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clang: lib/CodeGen/CodeGenModule.cpp File Reference

#include "CodeGenModule.h"
#include "ABIInfo.h"
#include "CGBlocks.h"
#include "CGCUDARuntime.h"
#include "CGCXXABI.h"
#include "CGCall.h"
#include "CGDebugInfo.h"
#include "CGHLSLRuntime.h"
#include "CGObjCRuntime.h"
#include "CGOpenCLRuntime.h"
#include "CGOpenMPRuntime.h"
#include "CGOpenMPRuntimeGPU.h"
#include "CodeGenFunction.h"
#include "CodeGenPGO.h"
#include "ConstantEmitter.h"
#include "CoverageMappingGen.h"
#include "TargetInfo.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTLambda.h"
#include "clang/AST/CharUnits.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/Module.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Version.h"
#include "clang/CodeGen/BackendUtil.h"
#include "clang/CodeGen/ConstantInitBuilder.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/IR/AttributeMask.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/ProfileSummary.h"
#include "llvm/ProfileData/InstrProfReader.h"
#include "llvm/ProfileData/SampleProf.h"
#include "llvm/Support/CRC.h"
#include "llvm/Support/CodeGen.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/TimeProfiler.h"
#include "llvm/Support/xxhash.h"
#include "llvm/TargetParser/RISCVISAInfo.h"
#include "llvm/TargetParser/Triple.h"
#include "llvm/TargetParser/X86TargetParser.h"
#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include <optional>
#include <set>

Go to the source code of this file.

