llvm/clang/lib/CodeGen/CodeGenModule.cpp

//===--- CodeGenModule.cpp - Emit LLVM Code from ASTs for a Module --------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This coordinates the per-module state used while generating code.
//
//===----------------------------------------------------------------------===//

#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/CharInfo.h"
#include "clang/Basic/CodeGenOptions.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.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/Frontend/OpenMP/OMPIRBuilder.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>

usingnamespaceclang;
usingnamespaceCodeGen;

static llvm::cl::opt<bool> LimitedCoverage(
    "limited-coverage-experimental", llvm::cl::Hidden,
    llvm::cl::desc("Emit limited coverage mapping information (experimental)"));

static const char AnnotationSection[] =;

static CGCXXABI *createCXXABI(CodeGenModule &CGM) {}

static std::unique_ptr<TargetCodeGenInfo>
createTargetCodeGenInfo(CodeGenModule &CGM) {}

const TargetCodeGenInfo &CodeGenModule::getTargetCodeGenInfo() {}

CodeGenModule::CodeGenModule(ASTContext &C,
                             IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS,
                             const HeaderSearchOptions &HSO,
                             const PreprocessorOptions &PPO,
                             const CodeGenOptions &CGO, llvm::Module &M,
                             DiagnosticsEngine &diags,
                             CoverageSourceInfo *CoverageInfo)
    :{}

CodeGenModule::~CodeGenModule() {}

void CodeGenModule::createObjCRuntime() {}

void CodeGenModule::createOpenCLRuntime() {}

void CodeGenModule::createOpenMPRuntime() {}

void CodeGenModule::createCUDARuntime() {}

void CodeGenModule::createHLSLRuntime() {}

void CodeGenModule::addReplacement(StringRef Name, llvm::Constant *C) {}

void CodeGenModule::applyReplacements() {}

void CodeGenModule::addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C) {}

void CodeGenModule::applyGlobalValReplacements() {}

// This is only used in aliases that we created and we know they have a
// linear structure.
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) {}

// Emit a warning if toc-data attribute is requested for global variables that
// have aliases and remove the toc-data attribute.
static void checkAliasForTocData(llvm::GlobalVariable *GVar,
                                 const CodeGenOptions &CodeGenOpts,
                                 DiagnosticsEngine &Diags,
                                 SourceLocation Location) {}

void CodeGenModule::checkAliases() {}

void CodeGenModule::clear() {}

void InstrProfStats::reportDiagnostics(DiagnosticsEngine &Diags,
                                       StringRef MainFile) {}

static std::optional<llvm::GlobalValue::VisibilityTypes>
getLLVMVisibility(clang::LangOptions::VisibilityFromDLLStorageClassKinds K) {}

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) {}

void CodeGenModule::Release() {}

void CodeGenModule::EmitOpenCLMetadata() {}

void CodeGenModule::EmitBackendOptionsMetadata(
    const CodeGenOptions &CodeGenOpts) {}

void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {}

void CodeGenModule::RefreshTypeCacheForClass(const CXXRecordDecl *RD) {}

llvm::MDNode *CodeGenModule::getTBAATypeInfo(QualType QTy) {}

TBAAAccessInfo CodeGenModule::getTBAAAccessInfo(QualType AccessType) {}

TBAAAccessInfo
CodeGenModule::getTBAAVTablePtrAccessInfo(llvm::Type *VTablePtrType) {}

llvm::MDNode *CodeGenModule::getTBAAStructInfo(QualType QTy) {}

llvm::MDNode *CodeGenModule::getTBAABaseTypeInfo(QualType QTy) {}

llvm::MDNode *CodeGenModule::getTBAAAccessTagInfo(TBAAAccessInfo Info) {}

TBAAAccessInfo CodeGenModule::mergeTBAAInfoForCast(TBAAAccessInfo SourceInfo,
                                                   TBAAAccessInfo TargetInfo) {}

TBAAAccessInfo
CodeGenModule::mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
                                                   TBAAAccessInfo InfoB) {}

