/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/lib/CodeGen/CodeGenModule.cpp

Bug Summary

File:	build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/lib/CodeGen/CodeGenModule.cpp
Warning:	line 3767, column 27 Called C++ object pointer is null

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name CodeGenModule.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/build-llvm -resource-dir /usr/lib/llvm-15/lib/clang/15.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/clang/lib/CodeGen -I /build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/lib/CodeGen -I /build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/include -I tools/clang/include -I include -I /build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/llvm/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-15/lib/clang/15.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/build-llvm=build-llvm -fmacro-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/build-llvm=build-llvm -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/= -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/build-llvm=build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-03-20-232535-108605-1 -x c++ /build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/lib/CodeGen/CodeGenModule.cpp

/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/lib/CodeGen/CodeGenModule.cpp

→

1//===--- CodeGenModule.cpp - Emit LLVM Code from ASTs for a Module --------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This coordinates the per-module state used while generating code.
10//
11//===----------------------------------------------------------------------===//

13#include "CodeGenModule.h"
14#include "CGBlocks.h"
15#include "CGCUDARuntime.h"
16#include "CGCXXABI.h"
17#include "CGCall.h"
18#include "CGDebugInfo.h"
19#include "CGObjCRuntime.h"
20#include "CGOpenCLRuntime.h"
21#include "CGOpenMPRuntime.h"
22#include "CGOpenMPRuntimeGPU.h"
23#include "CodeGenFunction.h"
24#include "CodeGenPGO.h"
25#include "ConstantEmitter.h"
26#include "CoverageMappingGen.h"
27#include "TargetInfo.h"
28#include "clang/AST/ASTContext.h"
29#include "clang/AST/CharUnits.h"
30#include "clang/AST/DeclCXX.h"
31#include "clang/AST/DeclObjC.h"
32#include "clang/AST/DeclTemplate.h"
33#include "clang/AST/Mangle.h"
34#include "clang/AST/RecordLayout.h"
35#include "clang/AST/RecursiveASTVisitor.h"
36#include "clang/AST/StmtVisitor.h"
37#include "clang/Basic/Builtins.h"
38#include "clang/Basic/CharInfo.h"
39#include "clang/Basic/CodeGenOptions.h"
40#include "clang/Basic/Diagnostic.h"
41#include "clang/Basic/FileManager.h"
42#include "clang/Basic/Module.h"
43#include "clang/Basic/SourceManager.h"
44#include "clang/Basic/TargetInfo.h"
45#include "clang/Basic/Version.h"
46#include "clang/CodeGen/BackendUtil.h"
47#include "clang/CodeGen/ConstantInitBuilder.h"
48#include "clang/Frontend/FrontendDiagnostic.h"
49#include "llvm/ADT/StringSwitch.h"
50#include "llvm/ADT/Triple.h"
51#include "llvm/Analysis/TargetLibraryInfo.h"
52#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
53#include "llvm/IR/CallingConv.h"
54#include "llvm/IR/DataLayout.h"
55#include "llvm/IR/Intrinsics.h"
56#include "llvm/IR/LLVMContext.h"
57#include "llvm/IR/Module.h"
58#include "llvm/IR/ProfileSummary.h"
59#include "llvm/ProfileData/InstrProfReader.h"
60#include "llvm/Support/CodeGen.h"
61#include "llvm/Support/CommandLine.h"
62#include "llvm/Support/ConvertUTF.h"
63#include "llvm/Support/ErrorHandling.h"
64#include "llvm/Support/MD5.h"
65#include "llvm/Support/TimeProfiler.h"
66#include "llvm/Support/X86TargetParser.h"

68using namespace clang;
69using namespace CodeGen;

71static llvm::cl::opt<bool> LimitedCoverage(
  "limited-coverage-experimental", llvm::cl::ZeroOrMore, llvm::cl::Hidden,
  llvm::cl::desc("Emit limited coverage mapping information (experimental)"),
  llvm::cl::init(false));

76static const char AnnotationSection[] = "llvm.metadata";

78static CGCXXABI *createCXXABI(CodeGenModule &CGM) {
switch (CGM.getContext().getCXXABIKind()) {
case TargetCXXABI::AppleARM64:
case TargetCXXABI::Fuchsia:
case TargetCXXABI::GenericAArch64:
case TargetCXXABI::GenericARM:
case TargetCXXABI::iOS:
case TargetCXXABI::WatchOS:
case TargetCXXABI::GenericMIPS:
case TargetCXXABI::GenericItanium:
case TargetCXXABI::WebAssembly:
case TargetCXXABI::XL:
  return CreateItaniumCXXABI(CGM);
case TargetCXXABI::Microsoft:
  return CreateMicrosoftCXXABI(CGM);
}

llvm_unreachable("invalid C++ ABI kind")::llvm::llvm_unreachable_internal("invalid C++ ABI kind", "clang/lib/CodeGen/CodeGenModule.cpp"
, 95);
96}

98CodeGenModule::CodeGenModule(ASTContext &C, const HeaderSearchOptions &HSO,
                           const PreprocessorOptions &PPO,
                           const CodeGenOptions &CGO, llvm::Module &M,
                           DiagnosticsEngine &diags,
                           CoverageSourceInfo *CoverageInfo)
  : Context(C), LangOpts(C.getLangOpts()), HeaderSearchOpts(HSO),
    PreprocessorOpts(PPO), CodeGenOpts(CGO), TheModule(M), Diags(diags),
    Target(C.getTargetInfo()), ABI(createCXXABI(*this)),
    VMContext(M.getContext()), Types(*this), VTables(*this),
    SanitizerMD(new SanitizerMetadata(*this)) {

// Initialize the type cache.
llvm::LLVMContext &LLVMContext = M.getContext();
VoidTy = llvm::Type::getVoidTy(LLVMContext);
Int8Ty = llvm::Type::getInt8Ty(LLVMContext);
Int16Ty = llvm::Type::getInt16Ty(LLVMContext);
Int32Ty = llvm::Type::getInt32Ty(LLVMContext);
Int64Ty = llvm::Type::getInt64Ty(LLVMContext);
HalfTy = llvm::Type::getHalfTy(LLVMContext);
BFloatTy = llvm::Type::getBFloatTy(LLVMContext);
FloatTy = llvm::Type::getFloatTy(LLVMContext);
DoubleTy = llvm::Type::getDoubleTy(LLVMContext);
PointerWidthInBits = C.getTargetInfo().getPointerWidth(0);
PointerAlignInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getPointerAlign(0)).getQuantity();
SizeSizeInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getMaxPointerWidth()).getQuantity();
IntAlignInBytes =
  C.toCharUnitsFromBits(C.getTargetInfo().getIntAlign()).getQuantity();
CharTy =
  llvm::IntegerType::get(LLVMContext, C.getTargetInfo().getCharWidth());
IntTy = llvm::IntegerType::get(LLVMContext, C.getTargetInfo().getIntWidth());
IntPtrTy = llvm::IntegerType::get(LLVMContext,
  C.getTargetInfo().getMaxPointerWidth());
Int8PtrTy = Int8Ty->getPointerTo(0);
Int8PtrPtrTy = Int8PtrTy->getPointerTo(0);
const llvm::DataLayout &DL = M.getDataLayout();
AllocaInt8PtrTy = Int8Ty->getPointerTo(DL.getAllocaAddrSpace());
GlobalsInt8PtrTy = Int8Ty->getPointerTo(DL.getDefaultGlobalsAddressSpace());
ASTAllocaAddressSpace = getTargetCodeGenInfo().getASTAllocaAddressSpace();

RuntimeCC = getTargetCodeGenInfo().getABIInfo().getRuntimeCC();

if (LangOpts.ObjC)
  createObjCRuntime();
if (LangOpts.OpenCL)
  createOpenCLRuntime();
if (LangOpts.OpenMP)
  createOpenMPRuntime();
if (LangOpts.CUDA)
  createCUDARuntime();

// Enable TBAA unless it's suppressed. ThreadSanitizer needs TBAA even at O0.
if (LangOpts.Sanitize.has(SanitizerKind::Thread) ||
    (!CodeGenOpts.RelaxedAliasing && CodeGenOpts.OptimizationLevel > 0))
  TBAA.reset(new CodeGenTBAA(Context, TheModule, CodeGenOpts, getLangOpts(),
                             getCXXABI().getMangleContext()));

// If debug info or coverage generation is enabled, create the CGDebugInfo
// object.
if (CodeGenOpts.getDebugInfo() != codegenoptions::NoDebugInfo ||
    CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes)
  DebugInfo.reset(new CGDebugInfo(*this));

Block.GlobalUniqueCount = 0;

if (C.getLangOpts().ObjC)
  ObjCData.reset(new ObjCEntrypoints());

if (CodeGenOpts.hasProfileClangUse()) {
  auto ReaderOrErr = llvm::IndexedInstrProfReader::create(
      CodeGenOpts.ProfileInstrumentUsePath, CodeGenOpts.ProfileRemappingFile);
  if (auto E = ReaderOrErr.takeError()) {
    unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
                                            "Could not read profile %0: %1");
    llvm::handleAllErrors(std::move(E), [&](const llvm::ErrorInfoBase &EI) {
      getDiags().Report(DiagID) << CodeGenOpts.ProfileInstrumentUsePath
                                << EI.message();
    });
  } else
    PGOReader = std::move(ReaderOrErr.get());
}

// If coverage mapping generation is enabled, create the
// CoverageMappingModuleGen object.
if (CodeGenOpts.CoverageMapping)
  CoverageMapping.reset(new CoverageMappingModuleGen(*this, *CoverageInfo));

// Generate the module name hash here if needed.
if (CodeGenOpts.UniqueInternalLinkageNames &&
    !getModule().getSourceFileName().empty()) {
  std::string Path = getModule().getSourceFileName();
  // Check if a path substitution is needed from the MacroPrefixMap.
  for (const auto &Entry : LangOpts.MacroPrefixMap)
    if (Path.rfind(Entry.first, 0) != std::string::npos) {
      Path = Entry.second + Path.substr(Entry.first.size());
      break;
    }
  llvm::MD5 Md5;
  Md5.update(Path);
  llvm::MD5::MD5Result R;
  Md5.final(R);
  SmallString<32> Str;
  llvm::MD5::stringifyResult(R, Str);
  // Convert MD5hash to Decimal. Demangler suffixes can either contain
  // numbers or characters but not both.
  llvm::APInt IntHash(128, Str.str(), 16);
  // Prepend "__uniq" before the hash for tools like profilers to understand
  // that this symbol is of internal linkage type.  The "__uniq" is the
  // pre-determined prefix that is used to tell tools that this symbol was
  // created with -funique-internal-linakge-symbols and the tools can strip or
  // keep the prefix as needed.
  ModuleNameHash = (Twine(".__uniq.") +
      Twine(toString(IntHash, /* Radix = */ 10, /* Signed = */false))).str();
}
213}

215CodeGenModule::~CodeGenModule() {}

217void CodeGenModule::createObjCRuntime() {
// This is just isGNUFamily(), but we want to force implementors of
// new ABIs to decide how best to do this.
switch (LangOpts.ObjCRuntime.getKind()) {
case ObjCRuntime::GNUstep:
case ObjCRuntime::GCC:
case ObjCRuntime::ObjFW:
  ObjCRuntime.reset(CreateGNUObjCRuntime(*this));
  return;

case ObjCRuntime::FragileMacOSX:
case ObjCRuntime::MacOSX:
case ObjCRuntime::iOS:
case ObjCRuntime::WatchOS:
  ObjCRuntime.reset(CreateMacObjCRuntime(*this));
  return;
}
llvm_unreachable("bad runtime kind")::llvm::llvm_unreachable_internal("bad runtime kind", "clang/lib/CodeGen/CodeGenModule.cpp"
, 234);
235}

237void CodeGenModule::createOpenCLRuntime() {
OpenCLRuntime.reset(new CGOpenCLRuntime(*this));
239}

241void CodeGenModule::createOpenMPRuntime() {
// Select a specialized code generation class based on the target, if any.
// If it does not exist use the default implementation.
switch (getTriple().getArch()) {
case llvm::Triple::nvptx:
case llvm::Triple::nvptx64:
case llvm::Triple::amdgcn:
  assert(getLangOpts().OpenMPIsDevice &&(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP AMDGPU/NVPTX is only prepared to deal with device code."
) ? void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP AMDGPU/NVPTX is only prepared to deal with device code.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 249, __extension__ __PRETTY_FUNCTION__
))
         "OpenMP AMDGPU/NVPTX is only prepared to deal with device code.")(static_cast <bool> (getLangOpts().OpenMPIsDevice &&
 "OpenMP AMDGPU/NVPTX is only prepared to deal with device code."
) ? void (0) : __assert_fail ("getLangOpts().OpenMPIsDevice && \"OpenMP AMDGPU/NVPTX is only prepared to deal with device code.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 249, __extension__ __PRETTY_FUNCTION__
));
  OpenMPRuntime.reset(new CGOpenMPRuntimeGPU(*this));
  break;
default:
  if (LangOpts.OpenMPSimd)
    OpenMPRuntime.reset(new CGOpenMPSIMDRuntime(*this));
  else
    OpenMPRuntime.reset(new CGOpenMPRuntime(*this));
  break;
}
259}

261void CodeGenModule::createCUDARuntime() {
CUDARuntime.reset(CreateNVCUDARuntime(*this));
263}

265void CodeGenModule::addReplacement(StringRef Name, llvm::Constant *C) {
Replacements[Name] = C;
267}

269void CodeGenModule::applyReplacements() {
for (auto &I : Replacements) {
  StringRef MangledName = I.first();
  llvm::Constant *Replacement = I.second;
  llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
  if (!Entry)
    continue;
  auto *OldF = cast<llvm::Function>(Entry);
  auto *NewF = dyn_cast<llvm::Function>(Replacement);
  if (!NewF) {
    if (auto *Alias = dyn_cast<llvm::GlobalAlias>(Replacement)) {
      NewF = dyn_cast<llvm::Function>(Alias->getAliasee());
    } else {
      auto *CE = cast<llvm::ConstantExpr>(Replacement);
      assert(CE->getOpcode() == llvm::Instruction::BitCast ||(static_cast <bool> (CE->getOpcode() == llvm::Instruction
::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr
) ? void (0) : __assert_fail ("CE->getOpcode() == llvm::Instruction::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr"
, "clang/lib/CodeGen/CodeGenModule.cpp", 284, __extension__ __PRETTY_FUNCTION__
))
             CE->getOpcode() == llvm::Instruction::GetElementPtr)(static_cast <bool> (CE->getOpcode() == llvm::Instruction
::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr
) ? void (0) : __assert_fail ("CE->getOpcode() == llvm::Instruction::BitCast || CE->getOpcode() == llvm::Instruction::GetElementPtr"
, "clang/lib/CodeGen/CodeGenModule.cpp", 284, __extension__ __PRETTY_FUNCTION__
));
      NewF = dyn_cast<llvm::Function>(CE->getOperand(0));
    }
  }

  // Replace old with new, but keep the old order.
  OldF->replaceAllUsesWith(Replacement);
  if (NewF) {
    NewF->removeFromParent();
    OldF->getParent()->getFunctionList().insertAfter(OldF->getIterator(),
                                                     NewF);
  }
  OldF->eraseFromParent();
}
298}

300void CodeGenModule::addGlobalValReplacement(llvm::GlobalValue *GV, llvm::Constant *C) {
GlobalValReplacements.push_back(std::make_pair(GV, C));
302}

304void CodeGenModule::applyGlobalValReplacements() {
for (auto &I : GlobalValReplacements) {
  llvm::GlobalValue *GV = I.first;
  llvm::Constant *C = I.second;

  GV->replaceAllUsesWith(C);
  GV->eraseFromParent();
}
312}

314// This is only used in aliases that we created and we know they have a
315// linear structure.
316static const llvm::GlobalValue *getAliasedGlobal(const llvm::GlobalValue *GV) {
const llvm::Constant *C;
if (auto *GA = dyn_cast<llvm::GlobalAlias>(GV))
  C = GA->getAliasee();
else if (auto *GI = dyn_cast<llvm::GlobalIFunc>(GV))
  C = GI->getResolver();
else
  return GV;

const auto *AliaseeGV = dyn_cast<llvm::GlobalValue>(C->stripPointerCasts());
if (!AliaseeGV)
  return nullptr;

const llvm::GlobalValue *FinalGV = AliaseeGV->getAliaseeObject();
if (FinalGV == GV)
  return nullptr;

return FinalGV;
334}

336static bool checkAliasedGlobal(DiagnosticsEngine &Diags,
                             SourceLocation Location, bool IsIFunc,
                             const llvm::GlobalValue *Alias,
                             const llvm::GlobalValue *&GV) {
GV = getAliasedGlobal(Alias);
if (!GV) {
  Diags.Report(Location, diag::err_cyclic_alias) << IsIFunc;
  return false;
}

if (GV->isDeclaration()) {
  Diags.Report(Location, diag::err_alias_to_undefined) << IsIFunc << IsIFunc;
  return false;
}

if (IsIFunc) {
  // Check resolver function type.
  const auto *F = dyn_cast<llvm::Function>(GV);
  if (!F) {
    Diags.Report(Location, diag::err_alias_to_undefined)
        << IsIFunc << IsIFunc;
    return false;
  }

  llvm::FunctionType *FTy = F->getFunctionType();
  if (!FTy->getReturnType()->isPointerTy()) {
    Diags.Report(Location, diag::err_ifunc_resolver_return);
    return false;
  }
}

return true;
368}

370void CodeGenModule::checkAliases() {
// Check if the constructed aliases are well formed. It is really unfortunate
// that we have to do this in CodeGen, but we only construct mangled names
// and aliases during codegen.
bool Error = false;
DiagnosticsEngine &Diags = getDiags();
for (const GlobalDecl &GD : Aliases) {
  const auto *D = cast<ValueDecl>(GD.getDecl());
  SourceLocation Location;
  bool IsIFunc = D->hasAttr<IFuncAttr>();
  if (const Attr *A = D->getDefiningAttr())
    Location = A->getLocation();
  else
    llvm_unreachable("Not an alias or ifunc?")::llvm::llvm_unreachable_internal("Not an alias or ifunc?", "clang/lib/CodeGen/CodeGenModule.cpp"
, 383);

  StringRef MangledName = getMangledName(GD);
  llvm::GlobalValue *Alias = GetGlobalValue(MangledName);
  const llvm::GlobalValue *GV = nullptr;
  if (!checkAliasedGlobal(Diags, Location, IsIFunc, Alias, GV)) {
    Error = true;
    continue;
  }

  llvm::Constant *Aliasee =
      IsIFunc ? cast<llvm::GlobalIFunc>(Alias)->getResolver()
              : cast<llvm::GlobalAlias>(Alias)->getAliasee();

  llvm::GlobalValue *AliaseeGV;
  if (auto CE = dyn_cast<llvm::ConstantExpr>(Aliasee))
    AliaseeGV = cast<llvm::GlobalValue>(CE->getOperand(0));
  else
    AliaseeGV = cast<llvm::GlobalValue>(Aliasee);

  if (const SectionAttr *SA = D->getAttr<SectionAttr>()) {
    StringRef AliasSection = SA->getName();
    if (AliasSection != AliaseeGV->getSection())
      Diags.Report(SA->getLocation(), diag::warn_alias_with_section)
          << AliasSection << IsIFunc << IsIFunc;
  }

  // We have to handle alias to weak aliases in here. LLVM itself disallows
  // this since the object semantics would not match the IL one. For
  // compatibility with gcc we implement it by just pointing the alias
  // to its aliasee's aliasee. We also warn, since the user is probably
  // expecting the link to be weak.
  if (auto *GA = dyn_cast<llvm::GlobalAlias>(AliaseeGV)) {
    if (GA->isInterposable()) {
      Diags.Report(Location, diag::warn_alias_to_weak_alias)
          << GV->getName() << GA->getName() << IsIFunc;
      Aliasee = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
          GA->getAliasee(), Alias->getType());

      if (IsIFunc)
        cast<llvm::GlobalIFunc>(Alias)->setResolver(Aliasee);
      else
        cast<llvm::GlobalAlias>(Alias)->setAliasee(Aliasee);
    }
  }
}
if (!Error)
  return;

for (const GlobalDecl &GD : Aliases) {
  StringRef MangledName = getMangledName(GD);
  llvm::GlobalValue *Alias = GetGlobalValue(MangledName);
  Alias->replaceAllUsesWith(llvm::UndefValue::get(Alias->getType()));
  Alias->eraseFromParent();
}
438}

440void CodeGenModule::clear() {
DeferredDeclsToEmit.clear();
if (OpenMPRuntime)
  OpenMPRuntime->clear();
444}

446void InstrProfStats::reportDiagnostics(DiagnosticsEngine &Diags,
                                     StringRef MainFile) {
if (!hasDiagnostics())
  return;
if (VisitedInMainFile > 0 && VisitedInMainFile == MissingInMainFile) {
  if (MainFile.empty())
    MainFile = "<stdin>";
  Diags.Report(diag::warn_profile_data_unprofiled) << MainFile;
} else {
  if (Mismatched > 0)
    Diags.Report(diag::warn_profile_data_out_of_date) << Visited << Mismatched;

  if (Missing > 0)
    Diags.Report(diag::warn_profile_data_missing) << Visited << Missing;
}
461}

463static void setVisibilityFromDLLStorageClass(const clang::LangOptions &LO,
                                           llvm::Module &M) {
if (!LO.VisibilityFromDLLStorageClass)
  return;

llvm::GlobalValue::VisibilityTypes DLLExportVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getDLLExportVisibility());
llvm::GlobalValue::VisibilityTypes NoDLLStorageClassVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getNoDLLStorageClassVisibility());
llvm::GlobalValue::VisibilityTypes ExternDeclDLLImportVisibility =
    CodeGenModule::GetLLVMVisibility(LO.getExternDeclDLLImportVisibility());
llvm::GlobalValue::VisibilityTypes ExternDeclNoDLLStorageClassVisibility =
    CodeGenModule::GetLLVMVisibility(
        LO.getExternDeclNoDLLStorageClassVisibility());

for (llvm::GlobalValue &GV : M.global_values()) {
  if (GV.hasAppendingLinkage() || GV.hasLocalLinkage())
    continue;

  // Reset DSO locality before setting the visibility. This removes
  // any effects that visibility options and annotations may have
  // had on the DSO locality. Setting the visibility will implicitly set
  // appropriate globals to DSO Local; however, this will be pessimistic
  // w.r.t. to the normal compiler IRGen.
  GV.setDSOLocal(false);

  if (GV.isDeclarationForLinker()) {
    GV.setVisibility(GV.getDLLStorageClass() ==
                             llvm::GlobalValue::DLLImportStorageClass
                         ? ExternDeclDLLImportVisibility
                         : ExternDeclNoDLLStorageClassVisibility);
  } else {
    GV.setVisibility(GV.getDLLStorageClass() ==
                             llvm::GlobalValue::DLLExportStorageClass
                         ? DLLExportVisibility
                         : NoDLLStorageClassVisibility);
  }

  GV.setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);
}
503}

505void CodeGenModule::Release() {
EmitDeferred();
EmitVTablesOpportunistically();
applyGlobalValReplacements();
applyReplacements();
checkAliases();
emitMultiVersionFunctions();
EmitCXXGlobalInitFunc();
EmitCXXGlobalCleanUpFunc();
registerGlobalDtorsWithAtExit();
EmitCXXThreadLocalInitFunc();
if (ObjCRuntime)
  if (llvm::Function *ObjCInitFunction = ObjCRuntime->ModuleInitFunction())
    AddGlobalCtor(ObjCInitFunction);
if (Context.getLangOpts().CUDA && CUDARuntime) {
  if (llvm::Function *CudaCtorFunction = CUDARuntime->finalizeModule())
    AddGlobalCtor(CudaCtorFunction);
}
if (OpenMPRuntime) {
  if (llvm::Function *OpenMPRequiresDirectiveRegFun =
          OpenMPRuntime->emitRequiresDirectiveRegFun()) {
    AddGlobalCtor(OpenMPRequiresDirectiveRegFun, 0);
  }
  OpenMPRuntime->createOffloadEntriesAndInfoMetadata();
  OpenMPRuntime->clear();
}
if (PGOReader) {
  getModule().setProfileSummary(
      PGOReader->getSummary(/* UseCS */ false).getMD(VMContext),
      llvm::ProfileSummary::PSK_Instr);
  if (PGOStats.hasDiagnostics())
    PGOStats.reportDiagnostics(getDiags(), getCodeGenOpts().MainFileName);
}
EmitCtorList(GlobalCtors, "llvm.global_ctors");
EmitCtorList(GlobalDtors, "llvm.global_dtors");
EmitGlobalAnnotations();
EmitStaticExternCAliases();
EmitDeferredUnusedCoverageMappings();
CodeGenPGO(*this).setValueProfilingFlag(getModule());
if (CoverageMapping)
  CoverageMapping->emit();
if (CodeGenOpts.SanitizeCfiCrossDso) {
  CodeGenFunction(*this).EmitCfiCheckFail();
  CodeGenFunction(*this).EmitCfiCheckStub();
}
emitAtAvailableLinkGuard();
if (Context.getTargetInfo().getTriple().isWasm() &&
    !Context.getTargetInfo().getTriple().isOSEmscripten()) {
  EmitMainVoidAlias();
}

if (getTriple().isAMDGPU()) {
  // Emit reference of __amdgpu_device_library_preserve_asan_functions to
  // preserve ASAN functions in bitcode libraries.
  if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
    auto *FT = llvm::FunctionType::get(VoidTy, {});
    auto *F = llvm::Function::Create(
        FT, llvm::GlobalValue::ExternalLinkage,
        "__amdgpu_device_library_preserve_asan_functions", &getModule());
    auto *Var = new llvm::GlobalVariable(
        getModule(), FT->getPointerTo(),
        /*isConstant=*/true, llvm::GlobalValue::WeakAnyLinkage, F,
        "__amdgpu_device_library_preserve_asan_functions_ptr", nullptr,
        llvm::GlobalVariable::NotThreadLocal);
    addCompilerUsedGlobal(Var);
  }
  // Emit amdgpu_code_object_version module flag, which is code object version
  // times 100.
  // ToDo: Enable module flag for all code object version when ROCm device
  // library is ready.
  if (getTarget().getTargetOpts().CodeObjectVersion == TargetOptions::COV_5) {
    getModule().addModuleFlag(llvm::Module::Error,
                              "amdgpu_code_object_version",
                              getTarget().getTargetOpts().CodeObjectVersion);
  }
}

emitLLVMUsed();
if (SanStats)
  SanStats->finish();

if (CodeGenOpts.Autolink &&
    (Context.getLangOpts().Modules || !LinkerOptionsMetadata.empty())) {
  EmitModuleLinkOptions();
}