static llvm::cl::opt< bool >  LimitedCoverage ("limited-coverage-experimental", llvm::cl::Hidden, llvm::cl::desc("Emit limited coverage mapping information (experimental)"))   static CGCXXABI *  createCXXABI (CodeGenModule &CGM)   static std::unique_ptr< TargetCodeGenInfo >  createTargetCodeGenInfo (CodeGenModule &CGM)   static const llvm::GlobalValue *  getAliasedGlobal (const llvm::GlobalValue *GV)   static bool  checkAliasedGlobal (const ASTContext &Context, DiagnosticsEngine &Diags, SourceLocation Location, bool IsIFunc, const llvm::GlobalValue *Alias, const llvm::GlobalValue *&GV, const llvm::MapVector< GlobalDecl, StringRef > &MangledDeclNames, SourceRange AliasRange)   static void  checkAliasForTocData (llvm::GlobalVariable *GVar, const CodeGenOptions &CodeGenOpts, DiagnosticsEngine &Diags, SourceLocation Location)   static std::optional< llvm::GlobalValue::VisibilityTypes >  getLLVMVisibility (clang::LangOptions::VisibilityFromDLLStorageClassKinds K)   static void  setLLVMVisibility (llvm::GlobalValue &GV, std::optional< llvm::GlobalValue::VisibilityTypes > V)   static void  setVisibilityFromDLLStorageClass (const clang::LangOptions &LO, llvm::Module &M)   static bool  isStackProtectorOn (const LangOptions &LangOpts, const llvm::Triple &Triple, clang::LangOptions::StackProtectorMode Mode)   static bool  shouldAssumeDSOLocal (const CodeGenModule &CGM, llvm::GlobalValue *GV)   static llvm::GlobalVariable::ThreadLocalMode  GetLLVMTLSModel (StringRef S)   static std::string  getCPUSpecificMangling (const CodeGenModule &CGM, StringRef Name)   static void  AppendCPUSpecificCPUDispatchMangling (const CodeGenModule &CGM, const CPUSpecificAttr *Attr, unsigned CPUIndex, raw_ostream &Out)   static bool  isUniqueInternalLinkageDecl (GlobalDecl GD, CodeGenModule &CGM)   static std::string  getMangledNameImpl (CodeGenModule &CGM, GlobalDecl GD, const NamedDecl *ND, bool OmitMultiVersionMangling=false)   static void  removeImageAccessQualifier (std::string &TyName)   static unsigned  ArgInfoAddressSpace (LangAS AS)   static bool  hasUnwindExceptions (const LangOptions &LangOpts)   Determines whether the language options require us to model unwind exceptions.
  static bool  requiresMemberFunctionPointerTypeMetadata (CodeGenModule &CGM, const CXXMethodDecl *MD)   static void  setLinkageForGV (llvm::GlobalValue *GV, const NamedDecl *ND)   static bool  allowKCFIIdentifier (StringRef Name)   static void  emitUsed (CodeGenModule &CGM, StringRef Name, std::vector< llvm::WeakTrackingVH > &List)   static void  addLinkOptionsPostorder (CodeGenModule &CGM, Module *Mod, SmallVectorImpl< llvm::MDNode * > &Metadata, llvm::SmallPtrSet< Module *, 16 > &Visited)   Add link options implied by the given module, including modules it depends on, using a postorder walk.
  template<typename AttrT > static bool  hasImplicitAttr (const ValueDecl *D)   static bool  HasNonDllImportDtor (QualType T)   static void  ReplaceUsesOfNonProtoTypeWithRealFunction (llvm::GlobalValue *Old, llvm::Function *NewFn)   ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we implement a function with no prototype, e.g.
  static uint64_t  getFMVPriority (const TargetInfo &TI, const CodeGenFunction::FMVResolverOption &RO)   static llvm::GlobalValue::LinkageTypes  getMultiversionLinkage (CodeGenModule &CGM, GlobalDecl GD)   static void  replaceDeclarationWith (llvm::GlobalValue *Old, llvm::Constant *New)   static const FunctionDecl *  GetRuntimeFunctionDecl (ASTContext &C, StringRef Name)   static void  setWindowsItaniumDLLImport (CodeGenModule &CGM, bool Local, llvm::Function *F, StringRef Name)   static llvm::Constant *  castStringLiteralToDefaultAddressSpace (CodeGenModule &CGM, llvm::GlobalVariable *GV)   static bool  shouldBeInCOMDAT (CodeGenModule &CGM, const Decl &D)   static bool  isVarDeclStrongDefinition (const ASTContext &Context, CodeGenModule &CGM, const VarDecl *D, bool NoCommon)   static void  replaceUsesOfNonProtoConstant (llvm::Constant *old, llvm::Function *newFn)   Replace the uses of a function that was declared with a non-proto type.
  static llvm::StringMapEntry< llvm::GlobalVariable * > &  GetConstantCFStringEntry (llvm::StringMap< llvm::GlobalVariable * > &Map, const StringLiteral *Literal, bool TargetIsLSB, bool &IsUTF16, unsigned &StringLength)   static llvm::GlobalVariable *  GenerateStringLiteral (llvm::Constant *C, llvm::GlobalValue::LinkageTypes LT, CodeGenModule &CGM, StringRef GlobalName, CharUnits Alignment)   static bool  needsDestructMethod (ObjCImplementationDecl *impl)   static bool  AllTrivialInitializers (CodeGenModule &CGM, ObjCImplementationDecl *D)   static llvm::Constant *  GetPointerConstant (llvm::LLVMContext &Context, const void *Ptr)   Turns the given pointer into a constant.
  static void  EmitGlobalDeclMetadata (CodeGenModule &CGM, llvm::NamedMDNode *&GlobalMetadata, GlobalDecl D, llvm::GlobalValue *Addr)   static QualType  GeneralizeType (ASTContext &Ctx, QualType Ty)   static QualType  GeneralizeFunctionType (ASTContext &Ctx, QualType Ty)   ◆ addLinkOptionsPostorder()

Add link options implied by the given module, including modules it depends on, using a postorder walk.

Definition at line 3119 of file CodeGenModule.cpp.

References addLinkOptionsPostorder(), clang::CodeGen::TargetCodeGenInfo::getDependentLibraryOption(), clang::CodeGen::CodeGenModule::getLLVMContext(), clang::CodeGen::CodeGenModule::getTarget(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::TargetInfo::getTriple(), clang::Module::Imports, clang::Module::LinkLibraries, clang::Module::Parent, clang::Module::UseExportAsModuleLinkName, and Visited.

