameter * | |
| DIBuilder::createTemplateTypeParameter(DIScope *Context, StringRef Name, | |
| DIType *Ty) { | |
| assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit"); | |
| return DITemplateTypeParameter::get(VMContext, Name, Ty); | |
| } | |
| static DITemplateValueParameter * | |
| createTemplateValueParameterHelper(LLVMContext &VMContext, unsigned Tag, | |
| DIScope *Context, StringRef Name, DIType *Ty, | |
| Metadata *MD) { | |
| assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit"); | |
| return DITemplateValueParameter::get(VMContext, Tag, Name, Ty, MD); | |
| } | |
| DITemplateValueParameter * | |
| DIBuilder::createTemplateValueParameter(DIScope *Context, StringRef Name, | |
| DIType *Ty, Constant *Val) { | |
| return createTemplateValueParameterHelper( | |
| VMContext, dwarf::DW_TAG_template_value_parameter, Context, Name, Ty, | |
| getConstantOrNull(Val)); | |
| } | |
| DITemplateValueParameter * | |
| DIBuilder::createTemplateTemplateParameter(DIScope *Context, StringRef Name, | |
| DIType *Ty, StringRef Val) { | |
| return createTemplateValueParameterHelper( | |
| VMContext, dwarf::DW_TAG_GNU_template_template_param, Context, Name, Ty, | |
| MDString::get(VMContext, Val)); | |
| } | |
| DITemplateValueParameter * | |
| DIBuilder::createTemplateParameterPack(DIScope *Context, StringRef Name, | |
| DIType *Ty, DINodeArray Val) { | |
| return createTemplateValueParameterHelper( | |
| VMContext, dwarf::DW_TAG_GNU_template_parameter_pack, Context, Name, Ty, | |
| Val.get()); | |
| } | |
| DICompositeType *DIBuilder::createClassType( | |
| DIScope *Context, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits, | |
| DINode::DIFlags Flags, DIType *DerivedFrom, DINodeArray Elements, | |
| DIType *VTableHolder, MDNode *TemplateParams, StringRef UniqueIdentifier) { | |
| assert((!Context || isa<DIScope>(Context)) && | |
| "createClassType should be called with a valid Context"); | |
| auto *R = DICompositeType::get( | |
| VMContext, dwarf::DW_TAG_structure_type, Name, File, LineNumber, | |
| getNonCompileUnitScope(Context), DerivedFrom, SizeInBits, AlignInBits, | |
| OffsetInBits, Flags, Elements, 0, VTableHolder, | |
| cast_or_null<MDTuple>(TemplateParams), UniqueIdentifier); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DICompositeType *DIBuilder::createStructType( | |
| DIScope *Context, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags, | |
| DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang, | |
| DIType *VTableHolder, StringRef UniqueIdentifier) { | |
| auto *R = DICompositeType::get( | |
| VMContext, dwarf::DW_TAG_structure_type, Name, File, LineNumber, | |
| getNonCompileUnitScope(Context), DerivedFrom, SizeInBits, AlignInBits, 0, | |
| Flags, Elements, RunTimeLang, VTableHolder, nullptr, UniqueIdentifier); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DICompositeType *DIBuilder::createUnionType( | |
| DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags, | |
| DINodeArray Elements, unsigned RunTimeLang, StringRef UniqueIdentifier) { | |
| auto *R = DICompositeType::get( | |
| VMContext, dwarf::DW_TAG_union_type, Name, File, LineNumber, | |
| getNonCompileUnitScope(Scope), nullptr, SizeInBits, AlignInBits, 0, Flags, | |
| Elements, RunTimeLang, nullptr, nullptr, UniqueIdentifier); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DICompositeType *DIBuilder::createVariantPart( | |
| DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags, | |