// On ELF we pass the dependent library specifiers directly to the linker
// without manipulating them. This is in contrast to other platforms where
// they are mapped to a specific linker option by the compiler. This
// difference is a result of the greater variety of ELF linkers and the fact
// that ELF linkers tend to handle libraries in a more complicated fashion
// than on other platforms. This forces us to defer handling the dependent
// libs to the linker.
//
// CUDA/HIP device and host libraries are different. Currently there is no
// way to differentiate dependent libraries for host or device. Existing
// usage of #pragma comment(lib, *) is intended for host libraries on
// Windows. Therefore emit llvm.dependent-libraries only for host.
if (!ELFDependentLibraries.empty() && !Context.getLangOpts().CUDAIsDevice) {
  auto *NMD = getModule().getOrInsertNamedMetadata("llvm.dependent-libraries");
  for (auto *MD : ELFDependentLibraries)
    NMD->addOperand(MD);
}

// Record mregparm value now so it is visible through rest of codegen.
if (Context.getTargetInfo().getTriple().getArch() == llvm::Triple::x86)
  getModule().addModuleFlag(llvm::Module::Error, "NumRegisterParameters",
                            CodeGenOpts.NumRegisterParameters);

if (CodeGenOpts.DwarfVersion) {
  getModule().addModuleFlag(llvm::Module::Max, "Dwarf Version",
                            CodeGenOpts.DwarfVersion);
}

if (CodeGenOpts.Dwarf64)
  getModule().addModuleFlag(llvm::Module::Max, "DWARF64", 1);

if (Context.getLangOpts().SemanticInterposition)
  // Require various optimization to respect semantic interposition.
  getModule().setSemanticInterposition(true);

if (CodeGenOpts.EmitCodeView) {
  // Indicate that we want CodeView in the metadata.
  getModule().addModuleFlag(llvm::Module::Warning, "CodeView", 1);
}
if (CodeGenOpts.CodeViewGHash) {
  getModule().addModuleFlag(llvm::Module::Warning, "CodeViewGHash", 1);
}
if (CodeGenOpts.ControlFlowGuard) {
  // Function ID tables and checks for Control Flow Guard (cfguard=2).
  getModule().addModuleFlag(llvm::Module::Warning, "cfguard", 2);
} else if (CodeGenOpts.ControlFlowGuardNoChecks) {
  // Function ID tables for Control Flow Guard (cfguard=1).
  getModule().addModuleFlag(llvm::Module::Warning, "cfguard", 1);
}
if (CodeGenOpts.EHContGuard) {
  // Function ID tables for EH Continuation Guard.
  getModule().addModuleFlag(llvm::Module::Warning, "ehcontguard", 1);
}
if (CodeGenOpts.OptimizationLevel > 0 && CodeGenOpts.StrictVTablePointers) {
  // We don't support LTO with 2 with different StrictVTablePointers
  // FIXME: we could support it by stripping all the information introduced
  // by StrictVTablePointers.

  getModule().addModuleFlag(llvm::Module::Error, "StrictVTablePointers",1);

  llvm::Metadata *Ops[2] = {
            llvm::MDString::get(VMContext, "StrictVTablePointers"),
            llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
                llvm::Type::getInt32Ty(VMContext), 1))};

  getModule().addModuleFlag(llvm::Module::Require,
                            "StrictVTablePointersRequirement",
                            llvm::MDNode::get(VMContext, Ops));
}
if (getModuleDebugInfo())
  // We support a single version in the linked module. The LLVM
  // parser will drop debug info with a different version number
  // (and warn about it, too).
  getModule().addModuleFlag(llvm::Module::Warning, "Debug Info Version",
                            llvm::DEBUG_METADATA_VERSION);

// We need to record the widths of enums and wchar_t, so that we can generate
// the correct build attributes in the ARM backend. wchar_size is also used by
// TargetLibraryInfo.
uint64_t WCharWidth =
    Context.getTypeSizeInChars(Context.getWideCharType()).getQuantity();
getModule().addModuleFlag(llvm::Module::Error, "wchar_size", WCharWidth);

llvm::Triple::ArchType Arch = Context.getTargetInfo().getTriple().getArch();
if (   Arch == llvm::Triple::arm
    || Arch == llvm::Triple::armeb
    || Arch == llvm::Triple::thumb
    || Arch == llvm::Triple::thumbeb) {
  // The minimum width of an enum in bytes
  uint64_t EnumWidth = Context.getLangOpts().ShortEnums ? 1 : 4;
  getModule().addModuleFlag(llvm::Module::Error, "min_enum_size", EnumWidth);
}

if (Arch == llvm::Triple::riscv32 || Arch == llvm::Triple::riscv64) {
  StringRef ABIStr = Target.getABI();
  llvm::LLVMContext &Ctx = TheModule.getContext();
  getModule().addModuleFlag(llvm::Module::Error, "target-abi",
                            llvm::MDString::get(Ctx, ABIStr));
}

if (CodeGenOpts.SanitizeCfiCrossDso) {
  // Indicate that we want cross-DSO control flow integrity checks.
  getModule().addModuleFlag(llvm::Module::Override, "Cross-DSO CFI", 1);
}

if (CodeGenOpts.WholeProgramVTables) {
  // Indicate whether VFE was enabled for this module, so that the
  // vcall_visibility metadata added under whole program vtables is handled
  // appropriately in the optimizer.
  getModule().addModuleFlag(llvm::Module::Error, "Virtual Function Elim",
                            CodeGenOpts.VirtualFunctionElimination);
}

if (LangOpts.Sanitize.has(SanitizerKind::CFIICall)) {
  getModule().addModuleFlag(llvm::Module::Override,
                            "CFI Canonical Jump Tables",
                            CodeGenOpts.SanitizeCfiCanonicalJumpTables);
}

if (CodeGenOpts.CFProtectionReturn &&
    Target.checkCFProtectionReturnSupported(getDiags())) {
  // Indicate that we want to instrument return control flow protection.
  getModule().addModuleFlag(llvm::Module::Override, "cf-protection-return",
                            1);
}

if (CodeGenOpts.CFProtectionBranch &&
    Target.checkCFProtectionBranchSupported(getDiags())) {
  // Indicate that we want to instrument branch control flow protection.
  getModule().addModuleFlag(llvm::Module::Override, "cf-protection-branch",
                            1);
}

if (CodeGenOpts.IBTSeal)
  getModule().addModuleFlag(llvm::Module::Override, "ibt-seal", 1);

// Add module metadata for return address signing (ignoring
// non-leaf/all) and stack tagging. These are actually turned on by function
// attributes, but we use module metadata to emit build attributes. This is
// needed for LTO, where the function attributes are inside bitcode
// serialised into a global variable by the time build attributes are
// emitted, so we can't access them.
if (Context.getTargetInfo().hasFeature("ptrauth") &&
    LangOpts.getSignReturnAddressScope() !=
        LangOptions::SignReturnAddressScopeKind::None)
  getModule().addModuleFlag(llvm::Module::Override,
                            "sign-return-address-buildattr", 1);
if (LangOpts.Sanitize.has(SanitizerKind::MemTag))
  getModule().addModuleFlag(llvm::Module::Override,
                            "tag-stack-memory-buildattr", 1);

if (Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb ||
    Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
    Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_32 ||
    Arch == llvm::Triple::aarch64_be) {
  getModule().addModuleFlag(llvm::Module::Error, "branch-target-enforcement",
                            LangOpts.BranchTargetEnforcement);

  getModule().addModuleFlag(llvm::Module::Error, "sign-return-address",
                            LangOpts.hasSignReturnAddress());

  getModule().addModuleFlag(llvm::Module::Error, "sign-return-address-all",
                            LangOpts.isSignReturnAddressScopeAll());

  getModule().addModuleFlag(llvm::Module::Error,
                            "sign-return-address-with-bkey",
                            !LangOpts.isSignReturnAddressWithAKey());
}

if (!CodeGenOpts.MemoryProfileOutput.empty()) {
  llvm::LLVMContext &Ctx = TheModule.getContext();
  getModule().addModuleFlag(
      llvm::Module::Error, "MemProfProfileFilename",
      llvm::MDString::get(Ctx, CodeGenOpts.MemoryProfileOutput));
}

if (LangOpts.CUDAIsDevice && getTriple().isNVPTX()) {
  // Indicate whether __nvvm_reflect should be configured to flush denormal
  // floating point values to 0.  (This corresponds to its "__CUDA_FTZ"
  // property.)
  getModule().addModuleFlag(llvm::Module::Override, "nvvm-reflect-ftz",
                            CodeGenOpts.FP32DenormalMode.Output !=
                                llvm::DenormalMode::IEEE);
}

if (LangOpts.EHAsynch)
  getModule().addModuleFlag(llvm::Module::Warning, "eh-asynch", 1);

// Indicate whether this Module was compiled with -fopenmp
if (getLangOpts().OpenMP && !getLangOpts().OpenMPSimd)
  getModule().addModuleFlag(llvm::Module::Max, "openmp", LangOpts.OpenMP);
if (getLangOpts().OpenMPIsDevice)
  getModule().addModuleFlag(llvm::Module::Max, "openmp-device",
                            LangOpts.OpenMP);

// Emit OpenCL specific module metadata: OpenCL/SPIR version.
if (LangOpts.OpenCL) {
  EmitOpenCLMetadata();
  // Emit SPIR version.
  if (getTriple().isSPIR()) {
    // SPIR v2.0 s2.12 - The SPIR version used by the module is stored in the
    // opencl.spir.version named metadata.
    // C++ for OpenCL has a distinct mapping for version compatibility with
    // OpenCL.
    auto Version = LangOpts.getOpenCLCompatibleVersion();
    llvm::Metadata *SPIRVerElts[] = {
        llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
            Int32Ty, Version / 100)),
        llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
            Int32Ty, (Version / 100 > 1) ? 0 : 2))};
    llvm::NamedMDNode *SPIRVerMD =
        TheModule.getOrInsertNamedMetadata("opencl.spir.version");
    llvm::LLVMContext &Ctx = TheModule.getContext();
    SPIRVerMD->addOperand(llvm::MDNode::get(Ctx, SPIRVerElts));
  }
}

if (uint32_t PLevel = Context.getLangOpts().PICLevel) {
  assert(PLevel < 3 && "Invalid PIC Level")(static_cast <bool> (PLevel < 3 && "Invalid PIC Level"
) ? void (0) : __assert_fail ("PLevel < 3 && \"Invalid PIC Level\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 809, __extension__ __PRETTY_FUNCTION__
));
  getModule().setPICLevel(static_cast<llvm::PICLevel::Level>(PLevel));
  if (Context.getLangOpts().PIE)
    getModule().setPIELevel(static_cast<llvm::PIELevel::Level>(PLevel));
}

if (getCodeGenOpts().CodeModel.size() > 0) {
  unsigned CM = llvm::StringSwitch<unsigned>(getCodeGenOpts().CodeModel)
                .Case("tiny", llvm::CodeModel::Tiny)
                .Case("small", llvm::CodeModel::Small)
                .Case("kernel", llvm::CodeModel::Kernel)
                .Case("medium", llvm::CodeModel::Medium)
                .Case("large", llvm::CodeModel::Large)
                .Default(~0u);
  if (CM != ~0u) {
    llvm::CodeModel::Model codeModel = static_cast<llvm::CodeModel::Model>(CM);
    getModule().setCodeModel(codeModel);
  }
}

if (CodeGenOpts.NoPLT)
  getModule().setRtLibUseGOT();
if (CodeGenOpts.UnwindTables)
  getModule().setUwtable(llvm::UWTableKind(CodeGenOpts.UnwindTables));

switch (CodeGenOpts.getFramePointer()) {
case CodeGenOptions::FramePointerKind::None:
  // 0 ("none") is the default.
  break;
case CodeGenOptions::FramePointerKind::NonLeaf:
  getModule().setFramePointer(llvm::FramePointerKind::NonLeaf);
  break;
case CodeGenOptions::FramePointerKind::All:
  getModule().setFramePointer(llvm::FramePointerKind::All);
  break;
}

SimplifyPersonality();

if (getCodeGenOpts().EmitDeclMetadata)
  EmitDeclMetadata();

if (getCodeGenOpts().EmitGcovArcs || getCodeGenOpts().EmitGcovNotes)
  EmitCoverageFile();

if (CGDebugInfo *DI = getModuleDebugInfo())
  DI->finalize();

if (getCodeGenOpts().EmitVersionIdentMetadata)
  EmitVersionIdentMetadata();

if (!getCodeGenOpts().RecordCommandLine.empty())
  EmitCommandLineMetadata();

if (!getCodeGenOpts().StackProtectorGuard.empty())
  getModule().setStackProtectorGuard(getCodeGenOpts().StackProtectorGuard);
if (!getCodeGenOpts().StackProtectorGuardReg.empty())
  getModule().setStackProtectorGuardReg(
      getCodeGenOpts().StackProtectorGuardReg);
if (getCodeGenOpts().StackProtectorGuardOffset != INT_MAX2147483647)
  getModule().setStackProtectorGuardOffset(
      getCodeGenOpts().StackProtectorGuardOffset);
if (getCodeGenOpts().StackAlignment)
  getModule().setOverrideStackAlignment(getCodeGenOpts().StackAlignment);
if (getCodeGenOpts().SkipRaxSetup)
  getModule().addModuleFlag(llvm::Module::Override, "SkipRaxSetup", 1);

getTargetCodeGenInfo().emitTargetMetadata(*this, MangledDeclNames);

EmitBackendOptionsMetadata(getCodeGenOpts());

// If there is device offloading code embed it in the host now.
EmbedObject(&getModule(), CodeGenOpts, getDiags());

// Set visibility from DLL storage class
// We do this at the end of LLVM IR generation; after any operation
// that might affect the DLL storage class or the visibility, and
// before anything that might act on these.
setVisibilityFromDLLStorageClass(LangOpts, getModule());
888}

890void CodeGenModule::EmitOpenCLMetadata() {
// SPIR v2.0 s2.13 - The OpenCL version used by the module is stored in the
// opencl.ocl.version named metadata node.
// C++ for OpenCL has a distinct mapping for versions compatibile with OpenCL.
auto Version = LangOpts.getOpenCLCompatibleVersion();
llvm::Metadata *OCLVerElts[] = {
    llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
        Int32Ty, Version / 100)),
    llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
        Int32Ty, (Version % 100) / 10))};
llvm::NamedMDNode *OCLVerMD =
    TheModule.getOrInsertNamedMetadata("opencl.ocl.version");
llvm::LLVMContext &Ctx = TheModule.getContext();
OCLVerMD->addOperand(llvm::MDNode::get(Ctx, OCLVerElts));
904}

906void CodeGenModule::EmitBackendOptionsMetadata(
  const CodeGenOptions CodeGenOpts) {
switch (getTriple().getArch()) {
default:
  break;
case llvm::Triple::riscv32:
case llvm::Triple::riscv64:
  getModule().addModuleFlag(llvm::Module::Error, "SmallDataLimit",
                            CodeGenOpts.SmallDataLimit);
  break;
}
917}

919void CodeGenModule::UpdateCompletedType(const TagDecl *TD) {
// Make sure that this type is translated.
Types.UpdateCompletedType(TD);
922}

924void CodeGenModule::RefreshTypeCacheForClass(const CXXRecordDecl *RD) {
// Make sure that this type is translated.
Types.RefreshTypeCacheForClass(RD);
927}

929llvm::MDNode *CodeGenModule::getTBAATypeInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getTypeInfo(QTy);
933}

935TBAAAccessInfo CodeGenModule::getTBAAAccessInfo(QualType AccessType) {
if (!TBAA)
  return TBAAAccessInfo();
if (getLangOpts().CUDAIsDevice) {
  // As CUDA builtin surface/texture types are replaced, skip generating TBAA
  // access info.
  if (AccessType->isCUDADeviceBuiltinSurfaceType()) {
    if (getTargetCodeGenInfo().getCUDADeviceBuiltinSurfaceDeviceType() !=
        nullptr)
      return TBAAAccessInfo();
  } else if (AccessType->isCUDADeviceBuiltinTextureType()) {
    if (getTargetCodeGenInfo().getCUDADeviceBuiltinTextureDeviceType() !=
        nullptr)
      return TBAAAccessInfo();
  }
}
return TBAA->getAccessInfo(AccessType);
952}

954TBAAAccessInfo
955CodeGenModule::getTBAAVTablePtrAccessInfo(llvm::Type *VTablePtrType) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->getVTablePtrAccessInfo(VTablePtrType);
959}

961llvm::MDNode *CodeGenModule::getTBAAStructInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getTBAAStructInfo(QTy);
965}

967llvm::MDNode *CodeGenModule::getTBAABaseTypeInfo(QualType QTy) {
if (!TBAA)
  return nullptr;
return TBAA->getBaseTypeInfo(QTy);
971}

973llvm::MDNode *CodeGenModule::getTBAAAccessTagInfo(TBAAAccessInfo Info) {
if (!TBAA)
  return nullptr;
return TBAA->getAccessTagInfo(Info);
977}

979TBAAAccessInfo CodeGenModule::mergeTBAAInfoForCast(TBAAAccessInfo SourceInfo,
                                                 TBAAAccessInfo TargetInfo) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForCast(SourceInfo, TargetInfo);
984}

986TBAAAccessInfo
987CodeGenModule::mergeTBAAInfoForConditionalOperator(TBAAAccessInfo InfoA,
                                                 TBAAAccessInfo InfoB) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForConditionalOperator(InfoA, InfoB);
992}

994TBAAAccessInfo
995CodeGenModule::mergeTBAAInfoForMemoryTransfer(TBAAAccessInfo DestInfo,
                                            TBAAAccessInfo SrcInfo) {
if (!TBAA)
  return TBAAAccessInfo();
return TBAA->mergeTBAAInfoForConditionalOperator(DestInfo, SrcInfo);
1000}

1002void CodeGenModule::DecorateInstructionWithTBAA(llvm::Instruction *Inst,
                                              TBAAAccessInfo TBAAInfo) {
if (llvm::MDNode *Tag = getTBAAAccessTagInfo(TBAAInfo))
  Inst->setMetadata(llvm::LLVMContext::MD_tbaa, Tag);
1006}

1008void CodeGenModule::DecorateInstructionWithInvariantGroup(
  llvm::Instruction *I, const CXXRecordDecl *RD) {
I->setMetadata(llvm::LLVMContext::MD_invariant_group,
               llvm::MDNode::get(getLLVMContext(), {}));
1012}

1014void CodeGenModule::Error(SourceLocation loc, StringRef message) {
unsigned diagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error, "%0");
getDiags().Report(Context.getFullLoc(loc), diagID) << message;
1017}

1019/// ErrorUnsupported - Print out an error that codegen doesn't support the
1020/// specified stmt yet.
1021void CodeGenModule::ErrorUnsupported(const Stmt *S, const char *Type) {
unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error,
                                             "cannot compile this %0 yet");
std::string Msg = Type;
getDiags().Report(Context.getFullLoc(S->getBeginLoc()), DiagID)
    << Msg << S->getSourceRange();
1027}

1029/// ErrorUnsupported - Print out an error that codegen doesn't support the
1030/// specified decl yet.
1031void CodeGenModule::ErrorUnsupported(const Decl *D, const char *Type) {
unsigned DiagID = getDiags().getCustomDiagID(DiagnosticsEngine::Error,
                                             "cannot compile this %0 yet");
std::string Msg = Type;
getDiags().Report(Context.getFullLoc(D->getLocation()), DiagID) << Msg;
1036}

1038llvm::ConstantInt *CodeGenModule::getSize(CharUnits size) {
return llvm::ConstantInt::get(SizeTy, size.getQuantity());
1040}

1042void CodeGenModule::setGlobalVisibility(llvm::GlobalValue *GV,
                                      const NamedDecl *D) const {
if (GV->hasDLLImportStorageClass())
  return;
// Internal definitions always have default visibility.
if (GV->hasLocalLinkage()) {
  GV->setVisibility(llvm::GlobalValue::DefaultVisibility);
  return;
}
if (!D)
  return;
// Set visibility for definitions, and for declarations if requested globally
// or set explicitly.
LinkageInfo LV = D->getLinkageAndVisibility();
if (LV.isVisibilityExplicit() || getLangOpts().SetVisibilityForExternDecls ||
    !GV->isDeclarationForLinker())
  GV->setVisibility(GetLLVMVisibility(LV.getVisibility()));
1059}

1061static bool shouldAssumeDSOLocal(const CodeGenModule &CGM,
                               llvm::GlobalValue *GV) {
if (GV->hasLocalLinkage())
  return true;

if (!GV->hasDefaultVisibility() && !GV->hasExternalWeakLinkage())
  return true;

// DLLImport explicitly marks the GV as external.
if (GV->hasDLLImportStorageClass())
  return false;

const llvm::Triple &TT = CGM.getTriple();
if (TT.isWindowsGNUEnvironment()) {
  // In MinGW, variables without DLLImport can still be automatically
  // imported from a DLL by the linker; don't mark variables that
  // potentially could come from another DLL as DSO local.

  // With EmulatedTLS, TLS variables can be autoimported from other DLLs
  // (and this actually happens in the public interface of libstdc++), so
  // such variables can't be marked as DSO local. (Native TLS variables
  // can't be dllimported at all, though.)
  if (GV->isDeclarationForLinker() && isa<llvm::GlobalVariable>(GV) &&
      (!GV->isThreadLocal() || CGM.getCodeGenOpts().EmulatedTLS))
    return false;
}

// On COFF, don't mark 'extern_weak' symbols as DSO local. If these symbols
// remain unresolved in the link, they can be resolved to zero, which is
// outside the current DSO.
if (TT.isOSBinFormatCOFF() && GV->hasExternalWeakLinkage())
  return false;

// Every other GV is local on COFF.
// Make an exception for windows OS in the triple: Some firmware builds use
// *-win32-macho triples. This (accidentally?) produced windows relocations
// without GOT tables in older clang versions; Keep this behaviour.
// FIXME: even thread local variables?
if (TT.isOSBinFormatCOFF() || (TT.isOSWindows() && TT.isOSBinFormatMachO()))
  return true;

// Only handle COFF and ELF for now.
if (!TT.isOSBinFormatELF())
  return false;

// If this is not an executable, don't assume anything is local.
const auto &CGOpts = CGM.getCodeGenOpts();
llvm::Reloc::Model RM = CGOpts.RelocationModel;
const auto &LOpts = CGM.getLangOpts();
if (RM != llvm::Reloc::Static && !LOpts.PIE) {
  // On ELF, if -fno-semantic-interposition is specified and the target
  // supports local aliases, there will be neither CC1
  // -fsemantic-interposition nor -fhalf-no-semantic-interposition. Set
  // dso_local on the function if using a local alias is preferable (can avoid
  // PLT indirection).
  if (!(isa<llvm::Function>(GV) && GV->canBenefitFromLocalAlias()))
    return false;
  return !(CGM.getLangOpts().SemanticInterposition ||
           CGM.getLangOpts().HalfNoSemanticInterposition);
}

// A definition cannot be preempted from an executable.
if (!GV->isDeclarationForLinker())
  return true;

// Most PIC code sequences that assume that a symbol is local cannot produce a
// 0 if it turns out the symbol is undefined. While this is ABI and relocation
// depended, it seems worth it to handle it here.
if (RM == llvm::Reloc::PIC_ && GV->hasExternalWeakLinkage())
  return false;

// PowerPC64 prefers TOC indirection to avoid copy relocations.
if (TT.isPPC64())
  return false;

if (CGOpts.DirectAccessExternalData) {
  // If -fdirect-access-external-data (default for -fno-pic), set dso_local
  // for non-thread-local variables. If the symbol is not defined in the
  // executable, a copy relocation will be needed at link time. dso_local is
  // excluded for thread-local variables because they generally don't support
  // copy relocations.
  if (auto *Var = dyn_cast<llvm::GlobalVariable>(GV))
    if (!Var->isThreadLocal())
      return true;

  // -fno-pic sets dso_local on a function declaration to allow direct
  // accesses when taking its address (similar to a data symbol). If the
  // function is not defined in the executable, a canonical PLT entry will be
  // needed at link time. -fno-direct-access-external-data can avoid the
  // canonical PLT entry. We don't generalize this condition to -fpie/-fpic as
  // it could just cause trouble without providing perceptible benefits.
  if (isa<llvm::Function>(GV) && !CGOpts.NoPLT && RM == llvm::Reloc::Static)
    return true;
}

// If we can use copy relocations we can assume it is local.