TBAAAccessInfo
CodeGenModule::mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
                                              TBAAAccessInfo SrcInfo) {}

void CodeGenModule::DecorateInstructionWithTBAA(llvm::Instruction *Inst,
                                                TBAAAccessInfo TBAAInfo) {}

void CodeGenModule::DecorateInstructionWithInvariantGroup(
    llvm::Instruction *I, const CXXRecordDecl *RD) {}

void CodeGenModule::Error(SourceLocation loc, StringRef message) {}

/// ErrorUnsupported - Print out an error that codegen doesn't support the
/// specified stmt yet.
void CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type) {}

/// ErrorUnsupported - Print out an error that codegen doesn't support the
/// specified decl yet.
void CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type) {}

llvm::ConstantInt *CodeGenModule::getSize(CharUnits size) {}

void CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV,
                                        const NamedDecl *D) const {}

static bool shouldAssumeDSOLocal(const CodeGenModule &CGM,
                                 llvm::GlobalValue *GV) {}

void CodeGenModule::setDSOLocal(llvm::GlobalValue *GV) const {}

void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                          GlobalDecl GD) const {}

void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                          const NamedDecl *D) const {}

void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                    GlobalDecl GD) const {}

void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                    const NamedDecl *D) const {}

void CodeGenModule::setGVPropertiesAux(llvm::GlobalValue *GV,
                                       const NamedDecl *D) const {}

static llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel(StringRef S) {}

llvm::GlobalVariable::ThreadLocalMode
CodeGenModule::GetDefaultLLVMTLSModel() const {}

void CodeGenModule::setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) const {}

static std::string getCPUSpecificMangling(const CodeGenModule &CGM,
                                          StringRef Name) {}

static void AppendCPUSpecificCPUDispatchMangling(const CodeGenModule &CGM,
                                                 const CPUSpecificAttr *Attr,
                                                 unsigned CPUIndex,
                                                 raw_ostream &Out) {}

// Returns true if GD is a function decl with internal linkage and
// needs a unique suffix after the mangled name.
static bool isUniqueInternalLinkageDecl(GlobalDecl GD,
                                        CodeGenModule &CGM) {}

static std::string getMangledNameImpl(CodeGenModule &CGM, GlobalDecl GD,
                                      const NamedDecl *ND,
                                      bool OmitMultiVersionMangling = false) {}

void CodeGenModule::UpdateMultiVersionNames(GlobalDecl GD,
                                            const FunctionDecl *FD,
                                            StringRef &CurName) {}

StringRef CodeGenModule::getMangledName(GlobalDecl GD) {}

StringRef CodeGenModule::getBlockMangledName(GlobalDecl GD,
                                             const BlockDecl *BD) {}

const GlobalDecl CodeGenModule::getMangledNameDecl(StringRef Name) {}

llvm::GlobalValue *CodeGenModule::GetGlobalValue(StringRef Name) {}

/// AddGlobalCtor - Add a function to the list that will be called before
/// main() runs.
void CodeGenModule::AddGlobalCtor(llvm::Function *Ctor, int Priority,
                                  unsigned LexOrder,
                                  llvm::Constant *AssociatedData) {}

/// AddGlobalDtor - Add a function to the list that will be called
/// when the module is unloaded.
void CodeGenModule::AddGlobalDtor(llvm::Function *Dtor, int Priority,
                                  bool IsDtorAttrFunc) {}

void CodeGenModule::EmitCtorList(CtorList &Fns, const char *GlobalName) {}

llvm::GlobalValue::LinkageTypes
CodeGenModule::getFunctionLinkage(GlobalDecl GD) {}

llvm::ConstantInt *CodeGenModule::CreateCrossDsoCfiTypeId(llvm::Metadata *MD) {}

llvm::ConstantInt *CodeGenModule::CreateKCFITypeId(QualType T) {}

void CodeGenModule::SetLLVMFunctionAttributes(GlobalDecl GD,
                                              const CGFunctionInfo &Info,
                                              llvm::Function *F, bool IsThunk) {}

static void removeImageAccessQualifier(std::string& TyName) {}

// Returns the address space id that should be produced to the
// kernel_arg_addr_space metadata. This is always fixed to the ids
// as specified in the SPIR 2.0 specification in order to differentiate
// for example in clGetKernelArgInfo() implementation between the address
// spaces with targets without unique mapping to the OpenCL address spaces
// (basically all single AS CPUs).
static unsigned ArgInfoAddressSpace(LangAS AS) {}

void CodeGenModule::GenKernelArgMetadata(llvm::Function *Fn,
                                         const FunctionDecl *FD,
                                         CodeGenFunction *CGF) {}