| DIDerivedType *Discriminator, DINodeArray Elements, StringRef UniqueIdentifier) { | |
| auto *R = DICompositeType::get( | |
| VMContext, dwarf::DW_TAG_variant_part, Name, File, LineNumber, | |
| getNonCompileUnitScope(Scope), nullptr, SizeInBits, AlignInBits, 0, Flags, | |
| Elements, 0, nullptr, nullptr, UniqueIdentifier, Discriminator); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DISubroutineType *DIBuilder::createSubroutineType(DITypeRefArray ParameterTypes, | |
| DINode::DIFlags Flags, | |
| unsigned CC) { | |
| return DISubroutineType::get(VMContext, Flags, CC, ParameterTypes); | |
| } | |
| DICompositeType *DIBuilder::createEnumerationType( | |
| DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber, | |
| uint64_t SizeInBits, uint32_t AlignInBits, DINodeArray Elements, | |
| DIType *UnderlyingType, StringRef UniqueIdentifier, bool IsFixed) { | |
| auto *CTy = DICompositeType::get( | |
| VMContext, dwarf::DW_TAG_enumeration_type, Name, File, LineNumber, | |
| getNonCompileUnitScope(Scope), UnderlyingType, SizeInBits, AlignInBits, 0, | |
| IsFixed ? DINode::FlagFixedEnum : DINode::FlagZero, Elements, 0, nullptr, | |
| nullptr, UniqueIdentifier); | |
| AllEnumTypes.push_back(CTy); | |
| trackIfUnresolved(CTy); | |
| return CTy; | |
| } | |
| DICompositeType *DIBuilder::createArrayType(uint64_t Size, | |
| uint32_t AlignInBits, DIType *Ty, | |
| DINodeArray Subscripts) { | |
| auto *R = DICompositeType::get(VMContext, dwarf::DW_TAG_array_type, "", | |
| nullptr, 0, nullptr, Ty, Size, AlignInBits, 0, | |
| DINode::FlagZero, Subscripts, 0, nullptr); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DICompositeType *DIBuilder::createVectorType(uint64_t Size, | |
| uint32_t AlignInBits, DIType *Ty, | |
| DINodeArray Subscripts) { | |
| auto *R = DICompositeType::get(VMContext, dwarf::DW_TAG_array_type, "", | |
| nullptr, 0, nullptr, Ty, Size, AlignInBits, 0, | |
| DINode::FlagVector, Subscripts, 0, nullptr); | |
| trackIfUnresolved(R); | |
| return R; | |
| } | |
| DISubprogram *DIBuilder::createArtificialSubprogram(DISubprogram *SP) { | |
| auto NewSP = SP->cloneWithFlags(SP->getFlags() | DINode::FlagArtificial); | |
| return MDNode::replaceWithDistinct(std::move(NewSP)); | |
| } | |
| static DIType *createTypeWithFlags(const DIType *Ty, | |
| DINode::DIFlags FlagsToSet) { | |
| auto NewTy = Ty->cloneWithFlags(Ty->getFlags() | FlagsToSet); | |
| return MDNode::replaceWithUniqued(std::move(NewTy)); | |
| } | |
| DIType *DIBuilder::createArtificialType(DIType *Ty) { | |
| // FIXME: Restrict this to the nodes where it's valid. | |
| if (Ty->isArtificial()) | |
| return Ty; | |
| return createTypeWithFlags(Ty, DINode::FlagArtificial); | |
| } | |
| DIType *DIBuilder::createObjectPointerType(DIType *Ty) { | |
| // FIXME: Restrict this to the nodes where it's valid. | |
| if (Ty->isObjectPointer()) | |
| return Ty; | |
| DINode::DIFlags Flags = DINode::FlagObjectPointer | DINode::FlagArtificial; | |
| return createTypeWithFlags(Ty, Flags); | |
| } | |
| void DIBuilder::retainType(DIScope *T) { | |
| assert(T && "Expected non-null type"); | |
| assert((isa<DIType>(T) || (isa<DISubprogram>(T) && | |
| cast<DISubprogram>(T)->isDefinition() == false)) && | |
| "Expected type or subprogram declaration"); | |
| AllRetainTypes.emplace_back(T); | |
| } | |
| DIBasicType *DIBuilder::createUnspecifiedParameter() { return nullptr; } | |
| DICompositeType * | |
| DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIScope *Scope, | |