// Otherwise don't assume it is local.
return false;
1160}

1162void CodeGenModule::setDSOLocal(llvm::GlobalValue *GV) const {
GV->setDSOLocal(shouldAssumeDSOLocal(*this, GV));
1164}

1166void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                        GlobalDecl GD) const {
const auto *D = dyn_cast<NamedDecl>(GD.getDecl());
// C++ destructors have a few C++ ABI specific special cases.
if (const auto *Dtor = dyn_cast_or_null<CXXDestructorDecl>(D)) {
  getCXXABI().setCXXDestructorDLLStorage(GV, Dtor, GD.getDtorType());
  return;
}
setDLLImportDLLExport(GV, D);
1175}

1177void CodeGenModule::setDLLImportDLLExport(llvm::GlobalValue *GV,
                                        const NamedDecl *D) const {
if (D && D->isExternallyVisible()) {
  if (D->hasAttr<DLLImportAttr>())
    GV->setDLLStorageClass(llvm::GlobalVariable::DLLImportStorageClass);
  else if (D->hasAttr<DLLExportAttr>() && !GV->isDeclarationForLinker())
    GV->setDLLStorageClass(llvm::GlobalVariable::DLLExportStorageClass);
}
1185}

1187void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                  GlobalDecl GD) const {
setDLLImportDLLExport(GV, GD);
setGVPropertiesAux(GV, dyn_cast<NamedDecl>(GD.getDecl()));
1191}

1193void CodeGenModule::setGVProperties(llvm::GlobalValue *GV,
                                  const NamedDecl *D) const {
setDLLImportDLLExport(GV, D);
setGVPropertiesAux(GV, D);
1197}

1199void CodeGenModule::setGVPropertiesAux(llvm::GlobalValue *GV,
                                     const NamedDecl *D) const {
setGlobalVisibility(GV, D);
setDSOLocal(GV);
GV->setPartition(CodeGenOpts.SymbolPartition);
1204}

1206static llvm::GlobalVariable::ThreadLocalMode GetLLVMTLSModel(StringRef S) {
return llvm::StringSwitch<llvm::GlobalVariable::ThreadLocalMode>(S)
    .Case("global-dynamic", llvm::GlobalVariable::GeneralDynamicTLSModel)
    .Case("local-dynamic", llvm::GlobalVariable::LocalDynamicTLSModel)
    .Case("initial-exec", llvm::GlobalVariable::InitialExecTLSModel)
    .Case("local-exec", llvm::GlobalVariable::LocalExecTLSModel);
1212}

1214llvm::GlobalVariable::ThreadLocalMode
1215CodeGenModule::GetDefaultLLVMTLSModel() const {
switch (CodeGenOpts.getDefaultTLSModel()) {
case CodeGenOptions::GeneralDynamicTLSModel:
  return llvm::GlobalVariable::GeneralDynamicTLSModel;
case CodeGenOptions::LocalDynamicTLSModel:
  return llvm::GlobalVariable::LocalDynamicTLSModel;
case CodeGenOptions::InitialExecTLSModel:
  return llvm::GlobalVariable::InitialExecTLSModel;
case CodeGenOptions::LocalExecTLSModel:
  return llvm::GlobalVariable::LocalExecTLSModel;
}
llvm_unreachable("Invalid TLS model!")::llvm::llvm_unreachable_internal("Invalid TLS model!", "clang/lib/CodeGen/CodeGenModule.cpp"
, 1226);
1227}

1229void CodeGenModule::setTLSMode(llvm::GlobalValue *GV, const VarDecl &D) const {
assert(D.getTLSKind() && "setting TLS mode on non-TLS var!")(static_cast <bool> (D.getTLSKind() && "setting TLS mode on non-TLS var!"
) ? void (0) : __assert_fail ("D.getTLSKind() && \"setting TLS mode on non-TLS var!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1230, __extension__ __PRETTY_FUNCTION__
));

llvm::GlobalValue::ThreadLocalMode TLM;
TLM = GetDefaultLLVMTLSModel();

// Override the TLS model if it is explicitly specified.
if (const TLSModelAttr *Attr = D.getAttr<TLSModelAttr>()) {
  TLM = GetLLVMTLSModel(Attr->getModel());
}

GV->setThreadLocalMode(TLM);
1241}

1243static std::string getCPUSpecificMangling(const CodeGenModule &CGM,
                                        StringRef Name) {
const TargetInfo &Target = CGM.getTarget();
return (Twine('.') + Twine(Target.CPUSpecificManglingCharacter(Name))).str();
1247}

1249static void AppendCPUSpecificCPUDispatchMangling(const CodeGenModule &CGM,
                                               const CPUSpecificAttr *Attr,
                                               unsigned CPUIndex,
                                               raw_ostream &Out) {
// cpu_specific gets the current name, dispatch gets the resolver if IFunc is
// supported.
if (Attr)
  Out << getCPUSpecificMangling(CGM, Attr->getCPUName(CPUIndex)->getName());
else if (CGM.getTarget().supportsIFunc())
  Out << ".resolver";
1259}

1261static void AppendTargetMangling(const CodeGenModule &CGM,
                               const TargetAttr *Attr, raw_ostream &Out) {
if (Attr->isDefaultVersion())
  return;

Out << '.';
const TargetInfo &Target = CGM.getTarget();
ParsedTargetAttr Info =
    Attr->parse([&Target](StringRef LHS, StringRef RHS) {
      // Multiversioning doesn't allow "no-${feature}", so we can
      // only have "+" prefixes here.
      assert(LHS.startswith("+") && RHS.startswith("+") &&(static_cast <bool> (LHS.startswith("+") && RHS
.startswith("+") && "Features should always have a prefix."
) ? void (0) : __assert_fail ("LHS.startswith(\"+\") && RHS.startswith(\"+\") && \"Features should always have a prefix.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1273, __extension__ __PRETTY_FUNCTION__
))
             "Features should always have a prefix.")(static_cast <bool> (LHS.startswith("+") && RHS
.startswith("+") && "Features should always have a prefix."
) ? void (0) : __assert_fail ("LHS.startswith(\"+\") && RHS.startswith(\"+\") && \"Features should always have a prefix.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1273, __extension__ __PRETTY_FUNCTION__
));
      return Target.multiVersionSortPriority(LHS.substr(1)) >
             Target.multiVersionSortPriority(RHS.substr(1));
    });

bool IsFirst = true;

if (!Info.Architecture.empty()) {
  IsFirst = false;
  Out << "arch_" << Info.Architecture;
}

for (StringRef Feat : Info.Features) {
  if (!IsFirst)
    Out << '_';
  IsFirst = false;
  Out << Feat.substr(1);
}
1291}

1293// Returns true if GD is a function decl with internal linkage and
1294// needs a unique suffix after the mangled name.
1295static bool isUniqueInternalLinkageDecl(GlobalDecl GD,
                                      CodeGenModule &CGM) {
const Decl *D = GD.getDecl();
return !CGM.getModuleNameHash().empty() && isa<FunctionDecl>(D) &&
       (CGM.getFunctionLinkage(GD) == llvm::GlobalValue::InternalLinkage);
1300}

1302static void AppendTargetClonesMangling(const CodeGenModule &CGM,
                                     const TargetClonesAttr *Attr,
                                     unsigned VersionIndex,
                                     raw_ostream &Out) {
Out << '.';
StringRef FeatureStr = Attr->getFeatureStr(VersionIndex);
if (FeatureStr.startswith("arch="))
  Out << "arch_" << FeatureStr.substr(sizeof("arch=") - 1);
else
  Out << FeatureStr;

Out << '.' << Attr->getMangledIndex(VersionIndex);
1314}

1316static std::string getMangledNameImpl(CodeGenModule &CGM, GlobalDecl GD,
                                    const NamedDecl *ND,
                                    bool OmitMultiVersionMangling = false) {
SmallString<256> Buffer;
llvm::raw_svector_ostream Out(Buffer);
MangleContext &MC = CGM.getCXXABI().getMangleContext();
if (!CGM.getModuleNameHash().empty())
  MC.needsUniqueInternalLinkageNames();
bool ShouldMangle = MC.shouldMangleDeclName(ND);
if (ShouldMangle)
  MC.mangleName(GD.getWithDecl(ND), Out);
else {
  IdentifierInfo *II = ND->getIdentifier();
  assert(II && "Attempt to mangle unnamed decl.")(static_cast <bool> (II && "Attempt to mangle unnamed decl."
) ? void (0) : __assert_fail ("II && \"Attempt to mangle unnamed decl.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1329, __extension__ __PRETTY_FUNCTION__
));
  const auto *FD = dyn_cast<FunctionDecl>(ND);

  if (FD &&
      FD->getType()->castAs<FunctionType>()->getCallConv() == CC_X86RegCall) {
    Out << "__regcall3__" << II->getName();
  } else if (FD && FD->hasAttr<CUDAGlobalAttr>() &&
             GD.getKernelReferenceKind() == KernelReferenceKind::Stub) {
    Out << "__device_stub__" << II->getName();
  } else {
    Out << II->getName();
  }
}

// Check if the module name hash should be appended for internal linkage
// symbols.   This should come before multi-version target suffixes are
// appended. This is to keep the name and module hash suffix of the
// internal linkage function together.  The unique suffix should only be
// added when name mangling is done to make sure that the final name can
// be properly demangled.  For example, for C functions without prototypes,
// name mangling is not done and the unique suffix should not be appeneded
// then.
if (ShouldMangle && isUniqueInternalLinkageDecl(GD, CGM)) {
  assert(CGM.getCodeGenOpts().UniqueInternalLinkageNames &&(static_cast <bool> (CGM.getCodeGenOpts().UniqueInternalLinkageNames
 && "Hash computed when not explicitly requested") ? void
 (0) : __assert_fail ("CGM.getCodeGenOpts().UniqueInternalLinkageNames && \"Hash computed when not explicitly requested\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1353, __extension__ __PRETTY_FUNCTION__
))
         "Hash computed when not explicitly requested")(static_cast <bool> (CGM.getCodeGenOpts().UniqueInternalLinkageNames
 && "Hash computed when not explicitly requested") ? void
 (0) : __assert_fail ("CGM.getCodeGenOpts().UniqueInternalLinkageNames && \"Hash computed when not explicitly requested\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1353, __extension__ __PRETTY_FUNCTION__
));
  Out << CGM.getModuleNameHash();
}

if (const auto *FD = dyn_cast<FunctionDecl>(ND))
  if (FD->isMultiVersion() && !OmitMultiVersionMangling) {
    switch (FD->getMultiVersionKind()) {
    case MultiVersionKind::CPUDispatch:
    case MultiVersionKind::CPUSpecific:
      AppendCPUSpecificCPUDispatchMangling(CGM,
                                           FD->getAttr<CPUSpecificAttr>(),
                                           GD.getMultiVersionIndex(), Out);
      break;
    case MultiVersionKind::Target:
      AppendTargetMangling(CGM, FD->getAttr<TargetAttr>(), Out);
      break;
    case MultiVersionKind::TargetClones:
      AppendTargetClonesMangling(CGM, FD->getAttr<TargetClonesAttr>(),
                                 GD.getMultiVersionIndex(), Out);
      break;
    case MultiVersionKind::None:
      llvm_unreachable("None multiversion type isn't valid here")::llvm::llvm_unreachable_internal("None multiversion type isn't valid here"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1374);
    }
  }

// Make unique name for device side static file-scope variable for HIP.
if (CGM.getContext().shouldExternalizeStaticVar(ND) &&
    CGM.getLangOpts().GPURelocatableDeviceCode &&
    CGM.getLangOpts().CUDAIsDevice && !CGM.getLangOpts().CUID.empty())
  CGM.printPostfixForExternalizedStaticVar(Out);
return std::string(Out.str());
1384}

1386void CodeGenModule::UpdateMultiVersionNames(GlobalDecl GD,
                                          const FunctionDecl *FD,
                                          StringRef &CurName) {
if (!FD->isMultiVersion())
  return;

// Get the name of what this would be without the 'target' attribute.  This
// allows us to lookup the version that was emitted when this wasn't a
// multiversion function.
std::string NonTargetName =
    getMangledNameImpl(*this, GD, FD, /*OmitMultiVersionMangling=*/true);
GlobalDecl OtherGD;
if (lookupRepresentativeDecl(NonTargetName, OtherGD)) {
  assert(OtherGD.getCanonicalDecl()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1403, __extension__ __PRETTY_FUNCTION__
))
             .getDecl()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1403, __extension__ __PRETTY_FUNCTION__
))
             ->getAsFunction()(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1403, __extension__ __PRETTY_FUNCTION__
))
             ->isMultiVersion() &&(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1403, __extension__ __PRETTY_FUNCTION__
))
         "Other GD should now be a multiversioned function")(static_cast <bool> (OtherGD.getCanonicalDecl() .getDecl
() ->getAsFunction() ->isMultiVersion() && "Other GD should now be a multiversioned function"
) ? void (0) : __assert_fail ("OtherGD.getCanonicalDecl() .getDecl() ->getAsFunction() ->isMultiVersion() && \"Other GD should now be a multiversioned function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1403, __extension__ __PRETTY_FUNCTION__
));
  // OtherFD is the version of this function that was mangled BEFORE
  // becoming a MultiVersion function.  It potentially needs to be updated.
  const FunctionDecl *OtherFD = OtherGD.getCanonicalDecl()
                                    .getDecl()
                                    ->getAsFunction()
                                    ->getMostRecentDecl();
  std::string OtherName = getMangledNameImpl(*this, OtherGD, OtherFD);
  // This is so that if the initial version was already the 'default'
  // version, we don't try to update it.
  if (OtherName != NonTargetName) {
    // Remove instead of erase, since others may have stored the StringRef
    // to this.
    const auto ExistingRecord = Manglings.find(NonTargetName);
    if (ExistingRecord != std::end(Manglings))
      Manglings.remove(&(*ExistingRecord));
    auto Result = Manglings.insert(std::make_pair(OtherName, OtherGD));
    StringRef OtherNameRef = MangledDeclNames[OtherGD.getCanonicalDecl()] =
        Result.first->first();
    // If this is the current decl is being created, make sure we update the name.
    if (GD.getCanonicalDecl() == OtherGD.getCanonicalDecl())
      CurName = OtherNameRef;
    if (llvm::GlobalValue *Entry = GetGlobalValue(NonTargetName))
      Entry->setName(OtherName);
  }
}
1429}

1431StringRef CodeGenModule::getMangledName(GlobalDecl GD) {
GlobalDecl CanonicalGD = GD.getCanonicalDecl();

// Some ABIs don't have constructor variants.  Make sure that base and
// complete constructors get mangled the same.
if (const auto *CD = dyn_cast<CXXConstructorDecl>(CanonicalGD.getDecl())) {
  if (!getTarget().getCXXABI().hasConstructorVariants()) {
    CXXCtorType OrigCtorType = GD.getCtorType();
    assert(OrigCtorType == Ctor_Base || OrigCtorType == Ctor_Complete)(static_cast <bool> (OrigCtorType == Ctor_Base || OrigCtorType
 == Ctor_Complete) ? void (0) : __assert_fail ("OrigCtorType == Ctor_Base || OrigCtorType == Ctor_Complete"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1439, __extension__ __PRETTY_FUNCTION__
));
    if (OrigCtorType == Ctor_Base)
      CanonicalGD = GlobalDecl(CD, Ctor_Complete);
  }
}

// In CUDA/HIP device compilation with -fgpu-rdc, the mangled name of a
// static device variable depends on whether the variable is referenced by
// a host or device host function. Therefore the mangled name cannot be
// cached.
if (!LangOpts.CUDAIsDevice ||
    !getContext().mayExternalizeStaticVar(GD.getDecl())) {
  auto FoundName = MangledDeclNames.find(CanonicalGD);
  if (FoundName != MangledDeclNames.end())
    return FoundName->second;
}

// Keep the first result in the case of a mangling collision.
const auto *ND = cast<NamedDecl>(GD.getDecl());
std::string MangledName = getMangledNameImpl(*this, GD, ND);

// Ensure either we have different ABIs between host and device compilations,
// says host compilation following MSVC ABI but device compilation follows
// Itanium C++ ABI or, if they follow the same ABI, kernel names after
// mangling should be the same after name stubbing. The later checking is
// very important as the device kernel name being mangled in host-compilation
// is used to resolve the device binaries to be executed. Inconsistent naming
// result in undefined behavior. Even though we cannot check that naming
// directly between host- and device-compilations, the host- and
// device-mangling in host compilation could help catching certain ones.
assert(!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
       getLangOpts().CUDAIsDevice ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
       (getContext().getAuxTargetInfo() &&(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
        (getContext().getAuxTargetInfo()->getCXXABI() !=(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
         getContext().getTargetInfo().getCXXABI())) ||(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
       getCUDARuntime().getDeviceSideName(ND) ==(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
           getMangledNameImpl((static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
               *this,(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
               GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel),(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
))
               ND))(static_cast <bool> (!isa<FunctionDecl>(ND) || !ND
->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice
 || (getContext().getAuxTargetInfo() && (getContext()
.getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo
().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) ==
 getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind
::Kernel), ND)) ? void (0) : __assert_fail ("!isa<FunctionDecl>(ND) || !ND->hasAttr<CUDAGlobalAttr>() || getLangOpts().CUDAIsDevice || (getContext().getAuxTargetInfo() && (getContext().getAuxTargetInfo()->getCXXABI() != getContext().getTargetInfo().getCXXABI())) || getCUDARuntime().getDeviceSideName(ND) == getMangledNameImpl( *this, GD.getWithKernelReferenceKind(KernelReferenceKind::Kernel), ND)"
, "clang/lib/CodeGen/CodeGenModule.cpp", 1478, __extension__ __PRETTY_FUNCTION__
));

auto Result = Manglings.insert(std::make_pair(MangledName, GD));
return MangledDeclNames[CanonicalGD] = Result.first->first();
1482}

1484StringRef CodeGenModule::getBlockMangledName(GlobalDecl GD,
                                           const BlockDecl *BD) {
MangleContext &MangleCtx = getCXXABI().getMangleContext();
const Decl *D = GD.getDecl();

SmallString<256> Buffer;
llvm::raw_svector_ostream Out(Buffer);
if (!D)
  MangleCtx.mangleGlobalBlock(BD,
    dyn_cast_or_null<VarDecl>(initializedGlobalDecl.getDecl()), Out);
else if (const auto *CD = dyn_cast<CXXConstructorDecl>(D))
  MangleCtx.mangleCtorBlock(CD, GD.getCtorType(), BD, Out);
else if (const auto *DD = dyn_cast<CXXDestructorDecl>(D))
  MangleCtx.mangleDtorBlock(DD, GD.getDtorType(), BD, Out);
else
  MangleCtx.mangleBlock(cast<DeclContext>(D), BD, Out);

auto Result = Manglings.insert(std::make_pair(Out.str(), BD));
return Result.first->first();
1503}

1505llvm::GlobalValue *CodeGenModule::GetGlobalValue(StringRef Name) {
return getModule().getNamedValue(Name);
1507}

1509/// AddGlobalCtor - Add a function to the list that will be called before
1510/// main() runs.
1511void CodeGenModule::AddGlobalCtor(llvm::Function *Ctor, int Priority,
                                llvm::Constant *AssociatedData) {
// FIXME: Type coercion of void()* types.
GlobalCtors.push_back(Structor(Priority, Ctor, AssociatedData));
1515}

1517/// AddGlobalDtor - Add a function to the list that will be called
1518/// when the module is unloaded.
1519void CodeGenModule::AddGlobalDtor(llvm::Function *Dtor, int Priority,
                                bool IsDtorAttrFunc) {
if (CodeGenOpts.RegisterGlobalDtorsWithAtExit &&
    (!getContext().getTargetInfo().getTriple().isOSAIX() || IsDtorAttrFunc)) {
  DtorsUsingAtExit[Priority].push_back(Dtor);
  return;
}

// FIXME: Type coercion of void()* types.
GlobalDtors.push_back(Structor(Priority, Dtor, nullptr));
1529}

1531void CodeGenModule::EmitCtorList(CtorList &Fns, const char *GlobalName) {
if (Fns.empty()) return;

// Ctor function type is void()*.
llvm::FunctionType* CtorFTy = llvm::FunctionType::get(VoidTy, false);
llvm::Type *CtorPFTy = llvm::PointerType::get(CtorFTy,
    TheModule.getDataLayout().getProgramAddressSpace());

// Get the type of a ctor entry, { i32, void ()*, i8* }.
llvm::StructType *CtorStructTy = llvm::StructType::get(
    Int32Ty, CtorPFTy, VoidPtrTy);

// Construct the constructor and destructor arrays.
ConstantInitBuilder builder(*this);
auto ctors = builder.beginArray(CtorStructTy);
for (const auto &I : Fns) {
  auto ctor = ctors.beginStruct(CtorStructTy);
  ctor.addInt(Int32Ty, I.Priority);
  ctor.add(llvm::ConstantExpr::getBitCast(I.Initializer, CtorPFTy));
  if (I.AssociatedData)
    ctor.add(llvm::ConstantExpr::getBitCast(I.AssociatedData, VoidPtrTy));
  else
    ctor.addNullPointer(VoidPtrTy);
  ctor.finishAndAddTo(ctors);
}

auto list =
  ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
                              /*constant*/ false,
                              llvm::GlobalValue::AppendingLinkage);

// The LTO linker doesn't seem to like it when we set an alignment
// on appending variables.  Take it off as a workaround.
list->setAlignment(llvm::None);

Fns.clear();
1567}

1569llvm::GlobalValue::LinkageTypes
1570CodeGenModule::getFunctionLinkage(GlobalDecl GD) {
const auto *D = cast<FunctionDecl>(GD.getDecl());

GVALinkage Linkage = getContext().GetGVALinkageForFunction(D);

if (const auto *Dtor = dyn_cast<CXXDestructorDecl>(D))
  return getCXXABI().getCXXDestructorLinkage(Linkage, Dtor, GD.getDtorType());

if (isa<CXXConstructorDecl>(D) &&
    cast<CXXConstructorDecl>(D)->isInheritingConstructor() &&
    Context.getTargetInfo().getCXXABI().isMicrosoft()) {
  // Our approach to inheriting constructors is fundamentally different from
  // that used by the MS ABI, so keep our inheriting constructor thunks
  // internal rather than trying to pick an unambiguous mangling for them.
  return llvm::GlobalValue::InternalLinkage;
}

return getLLVMLinkageForDeclarator(D, Linkage, /*IsConstantVariable=*/false);
1588}

1590llvm::ConstantInt *CodeGenModule::CreateCrossDsoCfiTypeId(llvm::Metadata *MD) {
llvm::MDString *MDS = dyn_cast<llvm::MDString>(MD);
if (!MDS) return nullptr;

return llvm::ConstantInt::get(Int64Ty, llvm::MD5Hash(MDS->getString()));
1595}

1597void CodeGenModule::SetLLVMFunctionAttributes(GlobalDecl GD,
                                            const CGFunctionInfo &Info,
                                            llvm::Function *F, bool IsThunk) {
unsigned CallingConv;
llvm::AttributeList PAL;
ConstructAttributeList(F->getName(), Info, GD, PAL, CallingConv,
                       /*AttrOnCallSite=*/false, IsThunk);
F->setAttributes(PAL);
F->setCallingConv(static_cast<llvm::CallingConv::ID>(CallingConv));
1606}

1608static void removeImageAccessQualifier(std::string& TyName) {
std::string ReadOnlyQual("__read_only");
std::string::size_type ReadOnlyPos = TyName.find(ReadOnlyQual);
if (ReadOnlyPos != std::string::npos)
  // "+ 1" for the space after access qualifier.
  TyName.erase(ReadOnlyPos, ReadOnlyQual.size() + 1);
else {
  std::string WriteOnlyQual("__write_only");
  std::string::size_type WriteOnlyPos = TyName.find(WriteOnlyQual);
  if (WriteOnlyPos != std::string::npos)
    TyName.erase(WriteOnlyPos, WriteOnlyQual.size() + 1);
  else {
    std::string ReadWriteQual("__read_write");
    std::string::size_type ReadWritePos = TyName.find(ReadWriteQual);
    if (ReadWritePos != std::string::npos)
      TyName.erase(ReadWritePos, ReadWriteQual.size() + 1);
  }
}
1626}

1628// Returns the address space id that should be produced to the
1629// kernel_arg_addr_space metadata. This is always fixed to the ids
1630// as specified in the SPIR 2.0 specification in order to differentiate
1631// for example in clGetKernelArgInfo() implementation between the address
1632// spaces with targets without unique mapping to the OpenCL address spaces
1633// (basically all single AS CPUs).
1634static unsigned ArgInfoAddressSpace(LangAS AS) {
switch (AS) {
case LangAS::opencl_global:
  return 1;
case LangAS::opencl_constant:
  return 2;
case LangAS::opencl_local:
  return 3;
case LangAS::opencl_generic:
  return 4; // Not in SPIR 2.0 specs.
case LangAS::opencl_global_device:
  return 5;
case LangAS::opencl_global_host:
  return 6;
default:
  return 0; // Assume private.
}
1651}

1653void CodeGenModule::GenOpenCLArgMetadata(llvm::Function *Fn,
                                       const FunctionDecl *FD,
                                       CodeGenFunction *CGF) {
assert(((FD && CGF) || (!FD && !CGF)) &&(static_cast <bool> (((FD && CGF) || (!FD &&
 !CGF)) && "Incorrect use - FD and CGF should either be both null or not!"
) ? void (0) : __assert_fail ("((FD && CGF) || (!FD && !CGF)) && \"Incorrect use - FD and CGF should either be both null or not!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1657, __extension__ __PRETTY_FUNCTION__
))
       "Incorrect use - FD and CGF should either be both null or not!")(static_cast <bool> (((FD && CGF) || (!FD &&
 !CGF)) && "Incorrect use - FD and CGF should either be both null or not!"
) ? void (0) : __assert_fail ("((FD && CGF) || (!FD && !CGF)) && \"Incorrect use - FD and CGF should either be both null or not!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 1657, __extension__ __PRETTY_FUNCTION__
));
// Create MDNodes that represent the kernel arg metadata.
// Each MDNode is a list in the form of "key", N number of values which is
// the same number of values as their are kernel arguments.

const PrintingPolicy &Policy = Context.getPrintingPolicy();

// MDNode for the kernel argument address space qualifiers.
SmallVector<llvm::Metadata *, 8> addressQuals;

// MDNode for the kernel argument access qualifiers (images only).
SmallVector<llvm::Metadata *, 8> accessQuals;

// MDNode for the kernel argument type names.
SmallVector<llvm::Metadata *, 8> argTypeNames;

// MDNode for the kernel argument base type names.
SmallVector<llvm::Metadata *, 8> argBaseTypeNames;

// MDNode for the kernel argument type qualifiers.
SmallVector<llvm::Metadata *, 8> argTypeQuals;

// MDNode for the kernel argument names.
SmallVector<llvm::Metadata *, 8> argNames;

if (FD && CGF)
  for (unsigned i = 0, e = FD->getNumParams(); i != e; ++i) {
    const ParmVarDecl *parm = FD->getParamDecl(i);
    QualType ty = parm->getType();
    std::string typeQuals;

    // Get image and pipe access qualifier:
    if (ty->isImageType() || ty->isPipeType()) {
      const Decl *PDecl = parm;
      if (auto *TD = dyn_cast<TypedefType>(ty))
        PDecl = TD->getDecl();
      const OpenCLAccessAttr *A = PDecl->getAttr<OpenCLAccessAttr>();
      if (A && A->isWriteOnly())
        accessQuals.push_back(llvm::MDString::get(VMContext, "write_only"));
      else if (A && A->isReadWrite())
        accessQuals.push_back(llvm::MDString::get(VMContext, "read_write"));
      else
        accessQuals.push_back(llvm::MDString::get(VMContext, "read_only"));
    } else
      accessQuals.push_back(llvm::MDString::get(VMContext, "none"));

    // Get argument name.
    argNames.push_back(llvm::MDString::get(VMContext, parm->getName()));

    auto getTypeSpelling = [&](QualType Ty) {
      auto typeName = Ty.getUnqualifiedType().getAsString(Policy);

      if (Ty.isCanonical()) {
        StringRef typeNameRef = typeName;
        // Turn "unsigned type" to "utype"
        if (typeNameRef.consume_front("unsigned "))
          return std::string("u") + typeNameRef.str();
        if (typeNameRef.consume_front("signed "))
          return typeNameRef.str();
      }

      return typeName;
    };

    if (ty->isPointerType()) {
      QualType pointeeTy = ty->getPointeeType();

      // Get address qualifier.
      addressQuals.push_back(
          llvm::ConstantAsMetadata::get(CGF->Builder.getInt32(
              ArgInfoAddressSpace(pointeeTy.getAddressSpace()))));

      // Get argument type name.
      std::string typeName = getTypeSpelling(pointeeTy) + "*";
      std::string baseTypeName =
          getTypeSpelling(pointeeTy.getCanonicalType()) + "*";
      argTypeNames.push_back(llvm::MDString::get(VMContext, typeName));
      argBaseTypeNames.push_back(
          llvm::MDString::get(VMContext, baseTypeName));

      // Get argument type qualifiers:
      if (ty.isRestrictQualified())
        typeQuals = "restrict";
      if (pointeeTy.isConstQualified() ||
          (pointeeTy.getAddressSpace() == LangAS::opencl_constant))
        typeQuals += typeQuals.empty() ? "const" : " const";
      if (pointeeTy.isVolatileQualified())
        typeQuals += typeQuals.empty() ? "volatile" : " volatile";
    } else {
      uint32_t AddrSpc = 0;
      bool isPipe = ty->isPipeType();
      if (ty->isImageType() || isPipe)
        AddrSpc = ArgInfoAddressSpace(LangAS::opencl_global);

      addressQuals.push_back(
          llvm::ConstantAsMetadata::get(CGF->Builder.getInt32(AddrSpc)));