/// Determines whether the language options require us to model
/// unwind exceptions.  We treat -fexceptions as mandating this
/// except under the fragile ObjC ABI with only ObjC exceptions
/// enabled.  This means, for example, that C with -fexceptions
/// enables this.
static bool hasUnwindExceptions(const LangOptions &LangOpts) {}

static bool requiresMemberFunctionPointerTypeMetadata(CodeGenModule &CGM,
                                                      const CXXMethodDecl *MD) {}

SmallVector<const CXXRecordDecl *, 0>
CodeGenModule::getMostBaseClasses(const CXXRecordDecl *RD) {}

void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
                                                           llvm::Function *F) {}

void CodeGenModule::SetCommonAttributes(GlobalDecl GD, llvm::GlobalValue *GV) {}

bool CodeGenModule::GetCPUAndFeaturesAttributes(GlobalDecl GD,
                                                llvm::AttrBuilder &Attrs,
                                                bool SetTargetFeatures) {}

void CodeGenModule::setNonAliasAttributes(GlobalDecl GD,
                                          llvm::GlobalObject *GO) {}

void CodeGenModule::SetInternalFunctionAttributes(GlobalDecl GD,
                                                  llvm::Function *F,
                                                  const CGFunctionInfo &FI) {}

static void setLinkageForGV(llvm::GlobalValue *GV, const NamedDecl *ND) {}

void CodeGenModule::CreateFunctionTypeMetadataForIcall(const FunctionDecl *FD,
                                                       llvm::Function *F) {}

void CodeGenModule::setKCFIType(const FunctionDecl *FD, llvm::Function *F) {}

static bool allowKCFIIdentifier(StringRef Name) {}

void CodeGenModule::finalizeKCFITypes() {}

void CodeGenModule::SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
                                          bool IsIncompleteFunction,
                                          bool IsThunk) {}

void CodeGenModule::addUsedGlobal(llvm::GlobalValue *GV) {}

void CodeGenModule::addCompilerUsedGlobal(llvm::GlobalValue *GV) {}

void CodeGenModule::addUsedOrCompilerUsedGlobal(llvm::GlobalValue *GV) {}

static void emitUsed(CodeGenModule &CGM, StringRef Name,
                     std::vector<llvm::WeakTrackingVH> &List) {}

void CodeGenModule::emitLLVMUsed() {}

void CodeGenModule::AppendLinkerOptions(StringRef Opts) {}

void CodeGenModule::AddDetectMismatch(StringRef Name, StringRef Value) {}

void CodeGenModule::AddDependentLib(StringRef Lib) {}

/// Add link options implied by the given module, including modules
/// it depends on, using a postorder walk.
static void addLinkOptionsPostorder(CodeGenModule &CGM, Module *Mod,
                                    SmallVectorImpl<llvm::MDNode *> &Metadata,
                                    llvm::SmallPtrSet<Module *, 16> &Visited) {}

void CodeGenModule::EmitModuleInitializers(clang::Module *Primary) {}

void CodeGenModule::EmitModuleLinkOptions() {}

void CodeGenModule::EmitDeferred() {}

void CodeGenModule::EmitVTablesOpportunistically() {}

void CodeGenModule::EmitGlobalAnnotations() {}

llvm::Constant *CodeGenModule::EmitAnnotationString(StringRef Str) {}

llvm::Constant *CodeGenModule::EmitAnnotationUnit(SourceLocation Loc) {}

llvm::Constant *CodeGenModule::EmitAnnotationLineNo(SourceLocation L) {}

llvm::Constant *CodeGenModule::EmitAnnotationArgs(const AnnotateAttr *Attr) {}

llvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV,
                                                const AnnotateAttr *AA,
                                                SourceLocation L) {}

void CodeGenModule::AddGlobalAnnotations(const ValueDecl *D,
                                         llvm::GlobalValue *GV) {}

bool CodeGenModule::isInNoSanitizeList(SanitizerMask Kind, llvm::Function *Fn,
                                       SourceLocation Loc) const {}

bool CodeGenModule::isInNoSanitizeList(SanitizerMask Kind,
                                       llvm::GlobalVariable *GV,
                                       SourceLocation Loc, QualType Ty,
                                       StringRef Category) const {}

bool CodeGenModule::imbueXRayAttrs(llvm::Function *Fn, SourceLocation Loc,
                                   StringRef Category) const {}