| DIFile *F, unsigned Line, unsigned RuntimeLang, | |
| uint64_t SizeInBits, uint32_t AlignInBits, | |
| StringRef UniqueIdentifier) { | |
| // FIXME: Define in terms of createReplaceableForwardDecl() by calling | |
| // replaceWithUniqued(). | |
| auto *RetTy = DICompositeType::get( | |
| VMContext, Tag, Name, F, Line, getNonCompileUnitScope(Scope), nullptr, | |
| SizeInBits, AlignInBits, 0, DINode::FlagFwdDecl, nullptr, RuntimeLang, | |
| nullptr, nullptr, UniqueIdentifier); | |
| trackIfUnresolved(RetTy); | |
| return RetTy; | |
| } | |
| DICompositeType *DIBuilder::createReplaceableCompositeType( | |
| unsigned Tag, StringRef Name, DIScope *Scope, DIFile *F, unsigned Line, | |
| unsigned RuntimeLang, uint64_t SizeInBits, uint32_t AlignInBits, | |
| DINode::DIFlags Flags, StringRef UniqueIdentifier) { | |
| auto *RetTy = | |
| DICompositeType::getTemporary( | |
| VMContext, Tag, Name, F, Line, getNonCompileUnitScope(Scope), nullptr, | |
| SizeInBits, AlignInBits, 0, Flags, nullptr, RuntimeLang, nullptr, | |
| nullptr, UniqueIdentifier) | |
| .release(); | |
| trackIfUnresolved(RetTy); | |
| return RetTy; | |
| } | |
| DINodeArray DIBuilder::getOrCreateArray(ArrayRef<Metadata *> Elements) { | |
| return MDTuple::get(VMContext, Elements); | |
| } | |
| DIMacroNodeArray | |
| DIBuilder::getOrCreateMacroArray(ArrayRef<Metadata *> Elements) { | |
| return MDTuple::get(VMContext, Elements); | |
| } | |
| DITypeRefArray DIBuilder::getOrCreateTypeArray(ArrayRef<Metadata *> Elements) { | |
| SmallVector<llvm::Metadata *, 16> Elts; | |
| for (unsigned i = 0, e = Elements.size(); i != e; ++i) { | |
| if (Elements[i] && isa<MDNode>(Elements[i])) | |
| Elts.push_back(cast<DIType>(Elements[i])); | |
| else | |
| Elts.push_back(Elements[i]); | |
| } | |
| return DITypeRefArray(MDNode::get(VMContext, Elts)); | |
| } | |
| DISubrange *DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Count) { | |
| return DISubrange::get(VMContext, Count, Lo); | |
| } | |
| DISubrange *DIBuilder::getOrCreateSubrange(int64_t Lo, Metadata *CountNode) { | |
| return DISubrange::get(VMContext, CountNode, Lo); | |
| } | |
| static void checkGlobalVariableScope(DIScope *Context) { | |
| #ifndef NDEBUG | |
| if (auto *CT = | |
| dyn_cast_or_null<DICompositeType>(getNonCompileUnitScope(Context))) | |
| assert(CT->getIdentifier().empty() && | |
| "Context of a global variable should not be a type with identifier"); | |
| #endif | |
| } | |
| DIGlobalVariableExpression *DIBuilder::createGlobalVariableExpression( | |
| DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F, | |
| unsigned LineNumber, DIType *Ty, bool isLocalToUnit, DIExpression *Expr, | |
| MDNode *Decl, uint32_t AlignInBits) { | |
| checkGlobalVariableScope(Context); | |
| auto *GV = DIGlobalVariable::getDistinct( | |
| VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F, | |
| LineNumber, Ty, isLocalToUnit, true, cast_or_null<DIDerivedType>(Decl), | |
| AlignInBits); | |
| if (!Expr) | |
| Expr = createExpression(); | |
| auto *N = DIGlobalVariableExpression::get(VMContext, GV, Expr); | |
| AllGVs.push_back(N); | |
| return N; | |
| } | |
| DIGlobalVariable *DIBuilder::createTempGlobalVariableFwdDecl( | |
| DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F, | |
| unsigned LineNumber, DIType *Ty, bool isLocalToUnit, MDNode *Decl, | |
| uint32_t AlignInBits) { | |
| checkGlobalVariableScope(Context); | |
| return DIGlobalVariable::getTemporary( | |
| VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F, | |