      // Get argument type name.
      ty = isPipe ? ty->castAs<PipeType>()->getElementType() : ty;
      std::string typeName = getTypeSpelling(ty);
      std::string baseTypeName = getTypeSpelling(ty.getCanonicalType());

      // Remove access qualifiers on images
      // (as they are inseparable from type in clang implementation,
      // but OpenCL spec provides a special query to get access qualifier
      // via clGetKernelArgInfo with CL_KERNEL_ARG_ACCESS_QUALIFIER):
      if (ty->isImageType()) {
        removeImageAccessQualifier(typeName);
        removeImageAccessQualifier(baseTypeName);
      }

      argTypeNames.push_back(llvm::MDString::get(VMContext, typeName));
      argBaseTypeNames.push_back(
          llvm::MDString::get(VMContext, baseTypeName));

      if (isPipe)
        typeQuals = "pipe";
    }
    argTypeQuals.push_back(llvm::MDString::get(VMContext, typeQuals));
  }

Fn->setMetadata("kernel_arg_addr_space",
                llvm::MDNode::get(VMContext, addressQuals));
Fn->setMetadata("kernel_arg_access_qual",
                llvm::MDNode::get(VMContext, accessQuals));
Fn->setMetadata("kernel_arg_type",
                llvm::MDNode::get(VMContext, argTypeNames));
Fn->setMetadata("kernel_arg_base_type",
                llvm::MDNode::get(VMContext, argBaseTypeNames));
Fn->setMetadata("kernel_arg_type_qual",
                llvm::MDNode::get(VMContext, argTypeQuals));
if (getCodeGenOpts().EmitOpenCLArgMetadata)
  Fn->setMetadata("kernel_arg_name",
                  llvm::MDNode::get(VMContext, argNames));
1791}

1793/// Determines whether the language options require us to model
1794/// unwind exceptions.  We treat -fexceptions as mandating this
1795/// except under the fragile ObjC ABI with only ObjC exceptions
1796/// enabled.  This means, for example, that C with -fexceptions
1797/// enables this.
1798static bool hasUnwindExceptions(const LangOptions &LangOpts) {
// If exceptions are completely disabled, obviously this is false.
if (!LangOpts.Exceptions) return false;

// If C++ exceptions are enabled, this is true.
if (LangOpts.CXXExceptions) return true;

// If ObjC exceptions are enabled, this depends on the ABI.
if (LangOpts.ObjCExceptions) {
  return LangOpts.ObjCRuntime.hasUnwindExceptions();
}

return true;
1811}

1813static bool requiresMemberFunctionPointerTypeMetadata(CodeGenModule &CGM,
                                                    const CXXMethodDecl *MD) {
// Check that the type metadata can ever actually be used by a call.
if (!CGM.getCodeGenOpts().LTOUnit ||
    !CGM.HasHiddenLTOVisibility(MD->getParent()))
  return false;

// Only functions whose address can be taken with a member function pointer
// need this sort of type metadata.
return !MD->isStatic() && !MD->isVirtual() && !isa<CXXConstructorDecl>(MD) &&
       !isa<CXXDestructorDecl>(MD);
1824}

1826std::vector<const CXXRecordDecl *>
1827CodeGenModule::getMostBaseClasses(const CXXRecordDecl *RD) {
llvm::SetVector<const CXXRecordDecl *> MostBases;

std::function<void (const CXXRecordDecl *)> CollectMostBases;
CollectMostBases = [&](const CXXRecordDecl *RD) {
  if (RD->getNumBases() == 0)
    MostBases.insert(RD);
  for (const CXXBaseSpecifier &B : RD->bases())
    CollectMostBases(B.getType()->getAsCXXRecordDecl());
};
CollectMostBases(RD);
return MostBases.takeVector();
1839}

1841void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
                                                         llvm::Function *F) {
llvm::AttrBuilder B(F->getContext());

if (CodeGenOpts.UnwindTables)
  B.addUWTableAttr(llvm::UWTableKind(CodeGenOpts.UnwindTables));

if (CodeGenOpts.StackClashProtector)
  B.addAttribute("probe-stack", "inline-asm");

if (!hasUnwindExceptions(LangOpts))
  B.addAttribute(llvm::Attribute::NoUnwind);

if (!D || !D->hasAttr<NoStackProtectorAttr>()) {
  if (LangOpts.getStackProtector() == LangOptions::SSPOn)
    B.addAttribute(llvm::Attribute::StackProtect);
  else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
    B.addAttribute(llvm::Attribute::StackProtectStrong);
  else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
    B.addAttribute(llvm::Attribute::StackProtectReq);
}

if (!D) {
  // If we don't have a declaration to control inlining, the function isn't
  // explicitly marked as alwaysinline for semantic reasons, and inlining is
  // disabled, mark the function as noinline.
  if (!F->hasFnAttribute(llvm::Attribute::AlwaysInline) &&
      CodeGenOpts.getInlining() == CodeGenOptions::OnlyAlwaysInlining)
    B.addAttribute(llvm::Attribute::NoInline);

  F->addFnAttrs(B);
  return;
}

// Track whether we need to add the optnone LLVM attribute,
// starting with the default for this optimization level.
bool ShouldAddOptNone =
    !CodeGenOpts.DisableO0ImplyOptNone && CodeGenOpts.OptimizationLevel == 0;
// We can't add optnone in the following cases, it won't pass the verifier.
ShouldAddOptNone &= !D->hasAttr<MinSizeAttr>();
ShouldAddOptNone &= !D->hasAttr<AlwaysInlineAttr>();

// Add optnone, but do so only if the function isn't always_inline.
if ((ShouldAddOptNone || D->hasAttr<OptimizeNoneAttr>()) &&
    !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
  B.addAttribute(llvm::Attribute::OptimizeNone);

  // OptimizeNone implies noinline; we should not be inlining such functions.
  B.addAttribute(llvm::Attribute::NoInline);

  // We still need to handle naked functions even though optnone subsumes
  // much of their semantics.
  if (D->hasAttr<NakedAttr>())
    B.addAttribute(llvm::Attribute::Naked);

  // OptimizeNone wins over OptimizeForSize and MinSize.
  F->removeFnAttr(llvm::Attribute::OptimizeForSize);
  F->removeFnAttr(llvm::Attribute::MinSize);
} else if (D->hasAttr<NakedAttr>()) {
  // Naked implies noinline: we should not be inlining such functions.
  B.addAttribute(llvm::Attribute::Naked);
  B.addAttribute(llvm::Attribute::NoInline);
} else if (D->hasAttr<NoDuplicateAttr>()) {
  B.addAttribute(llvm::Attribute::NoDuplicate);
} else if (D->hasAttr<NoInlineAttr>() && !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
  // Add noinline if the function isn't always_inline.
  B.addAttribute(llvm::Attribute::NoInline);
} else if (D->hasAttr<AlwaysInlineAttr>() &&
           !F->hasFnAttribute(llvm::Attribute::NoInline)) {
  // (noinline wins over always_inline, and we can't specify both in IR)
  B.addAttribute(llvm::Attribute::AlwaysInline);
} else if (CodeGenOpts.getInlining() == CodeGenOptions::OnlyAlwaysInlining) {
  // If we're not inlining, then force everything that isn't always_inline to
  // carry an explicit noinline attribute.
  if (!F->hasFnAttribute(llvm::Attribute::AlwaysInline))
    B.addAttribute(llvm::Attribute::NoInline);
} else {
  // Otherwise, propagate the inline hint attribute and potentially use its
  // absence to mark things as noinline.
  if (auto *FD = dyn_cast<FunctionDecl>(D)) {
    // Search function and template pattern redeclarations for inline.
    auto CheckForInline = [](const FunctionDecl *FD) {
      auto CheckRedeclForInline = [](const FunctionDecl *Redecl) {
        return Redecl->isInlineSpecified();
      };
      if (any_of(FD->redecls(), CheckRedeclForInline))
        return true;
      const FunctionDecl *Pattern = FD->getTemplateInstantiationPattern();
      if (!Pattern)
        return false;
      return any_of(Pattern->redecls(), CheckRedeclForInline);
    };
    if (CheckForInline(FD)) {
      B.addAttribute(llvm::Attribute::InlineHint);
    } else if (CodeGenOpts.getInlining() ==
                   CodeGenOptions::OnlyHintInlining &&
               !FD->isInlined() &&
               !F->hasFnAttribute(llvm::Attribute::AlwaysInline)) {
      B.addAttribute(llvm::Attribute::NoInline);
    }
  }
}

// Add other optimization related attributes if we are optimizing this
// function.
if (!D->hasAttr<OptimizeNoneAttr>()) {
  if (D->hasAttr<ColdAttr>()) {
    if (!ShouldAddOptNone)
      B.addAttribute(llvm::Attribute::OptimizeForSize);
    B.addAttribute(llvm::Attribute::Cold);
  }
  if (D->hasAttr<HotAttr>())
    B.addAttribute(llvm::Attribute::Hot);
  if (D->hasAttr<MinSizeAttr>())
    B.addAttribute(llvm::Attribute::MinSize);
}

F->addFnAttrs(B);

unsigned alignment = D->getMaxAlignment() / Context.getCharWidth();
if (alignment)
  F->setAlignment(llvm::Align(alignment));

if (!D->hasAttr<AlignedAttr>())
  if (LangOpts.FunctionAlignment)
    F->setAlignment(llvm::Align(1ull << LangOpts.FunctionAlignment));

// Some C++ ABIs require 2-byte alignment for member functions, in order to
// reserve a bit for differentiating between virtual and non-virtual member
// functions. If the current target's C++ ABI requires this and this is a
// member function, set its alignment accordingly.
if (getTarget().getCXXABI().areMemberFunctionsAligned()) {
  if (F->getAlignment() < 2 && isa<CXXMethodDecl>(D))
    F->setAlignment(llvm::Align(2));
}

// In the cross-dso CFI mode with canonical jump tables, we want !type
// attributes on definitions only.
if (CodeGenOpts.SanitizeCfiCrossDso &&
    CodeGenOpts.SanitizeCfiCanonicalJumpTables) {
  if (auto *FD = dyn_cast<FunctionDecl>(D)) {
    // Skip available_externally functions. They won't be codegen'ed in the
    // current module anyway.
    if (getContext().GetGVALinkageForFunction(FD) != GVA_AvailableExternally)
      CreateFunctionTypeMetadataForIcall(FD, F);
  }
}

// Emit type metadata on member functions for member function pointer checks.
// These are only ever necessary on definitions; we're guaranteed that the
// definition will be present in the LTO unit as a result of LTO visibility.
auto *MD = dyn_cast<CXXMethodDecl>(D);
if (MD && requiresMemberFunctionPointerTypeMetadata(*this, MD)) {
  for (const CXXRecordDecl *Base : getMostBaseClasses(MD->getParent())) {
    llvm::Metadata *Id =
        CreateMetadataIdentifierForType(Context.getMemberPointerType(
            MD->getType(), Context.getRecordType(Base).getTypePtr()));
    F->addTypeMetadata(0, Id);
  }
}
2001}

2003void CodeGenModule::setLLVMFunctionFEnvAttributes(const FunctionDecl *D,
                                                llvm::Function *F) {
if (D->hasAttr<StrictFPAttr>()) {
  llvm::AttrBuilder FuncAttrs(F->getContext());
  FuncAttrs.addAttribute("strictfp");
  F->addFnAttrs(FuncAttrs);
}
2010}

2012void CodeGenModule::SetCommonAttributes(GlobalDecl GD, llvm::GlobalValue *GV) {
const Decl *D = GD.getDecl();
if (isa_and_nonnull<NamedDecl>(D))
  setGVProperties(GV, GD);
else
  GV->setVisibility(llvm::GlobalValue::DefaultVisibility);

if (D && D->hasAttr<UsedAttr>())
  addUsedOrCompilerUsedGlobal(GV);

if (CodeGenOpts.KeepStaticConsts && D && isa<VarDecl>(D)) {
  const auto *VD = cast<VarDecl>(D);
  if (VD->getType().isConstQualified() &&
      VD->getStorageDuration() == SD_Static)
    addUsedOrCompilerUsedGlobal(GV);
}
2028}

2030bool CodeGenModule::GetCPUAndFeaturesAttributes(GlobalDecl GD,
                                              llvm::AttrBuilder &Attrs) {
// Add target-cpu and target-features attributes to functions. If
// we have a decl for the function and it has a target attribute then
// parse that and add it to the feature set.
StringRef TargetCPU = getTarget().getTargetOpts().CPU;
StringRef TuneCPU = getTarget().getTargetOpts().TuneCPU;
std::vector<std::string> Features;
const auto *FD = dyn_cast_or_null<FunctionDecl>(GD.getDecl());
FD = FD ? FD->getMostRecentDecl() : FD;
const auto *TD = FD ? FD->getAttr<TargetAttr>() : nullptr;
const auto *SD = FD ? FD->getAttr<CPUSpecificAttr>() : nullptr;
const auto *TC = FD ? FD->getAttr<TargetClonesAttr>() : nullptr;
bool AddedAttr = false;
if (TD || SD || TC) {
  llvm::StringMap<bool> FeatureMap;
  getContext().getFunctionFeatureMap(FeatureMap, GD);

  // Produce the canonical string for this set of features.
  for (const llvm::StringMap<bool>::value_type &Entry : FeatureMap)
    Features.push_back((Entry.getValue() ? "+" : "-") + Entry.getKey().str());

  // Now add the target-cpu and target-features to the function.
  // While we populated the feature map above, we still need to
  // get and parse the target attribute so we can get the cpu for
  // the function.
  if (TD) {
    ParsedTargetAttr ParsedAttr = TD->parse();
    if (!ParsedAttr.Architecture.empty() &&
        getTarget().isValidCPUName(ParsedAttr.Architecture)) {
      TargetCPU = ParsedAttr.Architecture;
      TuneCPU = ""; // Clear the tune CPU.
    }
    if (!ParsedAttr.Tune.empty() &&
        getTarget().isValidCPUName(ParsedAttr.Tune))
      TuneCPU = ParsedAttr.Tune;
  }

  if (SD) {
    // Apply the given CPU name as the 'tune-cpu' so that the optimizer can
    // favor this processor.
    TuneCPU = getTarget().getCPUSpecificTuneName(
        SD->getCPUName(GD.getMultiVersionIndex())->getName());
  }
} else {
  // Otherwise just add the existing target cpu and target features to the
  // function.
  Features = getTarget().getTargetOpts().Features;
}

if (!TargetCPU.empty()) {
  Attrs.addAttribute("target-cpu", TargetCPU);
  AddedAttr = true;
}
if (!TuneCPU.empty()) {
  Attrs.addAttribute("tune-cpu", TuneCPU);
  AddedAttr = true;
}
if (!Features.empty()) {
  llvm::sort(Features);
  Attrs.addAttribute("target-features", llvm::join(Features, ","));
  AddedAttr = true;
}

return AddedAttr;
2095}

2097void CodeGenModule::setNonAliasAttributes(GlobalDecl GD,
                                        llvm::GlobalObject *GO) {
const Decl *D = GD.getDecl();
SetCommonAttributes(GD, GO);

if (D) {
  if (auto *GV = dyn_cast<llvm::GlobalVariable>(GO)) {
    if (D->hasAttr<RetainAttr>())
      addUsedGlobal(GV);
    if (auto *SA = D->getAttr<PragmaClangBSSSectionAttr>())
      GV->addAttribute("bss-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangDataSectionAttr>())
      GV->addAttribute("data-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangRodataSectionAttr>())
      GV->addAttribute("rodata-section", SA->getName());
    if (auto *SA = D->getAttr<PragmaClangRelroSectionAttr>())
      GV->addAttribute("relro-section", SA->getName());
  }

  if (auto *F = dyn_cast<llvm::Function>(GO)) {
    if (D->hasAttr<RetainAttr>())
      addUsedGlobal(F);
    if (auto *SA = D->getAttr<PragmaClangTextSectionAttr>())
      if (!D->getAttr<SectionAttr>())
        F->addFnAttr("implicit-section-name", SA->getName());

    llvm::AttrBuilder Attrs(F->getContext());
    if (GetCPUAndFeaturesAttributes(GD, Attrs)) {
      // We know that GetCPUAndFeaturesAttributes will always have the
      // newest set, since it has the newest possible FunctionDecl, so the
      // new ones should replace the old.
      llvm::AttributeMask RemoveAttrs;
      RemoveAttrs.addAttribute("target-cpu");
      RemoveAttrs.addAttribute("target-features");
      RemoveAttrs.addAttribute("tune-cpu");
      F->removeFnAttrs(RemoveAttrs);
      F->addFnAttrs(Attrs);
    }
  }

  if (const auto *CSA = D->getAttr<CodeSegAttr>())
    GO->setSection(CSA->getName());
  else if (const auto *SA = D->getAttr<SectionAttr>())
    GO->setSection(SA->getName());
}

getTargetCodeGenInfo().setTargetAttributes(D, GO, *this);
2144}

2146void CodeGenModule::SetInternalFunctionAttributes(GlobalDecl GD,
                                                llvm::Function *F,
                                                const CGFunctionInfo &FI) {
const Decl *D = GD.getDecl();
SetLLVMFunctionAttributes(GD, FI, F, /*IsThunk=*/false);
SetLLVMFunctionAttributesForDefinition(D, F);

F->setLinkage(llvm::Function::InternalLinkage);

setNonAliasAttributes(GD, F);
2156}

2158static void setLinkageForGV(llvm::GlobalValue *GV, const NamedDecl *ND) {
// Set linkage and visibility in case we never see a definition.
LinkageInfo LV = ND->getLinkageAndVisibility();
// Don't set internal linkage on declarations.
// "extern_weak" is overloaded in LLVM; we probably should have
// separate linkage types for this.
if (isExternallyVisible(LV.getLinkage()) &&
    (ND->hasAttr<WeakAttr>() || ND->isWeakImported()))
  GV->setLinkage(llvm::GlobalValue::ExternalWeakLinkage);
2167}

2169void CodeGenModule::CreateFunctionTypeMetadataForIcall(const FunctionDecl *FD,
                                                     llvm::Function *F) {
// Only if we are checking indirect calls.
if (!LangOpts.Sanitize.has(SanitizerKind::CFIICall))
  return;

// Non-static class methods are handled via vtable or member function pointer
// checks elsewhere.
if (isa<CXXMethodDecl>(FD) && !cast<CXXMethodDecl>(FD)->isStatic())
  return;

llvm::Metadata *MD = CreateMetadataIdentifierForType(FD->getType());
F->addTypeMetadata(0, MD);
F->addTypeMetadata(0, CreateMetadataIdentifierGeneralized(FD->getType()));

// Emit a hash-based bit set entry for cross-DSO calls.
if (CodeGenOpts.SanitizeCfiCrossDso)
  if (auto CrossDsoTypeId = CreateCrossDsoCfiTypeId(MD))
    F->addTypeMetadata(0, llvm::ConstantAsMetadata::get(CrossDsoTypeId));
2188}

2190void CodeGenModule::SetFunctionAttributes(GlobalDecl GD, llvm::Function *F,
                                        bool IsIncompleteFunction,
                                        bool IsThunk) {

if (llvm::Intrinsic::ID IID = F->getIntrinsicID()) {
  // If this is an intrinsic function, set the function's attributes
  // to the intrinsic's attributes.
  F->setAttributes(llvm::Intrinsic::getAttributes(getLLVMContext(), IID));
  return;
}

const auto *FD = cast<FunctionDecl>(GD.getDecl());

if (!IsIncompleteFunction)
  SetLLVMFunctionAttributes(GD, getTypes().arrangeGlobalDeclaration(GD), F,
                            IsThunk);

// Add the Returned attribute for "this", except for iOS 5 and earlier
// where substantial code, including the libstdc++ dylib, was compiled with
// GCC and does not actually return "this".
if (!IsThunk && getCXXABI().HasThisReturn(GD) &&
    !(getTriple().isiOS() && getTriple().isOSVersionLT(6))) {
  assert(!F->arg_empty() &&(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2215, __extension__ __PRETTY_FUNCTION__
))
         F->arg_begin()->getType()(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2215, __extension__ __PRETTY_FUNCTION__
))
           ->canLosslesslyBitCastTo(F->getReturnType()) &&(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2215, __extension__ __PRETTY_FUNCTION__
))
         "unexpected this return")(static_cast <bool> (!F->arg_empty() && F->
arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType
()) && "unexpected this return") ? void (0) : __assert_fail
 ("!F->arg_empty() && F->arg_begin()->getType() ->canLosslesslyBitCastTo(F->getReturnType()) && \"unexpected this return\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2215, __extension__ __PRETTY_FUNCTION__
));
  F->addParamAttr(0, llvm::Attribute::Returned);
}

// Only a few attributes are set on declarations; these may later be
// overridden by a definition.

setLinkageForGV(F, FD);
setGVProperties(F, FD);

// Setup target-specific attributes.
if (!IsIncompleteFunction && F->isDeclaration())
  getTargetCodeGenInfo().setTargetAttributes(FD, F, *this);

if (const auto *CSA = FD->getAttr<CodeSegAttr>())
  F->setSection(CSA->getName());
else if (const auto *SA = FD->getAttr<SectionAttr>())
   F->setSection(SA->getName());

if (const auto *EA = FD->getAttr<ErrorAttr>()) {
  if (EA->isError())
    F->addFnAttr("dontcall-error", EA->getUserDiagnostic());
  else if (EA->isWarning())
    F->addFnAttr("dontcall-warn", EA->getUserDiagnostic());
}

// If we plan on emitting this inline builtin, we can't treat it as a builtin.
if (FD->isInlineBuiltinDeclaration()) {
  const FunctionDecl *FDBody;
  bool HasBody = FD->hasBody(FDBody);
  (void)HasBody;
  assert(HasBody && "Inline builtin declarations should always have an "(static_cast <bool> (HasBody && "Inline builtin declarations should always have an "
 "available body!") ? void (0) : __assert_fail ("HasBody && \"Inline builtin declarations should always have an \" \"available body!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2247, __extension__ __PRETTY_FUNCTION__
))
                    "available body!")(static_cast <bool> (HasBody && "Inline builtin declarations should always have an "
 "available body!") ? void (0) : __assert_fail ("HasBody && \"Inline builtin declarations should always have an \" \"available body!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2247, __extension__ __PRETTY_FUNCTION__
));
  if (shouldEmitFunction(FDBody))
    F->addFnAttr(llvm::Attribute::NoBuiltin);
}

if (FD->isReplaceableGlobalAllocationFunction()) {
  // A replaceable global allocation function does not act like a builtin by
  // default, only if it is invoked by a new-expression or delete-expression.
  F->addFnAttr(llvm::Attribute::NoBuiltin);
}

if (isa<CXXConstructorDecl>(FD) || isa<CXXDestructorDecl>(FD))
  F->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
else if (const auto *MD = dyn_cast<CXXMethodDecl>(FD))
  if (MD->isVirtual())
    F->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);

// Don't emit entries for function declarations in the cross-DSO mode. This
// is handled with better precision by the receiving DSO. But if jump tables
// are non-canonical then we need type metadata in order to produce the local
// jump table.
if (!CodeGenOpts.SanitizeCfiCrossDso ||
    !CodeGenOpts.SanitizeCfiCanonicalJumpTables)
  CreateFunctionTypeMetadataForIcall(FD, F);

if (getLangOpts().OpenMP && FD->hasAttr<OMPDeclareSimdDeclAttr>())
  getOpenMPRuntime().emitDeclareSimdFunction(FD, F);

if (const auto *CB = FD->getAttr<CallbackAttr>()) {
  // Annotate the callback behavior as metadata:
  //  - The callback callee (as argument number).
  //  - The callback payloads (as argument numbers).
  llvm::LLVMContext &Ctx = F->getContext();
  llvm::MDBuilder MDB(Ctx);

  // The payload indices are all but the first one in the encoding. The first
  // identifies the callback callee.
  int CalleeIdx = *CB->encoding_begin();
  ArrayRef<int> PayloadIndices(CB->encoding_begin() + 1, CB->encoding_end());
  F->addMetadata(llvm::LLVMContext::MD_callback,
                 *llvm::MDNode::get(Ctx, {MDB.createCallbackEncoding(
                                             CalleeIdx, PayloadIndices,
                                             /* VarArgsArePassed */ false)}));
}
2291}

2293void CodeGenModule::addUsedGlobal(llvm::GlobalValue *GV) {
assert((isa<llvm::Function>(GV) || !GV->isDeclaration()) &&(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2295, __extension__ __PRETTY_FUNCTION__
))
       "Only globals with definition can force usage.")(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2295, __extension__ __PRETTY_FUNCTION__
));
LLVMUsed.emplace_back(GV);
2297}

2299void CodeGenModule::addCompilerUsedGlobal(llvm::GlobalValue *GV) {
assert(!GV->isDeclaration() &&(static_cast <bool> (!GV->isDeclaration() &&
 "Only globals with definition can force usage.") ? void (0) :
 __assert_fail ("!GV->isDeclaration() && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2301, __extension__ __PRETTY_FUNCTION__
))
       "Only globals with definition can force usage.")(static_cast <bool> (!GV->isDeclaration() &&
 "Only globals with definition can force usage.") ? void (0) :
 __assert_fail ("!GV->isDeclaration() && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2301, __extension__ __PRETTY_FUNCTION__
));
LLVMCompilerUsed.emplace_back(GV);
2303}

2305void CodeGenModule::addUsedOrCompilerUsedGlobal(llvm::GlobalValue *GV) {
assert((isa<llvm::Function>(GV) || !GV->isDeclaration()) &&(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2307, __extension__ __PRETTY_FUNCTION__
))
       "Only globals with definition can force usage.")(static_cast <bool> ((isa<llvm::Function>(GV) || !
GV->isDeclaration()) && "Only globals with definition can force usage."
) ? void (0) : __assert_fail ("(isa<llvm::Function>(GV) || !GV->isDeclaration()) && \"Only globals with definition can force usage.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2307, __extension__ __PRETTY_FUNCTION__
));
if (getTriple().isOSBinFormatELF())
  LLVMCompilerUsed.emplace_back(GV);
else
  LLVMUsed.emplace_back(GV);
2312}

2314static void emitUsed(CodeGenModule &CGM, StringRef Name,
                   std::vector<llvm::WeakTrackingVH> &List) {
// Don't create llvm.used if there is no need.
if (List.empty())
  return;

// Convert List to what ConstantArray needs.
SmallVector<llvm::Constant*, 8> UsedArray;
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
  UsedArray[i] =
      llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
          cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
}

if (UsedArray.empty())
  return;
llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.Int8PtrTy, UsedArray.size());

auto *GV = new llvm::GlobalVariable(
    CGM.getModule(), ATy, false, llvm::GlobalValue::AppendingLinkage,
    llvm::ConstantArray::get(ATy, UsedArray), Name);