ProfileList::ExclusionType
CodeGenModule::isFunctionBlockedByProfileList(llvm::Function *Fn,
                                              SourceLocation Loc) const {}

ProfileList::ExclusionType
CodeGenModule::isFunctionBlockedFromProfileInstr(llvm::Function *Fn,
                                                 SourceLocation Loc) const {}

bool CodeGenModule::MustBeEmitted(const ValueDecl *Global) {}

bool CodeGenModule::MayBeEmittedEagerly(const ValueDecl *Global) {}

ConstantAddress CodeGenModule::GetAddrOfMSGuidDecl(const MSGuidDecl *GD) {}

ConstantAddress CodeGenModule::GetAddrOfUnnamedGlobalConstantDecl(
    const UnnamedGlobalConstantDecl *GCD) {}

ConstantAddress CodeGenModule::GetAddrOfTemplateParamObject(
    const TemplateParamObjectDecl *TPO) {}

ConstantAddress CodeGenModule::GetWeakRefReference(const ValueDecl *VD) {}

template <typename AttrT> static bool hasImplicitAttr(const ValueDecl *D) {}

bool CodeGenModule::shouldEmitCUDAGlobalVar(const VarDecl *Global) const {}

void CodeGenModule::EmitGlobal(GlobalDecl GD) {}

// Check if T is a class type with a destructor that's not dllimport.
static bool HasNonDllImportDtor(QualType T) {}

namespace {
  struct FunctionIsDirectlyRecursive
      : public ConstStmtVisitor<FunctionIsDirectlyRecursive, bool> {};

  // Make sure we're not referencing non-imported vars or functions.
  struct DLLImportFunctionVisitor
      : public RecursiveASTVisitor<DLLImportFunctionVisitor> {};
}

// isTriviallyRecursive - Check if this function calls another
// decl that, because of the asm attribute or the other decl being a builtin,
// ends up pointing to itself.
bool
CodeGenModule::isTriviallyRecursive(const FunctionDecl *FD) {}

bool CodeGenModule::shouldEmitFunction(GlobalDecl GD) {}

bool CodeGenModule::shouldOpportunisticallyEmitVTables() {}

void CodeGenModule::EmitMultiVersionFunctionDefinition(GlobalDecl GD,
                                                       llvm::GlobalValue *GV) {}

void CodeGenModule::EmitGlobalDefinition(GlobalDecl GD, llvm::GlobalValue *GV) {}

static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                      llvm::Function *NewFn);

static unsigned
TargetMVPriority(const TargetInfo &TI,
                 const CodeGenFunction::MultiVersionResolverOption &RO) {}

// Multiversion functions should be at most 'WeakODRLinkage' so that a different
// TU can forward declare the function without causing problems.  Particularly
// in the cases of CPUDispatch, this causes issues. This also makes sure we
// work with internal linkage functions, so that the same function name can be
// used with internal linkage in multiple TUs.
llvm::GlobalValue::LinkageTypes getMultiversionLinkage(CodeGenModule &CGM,
                                                       GlobalDecl GD) {}

void CodeGenModule::emitMultiVersionFunctions() {}

static void replaceDeclarationWith(llvm::GlobalValue *Old,
                                   llvm::Constant *New) {}

void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl GD) {}

/// Adds a declaration to the list of multi version functions if not present.
void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {}

/// If a dispatcher for the specified mangled name is not in the module, create
/// and return it. The dispatcher is either an llvm Function with the specified
/// type, or a global ifunc.
llvm::Constant *CodeGenModule::GetOrCreateMultiVersionResolver(GlobalDecl GD) {}

bool CodeGenModule::shouldDropDLLAttribute(const Decl *D,
                                           const llvm::GlobalValue *GV) const {}