| LineNumber, Ty, isLocalToUnit, false, | |
| cast_or_null<DIDerivedType>(Decl), AlignInBits) | |
| .release(); | |
| } | |
| static DILocalVariable *createLocalVariable( | |
| LLVMContext &VMContext, | |
| DenseMap<MDNode *, SmallVector<TrackingMDNodeRef, 1>> &PreservedVariables, | |
| DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File, | |
| unsigned LineNo, DIType *Ty, bool AlwaysPreserve, DINode::DIFlags Flags, | |
| uint32_t AlignInBits) { | |
| // FIXME: Why getNonCompileUnitScope()? | |
| // FIXME: Why is "!Context" okay here? | |
| // FIXME: Why doesn't this check for a subprogram or lexical block (AFAICT | |
| // the only valid scopes)? | |
| DIScope *Context = getNonCompileUnitScope(Scope); | |
| auto *Node = | |
| DILocalVariable::get(VMContext, cast_or_null<DILocalScope>(Context), Name, | |
| File, LineNo, Ty, ArgNo, Flags, AlignInBits); | |
| if (AlwaysPreserve) { | |
| // The optimizer may remove local variables. If there is an interest | |
| // to preserve variable info in such situation then stash it in a | |
| // named mdnode. | |
| DISubprogram *Fn = getDISubprogram(Scope); | |
| assert(Fn && "Missing subprogram for local variable"); | |
| PreservedVariables[Fn].emplace_back(Node); | |
| } | |
| return Node; | |
| } | |
| DILocalVariable *DIBuilder::createAutoVariable(DIScope *Scope, StringRef Name, | |
| DIFile *File, unsigned LineNo, | |
| DIType *Ty, bool AlwaysPreserve, | |
| DINode::DIFlags Flags, | |
| uint32_t AlignInBits) { | |
| return createLocalVariable(VMContext, PreservedVariables, Scope, Name, | |
| /* ArgNo */ 0, File, LineNo, Ty, AlwaysPreserve, | |
| Flags, AlignInBits); | |
| } | |
| DILocalVariable *DIBuilder::createParameterVariable( | |
| DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File, | |
| unsigned LineNo, DIType *Ty, bool AlwaysPreserve, DINode::DIFlags Flags) { | |
| assert(ArgNo && "Expected non-zero argument number for parameter"); | |
| return createLocalVariable(VMContext, PreservedVariables, Scope, Name, ArgNo, | |
| File, LineNo, Ty, AlwaysPreserve, Flags, | |
| /* AlignInBits */0); | |
| } | |
| DILabel *DIBuilder::createLabel( | |
| DIScope *Scope, StringRef Name, DIFile *File, | |
| unsigned LineNo, bool AlwaysPreserve) { | |
| DIScope *Context = getNonCompileUnitScope(Scope); | |
| auto *Node = | |
| DILabel::get(VMContext, cast_or_null<DILocalScope>(Context), Name, | |
| File, LineNo); | |
| if (AlwaysPreserve) { | |
| /// The optimizer may remove labels. If there is an interest | |
| /// to preserve label info in such situation then append it to | |
| /// the list of retained nodes of the DISubprogram. | |
| DISubprogram *Fn = getDISubprogram(Scope); | |
| assert(Fn && "Missing subprogram for label"); | |
| PreservedLabels[Fn].emplace_back(Node); | |
| } | |
| return Node; | |
| } | |
| DIExpression *DIBuilder::createExpression(ArrayRef<uint64_t> Addr) { | |
| return DIExpression::get(VMContext, Addr); | |
| } | |
| DIExpression *DIBuilder::createExpression(ArrayRef<int64_t> Signed) { | |
| // TODO: Remove the callers of this signed version and delete. | |
| SmallVector<uint64_t, 8> Addr(Signed.begin(), Signed.end()); | |
| return createExpression(Addr); | |
| } | |
| template <class... Ts> | |
| static DISubprogram *getSubprogram(bool IsDistinct, Ts &&... Args) { | |
| if (IsDistinct) | |
| return DISubprogram::getDistinct(std::forward<Ts>(Args)...); | |
| return DISubprogram::get(std::forward<Ts>(Args)...); | |
| } | |