GV->setSection("llvm.metadata");
2338}

2340void CodeGenModule::emitLLVMUsed() {
emitUsed(*this, "llvm.used", LLVMUsed);
emitUsed(*this, "llvm.compiler.used", LLVMCompilerUsed);
2343}

2345void CodeGenModule::AppendLinkerOptions(StringRef Opts) {
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opts);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(getLLVMContext(), MDOpts));
2348}

2350void CodeGenModule::AddDetectMismatch(StringRef Name, StringRef Value) {
llvm::SmallString<32> Opt;
getTargetCodeGenInfo().getDetectMismatchOption(Name, Value, Opt);
if (Opt.empty())
  return;
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opt);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(getLLVMContext(), MDOpts));
2357}

2359void CodeGenModule::AddDependentLib(StringRef Lib) {
auto &C = getLLVMContext();
if (getTarget().getTriple().isOSBinFormatELF()) {
    ELFDependentLibraries.push_back(
      llvm::MDNode::get(C, llvm::MDString::get(C, Lib)));
  return;
}

llvm::SmallString<24> Opt;
getTargetCodeGenInfo().getDependentLibraryOption(Lib, Opt);
auto *MDOpts = llvm::MDString::get(getLLVMContext(), Opt);
LinkerOptionsMetadata.push_back(llvm::MDNode::get(C, MDOpts));
2371}

2373/// Add link options implied by the given module, including modules
2374/// it depends on, using a postorder walk.
2375static void addLinkOptionsPostorder(CodeGenModule &CGM, Module *Mod,
                                  SmallVectorImpl<llvm::MDNode *> &Metadata,
                                  llvm::SmallPtrSet<Module *, 16> &Visited) {
// Import this module's parent.
if (Mod->Parent && Visited.insert(Mod->Parent).second) {
  addLinkOptionsPostorder(CGM, Mod->Parent, Metadata, Visited);
}

// Import this module's dependencies.
for (Module *Import : llvm::reverse(Mod->Imports)) {
  if (Visited.insert(Import).second)
    addLinkOptionsPostorder(CGM, Import, Metadata, Visited);
}

// Add linker options to link against the libraries/frameworks
// described by this module.
llvm::LLVMContext &Context = CGM.getLLVMContext();
bool IsELF = CGM.getTarget().getTriple().isOSBinFormatELF();

// For modules that use export_as for linking, use that module
// name instead.
if (Mod->UseExportAsModuleLinkName)
  return;

for (const Module::LinkLibrary &LL : llvm::reverse(Mod->LinkLibraries)) {
  // Link against a framework.  Frameworks are currently Darwin only, so we
  // don't to ask TargetCodeGenInfo for the spelling of the linker option.
  if (LL.IsFramework) {
    llvm::Metadata *Args[2] = {llvm::MDString::get(Context, "-framework"),
                               llvm::MDString::get(Context, LL.Library)};

    Metadata.push_back(llvm::MDNode::get(Context, Args));
    continue;
  }

  // Link against a library.
  if (IsELF) {
    llvm::Metadata *Args[2] = {
        llvm::MDString::get(Context, "lib"),
        llvm::MDString::get(Context, LL.Library),
    };
    Metadata.push_back(llvm::MDNode::get(Context, Args));
  } else {
    llvm::SmallString<24> Opt;
    CGM.getTargetCodeGenInfo().getDependentLibraryOption(LL.Library, Opt);
    auto *OptString = llvm::MDString::get(Context, Opt);
    Metadata.push_back(llvm::MDNode::get(Context, OptString));
  }
}
2424}

2426void CodeGenModule::EmitModuleLinkOptions() {
// Collect the set of all of the modules we want to visit to emit link
// options, which is essentially the imported modules and all of their
// non-explicit child modules.
llvm::SetVector<clang::Module *> LinkModules;
llvm::SmallPtrSet<clang::Module *, 16> Visited;
SmallVector<clang::Module *, 16> Stack;

// Seed the stack with imported modules.
for (Module *M : ImportedModules) {
  // Do not add any link flags when an implementation TU of a module imports
  // a header of that same module.
  if (M->getTopLevelModuleName() == getLangOpts().CurrentModule &&
      !getLangOpts().isCompilingModule())
    continue;
  if (Visited.insert(M).second)
    Stack.push_back(M);
}

// Find all of the modules to import, making a little effort to prune
// non-leaf modules.
while (!Stack.empty()) {
  clang::Module *Mod = Stack.pop_back_val();

  bool AnyChildren = false;

  // Visit the submodules of this module.
  for (const auto &SM : Mod->submodules()) {
    // Skip explicit children; they need to be explicitly imported to be
    // linked against.
    if (SM->IsExplicit)
      continue;

    if (Visited.insert(SM).second) {
      Stack.push_back(SM);
      AnyChildren = true;
    }
  }

  // We didn't find any children, so add this module to the list of
  // modules to link against.
  if (!AnyChildren) {
    LinkModules.insert(Mod);
  }
}

// Add link options for all of the imported modules in reverse topological
// order.  We don't do anything to try to order import link flags with respect
// to linker options inserted by things like #pragma comment().
SmallVector<llvm::MDNode *, 16> MetadataArgs;
Visited.clear();
for (Module *M : LinkModules)
  if (Visited.insert(M).second)
    addLinkOptionsPostorder(*this, M, MetadataArgs, Visited);
std::reverse(MetadataArgs.begin(), MetadataArgs.end());
LinkerOptionsMetadata.append(MetadataArgs.begin(), MetadataArgs.end());

// Add the linker options metadata flag.
auto *NMD = getModule().getOrInsertNamedMetadata("llvm.linker.options");
for (auto *MD : LinkerOptionsMetadata)
  NMD->addOperand(MD);
2487}

2489void CodeGenModule::EmitDeferred() {
// Emit deferred declare target declarations.
if (getLangOpts().OpenMP && !getLangOpts().OpenMPSimd)
  getOpenMPRuntime().emitDeferredTargetDecls();

// Emit code for any potentially referenced deferred decls.  Since a
// previously unused static decl may become used during the generation of code
// for a static function, iterate until no changes are made.

if (!DeferredVTables.empty()) {
  EmitDeferredVTables();

  // Emitting a vtable doesn't directly cause more vtables to
  // become deferred, although it can cause functions to be
  // emitted that then need those vtables.
  assert(DeferredVTables.empty())(static_cast <bool> (DeferredVTables.empty()) ? void (0
) : __assert_fail ("DeferredVTables.empty()", "clang/lib/CodeGen/CodeGenModule.cpp"
, 2504, __extension__ __PRETTY_FUNCTION__));
}

// Emit CUDA/HIP static device variables referenced by host code only.
// Note we should not clear CUDADeviceVarODRUsedByHost since it is still
// needed for further handling.
if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice)
  llvm::append_range(DeferredDeclsToEmit,
                     getContext().CUDADeviceVarODRUsedByHost);

// Stop if we're out of both deferred vtables and deferred declarations.
if (DeferredDeclsToEmit.empty())
  return;

// Grab the list of decls to emit. If EmitGlobalDefinition schedules more
// work, it will not interfere with this.
std::vector<GlobalDecl> CurDeclsToEmit;
CurDeclsToEmit.swap(DeferredDeclsToEmit);

for (GlobalDecl &D : CurDeclsToEmit) {
  // We should call GetAddrOfGlobal with IsForDefinition set to true in order
  // to get GlobalValue with exactly the type we need, not something that
  // might had been created for another decl with the same mangled name but
  // different type.
  llvm::GlobalValue *GV = dyn_cast<llvm::GlobalValue>(
      GetAddrOfGlobal(D, ForDefinition));

  // In case of different address spaces, we may still get a cast, even with
  // IsForDefinition equal to true. Query mangled names table to get
  // GlobalValue.
  if (!GV)
    GV = GetGlobalValue(getMangledName(D));

  // Make sure GetGlobalValue returned non-null.
  assert(GV)(static_cast <bool> (GV) ? void (0) : __assert_fail ("GV"
, "clang/lib/CodeGen/CodeGenModule.cpp", 2538, __extension__ __PRETTY_FUNCTION__
));

  // Check to see if we've already emitted this.  This is necessary
  // for a couple of reasons: first, decls can end up in the
  // deferred-decls queue multiple times, and second, decls can end
  // up with definitions in unusual ways (e.g. by an extern inline
  // function acquiring a strong function redefinition).  Just
  // ignore these cases.
  if (!GV->isDeclaration())
    continue;

  // If this is OpenMP, check if it is legal to emit this global normally.
  if (LangOpts.OpenMP && OpenMPRuntime && OpenMPRuntime->emitTargetGlobal(D))
    continue;

  // Otherwise, emit the definition and move on to the next one.
  EmitGlobalDefinition(D, GV);

  // If we found out that we need to emit more decls, do that recursively.
  // This has the advantage that the decls are emitted in a DFS and related
  // ones are close together, which is convenient for testing.
  if (!DeferredVTables.empty() || !DeferredDeclsToEmit.empty()) {
    EmitDeferred();
    assert(DeferredVTables.empty() && DeferredDeclsToEmit.empty())(static_cast <bool> (DeferredVTables.empty() &&
 DeferredDeclsToEmit.empty()) ? void (0) : __assert_fail ("DeferredVTables.empty() && DeferredDeclsToEmit.empty()"
, "clang/lib/CodeGen/CodeGenModule.cpp", 2561, __extension__ __PRETTY_FUNCTION__
));
  }
}
2564}

2566void CodeGenModule::EmitVTablesOpportunistically() {
// Try to emit external vtables as available_externally if they have emitted
// all inlined virtual functions.  It runs after EmitDeferred() and therefore
// is not allowed to create new references to things that need to be emitted
// lazily. Note that it also uses fact that we eagerly emitting RTTI.

assert((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables())(static_cast <bool> ((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables
()) && "Only emit opportunistic vtables with optimizations"
) ? void (0) : __assert_fail ("(OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables()) && \"Only emit opportunistic vtables with optimizations\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2573, __extension__ __PRETTY_FUNCTION__
))
       && "Only emit opportunistic vtables with optimizations")(static_cast <bool> ((OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables
()) && "Only emit opportunistic vtables with optimizations"
) ? void (0) : __assert_fail ("(OpportunisticVTables.empty() || shouldOpportunisticallyEmitVTables()) && \"Only emit opportunistic vtables with optimizations\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2573, __extension__ __PRETTY_FUNCTION__
));

for (const CXXRecordDecl *RD : OpportunisticVTables) {
  assert(getVTables().isVTableExternal(RD) &&(static_cast <bool> (getVTables().isVTableExternal(RD) &&
 "This queue should only contain external vtables") ? void (0
) : __assert_fail ("getVTables().isVTableExternal(RD) && \"This queue should only contain external vtables\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2577, __extension__ __PRETTY_FUNCTION__
))
         "This queue should only contain external vtables")(static_cast <bool> (getVTables().isVTableExternal(RD) &&
 "This queue should only contain external vtables") ? void (0
) : __assert_fail ("getVTables().isVTableExternal(RD) && \"This queue should only contain external vtables\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2577, __extension__ __PRETTY_FUNCTION__
));
  if (getCXXABI().canSpeculativelyEmitVTable(RD))
    VTables.GenerateClassData(RD);
}
OpportunisticVTables.clear();
2582}

2584void CodeGenModule::EmitGlobalAnnotations() {
if (Annotations.empty())
  return;

// Create a new global variable for the ConstantStruct in the Module.
llvm::Constant *Array = llvm::ConstantArray::get(llvm::ArrayType::get(
  Annotations[0]->getType(), Annotations.size()), Annotations);
auto *gv = new llvm::GlobalVariable(getModule(), Array->getType(), false,
                                    llvm::GlobalValue::AppendingLinkage,
                                    Array, "llvm.global.annotations");
gv->setSection(AnnotationSection);
2595}

2597llvm::Constant *CodeGenModule::EmitAnnotationString(StringRef Str) {
llvm::Constant *&AStr = AnnotationStrings[Str];
if (AStr)
  return AStr;

// Not found yet, create a new global.
llvm::Constant *s = llvm::ConstantDataArray::getString(getLLVMContext(), Str);
auto *gv =
    new llvm::GlobalVariable(getModule(), s->getType(), true,
                             llvm::GlobalValue::PrivateLinkage, s, ".str");
gv->setSection(AnnotationSection);
gv->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
AStr = gv;
return gv;
2611}

2613llvm::Constant *CodeGenModule::EmitAnnotationUnit(SourceLocation Loc) {
SourceManager &SM = getContext().getSourceManager();
PresumedLoc PLoc = SM.getPresumedLoc(Loc);
if (PLoc.isValid())
  return EmitAnnotationString(PLoc.getFilename());
return EmitAnnotationString(SM.getBufferName(Loc));
2619}

2621llvm::Constant *CodeGenModule::EmitAnnotationLineNo(SourceLocation L) {
SourceManager &SM = getContext().getSourceManager();
PresumedLoc PLoc = SM.getPresumedLoc(L);
unsigned LineNo = PLoc.isValid() ? PLoc.getLine() :
  SM.getExpansionLineNumber(L);
return llvm::ConstantInt::get(Int32Ty, LineNo);
2627}

2629llvm::Constant *CodeGenModule::EmitAnnotationArgs(const AnnotateAttr *Attr) {
ArrayRef<Expr *> Exprs = {Attr->args_begin(), Attr->args_size()};
if (Exprs.empty())
  return llvm::ConstantPointerNull::get(GlobalsInt8PtrTy);

llvm::FoldingSetNodeID ID;
for (Expr *E : Exprs) {
  ID.Add(cast<clang::ConstantExpr>(E)->getAPValueResult());
}
llvm::Constant *&Lookup = AnnotationArgs[ID.ComputeHash()];
if (Lookup)
  return Lookup;

llvm::SmallVector<llvm::Constant *, 4> LLVMArgs;
LLVMArgs.reserve(Exprs.size());
ConstantEmitter ConstEmiter(*this);
llvm::transform(Exprs, std::back_inserter(LLVMArgs), [&](const Expr *E) {
  const auto *CE = cast<clang::ConstantExpr>(E);
  return ConstEmiter.emitAbstract(CE->getBeginLoc(), CE->getAPValueResult(),
                                  CE->getType());
});
auto *Struct = llvm::ConstantStruct::getAnon(LLVMArgs);
auto *GV = new llvm::GlobalVariable(getModule(), Struct->getType(), true,
                                    llvm::GlobalValue::PrivateLinkage, Struct,
                                    ".args");
GV->setSection(AnnotationSection);
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
auto *Bitcasted = llvm::ConstantExpr::getBitCast(GV, GlobalsInt8PtrTy);

Lookup = Bitcasted;
return Bitcasted;
2660}

2662llvm::Constant *CodeGenModule::EmitAnnotateAttr(llvm::GlobalValue *GV,
                                              const AnnotateAttr *AA,
                                              SourceLocation L) {
// Get the globals for file name, annotation, and the line number.
llvm::Constant *AnnoGV = EmitAnnotationString(AA->getAnnotation()),
               *UnitGV = EmitAnnotationUnit(L),
               *LineNoCst = EmitAnnotationLineNo(L),
               *Args = EmitAnnotationArgs(AA);

llvm::Constant *GVInGlobalsAS = GV;
if (GV->getAddressSpace() !=
    getDataLayout().getDefaultGlobalsAddressSpace()) {
  GVInGlobalsAS = llvm::ConstantExpr::getAddrSpaceCast(
      GV, GV->getValueType()->getPointerTo(
              getDataLayout().getDefaultGlobalsAddressSpace()));
}

// Create the ConstantStruct for the global annotation.
llvm::Constant *Fields[] = {
    llvm::ConstantExpr::getBitCast(GVInGlobalsAS, GlobalsInt8PtrTy),
    llvm::ConstantExpr::getBitCast(AnnoGV, GlobalsInt8PtrTy),
    llvm::ConstantExpr::getBitCast(UnitGV, GlobalsInt8PtrTy),
    LineNoCst,
    Args,
};
return llvm::ConstantStruct::getAnon(Fields);
2688}

2690void CodeGenModule::AddGlobalAnnotations(const ValueDecl *D,
                                       llvm::GlobalValue *GV) {
assert(D->hasAttr<AnnotateAttr>() && "no annotate attribute")(static_cast <bool> (D->hasAttr<AnnotateAttr>(
) && "no annotate attribute") ? void (0) : __assert_fail
 ("D->hasAttr<AnnotateAttr>() && \"no annotate attribute\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 2692, __extension__ __PRETTY_FUNCTION__
));
// Get the struct elements for these annotations.
for (const auto *I : D->specific_attrs<AnnotateAttr>())
  Annotations.push_back(EmitAnnotateAttr(GV, I, D->getLocation()));
2696}

2698bool CodeGenModule::isInNoSanitizeList(SanitizerMask Kind, llvm::Function *Fn,
                                     SourceLocation Loc) const {
const auto &NoSanitizeL = getContext().getNoSanitizeList();
// NoSanitize by function name.
if (NoSanitizeL.containsFunction(Kind, Fn->getName()))
  return true;
// NoSanitize by location.
if (Loc.isValid())
  return NoSanitizeL.containsLocation(Kind, Loc);
// If location is unknown, this may be a compiler-generated function. Assume
// it's located in the main file.
auto &SM = Context.getSourceManager();
if (const auto *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
  return NoSanitizeL.containsFile(Kind, MainFile->getName());
}
return false;
2714}

2716bool CodeGenModule::isInNoSanitizeList(llvm::GlobalVariable *GV,
                                     SourceLocation Loc, QualType Ty,
                                     StringRef Category) const {
// For now globals can be ignored only in ASan and KASan.
const SanitizerMask EnabledAsanMask =
    LangOpts.Sanitize.Mask &
    (SanitizerKind::Address | SanitizerKind::KernelAddress |
     SanitizerKind::HWAddress | SanitizerKind::KernelHWAddress |
     SanitizerKind::MemTag);
if (!EnabledAsanMask)
  return false;
const auto &NoSanitizeL = getContext().getNoSanitizeList();
if (NoSanitizeL.containsGlobal(EnabledAsanMask, GV->getName(), Category))
  return true;
if (NoSanitizeL.containsLocation(EnabledAsanMask, Loc, Category))
  return true;
// Check global type.
if (!Ty.isNull()) {
  // Drill down the array types: if global variable of a fixed type is
  // not sanitized, we also don't instrument arrays of them.
  while (auto AT = dyn_cast<ArrayType>(Ty.getTypePtr()))
    Ty = AT->getElementType();
  Ty = Ty.getCanonicalType().getUnqualifiedType();
  // Only record types (classes, structs etc.) are ignored.
  if (Ty->isRecordType()) {
    std::string TypeStr = Ty.getAsString(getContext().getPrintingPolicy());
    if (NoSanitizeL.containsType(EnabledAsanMask, TypeStr, Category))
      return true;
  }
}
return false;
2747}

2749bool CodeGenModule::imbueXRayAttrs(llvm::Function *Fn, SourceLocation Loc,
                                 StringRef Category) const {
const auto &XRayFilter = getContext().getXRayFilter();
using ImbueAttr = XRayFunctionFilter::ImbueAttribute;
auto Attr = ImbueAttr::NONE;
if (Loc.isValid())
  Attr = XRayFilter.shouldImbueLocation(Loc, Category);
if (Attr == ImbueAttr::NONE)
  Attr = XRayFilter.shouldImbueFunction(Fn->getName());
switch (Attr) {
case ImbueAttr::NONE:
  return false;
case ImbueAttr::ALWAYS:
  Fn->addFnAttr("function-instrument", "xray-always");
  break;
case ImbueAttr::ALWAYS_ARG1:
  Fn->addFnAttr("function-instrument", "xray-always");
  Fn->addFnAttr("xray-log-args", "1");
  break;
case ImbueAttr::NEVER:
  Fn->addFnAttr("function-instrument", "xray-never");
  break;
}
return true;
2773}

2775bool CodeGenModule::isProfileInstrExcluded(llvm::Function *Fn,
                                         SourceLocation Loc) const {
const auto &ProfileList = getContext().getProfileList();
// If the profile list is empty, then instrument everything.
if (ProfileList.isEmpty())
  return false;
CodeGenOptions::ProfileInstrKind Kind = getCodeGenOpts().getProfileInstr();
// First, check the function name.
Optional<bool> V = ProfileList.isFunctionExcluded(Fn->getName(), Kind);
if (V.hasValue())
  return *V;
// Next, check the source location.
if (Loc.isValid()) {
  Optional<bool> V = ProfileList.isLocationExcluded(Loc, Kind);
  if (V.hasValue())
    return *V;
}
// If location is unknown, this may be a compiler-generated function. Assume
// it's located in the main file.
auto &SM = Context.getSourceManager();
if (const auto *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
  Optional<bool> V = ProfileList.isFileExcluded(MainFile->getName(), Kind);
  if (V.hasValue())
    return *V;
}
return ProfileList.getDefault();
2801}

2803bool CodeGenModule::MustBeEmitted(const ValueDecl *Global) {
// Never defer when EmitAllDecls is specified.
if (LangOpts.EmitAllDecls)
  return true;

if (CodeGenOpts.KeepStaticConsts) {
  const auto *VD = dyn_cast<VarDecl>(Global);
  if (VD && VD->getType().isConstQualified() &&
      VD->getStorageDuration() == SD_Static)
    return true;
}

return getContext().DeclMustBeEmitted(Global);
2816}

2818bool CodeGenModule::MayBeEmittedEagerly(const ValueDecl *Global) {
// In OpenMP 5.0 variables and function may be marked as
// device_type(host/nohost) and we should not emit them eagerly unless we sure
// that they must be emitted on the host/device. To be sure we need to have
// seen a declare target with an explicit mentioning of the function, we know
// we have if the level of the declare target attribute is -1. Note that we
// check somewhere else if we should emit this at all.
if (LangOpts.OpenMP >= 50 && !LangOpts.OpenMPSimd) {
  llvm::Optional<OMPDeclareTargetDeclAttr *> ActiveAttr =
      OMPDeclareTargetDeclAttr::getActiveAttr(Global);
  if (!ActiveAttr || (*ActiveAttr)->getLevel() != (unsigned)-1)
    return false;
}

if (const auto *FD = dyn_cast<FunctionDecl>(Global)) {
  if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation)
    // Implicit template instantiations may change linkage if they are later
    // explicitly instantiated, so they should not be emitted eagerly.
    return false;
}
if (const auto *VD = dyn_cast<VarDecl>(Global))
  if (Context.getInlineVariableDefinitionKind(VD) ==
      ASTContext::InlineVariableDefinitionKind::WeakUnknown)
    // A definition of an inline constexpr static data member may change
    // linkage later if it's redeclared outside the class.
    return false;
// If OpenMP is enabled and threadprivates must be generated like TLS, delay
// codegen for global variables, because they may be marked as threadprivate.
if (LangOpts.OpenMP && LangOpts.OpenMPUseTLS &&
    getContext().getTargetInfo().isTLSSupported() && isa<VarDecl>(Global) &&
    !isTypeConstant(Global->getType(), false) &&
    !OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(Global))
  return false;

return true;
2853}

2855ConstantAddress CodeGenModule::GetAddrOfMSGuidDecl(const MSGuidDecl *GD) {
StringRef Name = getMangledName(GD);

// The UUID descriptor should be pointer aligned.
CharUnits Alignment = CharUnits::fromQuantity(PointerAlignInBytes);

// Look for an existing global.
if (llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name))
  return ConstantAddress(GV, GV->getValueType(), Alignment);

ConstantEmitter Emitter(*this);
llvm::Constant *Init;

APValue &V = GD->getAsAPValue();
if (!V.isAbsent()) {
  // If possible, emit the APValue version of the initializer. In particular,
  // this gets the type of the constant right.
  Init = Emitter.emitForInitializer(
      GD->getAsAPValue(), GD->getType().getAddressSpace(), GD->getType());
} else {
  // As a fallback, directly construct the constant.
  // FIXME: This may get padding wrong under esoteric struct layout rules.
  // MSVC appears to create a complete type 'struct __s_GUID' that it
  // presumably uses to represent these constants.
  MSGuidDecl::Parts Parts = GD->getParts();
  llvm::Constant *Fields[4] = {
      llvm::ConstantInt::get(Int32Ty, Parts.Part1),
      llvm::ConstantInt::get(Int16Ty, Parts.Part2),
      llvm::ConstantInt::get(Int16Ty, Parts.Part3),
      llvm::ConstantDataArray::getRaw(
          StringRef(reinterpret_cast<char *>(Parts.Part4And5), 8), 8,
          Int8Ty)};
  Init = llvm::ConstantStruct::getAnon(Fields);
}

auto *GV = new llvm::GlobalVariable(
    getModule(), Init->getType(),
    /*isConstant=*/true, llvm::GlobalValue::LinkOnceODRLinkage, Init, Name);
if (supportsCOMDAT())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
setDSOLocal(GV);

if (!V.isAbsent()) {
  Emitter.finalize(GV);
  return ConstantAddress(GV, GV->getValueType(), Alignment);
}

llvm::Type *Ty = getTypes().ConvertTypeForMem(GD->getType());
llvm::Constant *Addr = llvm::ConstantExpr::getBitCast(
    GV, Ty->getPointerTo(GV->getAddressSpace()));
return ConstantAddress(Addr, Ty, Alignment);
2906}

2908ConstantAddress CodeGenModule::GetAddrOfTemplateParamObject(
  const TemplateParamObjectDecl *TPO) {
StringRef Name = getMangledName(TPO);
CharUnits Alignment = getNaturalTypeAlignment(TPO->getType());

if (llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name))
  return ConstantAddress(GV, GV->getValueType(), Alignment);

ConstantEmitter Emitter(*this);
llvm::Constant *Init = Emitter.emitForInitializer(
      TPO->getValue(), TPO->getType().getAddressSpace(), TPO->getType());

if (!Init) {
  ErrorUnsupported(TPO, "template parameter object");
  return ConstantAddress::invalid();
}

auto *GV = new llvm::GlobalVariable(
    getModule(), Init->getType(),
    /*isConstant=*/true, llvm::GlobalValue::LinkOnceODRLinkage, Init, Name);
if (supportsCOMDAT())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
Emitter.finalize(GV);

return ConstantAddress(GV, GV->getValueType(), Alignment);
2933}

2935ConstantAddress CodeGenModule::GetWeakRefReference(const ValueDecl *VD) {
const AliasAttr *AA = VD->getAttr<AliasAttr>();
assert(AA && "No alias?")(static_cast <bool> (AA && "No alias?") ? void (
0) : __assert_fail ("AA && \"No alias?\"", "clang/lib/CodeGen/CodeGenModule.cpp"
, 2937, __extension__ __PRETTY_FUNCTION__));

CharUnits Alignment = getContext().getDeclAlign(VD);
llvm::Type *DeclTy = getTypes().ConvertTypeForMem(VD->getType());

// See if there is already something with the target's name in the module.
llvm::GlobalValue *Entry = GetGlobalValue(AA->getAliasee());
if (Entry) {
  unsigned AS = getContext().getTargetAddressSpace(VD->getType());
  auto Ptr = llvm::ConstantExpr::getBitCast(Entry, DeclTy->getPointerTo(AS));
  return ConstantAddress(Ptr, DeclTy, Alignment);
}

llvm::Constant *Aliasee;
if (isa<llvm::FunctionType>(DeclTy))
  Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy,
                                    GlobalDecl(cast<FunctionDecl>(VD)),
                                    /*ForVTable=*/false);
else
  Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), DeclTy, LangAS::Default,
                                  nullptr);

auto *F = cast<llvm::GlobalValue>(Aliasee);
F->setLinkage(llvm::Function::ExternalWeakLinkage);
WeakRefReferences.insert(F);

return ConstantAddress(Aliasee, DeclTy, Alignment);
2964}

2966void CodeGenModule::EmitGlobal(GlobalDecl GD) {
const auto *Global = cast<ValueDecl>(GD.getDecl());

// Weak references don't produce any output by themselves.
if (Global->hasAttr<WeakRefAttr>())
  return;

// If this is an alias definition (which otherwise looks like a declaration)
// emit it now.
if (Global->hasAttr<AliasAttr>())
  return EmitAliasDefinition(GD);

// IFunc like an alias whose value is resolved at runtime by calling resolver.
if (Global->hasAttr<IFuncAttr>())
  return emitIFuncDefinition(GD);

// If this is a cpu_dispatch multiversion function, emit the resolver.
if (Global->hasAttr<CPUDispatchAttr>())
  return emitCPUDispatchDefinition(GD);

// If this is CUDA, be selective about which declarations we emit.
if (LangOpts.CUDA) {
  if (LangOpts.CUDAIsDevice) {
    if (!Global->hasAttr<CUDADeviceAttr>() &&
        !Global->hasAttr<CUDAGlobalAttr>() &&
        !Global->hasAttr<CUDAConstantAttr>() &&
        !Global->hasAttr<CUDASharedAttr>() &&
        !Global->getType()->isCUDADeviceBuiltinSurfaceType() &&
        !Global->getType()->isCUDADeviceBuiltinTextureType())
      return;
  } else {
    // We need to emit host-side 'shadows' for all global
    // device-side variables because the CUDA runtime needs their
    // size and host-side address in order to provide access to
    // their device-side incarnations.