Referenced by addLinkOptionsPostorder().

◆ allowKCFIIdentifier() static bool allowKCFIIdentifier ( StringRef  Name ) static ◆ AllTrivialInitializers() ◆ AppendCPUSpecificCPUDispatchMangling() static void AppendCPUSpecificCPUDispatchMangling ( const CodeGenModule &  CGM, const CPUSpecificAttr *  Attr, unsigned  CPUIndex, raw_ostream &  Out  ) static ◆ ArgInfoAddressSpace() ◆ castStringLiteralToDefaultAddressSpace() static llvm::Constant * castStringLiteralToDefaultAddressSpace ( CodeGenModule &  CGM, llvm::GlobalVariable *  GV  ) static ◆ checkAliasedGlobal() ◆ checkAliasForTocData() ◆ createCXXABI() ◆ createTargetCodeGenInfo()

Definition at line 108 of file CodeGenModule.cpp.

References clang::CodeGen::createAArch64TargetCodeGenInfo(), clang::CodeGen::createAIXTargetCodeGenInfo(), clang::CodeGen::createAMDGPUTargetCodeGenInfo(), clang::CodeGen::createARCTargetCodeGenInfo(), clang::CodeGen::createARMTargetCodeGenInfo(), clang::CodeGen::createAVRTargetCodeGenInfo(), clang::CodeGen::createBPFTargetCodeGenInfo(), clang::CodeGen::createCommonSPIRTargetCodeGenInfo(), clang::CodeGen::createCSKYTargetCodeGenInfo(), clang::CodeGen::createDefaultTargetCodeGenInfo(), clang::CodeGen::createDirectXTargetCodeGenInfo(), clang::CodeGen::createHexagonTargetCodeGenInfo(), clang::CodeGen::createLanaiTargetCodeGenInfo(), clang::CodeGen::createLoongArchTargetCodeGenInfo(), clang::CodeGen::createM68kTargetCodeGenInfo(), clang::CodeGen::createMIPSTargetCodeGenInfo(), clang::CodeGen::createMSP430TargetCodeGenInfo(), clang::CodeGen::createNVPTXTargetCodeGenInfo(), clang::CodeGen::createPNaClTargetCodeGenInfo(), clang::CodeGen::createPPC32TargetCodeGenInfo(), clang::CodeGen::createPPC64_SVR4_TargetCodeGenInfo(), clang::CodeGen::createPPC64TargetCodeGenInfo(), clang::CodeGen::createRISCVTargetCodeGenInfo(), clang::CodeGen::createSparcV8TargetCodeGenInfo(), clang::CodeGen::createSparcV9TargetCodeGenInfo(), clang::CodeGen::createSPIRVTargetCodeGenInfo(), clang::CodeGen::createSystemZTargetCodeGenInfo(), clang::CodeGen::createTCETargetCodeGenInfo(), clang::CodeGen::createVETargetCodeGenInfo(), clang::CodeGen::createWebAssemblyTargetCodeGenInfo(), clang::CodeGen::createWindowsAArch64TargetCodeGenInfo(), clang::CodeGen::createWindowsARMTargetCodeGenInfo(), clang::CodeGen::createWindowsMIPSTargetCodeGenInfo(), clang::CodeGen::createWinX86_32TargetCodeGenInfo(), clang::CodeGen::createWinX86_64TargetCodeGenInfo(), clang::CodeGen::createX86_32TargetCodeGenInfo(), clang::CodeGen::createX86_64TargetCodeGenInfo(), clang::CodeGen::createXCoreTargetCodeGenInfo(), clang::CodeGenOptions::FloatABI, clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getTarget(), and clang::TargetInfo::getTriple().

Referenced by clang::CodeGen::CodeGenModule::getTargetCodeGenInfo().