| DISubprogram *DIBuilder::createFunction( | |
| DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File, | |
| unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, | |
| bool isDefinition, unsigned ScopeLine, DINode::DIFlags Flags, | |
| bool isOptimized, DITemplateParameterArray TParams, DISubprogram *Decl, | |
| DITypeArray ThrownTypes) { | |
| auto *Node = getSubprogram( | |
| /* IsDistinct = */ isDefinition, VMContext, | |
| getNonCompileUnitScope(Context), Name, LinkageName, File, LineNo, Ty, | |
| isLocalToUnit, isDefinition, ScopeLine, nullptr, 0, 0, 0, Flags, | |
| isOptimized, isDefinition ? CUNode : nullptr, TParams, Decl, | |
| MDTuple::getTemporary(VMContext, None).release(), ThrownTypes); | |
| if (isDefinition) | |
| AllSubprograms.push_back(Node); | |
| trackIfUnresolved(Node); | |
| return Node; | |
| } | |
| DISubprogram *DIBuilder::createTempFunctionFwdDecl( | |
| DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File, | |
| unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, | |
| bool isDefinition, unsigned ScopeLine, DINode::DIFlags Flags, | |
| bool isOptimized, DITemplateParameterArray TParams, DISubprogram *Decl, | |
| DITypeArray ThrownTypes) { | |
| return DISubprogram::getTemporary( | |
| VMContext, getNonCompileUnitScope(Context), Name, LinkageName, | |
| File, LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine, nullptr, | |
| 0, 0, 0, Flags, isOptimized, isDefinition ? CUNode : nullptr, | |
| TParams, Decl, nullptr, ThrownTypes) | |
| .release(); | |
| } | |
| DISubprogram *DIBuilder::createMethod( | |
| DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F, | |
| unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit, | |
| bool isDefinition, unsigned VK, unsigned VIndex, int ThisAdjustment, | |
| DIType *VTableHolder, DINode::DIFlags Flags, bool isOptimized, | |
| DITemplateParameterArray TParams, DITypeArray ThrownTypes) { | |
| assert(getNonCompileUnitScope(Context) && | |
| "Methods should have both a Context and a context that isn't " | |
| "the compile unit."); | |
| // FIXME: Do we want to use different scope/lines? | |
| auto *SP = getSubprogram( | |
| /* IsDistinct = */ isDefinition, VMContext, cast<DIScope>(Context), Name, | |
| LinkageName, F, LineNo, Ty, isLocalToUnit, isDefinition, LineNo, | |
| VTableHolder, VK, VIndex, ThisAdjustment, Flags, isOptimized, | |
| isDefinition ? CUNode : nullptr, TParams, nullptr, nullptr, ThrownTypes); | |
| if (isDefinition) | |
| AllSubprograms.push_back(SP); | |
| trackIfUnresolved(SP); | |
| return SP; | |
| } | |
| DINamespace *DIBuilder::createNameSpace(DIScope *Scope, StringRef Name, | |
| bool ExportSymbols) { | |
| // It is okay to *not* make anonymous top-level namespaces distinct, because | |
| // all nodes that have an anonymous namespace as their parent scope are | |
| // guaranteed to be unique and/or are linked to their containing | |
| // DICompileUnit. This decision is an explicit tradeoff of link time versus | |
| // memory usage versus code simplicity and may get revisited in the future. | |
| return DINamespace::get(VMContext, getNonCompileUnitScope(Scope), Name, | |
| ExportSymbols); | |
| } | |
| DIModule *DIBuilder::createModule(DIScope *Scope, StringRef Name, | |
| StringRef ConfigurationMacros, | |
| StringRef IncludePath, | |
| StringRef ISysRoot) { | |
| return DIModule::get(VMContext, getNonCompileUnitScope(Scope), Name, | |
| ConfigurationMacros, IncludePath, ISysRoot); | |
| } | |