    // So device-only functions are the only things we skip.
    if (isa<FunctionDecl>(Global) && !Global->hasAttr<CUDAHostAttr>() &&
        Global->hasAttr<CUDADeviceAttr>())
      return;

    assert((isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) &&(static_cast <bool> ((isa<FunctionDecl>(Global) ||
 isa<VarDecl>(Global)) && "Expected Variable or Function"
) ? void (0) : __assert_fail ("(isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) && \"Expected Variable or Function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3008, __extension__ __PRETTY_FUNCTION__
))
           "Expected Variable or Function")(static_cast <bool> ((isa<FunctionDecl>(Global) ||
 isa<VarDecl>(Global)) && "Expected Variable or Function"
) ? void (0) : __assert_fail ("(isa<FunctionDecl>(Global) || isa<VarDecl>(Global)) && \"Expected Variable or Function\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3008, __extension__ __PRETTY_FUNCTION__
));
  }
}

if (LangOpts.OpenMP) {
  // If this is OpenMP, check if it is legal to emit this global normally.
  if (OpenMPRuntime && OpenMPRuntime->emitTargetGlobal(GD))
    return;
  if (auto *DRD = dyn_cast<OMPDeclareReductionDecl>(Global)) {
    if (MustBeEmitted(Global))
      EmitOMPDeclareReduction(DRD);
    return;
  } else if (auto *DMD = dyn_cast<OMPDeclareMapperDecl>(Global)) {
    if (MustBeEmitted(Global))
      EmitOMPDeclareMapper(DMD);
    return;
  }
}

// Ignore declarations, they will be emitted on their first use.
if (const auto *FD = dyn_cast<FunctionDecl>(Global)) {
  // Forward declarations are emitted lazily on first use.
  if (!FD->doesThisDeclarationHaveABody()) {
    if (!FD->doesDeclarationForceExternallyVisibleDefinition())
      return;

    StringRef MangledName = getMangledName(GD);

    // Compute the function info and LLVM type.
    const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
    llvm::Type *Ty = getTypes().GetFunctionType(FI);

    GetOrCreateLLVMFunction(MangledName, Ty, GD, /*ForVTable=*/false,
                            /*DontDefer=*/false);
    return;
  }
} else {
  const auto *VD = cast<VarDecl>(Global);
  assert(VD->isFileVarDecl() && "Cannot emit local var decl as global.")(static_cast <bool> (VD->isFileVarDecl() && "Cannot emit local var decl as global."
) ? void (0) : __assert_fail ("VD->isFileVarDecl() && \"Cannot emit local var decl as global.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3046, __extension__ __PRETTY_FUNCTION__
));
  if (VD->isThisDeclarationADefinition() != VarDecl::Definition &&
      !Context.isMSStaticDataMemberInlineDefinition(VD)) {
    if (LangOpts.OpenMP) {
      // Emit declaration of the must-be-emitted declare target variable.
      if (llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res =
              OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD)) {
        bool UnifiedMemoryEnabled =
            getOpenMPRuntime().hasRequiresUnifiedSharedMemory();
        if (*Res == OMPDeclareTargetDeclAttr::MT_To &&
            !UnifiedMemoryEnabled) {
          (void)GetAddrOfGlobalVar(VD);
        } else {
          assert(((*Res == OMPDeclareTargetDeclAttr::MT_Link) ||(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3062, __extension__ __PRETTY_FUNCTION__
))
                  (*Res == OMPDeclareTargetDeclAttr::MT_To &&(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3062, __extension__ __PRETTY_FUNCTION__
))
                   UnifiedMemoryEnabled)) &&(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3062, __extension__ __PRETTY_FUNCTION__
))
                 "Link clause or to clause with unified memory expected.")(static_cast <bool> (((*Res == OMPDeclareTargetDeclAttr
::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To &&
 UnifiedMemoryEnabled)) && "Link clause or to clause with unified memory expected."
) ? void (0) : __assert_fail ("((*Res == OMPDeclareTargetDeclAttr::MT_Link) || (*Res == OMPDeclareTargetDeclAttr::MT_To && UnifiedMemoryEnabled)) && \"Link clause or to clause with unified memory expected.\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3062, __extension__ __PRETTY_FUNCTION__
));
          (void)getOpenMPRuntime().getAddrOfDeclareTargetVar(VD);
        }

        return;
      }
    }
    // If this declaration may have caused an inline variable definition to
    // change linkage, make sure that it's emitted.
    if (Context.getInlineVariableDefinitionKind(VD) ==
        ASTContext::InlineVariableDefinitionKind::Strong)
      GetAddrOfGlobalVar(VD);
    return;
  }
}

// Defer code generation to first use when possible, e.g. if this is an inline
// function. If the global must always be emitted, do it eagerly if possible
// to benefit from cache locality.
if (MustBeEmitted(Global) && MayBeEmittedEagerly(Global)) {
  // Emit the definition if it can't be deferred.
  EmitGlobalDefinition(GD);
  return;
}

// If we're deferring emission of a C++ variable with an
// initializer, remember the order in which it appeared in the file.
if (getLangOpts().CPlusPlus && isa<VarDecl>(Global) &&
    cast<VarDecl>(Global)->hasInit()) {
  DelayedCXXInitPosition[Global] = CXXGlobalInits.size();
  CXXGlobalInits.push_back(nullptr);
}

StringRef MangledName = getMangledName(GD);
if (GetGlobalValue(MangledName) != nullptr) {
  // The value has already been used and should therefore be emitted.
  addDeferredDeclToEmit(GD);
} else if (MustBeEmitted(Global)) {
  // The value must be emitted, but cannot be emitted eagerly.
  assert(!MayBeEmittedEagerly(Global))(static_cast <bool> (!MayBeEmittedEagerly(Global)) ? void
 (0) : __assert_fail ("!MayBeEmittedEagerly(Global)", "clang/lib/CodeGen/CodeGenModule.cpp"
, 3101, __extension__ __PRETTY_FUNCTION__));
  addDeferredDeclToEmit(GD);
} else {
  // Otherwise, remember that we saw a deferred decl with this name.  The
  // first use of the mangled name will cause it to move into
  // DeferredDeclsToEmit.
  DeferredDecls[MangledName] = GD;
}
3109}

3111// Check if T is a class type with a destructor that's not dllimport.
3112static bool HasNonDllImportDtor(QualType T) {
if (const auto *RT = T->getBaseElementTypeUnsafe()->getAs<RecordType>())
  if (CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl()))
    if (RD->getDestructor() && !RD->getDestructor()->hasAttr<DLLImportAttr>())
      return true;

return false;
3119}

3121namespace {
struct FunctionIsDirectlyRecursive
    : public ConstStmtVisitor<FunctionIsDirectlyRecursive, bool> {
  const StringRef Name;
  const Builtin::Context &BI;
  FunctionIsDirectlyRecursive(StringRef N, const Builtin::Context &C)
      : Name(N), BI(C) {}

  bool VisitCallExpr(const CallExpr *E) {
    const FunctionDecl *FD = E->getDirectCallee();
    if (!FD)
      return false;
    AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>();
    if (Attr && Name == Attr->getLabel())
      return true;
    unsigned BuiltinID = FD->getBuiltinID();
    if (!BuiltinID || !BI.isLibFunction(BuiltinID))
      return false;
    StringRef BuiltinName = BI.getName(BuiltinID);
    if (BuiltinName.startswith("__builtin_") &&
        Name == BuiltinName.slice(strlen("__builtin_"), StringRef::npos)) {
      return true;
    }
    return false;
  }

  bool VisitStmt(const Stmt *S) {
    for (const Stmt *Child : S->children())
      if (Child && this->Visit(Child))
        return true;
    return false;
  }
};

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

  bool shouldVisitImplicitCode() const { return true; }

  bool VisitVarDecl(VarDecl *VD) {
    if (VD->getTLSKind()) {
      // A thread-local variable cannot be imported.
      SafeToInline = false;
      return SafeToInline;
    }

    // A variable definition might imply a destructor call.
    if (VD->isThisDeclarationADefinition())
      SafeToInline = !HasNonDllImportDtor(VD->getType());

    return SafeToInline;
  }

  bool VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
    if (const auto *D = E->getTemporary()->getDestructor())
      SafeToInline = D->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitDeclRefExpr(DeclRefExpr *E) {
    ValueDecl *VD = E->getDecl();
    if (isa<FunctionDecl>(VD))
      SafeToInline = VD->hasAttr<DLLImportAttr>();
    else if (VarDecl *V = dyn_cast<VarDecl>(VD))
      SafeToInline = !V->hasGlobalStorage() || V->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXConstructExpr(CXXConstructExpr *E) {
    SafeToInline = E->getConstructor()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
    CXXMethodDecl *M = E->getMethodDecl();
    if (!M) {
      // Call through a pointer to member function. This is safe to inline.
      SafeToInline = true;
    } else {
      SafeToInline = M->hasAttr<DLLImportAttr>();
    }
    return SafeToInline;
  }

  bool VisitCXXDeleteExpr(CXXDeleteExpr *E) {
    SafeToInline = E->getOperatorDelete()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }

  bool VisitCXXNewExpr(CXXNewExpr *E) {
    SafeToInline = E->getOperatorNew()->hasAttr<DLLImportAttr>();
    return SafeToInline;
  }
};
3217}

3219// isTriviallyRecursive - Check if this function calls another
3220// decl that, because of the asm attribute or the other decl being a builtin,
3221// ends up pointing to itself.
3222bool
3223CodeGenModule::isTriviallyRecursive(const FunctionDecl *FD) {
StringRef Name;
if (getCXXABI().getMangleContext().shouldMangleDeclName(FD)) {
  // asm labels are a special kind of mangling we have to support.
  AsmLabelAttr *Attr = FD->getAttr<AsmLabelAttr>();
  if (!Attr)
    return false;
  Name = Attr->getLabel();
} else {
  Name = FD->getName();
}

FunctionIsDirectlyRecursive Walker(Name, Context.BuiltinInfo);
const Stmt *Body = FD->getBody();
return Body ? Walker.Visit(Body) : false;
3238}

3240bool CodeGenModule::shouldEmitFunction(GlobalDecl GD) {
if (getFunctionLinkage(GD) != llvm::Function::AvailableExternallyLinkage)
  return true;
const auto *F = cast<FunctionDecl>(GD.getDecl());
if (CodeGenOpts.OptimizationLevel == 0 && !F->hasAttr<AlwaysInlineAttr>())
  return false;

if (F->hasAttr<DLLImportAttr>() && !F->hasAttr<AlwaysInlineAttr>()) {
  // Check whether it would be safe to inline this dllimport function.
  DLLImportFunctionVisitor Visitor;
  Visitor.TraverseFunctionDecl(const_cast<FunctionDecl*>(F));
  if (!Visitor.SafeToInline)
    return false;

  if (const CXXDestructorDecl *Dtor = dyn_cast<CXXDestructorDecl>(F)) {
    // Implicit destructor invocations aren't captured in the AST, so the
    // check above can't see them. Check for them manually here.
    for (const Decl *Member : Dtor->getParent()->decls())
      if (isa<FieldDecl>(Member))
        if (HasNonDllImportDtor(cast<FieldDecl>(Member)->getType()))
          return false;
    for (const CXXBaseSpecifier &B : Dtor->getParent()->bases())
      if (HasNonDllImportDtor(B.getType()))
        return false;
  }
}

// Inline builtins declaration must be emitted. They often are fortified
// functions.
if (F->isInlineBuiltinDeclaration())
  return true;

// PR9614. Avoid cases where the source code is lying to us. An available
// externally function should have an equivalent function somewhere else,
// but a function that calls itself through asm label/`__builtin_` trickery is
// clearly not equivalent to the real implementation.
// This happens in glibc's btowc and in some configure checks.
return !isTriviallyRecursive(F);
3278}

3280bool CodeGenModule::shouldOpportunisticallyEmitVTables() {
return CodeGenOpts.OptimizationLevel > 0;
3282}

3284void CodeGenModule::EmitMultiVersionFunctionDefinition(GlobalDecl GD,
                                                     llvm::GlobalValue *GV) {
const auto *FD = cast<FunctionDecl>(GD.getDecl());

if (FD->isCPUSpecificMultiVersion()) {
  auto *Spec = FD->getAttr<CPUSpecificAttr>();
  for (unsigned I = 0; I < Spec->cpus_size(); ++I)
    EmitGlobalFunctionDefinition(GD.getWithMultiVersionIndex(I), nullptr);
  // Requires multiple emits.
} else if (FD->isTargetClonesMultiVersion()) {
  auto *Clone = FD->getAttr<TargetClonesAttr>();
  for (unsigned I = 0; I < Clone->featuresStrs_size(); ++I)
    if (Clone->isFirstOfVersion(I))
      EmitGlobalFunctionDefinition(GD.getWithMultiVersionIndex(I), nullptr);
  EmitTargetClonesResolver(GD);
} else
  EmitGlobalFunctionDefinition(GD, GV);
3301}

3303void CodeGenModule::EmitGlobalDefinition(GlobalDecl GD, llvm::GlobalValue *GV) {
const auto *D = cast<ValueDecl>(GD.getDecl());

PrettyStackTraceDecl CrashInfo(const_cast<ValueDecl *>(D), D->getLocation(),
                               Context.getSourceManager(),
                               "Generating code for declaration");

if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
  // At -O0, don't generate IR for functions with available_externally
  // linkage.
  if (!shouldEmitFunction(GD))
    return;

  llvm::TimeTraceScope TimeScope("CodeGen Function", [&]() {
    std::string Name;
    llvm::raw_string_ostream OS(Name);
    FD->getNameForDiagnostic(OS, getContext().getPrintingPolicy(),
                             /*Qualified=*/true);
    return Name;
  });

  if (const auto *Method = dyn_cast<CXXMethodDecl>(D)) {
    // Make sure to emit the definition(s) before we emit the thunks.
    // This is necessary for the generation of certain thunks.
    if (isa<CXXConstructorDecl>(Method) || isa<CXXDestructorDecl>(Method))
      ABI->emitCXXStructor(GD);
    else if (FD->isMultiVersion())
      EmitMultiVersionFunctionDefinition(GD, GV);
    else
      EmitGlobalFunctionDefinition(GD, GV);

    if (Method->isVirtual())
      getVTables().EmitThunks(GD);

    return;
  }

  if (FD->isMultiVersion())
    return EmitMultiVersionFunctionDefinition(GD, GV);
  return EmitGlobalFunctionDefinition(GD, GV);
}

if (const auto *VD = dyn_cast<VarDecl>(D))
  return EmitGlobalVarDefinition(VD, !VD->hasDefinition());

llvm_unreachable("Invalid argument to EmitGlobalDefinition()")::llvm::llvm_unreachable_internal("Invalid argument to EmitGlobalDefinition()"
, "clang/lib/CodeGen/CodeGenModule.cpp", 3348);
3349}

3351static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                    llvm::Function *NewFn);

3354static unsigned
3355TargetMVPriority(const TargetInfo &TI,
               const CodeGenFunction::MultiVersionResolverOption &RO) {
unsigned Priority = 0;
for (StringRef Feat : RO.Conditions.Features)
  Priority = std::max(Priority, TI.multiVersionSortPriority(Feat));

if (!RO.Conditions.Architecture.empty())
  Priority = std::max(
      Priority, TI.multiVersionSortPriority(RO.Conditions.Architecture));
return Priority;
3365}

3367// Multiversion functions should be at most 'WeakODRLinkage' so that a different
3368// TU can forward declare the function without causing problems.  Particularly
3369// in the cases of CPUDispatch, this causes issues. This also makes sure we
3370// work with internal linkage functions, so that the same function name can be
3371// used with internal linkage in multiple TUs.
3372llvm::GlobalValue::LinkageTypes getMultiversionLinkage(CodeGenModule &CGM,
                                                     GlobalDecl GD) {
const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
if (FD->getFormalLinkage() == InternalLinkage)
  return llvm::GlobalValue::InternalLinkage;
return llvm::GlobalValue::WeakODRLinkage;
3378}

3380void CodeGenModule::EmitTargetClonesResolver(GlobalDecl GD) {
const auto *FD = cast<FunctionDecl>(GD.getDecl());
assert(FD && "Not a FunctionDecl?")(static_cast <bool> (FD && "Not a FunctionDecl?"
) ? void (0) : __assert_fail ("FD && \"Not a FunctionDecl?\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3382, __extension__ __PRETTY_FUNCTION__
));
const auto *TC = FD->getAttr<TargetClonesAttr>();
assert(TC && "Not a target_clones Function?")(static_cast <bool> (TC && "Not a target_clones Function?"
) ? void (0) : __assert_fail ("TC && \"Not a target_clones Function?\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3384, __extension__ __PRETTY_FUNCTION__
));

QualType CanonTy = Context.getCanonicalType(FD->getType());
llvm::Type *DeclTy = getTypes().ConvertType(CanonTy);

if (const auto *CXXFD = dyn_cast<CXXMethodDecl>(FD)) {
  const CGFunctionInfo &FInfo = getTypes().arrangeCXXMethodDeclaration(CXXFD);
  DeclTy = getTypes().GetFunctionType(FInfo);
}

llvm::Function *ResolverFunc;
if (getTarget().supportsIFunc()) {
  auto *IFunc = cast<llvm::GlobalIFunc>(
      GetOrCreateMultiVersionResolver(GD, DeclTy, FD));
  ResolverFunc = cast<llvm::Function>(IFunc->getResolver());
} else
  ResolverFunc =
      cast<llvm::Function>(GetOrCreateMultiVersionResolver(GD, DeclTy, FD));

SmallVector<CodeGenFunction::MultiVersionResolverOption, 10> Options;
for (unsigned VersionIndex = 0; VersionIndex < TC->featuresStrs_size();
     ++VersionIndex) {
  if (!TC->isFirstOfVersion(VersionIndex))
    continue;
  StringRef Version = TC->getFeatureStr(VersionIndex);
  StringRef MangledName =
      getMangledName(GD.getWithMultiVersionIndex(VersionIndex));
  llvm::Constant *Func = GetGlobalValue(MangledName);
  assert(Func &&(static_cast <bool> (Func && "Should have already been created before calling resolver emit"
) ? void (0) : __assert_fail ("Func && \"Should have already been created before calling resolver emit\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3413, __extension__ __PRETTY_FUNCTION__
))
         "Should have already been created before calling resolver emit")(static_cast <bool> (Func && "Should have already been created before calling resolver emit"
) ? void (0) : __assert_fail ("Func && \"Should have already been created before calling resolver emit\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3413, __extension__ __PRETTY_FUNCTION__
));

  StringRef Architecture;
  llvm::SmallVector<StringRef, 1> Feature;

  if (Version.startswith("arch="))
    Architecture = Version.drop_front(sizeof("arch=") - 1);
  else if (Version != "default")
    Feature.push_back(Version);

  Options.emplace_back(cast<llvm::Function>(Func), Architecture, Feature);
}

const TargetInfo &TI = getTarget();
std::stable_sort(
    Options.begin(), Options.end(),
    [&TI](const CodeGenFunction::MultiVersionResolverOption &LHS,
          const CodeGenFunction::MultiVersionResolverOption &RHS) {
      return TargetMVPriority(TI, LHS) > TargetMVPriority(TI, RHS);
    });
CodeGenFunction CGF(*this);
CGF.EmitMultiVersionResolver(ResolverFunc, Options);
3435}

3437void CodeGenModule::emitMultiVersionFunctions() {
std::vector<GlobalDecl> MVFuncsToEmit;
MultiVersionFuncs.swap(MVFuncsToEmit);
for (GlobalDecl GD : MVFuncsToEmit) {
  SmallVector<CodeGenFunction::MultiVersionResolverOption, 10> Options;
  const FunctionDecl *FD = cast<FunctionDecl>(GD.getDecl());
  getContext().forEachMultiversionedFunctionVersion(
      FD, [this, &GD, &Options](const FunctionDecl *CurFD) {
        GlobalDecl CurGD{
            (CurFD->isDefined() ? CurFD->getDefinition() : CurFD)};
        StringRef MangledName = getMangledName(CurGD);
        llvm::Constant *Func = GetGlobalValue(MangledName);
        if (!Func) {
          if (CurFD->isDefined()) {
            EmitGlobalFunctionDefinition(CurGD, nullptr);
            Func = GetGlobalValue(MangledName);
          } else {
            const CGFunctionInfo &FI =
                getTypes().arrangeGlobalDeclaration(GD);
            llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);
            Func = GetAddrOfFunction(CurGD, Ty, /*ForVTable=*/false,
                                     /*DontDefer=*/false, ForDefinition);
          }
          assert(Func && "This should have just been created")(static_cast <bool> (Func && "This should have just been created"
) ? void (0) : __assert_fail ("Func && \"This should have just been created\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3460, __extension__ __PRETTY_FUNCTION__
));
        }

        const auto *TA = CurFD->getAttr<TargetAttr>();
        llvm::SmallVector<StringRef, 8> Feats;
        TA->getAddedFeatures(Feats);

        Options.emplace_back(cast<llvm::Function>(Func),
                             TA->getArchitecture(), Feats);
      });

  llvm::Function *ResolverFunc;
  const TargetInfo &TI = getTarget();

  if (TI.supportsIFunc() || FD->isTargetMultiVersion()) {
    ResolverFunc = cast<llvm::Function>(
        GetGlobalValue((getMangledName(GD) + ".resolver").str()));
    ResolverFunc->setLinkage(getMultiversionLinkage(*this, GD));
  } else {
    ResolverFunc = cast<llvm::Function>(GetGlobalValue(getMangledName(GD)));
  }

  if (supportsCOMDAT())
    ResolverFunc->setComdat(
        getModule().getOrInsertComdat(ResolverFunc->getName()));

  llvm::stable_sort(
      Options, [&TI](const CodeGenFunction::MultiVersionResolverOption &LHS,
                     const CodeGenFunction::MultiVersionResolverOption &RHS) {
        return TargetMVPriority(TI, LHS) > TargetMVPriority(TI, RHS);
      });
  CodeGenFunction CGF(*this);
  CGF.EmitMultiVersionResolver(ResolverFunc, Options);
}

// Ensure that any additions to the deferred decls list caused by emitting a
// variant are emitted.  This can happen when the variant itself is inline and
// calls a function without linkage.
if (!MVFuncsToEmit.empty())
  EmitDeferred();

// Ensure that any additions to the multiversion funcs list from either the
// deferred decls or the multiversion functions themselves are emitted.
if (!MultiVersionFuncs.empty())
  emitMultiVersionFunctions();
3505}

3507void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl GD) {
const auto *FD = cast<FunctionDecl>(GD.getDecl());
assert(FD && "Not a FunctionDecl?")(static_cast <bool> (FD && "Not a FunctionDecl?"
) ? void (0) : __assert_fail ("FD && \"Not a FunctionDecl?\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3509, __extension__ __PRETTY_FUNCTION__
));
assert(FD->isCPUDispatchMultiVersion() && "Not a multiversion function?")(static_cast <bool> (FD->isCPUDispatchMultiVersion()
 && "Not a multiversion function?") ? void (0) : __assert_fail
 ("FD->isCPUDispatchMultiVersion() && \"Not a multiversion function?\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3510, __extension__ __PRETTY_FUNCTION__
));
const auto *DD = FD->getAttr<CPUDispatchAttr>();
assert(DD && "Not a cpu_dispatch Function?")(static_cast <bool> (DD && "Not a cpu_dispatch Function?"
) ? void (0) : __assert_fail ("DD && \"Not a cpu_dispatch Function?\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3512, __extension__ __PRETTY_FUNCTION__
));
llvm::Type *DeclTy = getTypes().ConvertType(FD->getType());

if (const auto *CXXFD = dyn_cast<CXXMethodDecl>(FD)) {
  const CGFunctionInfo &FInfo = getTypes().arrangeCXXMethodDeclaration(CXXFD);
  DeclTy = getTypes().GetFunctionType(FInfo);
}

StringRef ResolverName = getMangledName(GD);
UpdateMultiVersionNames(GD, FD, ResolverName);

llvm::Type *ResolverType;
GlobalDecl ResolverGD;
if (getTarget().supportsIFunc()) {
  ResolverType = llvm::FunctionType::get(
      llvm::PointerType::get(DeclTy,
                             Context.getTargetAddressSpace(FD->getType())),
      false);
}
else {
  ResolverType = DeclTy;
  ResolverGD = GD;
}

auto *ResolverFunc = cast<llvm::Function>(GetOrCreateLLVMFunction(
    ResolverName, ResolverType, ResolverGD, /*ForVTable=*/false));
ResolverFunc->setLinkage(getMultiversionLinkage(*this, GD));
if (supportsCOMDAT())
  ResolverFunc->setComdat(
      getModule().getOrInsertComdat(ResolverFunc->getName()));