◆ EmitGlobalDeclMetadata() static void EmitGlobalDeclMetadata ( CodeGenModule &  CGM, llvm::NamedMDNode *&  GlobalMetadata, GlobalDecl  D, llvm::GlobalValue *  Addr  ) static ◆ emitUsed() static void emitUsed ( CodeGenModule &  CGM, StringRef  Name, std::vector< llvm::WeakTrackingVH > &  List  ) static ◆ GeneralizeFunctionType() ◆ GeneralizeType() ◆ GenerateStringLiteral() static llvm::GlobalVariable * GenerateStringLiteral ( llvm::Constant *  C, llvm::GlobalValue::LinkageTypes  LT, CodeGenModule &  CGM, StringRef  GlobalName, CharUnits  Alignment  ) static

Definition at line 6587 of file CodeGenModule.cpp.

References clang::C, clang::CharUnits::getAsAlign(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::GetGlobalConstantAddressSpace(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CodeGenModule::getModule(), clang::ASTContext::getTargetAddressSpace(), LT, clang::CodeGen::CodeGenModule::setDSOLocal(), and clang::CodeGen::CodeGenModule::supportsCOMDAT().

Referenced by clang::CodeGen::CodeGenModule::GetAddrOfConstantCString(), and clang::CodeGen::CodeGenModule::GetAddrOfConstantStringFromLiteral().

◆ getAliasedGlobal() static const llvm::GlobalValue * getAliasedGlobal ( const llvm::GlobalValue *  GV ) static ◆ GetConstantCFStringEntry() static llvm::StringMapEntry< llvm::GlobalVariable * > & GetConstantCFStringEntry ( llvm::StringMap< llvm::GlobalVariable * > &  Map, const StringLiteral *  Literal, bool  TargetIsLSB, bool &  IsUTF16, unsigned &  StringLength  ) static ◆ getCPUSpecificMangling() static std::string getCPUSpecificMangling ( const CodeGenModule &  CGM, StringRef  Name  ) static ◆ getFMVPriority() static uint64_t getFMVPriority ( const TargetInfo &  TI, const CodeGenFunction::FMVResolverOption &  RO  ) static ◆ GetLLVMTLSModel() static llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel ( StringRef  S ) static ◆ getLLVMVisibility() ◆ getMangledNameImpl()

Definition at line 1877 of file CodeGenModule.cpp.

References clang::CodeGen::ABIInfo::appendAttributeMangling(), AppendCPUSpecificCPUDispatchMangling(), clang::CC_X86RegCall, clang::CPUDispatch, clang::CPUSpecific, clang::CodeGen::TargetCodeGenInfo::getABIInfo(), clang::FunctionType::getCallConv(), clang::CodeGen::CodeGenModule::getCodeGenOpts(), clang::CodeGen::CodeGenModule::getContext(), clang::CodeGen::CodeGenModule::getCXXABI(), clang::NamedDecl::getIdentifier(), clang::GlobalDecl::getKernelReferenceKind(), clang::CodeGen::CodeGenModule::getLangOpts(), clang::CodeGen::CGCXXABI::getMangleContext(), clang::CodeGen::CodeGenModule::getModuleNameHash(), clang::GlobalDecl::getMultiVersionIndex(), clang::IdentifierInfo::getName(), clang::CodeGen::CodeGenModule::getTargetCodeGenInfo(), clang::GlobalDecl::getWithDecl(), isUniqueInternalLinkageDecl(), clang::MangleContext::mangleName(), clang::MangleContext::needsUniqueInternalLinkageNames(), clang::None, clang::CodeGen::CodeGenModule::printPostfixForExternalizedDecl(), clang::ASTContext::shouldExternalize(), clang::MangleContext::shouldMangleDeclName(), clang::Stub, clang::Target, clang::TargetClones, and clang::TargetVersion.

Referenced by clang::CodeGen::CodeGenModule::getMangledName().