| DILexicalBlockFile *DIBuilder::createLexicalBlockFile(DIScope *Scope, | |
| DIFile *File, | |
| unsigned Discriminator) { | |
| return DILexicalBlockFile::get(VMContext, Scope, File, Discriminator); | |
| } | |
| DILexicalBlock *DIBuilder::createLexicalBlock(DIScope *Scope, DIFile *File, | |
| unsigned Line, unsigned Col) { | |
| // Make these distinct, to avoid merging two lexical blocks on the same | |
| // file/line/column. | |
| return DILexicalBlock::getDistinct(VMContext, getNonCompileUnitScope(Scope), | |
| File, Line, Col); | |
| } | |
| Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo, | |
| DIExpression *Expr, const DILocation *DL, | |
| Instruction *InsertBefore) { | |
| return insertDeclare(Storage, VarInfo, Expr, DL, InsertBefore->getParent(), | |
| InsertBefore); | |
| } | |
| Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo, | |
| DIExpression *Expr, const DILocation *DL, | |
| BasicBlock *InsertAtEnd) { | |
| // If this block already has a terminator then insert this intrinsic before | |
| // the terminator. Otherwise, put it at the end of the block. | |
| Instruction *InsertBefore = InsertAtEnd->getTerminator(); | |
| return insertDeclare(Storage, VarInfo, Expr, DL, InsertAtEnd, InsertBefore); | |
| } | |
| Instruction *DIBuilder::insertLabel(DILabel *LabelInfo, const DILocation *DL, | |
| Instruction *InsertBefore) { | |
| return insertLabel( | |
| LabelInfo, DL, InsertBefore ? InsertBefore->getParent() : nullptr, | |
| InsertBefore); | |
| } | |
| Instruction *DIBuilder::insertLabel(DILabel *LabelInfo, const DILocation *DL, | |
| BasicBlock *InsertAtEnd) { | |
| return insertLabel(LabelInfo, DL, InsertAtEnd, nullptr); | |
| } | |
| Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, | |
| DILocalVariable *VarInfo, | |
| DIExpression *Expr, | |
| const DILocation *DL, | |
| Instruction *InsertBefore) { | |
| return insertDbgValueIntrinsic( | |
| V, VarInfo, Expr, DL, InsertBefore ? InsertBefore->getParent() : nullptr, | |
| InsertBefore); | |
| } | |
| Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, | |
| DILocalVariable *VarInfo, | |
| DIExpression *Expr, | |
| const DILocation *DL, | |
| BasicBlock *InsertAtEnd) { | |
| return insertDbgValueIntrinsic(V, VarInfo, Expr, DL, InsertAtEnd, nullptr); | |
| } | |
| /// Return an IRBuilder for inserting dbg.declare and dbg.value intrinsics. This | |
| /// abstracts over the various ways to specify an insert position. | |
| static IRBuilder<> getIRBForDbgInsertion(const DILocation *DL, | |
| BasicBlock *InsertBB, | |
| Instruction *InsertBefore) { | |
| IRBuilder<> B(DL->getContext()); | |
| if (InsertBefore) | |
| B.SetInsertPoint(InsertBefore); | |
| else if (InsertBB) | |
| B.SetInsertPoint(InsertBB); | |
| B.SetCurrentDebugLocation(DL); | |
| return B; | |
| } | |
| static Value *getDbgIntrinsicValueImpl(LLVMContext &VMContext, Value *V) { | |
| assert(V && "no value passed to dbg intrinsic"); | |
| return MetadataAsValue::get(VMContext, ValueAsMetadata::get(V)); | |
| } | |
| static Function *getDeclareIntrin(Module &M) { | |
| return Intrinsic::getDeclaration(&M, UseDbgAddr ? Intrinsic::dbg_addr | |
| : Intrinsic::dbg_declare); | |
| } | |
| Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo, | |
| DIExpression *Expr, const DILocation *DL, | |
| BasicBlock *InsertBB, Instruction *InsertBefore) { | |
| assert(VarInfo && "empty or invalid DILocalVariable* passed to dbg.declare"); | |
| assert(DL && "Expected debug loc"); | |
| assert(DL->getScope()->getSubprogram() == | |