/// GetOrCreateLLVMFunction - If the specified mangled name is not in the
/// module, create and return an llvm Function with the specified type. If there
/// is something in the module with the specified name, return it potentially
/// bitcasted to the right type.
///
/// If D is non-null, it specifies a decl that correspond to this.  This is used
/// to set the attributes on the function when it is first created.
llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(
    StringRef MangledName, llvm::Type *Ty, GlobalDecl GD, bool ForVTable,
    bool DontDefer, bool IsThunk, llvm::AttributeList ExtraAttrs,
    ForDefinition_t IsForDefinition) {}

/// GetAddrOfFunction - Return the address of the given function.  If Ty is
/// non-null, then this function will use the specified type if it has to
/// create it (this occurs when we see a definition of the function).
llvm::Constant *
CodeGenModule::GetAddrOfFunction(GlobalDecl GD, llvm::Type *Ty, bool ForVTable,
                                 bool DontDefer,
                                 ForDefinition_t IsForDefinition) {}

llvm::Constant *CodeGenModule::GetFunctionStart(const ValueDecl *Decl) {}

static const FunctionDecl *
GetRuntimeFunctionDecl(ASTContext &C, StringRef Name) {}

/// CreateRuntimeFunction - Create a new runtime function with the specified
/// type and name.
llvm::FunctionCallee
CodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, StringRef Name,
                                     llvm::AttributeList ExtraAttrs, bool Local,
                                     bool AssumeConvergent) {}

/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module,
/// create and return an llvm GlobalVariable with the specified type and address
/// space. If there is something in the module with the specified name, return
/// it potentially bitcasted to the right type.
///
/// If D is non-null, it specifies a decl that correspond to this.  This is used
/// to set the attributes on the global when it is first created.
///
/// If IsForDefinition is true, it is guaranteed that an actual global with
/// type Ty will be returned, not conversion of a variable with the same
/// mangled name but some other type.
llvm::Constant *
CodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, llvm::Type *Ty,
                                     LangAS AddrSpace, const VarDecl *D,
                                     ForDefinition_t IsForDefinition) {}

llvm::Constant *
CodeGenModule::GetAddrOfGlobal(GlobalDecl GD, ForDefinition_t IsForDefinition) {}

llvm::GlobalVariable *CodeGenModule::CreateOrReplaceCXXRuntimeVariable(
    StringRef Name, llvm::Type *Ty, llvm::GlobalValue::LinkageTypes Linkage,
    llvm::Align Alignment) {}

/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
/// given global variable.  If Ty is non-null and if the global doesn't exist,
/// then it will be created with the specified type instead of whatever the
/// normal requested type would be. If IsForDefinition is true, it is guaranteed
/// that an actual global with type Ty will be returned, not conversion of a
/// variable with the same mangled name but some other type.
llvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D,
                                                  llvm::Type *Ty,
                                           ForDefinition_t IsForDefinition) {}

/// CreateRuntimeVariable - Create a new runtime global variable with the
/// specified type and name.
llvm::Constant *
CodeGenModule::CreateRuntimeVariable(llvm::Type *Ty,
                                     StringRef Name) {}

void CodeGenModule::EmitTentativeDefinition(const VarDecl *D) {}

void CodeGenModule::EmitExternalDeclaration(const DeclaratorDecl *D) {}

CharUnits CodeGenModule::GetTargetTypeStoreSize(llvm::Type *Ty) const {}

LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {}

LangAS CodeGenModule::GetGlobalConstantAddressSpace() const {}

// In address space agnostic languages, string literals are in default address
// space in AST. However, certain targets (e.g. amdgcn) request them to be
// emitted in constant address space in LLVM IR. To be consistent with other
// parts of AST, string literal global variables in constant address space
// need to be casted to default address space before being put into address
// map and referenced by other part of CodeGen.
// In OpenCL, string literals are in constant address space in AST, therefore
// they should not be casted to default address space.
static llvm::Constant *
castStringLiteralToDefaultAddressSpace(CodeGenModule &CGM,
                                       llvm::GlobalVariable *GV) {}

template<typename SomeDecl>
void CodeGenModule::MaybeHandleStaticInExternC(const SomeDecl *D,
                                               llvm::GlobalValue *GV) {}

static bool shouldBeInCOMDAT(CodeGenModule &CGM, const Decl &D) {}

bool CodeGenModule::supportsCOMDAT() const {}

void CodeGenModule::maybeSetTrivialComdat(const Decl &D,
                                          llvm::GlobalObject &GO) {}