◆ getMultiversionLinkage() ◆ GetPointerConstant() static llvm::Constant * GetPointerConstant ( llvm::LLVMContext &  Context, const void *  Ptr  ) static ◆ GetRuntimeFunctionDecl() ◆ hasImplicitAttr()

template<typename AttrT >

◆ HasNonDllImportDtor() ◆ hasUnwindExceptions() ◆ isStackProtectorOn() ◆ isUniqueInternalLinkageDecl() ◆ isVarDeclStrongDefinition()

Definition at line 5798 of file CodeGenModule.cpp.

References D, clang::RecordDecl::fields(), clang::CharUnits::fromQuantity(), clang::Type::getAs(), clang::TargetInfo::getCXXABI(), clang::ASTContext::getTargetInfo(), clang::TargetInfo::getTriple(), clang::ValueDecl::getType(), clang::ASTContext::getTypeAlignIfKnown(), clang::Decl::hasAttr(), clang::ASTContext::isAlignmentRequired(), clang::TargetCXXABI::isMicrosoft(), shouldBeInCOMDAT(), and clang::ASTContext::toBits().

Referenced by clang::CodeGen::CodeGenModule::getLLVMLinkageForDeclarator().

◆ LimitedCoverage() ◆ needsDestructMethod() ◆ removeImageAccessQualifier() static void removeImageAccessQualifier ( std::string &  TyName ) static ◆ replaceDeclarationWith() static void replaceDeclarationWith ( llvm::GlobalValue *  Old, llvm::Constant *  New  ) static

Definition at line 4407 of file CodeGenModule.cpp.

◆ replaceUsesOfNonProtoConstant() static void replaceUsesOfNonProtoConstant ( llvm::Constant *  old, llvm::Function *  newFn  ) static ◆ ReplaceUsesOfNonProtoTypeWithRealFunction() static void ReplaceUsesOfNonProtoTypeWithRealFunction ( llvm::GlobalValue *  Old, llvm::Function *  NewFn  ) static

ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we implement a function with no prototype, e.g.

"int foo() {}". If there are existing call uses of the old function in the module, this adjusts them to call the new function directly.

This is not just a cleanup: the always_inline pass requires direct calls to functions to be able to inline them. If there is a bitcast in the way, it won't inline them. Instcombine normally deletes these calls, but it isn't run at -O0.

Definition at line 6067 of file CodeGenModule.cpp.

References replaceUsesOfNonProtoConstant().

◆ requiresMemberFunctionPointerTypeMetadata() ◆ setLinkageForGV() static void setLinkageForGV ( llvm::GlobalValue *  GV, const NamedDecl *  ND  ) static ◆ setLLVMVisibility() static void setLLVMVisibility ( llvm::GlobalValue &  GV, std::optional< llvm::GlobalValue::VisibilityTypes >  V  ) static ◆ setVisibilityFromDLLStorageClass() static void setVisibilityFromDLLStorageClass ( const clang::LangOptions &  LO, llvm::Module &  M  ) static ◆ setWindowsItaniumDLLImport() static void setWindowsItaniumDLLImport ( CodeGenModule &  CGM, bool  Local, llvm::Function *  F, StringRef  Name  ) static ◆ shouldAssumeDSOLocal() static bool shouldAssumeDSOLocal ( const CodeGenModule &  CGM, llvm::GlobalValue *  GV  ) static ◆ shouldBeInCOMDAT()

Definition at line 5462 of file CodeGenModule.cpp.

References D, clang::CodeGen::CodeGenModule::getContext(), clang::ASTContext::GetGVALinkageForFunction(), clang::ASTContext::GetGVALinkageForVariable(), clang::GVA_AvailableExternally, clang::GVA_DiscardableODR, clang::GVA_Internal, clang::GVA_StrongExternal, clang::GVA_StrongODR, clang::Decl::hasAttr(), and clang::CodeGen::CodeGenModule::supportsCOMDAT().

Referenced by isVarDeclStrongDefinition(), and clang::CodeGen::CodeGenModule::maybeSetTrivialComdat().

◆ AnnotationSection const char AnnotationSection[] = "llvm.metadata" static

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