| VarInfo->getScope()->getSubprogram() && | |
| "Expected matching subprograms"); | |
| if (!DeclareFn) | |
| DeclareFn = getDeclareIntrin(M); | |
| trackIfUnresolved(VarInfo); | |
| trackIfUnresolved(Expr); | |
| Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, Storage), | |
| MetadataAsValue::get(VMContext, VarInfo), | |
| MetadataAsValue::get(VMContext, Expr)}; | |
| IRBuilder<> B = getIRBForDbgInsertion(DL, InsertBB, InsertBefore); | |
| return B.CreateCall(DeclareFn, Args); | |
| } | |
| Instruction *DIBuilder::insertDbgValueIntrinsic( | |
| Value *V, DILocalVariable *VarInfo, DIExpression *Expr, | |
| const DILocation *DL, BasicBlock *InsertBB, Instruction *InsertBefore) { | |
| assert(V && "no value passed to dbg.value"); | |
| assert(VarInfo && "empty or invalid DILocalVariable* passed to dbg.value"); | |
| assert(DL && "Expected debug loc"); | |
| assert(DL->getScope()->getSubprogram() == | |
| VarInfo->getScope()->getSubprogram() && | |
| "Expected matching subprograms"); | |
| if (!ValueFn) | |
| ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value); | |
| trackIfUnresolved(VarInfo); | |
| trackIfUnresolved(Expr); | |
| Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, V), | |
| MetadataAsValue::get(VMContext, VarInfo), | |
| MetadataAsValue::get(VMContext, Expr)}; | |
| IRBuilder<> B = getIRBForDbgInsertion(DL, InsertBB, InsertBefore); | |
| return B.CreateCall(ValueFn, Args); | |
| } | |
| Instruction *DIBuilder::insertLabel( | |
| DILabel *LabelInfo, const DILocation *DL, | |
| BasicBlock *InsertBB, Instruction *InsertBefore) { | |
| assert(LabelInfo && "empty or invalid DILabel* passed to dbg.label"); | |
| assert(DL && "Expected debug loc"); | |
| assert(DL->getScope()->getSubprogram() == | |
| LabelInfo->getScope()->getSubprogram() && | |
| "Expected matching subprograms"); | |
| if (!LabelFn) | |
| LabelFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_label); | |
| trackIfUnresolved(LabelInfo); | |
| Value *Args[] = {MetadataAsValue::get(VMContext, LabelInfo)}; | |
| IRBuilder<> B = getIRBForDbgInsertion(DL, InsertBB, InsertBefore); | |
| return B.CreateCall(LabelFn, Args); | |
| } | |
| void DIBuilder::replaceVTableHolder(DICompositeType *&T, | |
| DIType *VTableHolder) { | |
| { | |
| TypedTrackingMDRef<DICompositeType> N(T); | |
| N->replaceVTableHolder(VTableHolder); | |
| T = N.get(); | |
| } | |
| // If this didn't create a self-reference, just return. | |
| if (T != VTableHolder) | |
| return; | |
| // Look for unresolved operands. T will drop RAUW support, orphaning any | |
| // cycles underneath it. | |
| if (T->isResolved()) | |
| for (const MDOperand &O : T->operands()) | |
| if (auto *N = dyn_cast_or_null<MDNode>(O)) | |
| trackIfUnresolved(N); | |
| } | |
| void DIBuilder::replaceArrays(DICompositeType *&T, DINodeArray Elements, | |
| DINodeArray TParams) { | |
| { | |
| TypedTrackingMDRef<DICompositeType> N(T); | |
| if (Elements) | |
| N->replaceElements(Elements); | |
| if (TParams) | |
| N->replaceTemplateParams(DITemplateParameterArray(TParams)); | |
| T = N.get(); | |
| } | |
| // If T isn't resolved, there's no problem. | |
| if (!T->isResolved()) | |
| return; | |
| // If T is resolved, it may be due to a self-reference cycle. Track the | |
| // arrays explicitly if they're unresolved, or else the cycles will be | |
| // orphaned. | |
| if (Elements) | |
| trackIfUnresolved(Elements.get()); | |
| if (TParams) | |
| trackIfUnresolved(TParams.get()); | |
| } |