const ABIInfo &CodeGenModule::getABIInfo() {}

/// Pass IsTentative as true if you want to create a tentative definition.
void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
                                            bool IsTentative) {}

void CodeGenModule::EmitExternalVarDeclaration(const VarDecl *D) {}

void CodeGenModule::EmitExternalFunctionDeclaration(const FunctionDecl *FD) {}

static bool isVarDeclStrongDefinition(const ASTContext &Context,
                                      CodeGenModule &CGM, const VarDecl *D,
                                      bool NoCommon) {}

llvm::GlobalValue::LinkageTypes
CodeGenModule::getLLVMLinkageForDeclarator(const DeclaratorDecl *D,
                                           GVALinkage Linkage) {}

llvm::GlobalValue::LinkageTypes
CodeGenModule::getLLVMLinkageVarDefinition(const VarDecl *VD) {}

/// Replace the uses of a function that was declared with a non-proto type.
/// We want to silently drop extra arguments from call sites
static void replaceUsesOfNonProtoConstant(llvm::Constant *old,
                                          llvm::Function *newFn) {}

/// 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.
static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                      llvm::Function *NewFn) {}

void CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {}

void CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD,
                                                 llvm::GlobalValue *GV) {}

void CodeGenModule::EmitAliasDefinition(GlobalDecl GD) {}

void CodeGenModule::emitIFuncDefinition(GlobalDecl GD) {}

llvm::Function *CodeGenModule::getIntrinsic(unsigned IID,
                                            ArrayRef<llvm::Type*> Tys) {}

static llvm::StringMapEntry<llvm::GlobalVariable *> &
GetConstantCFStringEntry(llvm::StringMap<llvm::GlobalVariable *> &Map,
                         const StringLiteral *Literal, bool TargetIsLSB,
                         bool &IsUTF16, unsigned &StringLength) {}

ConstantAddress
CodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) {}

bool CodeGenModule::getExpressionLocationsEnabled() const {}

QualType CodeGenModule::getObjCFastEnumerationStateType() {}

llvm::Constant *
CodeGenModule::GetConstantArrayFromStringLiteral(const StringLiteral *E) {}

static llvm::GlobalVariable *
GenerateStringLiteral(llvm::Constant *C, llvm::GlobalValue::LinkageTypes LT,
                      CodeGenModule &CGM, StringRef GlobalName,
                      CharUnits Alignment) {}

/// GetAddrOfConstantStringFromLiteral - Return a pointer to a
/// constant array for the given string literal.
ConstantAddress
CodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
                                                  StringRef Name) {}

/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
/// array for the given ObjCEncodeExpr node.
ConstantAddress
CodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) {}

/// GetAddrOfConstantCString - Returns a pointer to a character array containing
/// the literal and a terminating '\0' character.
/// The result has pointer to array type.
ConstantAddress CodeGenModule::GetAddrOfConstantCString(
    const std::string &Str, const char *GlobalName) {}

ConstantAddress CodeGenModule::GetAddrOfGlobalTemporary(
    const MaterializeTemporaryExpr *E, const Expr *Init) {}

/// EmitObjCPropertyImplementations - Emit information for synthesized
/// properties for an implementation.
void CodeGenModule::EmitObjCPropertyImplementations(const
                                                    ObjCImplementationDecl *D) {}

static bool needsDestructMethod(ObjCImplementationDecl *impl) {}

static bool AllTrivialInitializers(CodeGenModule &CGM,
                                   ObjCImplementationDecl *D) {}

/// EmitObjCIvarInitializations - Emit information for ivar initialization
/// for an implementation.
void CodeGenModule::EmitObjCIvarInitializations(ObjCImplementationDecl *D) {}