SmallVector<CodeGenFunction::MultiVersionResolverOption, 10> Options;
const TargetInfo &Target = getTarget();
unsigned Index = 0;
for (const IdentifierInfo *II : DD->cpus()) {
  // Get the name of the target function so we can look it up/create it.
  std::string MangledName = getMangledNameImpl(*this, GD, FD, true) +
                            getCPUSpecificMangling(*this, II->getName());

  llvm::Constant *Func = GetGlobalValue(MangledName);

  if (!Func) {
    GlobalDecl ExistingDecl = Manglings.lookup(MangledName);
    if (ExistingDecl.getDecl() &&
        ExistingDecl.getDecl()->getAsFunction()->isDefined()) {
      EmitGlobalFunctionDefinition(ExistingDecl, nullptr);
      Func = GetGlobalValue(MangledName);
    } else {
      if (!ExistingDecl.getDecl())
        ExistingDecl = GD.getWithMultiVersionIndex(Index);

    Func = GetOrCreateLLVMFunction(
        MangledName, DeclTy, ExistingDecl,
        /*ForVTable=*/false, /*DontDefer=*/true,
        /*IsThunk=*/false, llvm::AttributeList(), ForDefinition);
    }
  }

  llvm::SmallVector<StringRef, 32> Features;
  Target.getCPUSpecificCPUDispatchFeatures(II->getName(), Features);
  llvm::transform(Features, Features.begin(),
                  [](StringRef Str) { return Str.substr(1); });
  llvm::erase_if(Features, [&Target](StringRef Feat) {
    return !Target.validateCpuSupports(Feat);
  });
  Options.emplace_back(cast<llvm::Function>(Func), StringRef{}, Features);
  ++Index;
}

llvm::stable_sort(
    Options, [](const CodeGenFunction::MultiVersionResolverOption &LHS,
                const CodeGenFunction::MultiVersionResolverOption &RHS) {
      return llvm::X86::getCpuSupportsMask(LHS.Conditions.Features) >
             llvm::X86::getCpuSupportsMask(RHS.Conditions.Features);
    });

// If the list contains multiple 'default' versions, such as when it contains
// 'pentium' and 'generic', don't emit the call to the generic one (since we
// always run on at least a 'pentium'). We do this by deleting the 'least
// advanced' (read, lowest mangling letter).
while (Options.size() > 1 &&
       llvm::X86::getCpuSupportsMask(
           (Options.end() - 2)->Conditions.Features) == 0) {
  StringRef LHSName = (Options.end() - 2)->Function->getName();
  StringRef RHSName = (Options.end() - 1)->Function->getName();
  if (LHSName.compare(RHSName) < 0)
    Options.erase(Options.end() - 2);
  else
    Options.erase(Options.end() - 1);
}

CodeGenFunction CGF(*this);
CGF.EmitMultiVersionResolver(ResolverFunc, Options);

if (getTarget().supportsIFunc()) {
  llvm::GlobalValue::LinkageTypes Linkage = getMultiversionLinkage(*this, GD);
  auto *IFunc = cast<llvm::GlobalValue>(
      GetOrCreateMultiVersionResolver(GD, DeclTy, FD));

  // Fix up function declarations that were created for cpu_specific before
  // cpu_dispatch was known
  if (!dyn_cast<llvm::GlobalIFunc>(IFunc)) {
    assert(cast<llvm::Function>(IFunc)->isDeclaration())(static_cast <bool> (cast<llvm::Function>(IFunc)->
isDeclaration()) ? void (0) : __assert_fail ("cast<llvm::Function>(IFunc)->isDeclaration()"
, "clang/lib/CodeGen/CodeGenModule.cpp", 3614, __extension__ __PRETTY_FUNCTION__
));
    auto *GI = llvm::GlobalIFunc::create(DeclTy, 0, Linkage, "", ResolverFunc,
                                         &getModule());
    GI->takeName(IFunc);
    IFunc->replaceAllUsesWith(GI);
    IFunc->eraseFromParent();
    IFunc = GI;
  }

  std::string AliasName = getMangledNameImpl(
      *this, GD, FD, /*OmitMultiVersionMangling=*/true);
  llvm::Constant *AliasFunc = GetGlobalValue(AliasName);
  if (!AliasFunc) {
    auto *GA = llvm::GlobalAlias::create(DeclTy, 0, Linkage, AliasName, IFunc,
                                         &getModule());
    SetCommonAttributes(GD, GA);
  }
}
3632}

3634/// If a dispatcher for the specified mangled name is not in the module, create
3635/// and return an llvm Function with the specified type.
3636llvm::Constant *CodeGenModule::GetOrCreateMultiVersionResolver(
  GlobalDecl GD, llvm::Type *DeclTy, const FunctionDecl *FD) {
std::string MangledName =
    getMangledNameImpl(*this, GD, FD, /*OmitMultiVersionMangling=*/true);

// Holds the name of the resolver, in ifunc mode this is the ifunc (which has
// a separate resolver).
std::string ResolverName = MangledName;
if (getTarget().supportsIFunc())
15
←
Taking false branch→
  ResolverName += ".ifunc";
else if (FD->isTargetMultiVersion())
16
←
Assuming the condition is false→
17
←
Taking false branch→
  ResolverName += ".resolver";

// If this already exists, just return that one.
if (llvm::GlobalValue *ResolverGV = GetGlobalValue(ResolverName))
18
←
Assuming 'ResolverGV' is null→
19
←
Taking false branch→
  return ResolverGV;

// Since this is the first time we've created this IFunc, make sure
// that we put this multiversioned function into the list to be
// replaced later if necessary (target multiversioning only).
if (FD->isTargetMultiVersion())
20
←
Assuming the condition is false→
21
←
Taking false branch→
  MultiVersionFuncs.push_back(GD);
else if (FD->isTargetClonesMultiVersion()) {
22
←
Assuming the condition is true→
23
←
Taking true branch→
  // In target_clones multiversioning, make sure we emit this if used.
  auto DDI =
      DeferredDecls.find(getMangledName(GD.getWithMultiVersionIndex(0)));
  if (DDI != DeferredDecls.end()) {
24
←
Calling 'operator!='→
35
←
Returning from 'operator!='→
36
←
Taking false branch→
    addDeferredDeclToEmit(GD);
    DeferredDecls.erase(DDI);
  } else {
    // Emit the symbol of the 1st variant, so that the deferred decls know we
    // need it, otherwise the only global value will be the resolver/ifunc,
    // which end up getting broken if we search for them with GetGlobalValue'.
    GetOrCreateLLVMFunction(
37
←
Calling 'CodeGenModule::GetOrCreateLLVMFunction'→
        getMangledName(GD.getWithMultiVersionIndex(0)), DeclTy, FD,
        /*ForVTable=*/false, /*DontDefer=*/true,
        /*IsThunk=*/false, llvm::AttributeList(), ForDefinition);
  }
}

// For cpu_specific, don't create an ifunc yet because we don't know if the
// cpu_dispatch will be emitted in this translation unit.
if (getTarget().supportsIFunc() && !FD->isCPUSpecificMultiVersion()) {
  llvm::Type *ResolverType = llvm::FunctionType::get(
      llvm::PointerType::get(
          DeclTy, getContext().getTargetAddressSpace(FD->getType())),
      false);
  llvm::Constant *Resolver = GetOrCreateLLVMFunction(
      MangledName + ".resolver", ResolverType, GlobalDecl{},
      /*ForVTable=*/false);
  llvm::GlobalIFunc *GIF =
      llvm::GlobalIFunc::create(DeclTy, 0, getMultiversionLinkage(*this, GD),
                                "", Resolver, &getModule());
  GIF->setName(ResolverName);
  SetCommonAttributes(FD, GIF);

  return GIF;
}

llvm::Constant *Resolver = GetOrCreateLLVMFunction(
    ResolverName, DeclTy, GlobalDecl{}, /*ForVTable=*/false);
assert(isa<llvm::GlobalValue>(Resolver) &&(static_cast <bool> (isa<llvm::GlobalValue>(Resolver
) && "Resolver should be created for the first time")
 ? void (0) : __assert_fail ("isa<llvm::GlobalValue>(Resolver) && \"Resolver should be created for the first time\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3698, __extension__ __PRETTY_FUNCTION__
))
       "Resolver should be created for the first time")(static_cast <bool> (isa<llvm::GlobalValue>(Resolver
) && "Resolver should be created for the first time")
 ? void (0) : __assert_fail ("isa<llvm::GlobalValue>(Resolver) && \"Resolver should be created for the first time\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3698, __extension__ __PRETTY_FUNCTION__
));
SetCommonAttributes(FD, cast<llvm::GlobalValue>(Resolver));
return Resolver;
3701}

3703/// GetOrCreateLLVMFunction - If the specified mangled name is not in the
3704/// module, create and return an llvm Function with the specified type. If there
3705/// is something in the module with the specified name, return it potentially
3706/// bitcasted to the right type.
3707///
3708/// If D is non-null, it specifies a decl that correspond to this.  This is used
3709/// to set the attributes on the function when it is first created.
3710llvm::Constant *CodeGenModule::GetOrCreateLLVMFunction(
  StringRef MangledName, llvm::Type *Ty, GlobalDecl GD, bool ForVTable,
  bool DontDefer, bool IsThunk, llvm::AttributeList ExtraAttrs,
  ForDefinition_t IsForDefinition) {
const Decl *D = GD.getDecl();
38
←
Calling 'GlobalDecl::getDecl'→
50
←
Returning from 'GlobalDecl::getDecl'→
51
←
'D' initialized here→

// Any attempts to use a MultiVersion function should result in retrieving
// the iFunc instead. Name Mangling will handle the rest of the changes.
if (const FunctionDecl *FD9.1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
1
'FD' is non-null
1
'FD' is null
 = cast_or_null<FunctionDecl>(D)) {
9
←
Assuming 'D' is a 'FunctionDecl'→
52
←
Assuming null pointer is passed into cast→
53
←
Assuming pointer value is null→
54
←
Taking false branch→
  // For the device mark the function as one that should be emitted.
  if (getLangOpts().OpenMPIsDevice && OpenMPRuntime &&
10
←
Assuming field 'OpenMPIsDevice' is 0→
      !OpenMPRuntime->markAsGlobalTarget(GD) && FD->isDefined() &&
      !DontDefer && !IsForDefinition) {
    if (const FunctionDecl *FDDef = FD->getDefinition()) {
      GlobalDecl GDDef;
      if (const auto *CD = dyn_cast<CXXConstructorDecl>(FDDef))
        GDDef = GlobalDecl(CD, GD.getCtorType());
      else if (const auto *DD = dyn_cast<CXXDestructorDecl>(FDDef))
        GDDef = GlobalDecl(DD, GD.getDtorType());
      else
        GDDef = GlobalDecl(FDDef);
      EmitGlobal(GDDef);
    }
  }

  if (FD->isMultiVersion()) {
11
←
Assuming the condition is true→
12
←
Taking true branch→
      UpdateMultiVersionNames(GD, FD, MangledName);
    if (!IsForDefinition12.1
'IsForDefinition' is 0
1
'IsForDefinition' is 0
1
'IsForDefinition' is 0
1
'IsForDefinition' is 0
1
'IsForDefinition' is 0
)
13
←
Taking true branch→
      return GetOrCreateMultiVersionResolver(GD, Ty, FD);
14
←
Calling 'CodeGenModule::GetOrCreateMultiVersionResolver'→
  }
}

// Lookup the entry, lazily creating it if necessary.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry) {
55
←
Assuming 'Entry' is non-null→
56
←
Taking true branch→
  if (WeakRefReferences.erase(Entry)) {
57
←
Assuming the condition is false→
    const FunctionDecl *FD = cast_or_null<FunctionDecl>(D);
    if (FD && !FD->hasAttr<WeakAttr>())
      Entry->setLinkage(llvm::Function::ExternalLinkage);
  }

  // Handle dropped DLL attributes.
  if (D57.1
'D' is null
1
'D' is null
1
'D' is null
1
'D' is null
1
'D' is null
 && !D->hasAttr<DLLImportAttr>() && !D->hasAttr<DLLExportAttr>()) {
    Entry->setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);
    setDSOLocal(Entry);
  }

  // If there are two attempts to define the same mangled name, issue an
  // error.
  if (IsForDefinition57.2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
2
'IsForDefinition' is 1
 && !Entry->isDeclaration()) {
58
←
Assuming the condition is true→
59
←
Taking true branch→
    GlobalDecl OtherGD;
    // Check that GD is not yet in DiagnosedConflictingDefinitions is required
    // to make sure that we issue an error only once.
    if (lookupRepresentativeDecl(MangledName, OtherGD) &&
61
←
Assuming the condition is true→
62
←
Taking true branch→
        (GD.getCanonicalDecl().getDecl() !=
60
←
Assuming the condition is true→
         OtherGD.getCanonicalDecl().getDecl()) &&
        DiagnosedConflictingDefinitions.insert(GD).second) {
      getDiags().Report(D->getLocation(), diag::err_duplicate_mangled_name)
63
←
Called C++ object pointer is null
          << MangledName;
      getDiags().Report(OtherGD.getDecl()->getLocation(),
                        diag::note_previous_definition);
    }
  }

  if ((isa<llvm::Function>(Entry) || isa<llvm::GlobalAlias>(Entry)) &&
      (Entry->getValueType() == Ty)) {
    return Entry;
  }

  // Make sure the result is of the correct type.
  // (If function is requested for a definition, we always need to create a new
  // function, not just return a bitcast.)
  if (!IsForDefinition)
    return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo());
}

// This function doesn't have a complete type (for example, the return
// type is an incomplete struct). Use a fake type instead, and make
// sure not to try to set attributes.
bool IsIncompleteFunction = false;

llvm::FunctionType *FTy;
if (isa<llvm::FunctionType>(Ty)) {
  FTy = cast<llvm::FunctionType>(Ty);
} else {
  FTy = llvm::FunctionType::get(VoidTy, false);
  IsIncompleteFunction = true;
}

llvm::Function *F =
    llvm::Function::Create(FTy, llvm::Function::ExternalLinkage,
                           Entry ? StringRef() : MangledName, &getModule());

// If we already created a function with the same mangled name (but different
// type) before, take its name and add it to the list of functions to be
// replaced with F at the end of CodeGen.
//
// This happens if there is a prototype for a function (e.g. "int f()") and
// then a definition of a different type (e.g. "int f(int x)").
if (Entry) {
  F->takeName(Entry);

  // This might be an implementation of a function without a prototype, in
  // which case, try to do special replacement of calls which match the new
  // prototype.  The really key thing here is that we also potentially drop
  // arguments from the call site so as to make a direct call, which makes the
  // inliner happier and suppresses a number of optimizer warnings (!) about
  // dropping arguments.
  if (!Entry->use_empty()) {
    ReplaceUsesOfNonProtoTypeWithRealFunction(Entry, F);
    Entry->removeDeadConstantUsers();
  }

  llvm::Constant *BC = llvm::ConstantExpr::getBitCast(
      F, Entry->getValueType()->getPointerTo());
  addGlobalValReplacement(Entry, BC);
}

assert(F->getName() == MangledName && "name was uniqued!")(static_cast <bool> (F->getName() == MangledName &&
 "name was uniqued!") ? void (0) : __assert_fail ("F->getName() == MangledName && \"name was uniqued!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3828, __extension__ __PRETTY_FUNCTION__
));
if (D)
  SetFunctionAttributes(GD, F, IsIncompleteFunction, IsThunk);
if (ExtraAttrs.hasFnAttrs()) {
  llvm::AttrBuilder B(F->getContext(), ExtraAttrs.getFnAttrs());
  F->addFnAttrs(B);
}

if (!DontDefer) {
  // All MSVC dtors other than the base dtor are linkonce_odr and delegate to
  // each other bottoming out with the base dtor.  Therefore we emit non-base
  // dtors on usage, even if there is no dtor definition in the TU.
  if (D && isa<CXXDestructorDecl>(D) &&
      getCXXABI().useThunkForDtorVariant(cast<CXXDestructorDecl>(D),
                                         GD.getDtorType()))
    addDeferredDeclToEmit(GD);

  // This is the first use or definition of a mangled name.  If there is a
  // deferred decl with this name, remember that we need to emit it at the end
  // of the file.
  auto DDI = DeferredDecls.find(MangledName);
  if (DDI != DeferredDecls.end()) {
    // Move the potentially referenced deferred decl to the
    // DeferredDeclsToEmit list, and remove it from DeferredDecls (since we
    // don't need it anymore).
    addDeferredDeclToEmit(DDI->second);
    DeferredDecls.erase(DDI);

    // Otherwise, there are cases we have to worry about where we're
    // using a declaration for which we must emit a definition but where
    // we might not find a top-level definition:
    //   - member functions defined inline in their classes
    //   - friend functions defined inline in some class
    //   - special member functions with implicit definitions
    // If we ever change our AST traversal to walk into class methods,
    // this will be unnecessary.
    //
    // We also don't emit a definition for a function if it's going to be an
    // entry in a vtable, unless it's already marked as used.
  } else if (getLangOpts().CPlusPlus && D) {
    // Look for a declaration that's lexically in a record.
    for (const auto *FD = cast<FunctionDecl>(D)->getMostRecentDecl(); FD;
         FD = FD->getPreviousDecl()) {
      if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) {
        if (FD->doesThisDeclarationHaveABody()) {
          addDeferredDeclToEmit(GD.getWithDecl(FD));
          break;
        }
      }
    }
  }
}

// Make sure the result is of the requested type.
if (!IsIncompleteFunction) {
  assert(F->getFunctionType() == Ty)(static_cast <bool> (F->getFunctionType() == Ty) ? void
 (0) : __assert_fail ("F->getFunctionType() == Ty", "clang/lib/CodeGen/CodeGenModule.cpp"
, 3883, __extension__ __PRETTY_FUNCTION__));
  return F;
}

llvm::Type *PTy = llvm::PointerType::getUnqual(Ty);
return llvm::ConstantExpr::getBitCast(F, PTy);
3889}

3891/// GetAddrOfFunction - Return the address of the given function.  If Ty is
3892/// non-null, then this function will use the specified type if it has to
3893/// create it (this occurs when we see a definition of the function).
3894llvm::Constant *CodeGenModule::GetAddrOfFunction(GlobalDecl GD,
                                               llvm::Type *Ty,
                                               bool ForVTable,
                                               bool DontDefer,
                                            ForDefinition_t IsForDefinition) {
assert(!cast<FunctionDecl>(GD.getDecl())->isConsteval() &&(static_cast <bool> (!cast<FunctionDecl>(GD.getDecl
())->isConsteval() && "consteval function should never be emitted"
) ? void (0) : __assert_fail ("!cast<FunctionDecl>(GD.getDecl())->isConsteval() && \"consteval function should never be emitted\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3900, __extension__ __PRETTY_FUNCTION__
))
2
←
The object is a 'FunctionDecl'→
3
←
'?' condition is true→
       "consteval function should never be emitted")(static_cast <bool> (!cast<FunctionDecl>(GD.getDecl
())->isConsteval() && "consteval function should never be emitted"
) ? void (0) : __assert_fail ("!cast<FunctionDecl>(GD.getDecl())->isConsteval() && \"consteval function should never be emitted\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 3900, __extension__ __PRETTY_FUNCTION__
));
// If there was no specific requested type, just convert it now.
if (!Ty3.1
'Ty' is null
1
'Ty' is null
1
'Ty' is null
1
'Ty' is null
1
'Ty' is null
) {
4
←
Taking true branch→
  const auto *FD = cast<FunctionDecl>(GD.getDecl());
5
←
The object is a 'FunctionDecl'→
  Ty = getTypes().ConvertType(FD->getType());
}

// Devirtualized destructor calls may come through here instead of via
// getAddrOfCXXStructor. Make sure we use the MS ABI base destructor instead
// of the complete destructor when necessary.
if (const auto *DD6.1
'DD' is null
1
'DD' is null
1
'DD' is null
1
'DD' is null
1
'DD' is null
 = dyn_cast<CXXDestructorDecl>(GD.getDecl())) {
6
←
Assuming the object is not a 'CXXDestructorDecl'→
7
←
Taking false branch→
  if (getTarget().getCXXABI().isMicrosoft() &&
      GD.getDtorType() == Dtor_Complete &&
      DD->getParent()->getNumVBases() == 0)
    GD = GlobalDecl(DD, Dtor_Base);
}

StringRef MangledName = getMangledName(GD);
auto *F = GetOrCreateLLVMFunction(MangledName, Ty, GD, ForVTable, DontDefer,
8
←
Calling 'CodeGenModule::GetOrCreateLLVMFunction'→
                                  /*IsThunk=*/false, llvm::AttributeList(),
                                  IsForDefinition);
// Returns kernel handle for HIP kernel stub function.
if (LangOpts.CUDA && !LangOpts.CUDAIsDevice &&
    cast<FunctionDecl>(GD.getDecl())->hasAttr<CUDAGlobalAttr>()) {
  auto *Handle = getCUDARuntime().getKernelHandle(
      cast<llvm::Function>(F->stripPointerCasts()), GD);
  if (IsForDefinition)
    return F;
  return llvm::ConstantExpr::getBitCast(Handle, Ty->getPointerTo());
}
return F;
3931}

3933llvm::Constant *CodeGenModule::GetFunctionStart(const ValueDecl *Decl) {
llvm::GlobalValue *F =
    cast<llvm::GlobalValue>(GetAddrOfFunction(Decl)->stripPointerCasts());
1
Calling 'CodeGenModule::GetAddrOfFunction'→

return llvm::ConstantExpr::getBitCast(llvm::NoCFIValue::get(F),
                                      llvm::Type::getInt8PtrTy(VMContext));
3939}

3941static const FunctionDecl *
3942GetRuntimeFunctionDecl(ASTContext &C, StringRef Name) {
TranslationUnitDecl *TUDecl = C.getTranslationUnitDecl();
DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);

IdentifierInfo &CII = C.Idents.get(Name);
for (const auto *Result : DC->lookup(&CII))
  if (const auto *FD = dyn_cast<FunctionDecl>(Result))
    return FD;

if (!C.getLangOpts().CPlusPlus)
  return nullptr;

// Demangle the premangled name from getTerminateFn()
IdentifierInfo &CXXII =
    (Name == "_ZSt9terminatev" || Name == "?terminate@@YAXXZ")
        ? C.Idents.get("terminate")
        : C.Idents.get(Name);

for (const auto &N : {"__cxxabiv1", "std"}) {
  IdentifierInfo &NS = C.Idents.get(N);
  for (const auto *Result : DC->lookup(&NS)) {
    const NamespaceDecl *ND = dyn_cast<NamespaceDecl>(Result);
    if (auto *LSD = dyn_cast<LinkageSpecDecl>(Result))
      for (const auto *Result : LSD->lookup(&NS))
        if ((ND = dyn_cast<NamespaceDecl>(Result)))
          break;

    if (ND)
      for (const auto *Result : ND->lookup(&CXXII))
        if (const auto *FD = dyn_cast<FunctionDecl>(Result))
          return FD;
  }
}

return nullptr;
3977}

3979/// CreateRuntimeFunction - Create a new runtime function with the specified
3980/// type and name.
3981llvm::FunctionCallee
3982CodeGenModule::CreateRuntimeFunction(llvm::FunctionType *FTy, StringRef Name,
                                   llvm::AttributeList ExtraAttrs, bool Local,
                                   bool AssumeConvergent) {
if (AssumeConvergent) {
  ExtraAttrs =
      ExtraAttrs.addFnAttribute(VMContext, llvm::Attribute::Convergent);
}

llvm::Constant *C =
    GetOrCreateLLVMFunction(Name, FTy, GlobalDecl(), /*ForVTable=*/false,
                            /*DontDefer=*/false, /*IsThunk=*/false,
                            ExtraAttrs);

if (auto *F = dyn_cast<llvm::Function>(C)) {
  if (F->empty()) {
    F->setCallingConv(getRuntimeCC());

    // In Windows Itanium environments, try to mark runtime functions
    // dllimport. For Mingw and MSVC, don't. We don't really know if the user
    // will link their standard library statically or dynamically. Marking
    // functions imported when they are not imported can cause linker errors
    // and warnings.
    if (!Local && getTriple().isWindowsItaniumEnvironment() &&
        !getCodeGenOpts().LTOVisibilityPublicStd) {
      const FunctionDecl *FD = GetRuntimeFunctionDecl(Context, Name);
      if (!FD || FD->hasAttr<DLLImportAttr>()) {
        F->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
        F->setLinkage(llvm::GlobalValue::ExternalLinkage);
      }
    }
    setDSOLocal(F);
  }
}

return {FTy, C};
4017}

4019/// isTypeConstant - Determine whether an object of this type can be emitted
4020/// as a constant.
4021///
4022/// If ExcludeCtor is true, the duration when the object's constructor runs
4023/// will not be considered. The caller will need to verify that the object is
4024/// not written to during its construction.
4025bool CodeGenModule::isTypeConstant(QualType Ty, bool ExcludeCtor) {
if (!Ty.isConstant(Context) && !Ty->isReferenceType())
  return false;

if (Context.getLangOpts().CPlusPlus) {
  if (const CXXRecordDecl *Record
        = Context.getBaseElementType(Ty)->getAsCXXRecordDecl())
    return ExcludeCtor && !Record->hasMutableFields() &&
           Record->hasTrivialDestructor();
}

return true;
4037}

4039/// GetOrCreateLLVMGlobal - If the specified mangled name is not in the module,
4040/// create and return an llvm GlobalVariable with the specified type and address
4041/// space. If there is something in the module with the specified name, return
4042/// it potentially bitcasted to the right type.
4043///
4044/// If D is non-null, it specifies a decl that correspond to this.  This is used
4045/// to set the attributes on the global when it is first created.
4046///
4047/// If IsForDefinition is true, it is guaranteed that an actual global with
4048/// type Ty will be returned, not conversion of a variable with the same
4049/// mangled name but some other type.
4050llvm::Constant *
4051CodeGenModule::GetOrCreateLLVMGlobal(StringRef MangledName, llvm::Type *Ty,
                                   LangAS AddrSpace, const VarDecl *D,
                                   ForDefinition_t IsForDefinition) {
// Lookup the entry, lazily creating it if necessary.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
unsigned TargetAS = getContext().getTargetAddressSpace(AddrSpace);
if (Entry) {
  if (WeakRefReferences.erase(Entry)) {
    if (D && !D->hasAttr<WeakAttr>())
      Entry->setLinkage(llvm::Function::ExternalLinkage);
  }

  // Handle dropped DLL attributes.
  if (D && !D->hasAttr<DLLImportAttr>() && !D->hasAttr<DLLExportAttr>())
    Entry->setDLLStorageClass(llvm::GlobalValue::DefaultStorageClass);

  if (LangOpts.OpenMP && !LangOpts.OpenMPSimd && D)
    getOpenMPRuntime().registerTargetGlobalVariable(D, Entry);

  if (Entry->getValueType() == Ty && Entry->getAddressSpace() == TargetAS)
    return Entry;

  // If there are two attempts to define the same mangled name, issue an
  // error.
  if (IsForDefinition && !Entry->isDeclaration()) {
    GlobalDecl OtherGD;
    const VarDecl *OtherD;