// EmitLinkageSpec - Emit all declarations in a linkage spec.
void CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) {}

void CodeGenModule::EmitTopLevelStmt(const TopLevelStmtDecl *D) {}

void CodeGenModule::EmitDeclContext(const DeclContext *DC) {}

/// EmitTopLevelDecl - Emit code for a single top level declaration.
void CodeGenModule::EmitTopLevelDecl(Decl *D) {}

void CodeGenModule::AddDeferredUnusedCoverageMapping(Decl *D) {}

void CodeGenModule::ClearUnusedCoverageMapping(const Decl *D) {}

void CodeGenModule::EmitDeferredUnusedCoverageMappings() {}

void CodeGenModule::EmitMainVoidAlias() {}

/// Turns the given pointer into a constant.
static llvm::Constant *GetPointerConstant(llvm::LLVMContext &Context,
                                          const void *Ptr) {}

static void EmitGlobalDeclMetadata(CodeGenModule &CGM,
                                   llvm::NamedMDNode *&GlobalMetadata,
                                   GlobalDecl D,
                                   llvm::GlobalValue *Addr) {}

bool CodeGenModule::CheckAndReplaceExternCIFuncs(llvm::GlobalValue *Elem,
                                                 llvm::GlobalValue *CppFunc) {}

/// For each function which is declared within an extern "C" region and marked
/// as 'used', but has internal linkage, create an alias from the unmangled
/// name to the mangled name if possible. People expect to be able to refer
/// to such functions with an unmangled name from inline assembly within the
/// same translation unit.
void CodeGenModule::EmitStaticExternCAliases() {}

bool CodeGenModule::lookupRepresentativeDecl(StringRef MangledName,
                                             GlobalDecl &Result) const {}

/// Emits metadata nodes associating all the global values in the
/// current module with the Decls they came from.  This is useful for
/// projects using IR gen as a subroutine.
///
/// Since there's currently no way to associate an MDNode directly
/// with an llvm::GlobalValue, we create a global named metadata
/// with the name 'clang.global.decl.ptrs'.
void CodeGenModule::EmitDeclMetadata() {}

/// Emits metadata nodes for all the local variables in the current
/// function.
void CodeGenFunction::EmitDeclMetadata() {}

void CodeGenModule::EmitVersionIdentMetadata() {}

void CodeGenModule::EmitCommandLineMetadata() {}

void CodeGenModule::EmitCoverageFile() {}

llvm::Constant *CodeGenModule::GetAddrOfRTTIDescriptor(QualType Ty,
                                                       bool ForEH) {}

void CodeGenModule::EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D) {}

llvm::Metadata *
CodeGenModule::CreateMetadataIdentifierImpl(QualType T, MetadataTypeMap &Map,
                                            StringRef Suffix) {}

llvm::Metadata *CodeGenModule::CreateMetadataIdentifierForType(QualType T) {}

llvm::Metadata *
CodeGenModule::CreateMetadataIdentifierForVirtualMemPtrType(QualType T) {}

// Generalize pointer types to a void pointer with the qualifiers of the
// originally pointed-to type, e.g. 'const char *' and 'char * const *'
// generalize to 'const void *' while 'char *' and 'const char **' generalize to
// 'void *'.
static QualType GeneralizeType(ASTContext &Ctx, QualType Ty) {}

// Apply type generalization to a FunctionType's return and argument types
static QualType GeneralizeFunctionType(ASTContext &Ctx, QualType Ty) {}

llvm::Metadata *CodeGenModule::CreateMetadataIdentifierGeneralized(QualType T) {}

/// Returns whether this module needs the "all-vtables" type identifier.
bool CodeGenModule::NeedAllVtablesTypeId() const {}

void CodeGenModule::AddVTableTypeMetadata(llvm::GlobalVariable *VTable,
                                          CharUnits Offset,
                                          const CXXRecordDecl *RD) {}

llvm::SanitizerStatReport &CodeGenModule::getSanStats() {}

llvm::Value *
CodeGenModule::createOpenCLIntToSamplerConversion(const Expr *E,
                                                  CodeGenFunction &CGF) {}

CharUnits CodeGenModule::getNaturalPointeeTypeAlignment(
    QualType T, LValueBaseInfo *BaseInfo, TBAAAccessInfo *TBAAInfo) {}

CharUnits CodeGenModule::getNaturalTypeAlignment(QualType T,
                                                 LValueBaseInfo *BaseInfo,
                                                 TBAAAccessInfo *TBAAInfo,
                                                 bool forPointeeType) {}

bool CodeGenModule::stopAutoInit() {}

void CodeGenModule::printPostfixForExternalizedDecl(llvm::raw_ostream &OS,
                                                    const Decl *D) const {}

void CodeGenModule::moveLazyEmissionStates(CodeGenModule *NewBuilder) {}