    // Check that D is not yet in DiagnosedConflictingDefinitions is required
    // to make sure that we issue an error only once.
    if (D && lookupRepresentativeDecl(MangledName, OtherGD) &&
        (D->getCanonicalDecl() != OtherGD.getCanonicalDecl().getDecl()) &&
        (OtherD = dyn_cast<VarDecl>(OtherGD.getDecl())) &&
        OtherD->hasInit() &&
        DiagnosedConflictingDefinitions.insert(D).second) {
      getDiags().Report(D->getLocation(), diag::err_duplicate_mangled_name)
          << MangledName;
      getDiags().Report(OtherGD.getDecl()->getLocation(),
                        diag::note_previous_definition);
    }
  }

  // Make sure the result is of the correct type.
  if (Entry->getType()->getAddressSpace() != TargetAS) {
    return llvm::ConstantExpr::getAddrSpaceCast(Entry,
                                                Ty->getPointerTo(TargetAS));
  }

  // (If global is requested for a definition, we always need to create a new
  // global, not just return a bitcast.)
  if (!IsForDefinition)
    return llvm::ConstantExpr::getBitCast(Entry, Ty->getPointerTo(TargetAS));
}

auto DAddrSpace = GetGlobalVarAddressSpace(D);

auto *GV = new llvm::GlobalVariable(
    getModule(), Ty, false, llvm::GlobalValue::ExternalLinkage, nullptr,
    MangledName, nullptr, llvm::GlobalVariable::NotThreadLocal,
    getContext().getTargetAddressSpace(DAddrSpace));

// If we already created a global with the same mangled name (but different
// type) before, take its name and remove it from its parent.
if (Entry) {
  GV->takeName(Entry);

  if (!Entry->use_empty()) {
    llvm::Constant *NewPtrForOldDecl =
        llvm::ConstantExpr::getBitCast(GV, Entry->getType());
    Entry->replaceAllUsesWith(NewPtrForOldDecl);
  }

  Entry->eraseFromParent();
}

// This is the first use or definition of a mangled name.  If there is a
// deferred decl with this name, remember that we need to emit it at the end
// of the file.
auto DDI = DeferredDecls.find(MangledName);
if (DDI != DeferredDecls.end()) {
  // Move the potentially referenced deferred decl to the DeferredDeclsToEmit
  // list, and remove it from DeferredDecls (since we don't need it anymore).
  addDeferredDeclToEmit(DDI->second);
  DeferredDecls.erase(DDI);
}

// Handle things which are present even on external declarations.
if (D) {
  if (LangOpts.OpenMP && !LangOpts.OpenMPSimd)
    getOpenMPRuntime().registerTargetGlobalVariable(D, GV);

  // FIXME: This code is overly simple and should be merged with other global
  // handling.
  GV->setConstant(isTypeConstant(D->getType(), false));

  GV->setAlignment(getContext().getDeclAlign(D).getAsAlign());

  setLinkageForGV(GV, D);

  if (D->getTLSKind()) {
    if (D->getTLSKind() == VarDecl::TLS_Dynamic)
      CXXThreadLocals.push_back(D);
    setTLSMode(GV, *D);
  }

  setGVProperties(GV, D);

  // If required by the ABI, treat declarations of static data members with
  // inline initializers as definitions.
  if (getContext().isMSStaticDataMemberInlineDefinition(D)) {
    EmitGlobalVarDefinition(D);
  }

  // Emit section information for extern variables.
  if (D->hasExternalStorage()) {
    if (const SectionAttr *SA = D->getAttr<SectionAttr>())
      GV->setSection(SA->getName());
  }

  // Handle XCore specific ABI requirements.
  if (getTriple().getArch() == llvm::Triple::xcore &&
      D->getLanguageLinkage() == CLanguageLinkage &&
      D->getType().isConstant(Context) &&
      isExternallyVisible(D->getLinkageAndVisibility().getLinkage()))
    GV->setSection(".cp.rodata");

  // Check if we a have a const declaration with an initializer, we may be
  // able to emit it as available_externally to expose it's value to the
  // optimizer.
  if (Context.getLangOpts().CPlusPlus && GV->hasExternalLinkage() &&
      D->getType().isConstQualified() && !GV->hasInitializer() &&
      !D->hasDefinition() && D->hasInit() && !D->hasAttr<DLLImportAttr>()) {
    const auto *Record =
        Context.getBaseElementType(D->getType())->getAsCXXRecordDecl();
    bool HasMutableFields = Record && Record->hasMutableFields();
    if (!HasMutableFields) {
      const VarDecl *InitDecl;
      const Expr *InitExpr = D->getAnyInitializer(InitDecl);
      if (InitExpr) {
        ConstantEmitter emitter(*this);
        llvm::Constant *Init = emitter.tryEmitForInitializer(*InitDecl);
        if (Init) {
          auto *InitType = Init->getType();
          if (GV->getValueType() != InitType) {
            // The type of the initializer does not match the definition.
            // This happens when an initializer has a different type from
            // the type of the global (because of padding at the end of a
            // structure for instance).
            GV->setName(StringRef());
            // Make a new global with the correct type, this is now guaranteed
            // to work.
            auto *NewGV = cast<llvm::GlobalVariable>(
                GetAddrOfGlobalVar(D, InitType, IsForDefinition)
                    ->stripPointerCasts());

            // Erase the old global, since it is no longer used.
            GV->eraseFromParent();
            GV = NewGV;
          } else {
            GV->setInitializer(Init);
            GV->setConstant(true);
            GV->setLinkage(llvm::GlobalValue::AvailableExternallyLinkage);
          }
          emitter.finalize(GV);
        }
      }
    }
  }
}

if (GV->isDeclaration()) {
  getTargetCodeGenInfo().setTargetAttributes(D, GV, *this);
  // External HIP managed variables needed to be recorded for transformation
  // in both device and host compilations.
  if (getLangOpts().CUDA && D && D->hasAttr<HIPManagedAttr>() &&
      D->hasExternalStorage())
    getCUDARuntime().handleVarRegistration(D, *GV);
}

LangAS ExpectedAS =
    D ? D->getType().getAddressSpace()
      : (LangOpts.OpenCL ? LangAS::opencl_global : LangAS::Default);
assert(getContext().getTargetAddressSpace(ExpectedAS) == TargetAS)(static_cast <bool> (getContext().getTargetAddressSpace
(ExpectedAS) == TargetAS) ? void (0) : __assert_fail ("getContext().getTargetAddressSpace(ExpectedAS) == TargetAS"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4233, __extension__ __PRETTY_FUNCTION__
));
if (DAddrSpace != ExpectedAS) {
  return getTargetCodeGenInfo().performAddrSpaceCast(
      *this, GV, DAddrSpace, ExpectedAS, Ty->getPointerTo(TargetAS));
}

return GV;
4240}

4242llvm::Constant *
4243CodeGenModule::GetAddrOfGlobal(GlobalDecl GD, ForDefinition_t IsForDefinition) {
const Decl *D = GD.getDecl();

if (isa<CXXConstructorDecl>(D) || isa<CXXDestructorDecl>(D))
  return getAddrOfCXXStructor(GD, /*FnInfo=*/nullptr, /*FnType=*/nullptr,
                              /*DontDefer=*/false, IsForDefinition);

if (isa<CXXMethodDecl>(D)) {
  auto FInfo =
      &getTypes().arrangeCXXMethodDeclaration(cast<CXXMethodDecl>(D));
  auto Ty = getTypes().GetFunctionType(*FInfo);
  return GetAddrOfFunction(GD, Ty, /*ForVTable=*/false, /*DontDefer=*/false,
                           IsForDefinition);
}

if (isa<FunctionDecl>(D)) {
  const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
  llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);
  return GetAddrOfFunction(GD, Ty, /*ForVTable=*/false, /*DontDefer=*/false,
                           IsForDefinition);
}

return GetAddrOfGlobalVar(cast<VarDecl>(D), /*Ty=*/nullptr, IsForDefinition);
4266}

4268llvm::GlobalVariable *CodeGenModule::CreateOrReplaceCXXRuntimeVariable(
  StringRef Name, llvm::Type *Ty, llvm::GlobalValue::LinkageTypes Linkage,
  unsigned Alignment) {
llvm::GlobalVariable *GV = getModule().getNamedGlobal(Name);
llvm::GlobalVariable *OldGV = nullptr;

if (GV) {
  // Check if the variable has the right type.
  if (GV->getValueType() == Ty)
    return GV;

  // Because C++ name mangling, the only way we can end up with an already
  // existing global with the same name is if it has been declared extern "C".
  assert(GV->isDeclaration() && "Declaration has wrong type!")(static_cast <bool> (GV->isDeclaration() && "Declaration has wrong type!"
) ? void (0) : __assert_fail ("GV->isDeclaration() && \"Declaration has wrong type!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 4281, __extension__ __PRETTY_FUNCTION__
));
  OldGV = GV;
}

// Create a new variable.
GV = new llvm::GlobalVariable(getModule(), Ty, /*isConstant=*/true,
                              Linkage, nullptr, Name);

if (OldGV) {
  // Replace occurrences of the old variable if needed.
  GV->takeName(OldGV);

  if (!OldGV->use_empty()) {
    llvm::Constant *NewPtrForOldDecl =
    llvm::ConstantExpr::getBitCast(GV, OldGV->getType());
    OldGV->replaceAllUsesWith(NewPtrForOldDecl);
  }

  OldGV->eraseFromParent();
}

if (supportsCOMDAT() && GV->isWeakForLinker() &&
    !GV->hasAvailableExternallyLinkage())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));

GV->setAlignment(llvm::MaybeAlign(Alignment));

return GV;
4309}

4311/// GetAddrOfGlobalVar - Return the llvm::Constant for the address of the
4312/// given global variable.  If Ty is non-null and if the global doesn't exist,
4313/// then it will be created with the specified type instead of whatever the
4314/// normal requested type would be. If IsForDefinition is true, it is guaranteed
4315/// that an actual global with type Ty will be returned, not conversion of a
4316/// variable with the same mangled name but some other type.
4317llvm::Constant *CodeGenModule::GetAddrOfGlobalVar(const VarDecl *D,
                                                llvm::Type *Ty,
                                         ForDefinition_t IsForDefinition) {
assert(D->hasGlobalStorage() && "Not a global variable")(static_cast <bool> (D->hasGlobalStorage() &&
 "Not a global variable") ? void (0) : __assert_fail ("D->hasGlobalStorage() && \"Not a global variable\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 4320, __extension__ __PRETTY_FUNCTION__
));
QualType ASTTy = D->getType();
if (!Ty)
  Ty = getTypes().ConvertTypeForMem(ASTTy);

StringRef MangledName = getMangledName(D);
return GetOrCreateLLVMGlobal(MangledName, Ty, ASTTy.getAddressSpace(), D,
                             IsForDefinition);
4328}

4330/// CreateRuntimeVariable - Create a new runtime global variable with the
4331/// specified type and name.
4332llvm::Constant *
4333CodeGenModule::CreateRuntimeVariable(llvm::Type *Ty,
                                   StringRef Name) {
LangAS AddrSpace = getContext().getLangOpts().OpenCL ? LangAS::opencl_global
                                                     : LangAS::Default;
auto *Ret = GetOrCreateLLVMGlobal(Name, Ty, AddrSpace, nullptr);
setDSOLocal(cast<llvm::GlobalValue>(Ret->stripPointerCasts()));
return Ret;
4340}

4342void CodeGenModule::EmitTentativeDefinition(const VarDecl *D) {
assert(!D->getInit() && "Cannot emit definite definitions here!")(static_cast <bool> (!D->getInit() && "Cannot emit definite definitions here!"
) ? void (0) : __assert_fail ("!D->getInit() && \"Cannot emit definite definitions here!\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 4343, __extension__ __PRETTY_FUNCTION__
));

StringRef MangledName = getMangledName(D);
llvm::GlobalValue *GV = GetGlobalValue(MangledName);

// We already have a definition, not declaration, with the same mangled name.
// Emitting of declaration is not required (and actually overwrites emitted
// definition).
if (GV && !GV->isDeclaration())
  return;

// If we have not seen a reference to this variable yet, place it into the
// deferred declarations table to be emitted if needed later.
if (!MustBeEmitted(D) && !GV) {
    DeferredDecls[MangledName] = D;
    return;
}

// The tentative definition is the only definition.
EmitGlobalVarDefinition(D);
4363}

4365void CodeGenModule::EmitExternalDeclaration(const VarDecl *D) {
EmitExternalVarDeclaration(D);
4367}

4369CharUnits CodeGenModule::GetTargetTypeStoreSize(llvm::Type *Ty) const {
return Context.toCharUnitsFromBits(
    getDataLayout().getTypeStoreSizeInBits(Ty));
4372}

4374LangAS CodeGenModule::GetGlobalVarAddressSpace(const VarDecl *D) {
if (LangOpts.OpenCL) {
  LangAS AS = D ? D->getType().getAddressSpace() : LangAS::opencl_global;
  assert(AS == LangAS::opencl_global ||(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
))
         AS == LangAS::opencl_global_device ||(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
))
         AS == LangAS::opencl_global_host ||(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
))
         AS == LangAS::opencl_constant ||(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
))
         AS == LangAS::opencl_local ||(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
))
         AS >= LangAS::FirstTargetAddressSpace)(static_cast <bool> (AS == LangAS::opencl_global || AS ==
 LangAS::opencl_global_device || AS == LangAS::opencl_global_host
 || AS == LangAS::opencl_constant || AS == LangAS::opencl_local
 || AS >= LangAS::FirstTargetAddressSpace) ? void (0) : __assert_fail
 ("AS == LangAS::opencl_global || AS == LangAS::opencl_global_device || AS == LangAS::opencl_global_host || AS == LangAS::opencl_constant || AS == LangAS::opencl_local || AS >= LangAS::FirstTargetAddressSpace"
, "clang/lib/CodeGen/CodeGenModule.cpp", 4382, __extension__ __PRETTY_FUNCTION__
));
  return AS;
}

if (LangOpts.SYCLIsDevice &&
    (!D || D->getType().getAddressSpace() == LangAS::Default))
  return LangAS::sycl_global;

if (LangOpts.CUDA && LangOpts.CUDAIsDevice) {
  if (D && D->hasAttr<CUDAConstantAttr>())
    return LangAS::cuda_constant;
  else if (D && D->hasAttr<CUDASharedAttr>())
    return LangAS::cuda_shared;
  else if (D && D->hasAttr<CUDADeviceAttr>())
    return LangAS::cuda_device;
  else if (D && D->getType().isConstQualified())
    return LangAS::cuda_constant;
  else
    return LangAS::cuda_device;
}

if (LangOpts.OpenMP) {
  LangAS AS;
  if (OpenMPRuntime->hasAllocateAttributeForGlobalVar(D, AS))
    return AS;
}
return getTargetCodeGenInfo().getGlobalVarAddressSpace(*this, D);
4409}

4411LangAS CodeGenModule::GetGlobalConstantAddressSpace() const {
// OpenCL v1.2 s6.5.3: a string literal is in the constant address space.
if (LangOpts.OpenCL)
  return LangAS::opencl_constant;
if (LangOpts.SYCLIsDevice)
  return LangAS::sycl_global;
if (LangOpts.HIP && LangOpts.CUDAIsDevice && getTriple().isSPIRV())
  // For HIPSPV map literals to cuda_device (maps to CrossWorkGroup in SPIR-V)
  // instead of default AS (maps to Generic in SPIR-V). Otherwise, we end up
  // with OpVariable instructions with Generic storage class which is not
  // allowed (SPIR-V V1.6 s3.42.8). Also, mapping literals to SPIR-V
  // UniformConstant storage class is not viable as pointers to it may not be
  // casted to Generic pointers which are used to model HIP's "flat" pointers.
  return LangAS::cuda_device;
if (auto AS = getTarget().getConstantAddressSpace())
  return AS.getValue();
return LangAS::Default;
4428}

4430// In address space agnostic languages, string literals are in default address
4431// space in AST. However, certain targets (e.g. amdgcn) request them to be
4432// emitted in constant address space in LLVM IR. To be consistent with other
4433// parts of AST, string literal global variables in constant address space
4434// need to be casted to default address space before being put into address
4435// map and referenced by other part of CodeGen.
4436// In OpenCL, string literals are in constant address space in AST, therefore
4437// they should not be casted to default address space.
4438static llvm::Constant *
4439castStringLiteralToDefaultAddressSpace(CodeGenModule &CGM,
                                     llvm::GlobalVariable *GV) {
llvm::Constant *Cast = GV;
if (!CGM.getLangOpts().OpenCL) {
  auto AS = CGM.GetGlobalConstantAddressSpace();
  if (AS != LangAS::Default)
    Cast = CGM.getTargetCodeGenInfo().performAddrSpaceCast(
        CGM, GV, AS, LangAS::Default,
        GV->getValueType()->getPointerTo(
            CGM.getContext().getTargetAddressSpace(LangAS::Default)));
}
return Cast;
4451}

4453template<typename SomeDecl>
4454void CodeGenModule::MaybeHandleStaticInExternC(const SomeDecl *D,
                                             llvm::GlobalValue *GV) {
if (!getLangOpts().CPlusPlus)
  return;

// Must have 'used' attribute, or else inline assembly can't rely on
// the name existing.
if (!D->template hasAttr<UsedAttr>())
  return;

// Must have internal linkage and an ordinary name.
if (!D->getIdentifier() || D->getFormalLinkage() != InternalLinkage)
  return;

// Must be in an extern "C" context. Entities declared directly within
// a record are not extern "C" even if the record is in such a context.
const SomeDecl *First = D->getFirstDecl();
if (First->getDeclContext()->isRecord() || !First->isInExternCContext())
  return;

// OK, this is an internal linkage entity inside an extern "C" linkage
// specification. Make a note of that so we can give it the "expected"
// mangled name if nothing else is using that name.
std::pair<StaticExternCMap::iterator, bool> R =
    StaticExternCValues.insert(std::make_pair(D->getIdentifier(), GV));

// If we have multiple internal linkage entities with the same name
// in extern "C" regions, none of them gets that name.
if (!R.second)
  R.first->second = nullptr;
4484}

4486static bool shouldBeInCOMDAT(CodeGenModule &CGM, const Decl &D) {
if (!CGM.supportsCOMDAT())
  return false;

if (D.hasAttr<SelectAnyAttr>())
  return true;

GVALinkage Linkage;
if (auto *VD = dyn_cast<VarDecl>(&D))
  Linkage = CGM.getContext().GetGVALinkageForVariable(VD);
else
  Linkage = CGM.getContext().GetGVALinkageForFunction(cast<FunctionDecl>(&D));

switch (Linkage) {
case GVA_Internal:
case GVA_AvailableExternally:
case GVA_StrongExternal:
  return false;
case GVA_DiscardableODR:
case GVA_StrongODR:
  return true;
}
llvm_unreachable("No such linkage")::llvm::llvm_unreachable_internal("No such linkage", "clang/lib/CodeGen/CodeGenModule.cpp"
, 4508);
4509}

4511void CodeGenModule::maybeSetTrivialComdat(const Decl &D,
                                        llvm::GlobalObject &GO) {
if (!shouldBeInCOMDAT(*this, D))
  return;
GO.setComdat(TheModule.getOrInsertComdat(GO.getName()));
4516}

4518/// Pass IsTentative as true if you want to create a tentative definition.
4519void CodeGenModule::EmitGlobalVarDefinition(const VarDecl *D,
                                          bool IsTentative) {
// OpenCL global variables of sampler type are translated to function calls,
// therefore no need to be translated.
QualType ASTTy = D->getType();
if (getLangOpts().OpenCL && ASTTy->isSamplerT())
  return;

// If this is OpenMP device, check if it is legal to emit this global
// normally.
if (LangOpts.OpenMPIsDevice && OpenMPRuntime &&
    OpenMPRuntime->emitTargetGlobalVariable(D))
  return;

llvm::TrackingVH<llvm::Constant> Init;
bool NeedsGlobalCtor = false;
bool NeedsGlobalDtor =
    D->needsDestruction(getContext()) == QualType::DK_cxx_destructor;

const VarDecl *InitDecl;
const Expr *InitExpr = D->getAnyInitializer(InitDecl);

Optional<ConstantEmitter> emitter;

// CUDA E.2.4.1 "__shared__ variables cannot have an initialization
// as part of their declaration."  Sema has already checked for
// error cases, so we just need to set Init to UndefValue.
bool IsCUDASharedVar =
    getLangOpts().CUDAIsDevice && D->hasAttr<CUDASharedAttr>();
// Shadows of initialized device-side global variables are also left
// undefined.
// Managed Variables should be initialized on both host side and device side.
bool IsCUDAShadowVar =
    !getLangOpts().CUDAIsDevice && !D->hasAttr<HIPManagedAttr>() &&
    (D->hasAttr<CUDAConstantAttr>() || D->hasAttr<CUDADeviceAttr>() ||
     D->hasAttr<CUDASharedAttr>());
bool IsCUDADeviceShadowVar =
    getLangOpts().CUDAIsDevice && !D->hasAttr<HIPManagedAttr>() &&
    (D->getType()->isCUDADeviceBuiltinSurfaceType() ||
     D->getType()->isCUDADeviceBuiltinTextureType());
if (getLangOpts().CUDA &&
    (IsCUDASharedVar || IsCUDAShadowVar || IsCUDADeviceShadowVar))
  Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
else if (D->hasAttr<LoaderUninitializedAttr>())
  Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(ASTTy));
else if (!InitExpr) {
  // This is a tentative definition; tentative definitions are
  // implicitly initialized with { 0 }.
  //
  // Note that tentative definitions are only emitted at the end of
  // a translation unit, so they should never have incomplete
  // type. In addition, EmitTentativeDefinition makes sure that we
  // never attempt to emit a tentative definition if a real one
  // exists. A use may still exists, however, so we still may need
  // to do a RAUW.
  assert(!ASTTy->isIncompleteType() && "Unexpected incomplete type")(static_cast <bool> (!ASTTy->isIncompleteType() &&
 "Unexpected incomplete type") ? void (0) : __assert_fail ("!ASTTy->isIncompleteType() && \"Unexpected incomplete type\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 4574, __extension__ __PRETTY_FUNCTION__
));
  Init = EmitNullConstant(D->getType());
} else {
  initializedGlobalDecl = GlobalDecl(D);
  emitter.emplace(*this);
  llvm::Constant *Initializer = emitter->tryEmitForInitializer(*InitDecl);
  if (!Initializer) {
    QualType T = InitExpr->getType();
    if (D->getType()->isReferenceType())
      T = D->getType();

    if (getLangOpts().CPlusPlus) {
      Init = EmitNullConstant(T);
      NeedsGlobalCtor = true;
    } else {
      ErrorUnsupported(D, "static initializer");
      Init = llvm::UndefValue::get(getTypes().ConvertType(T));
    }
  } else {
    Init = Initializer;
    // We don't need an initializer, so remove the entry for the delayed
    // initializer position (just in case this entry was delayed) if we
    // also don't need to register a destructor.
    if (getLangOpts().CPlusPlus && !NeedsGlobalDtor)
      DelayedCXXInitPosition.erase(D);
  }
}

llvm::Type* InitType = Init->getType();
llvm::Constant *Entry =
    GetAddrOfGlobalVar(D, InitType, ForDefinition_t(!IsTentative));

// Strip off pointer casts if we got them.
Entry = Entry->stripPointerCasts();

// Entry is now either a Function or GlobalVariable.
auto *GV = dyn_cast<llvm::GlobalVariable>(Entry);

// We have a definition after a declaration with the wrong type.
// We must make a new GlobalVariable* and update everything that used OldGV
// (a declaration or tentative definition) with the new GlobalVariable*
// (which will be a definition).
//
// This happens if there is a prototype for a global (e.g.
// "extern int x[];") and then a definition of a different type (e.g.
// "int x[10];"). This also happens when an initializer has a different type
// from the type of the global (this happens with unions).
if (!GV || GV->getValueType() != InitType ||
    GV->getType()->getAddressSpace() !=
        getContext().getTargetAddressSpace(GetGlobalVarAddressSpace(D))) {

  // Move the old entry aside so that we'll create a new one.
  Entry->setName(StringRef());

  // Make a new global with the correct type, this is now guaranteed to work.
  GV = cast<llvm::GlobalVariable>(
      GetAddrOfGlobalVar(D, InitType, ForDefinition_t(!IsTentative))
          ->stripPointerCasts());

  // Replace all uses of the old global with the new global
  llvm::Constant *NewPtrForOldDecl =
      llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV,
                                                           Entry->getType());
  Entry->replaceAllUsesWith(NewPtrForOldDecl);

  // Erase the old global, since it is no longer used.
  cast<llvm::GlobalValue>(Entry)->eraseFromParent();
}

MaybeHandleStaticInExternC(D, GV);

if (D->hasAttr<AnnotateAttr>())
  AddGlobalAnnotations(D, GV);

// Set the llvm linkage type as appropriate.
llvm::GlobalValue::LinkageTypes Linkage =
    getLLVMLinkageVarDefinition(D, GV->isConstant());

// CUDA B.2.1 "The __device__ qualifier declares a variable that resides on
// the device. [...]"
// CUDA B.2.2 "The __constant__ qualifier, optionally used together with
// __device__, declares a variable that: [...]
// Is accessible from all the threads within the grid and from the host
// through the runtime library (cudaGetSymbolAddress() / cudaGetSymbolSize()
// / cudaMemcpyToSymbol() / cudaMemcpyFromSymbol())."
if (GV && LangOpts.CUDA) {
  if (LangOpts.CUDAIsDevice) {
    if (Linkage != llvm::GlobalValue::InternalLinkage &&
        (D->hasAttr<CUDADeviceAttr>() || D->hasAttr<CUDAConstantAttr>() ||
         D->getType()->isCUDADeviceBuiltinSurfaceType() ||
         D->getType()->isCUDADeviceBuiltinTextureType()))
      GV->setExternallyInitialized(true);
  } else {
    getCUDARuntime().internalizeDeviceSideVar(D, Linkage);
  }
  getCUDARuntime().handleVarRegistration(D, *GV);
}

GV->setInitializer(Init);
if (emitter)
  emitter->finalize(GV);

// If it is safe to mark the global 'constant', do so now.
GV->setConstant(!NeedsGlobalCtor && !NeedsGlobalDtor &&
                isTypeConstant(D->getType(), true));

// If it is in a read-only section, mark it 'constant'.
if (const SectionAttr *SA = D->getAttr<SectionAttr>()) {
  const ASTContext::SectionInfo &SI = Context.SectionInfos[SA->getName()];
  if ((SI.SectionFlags & ASTContext::PSF_Write) == 0)
    GV->setConstant(true);
}

GV->setAlignment(getContext().getDeclAlign(D).getAsAlign());

// On Darwin, unlike other Itanium C++ ABI platforms, the thread-wrapper
// function is only defined alongside the variable, not also alongside
// callers. Normally, all accesses to a thread_local go through the
// thread-wrapper in order to ensure initialization has occurred, underlying
// variable will never be used other than the thread-wrapper, so it can be
// converted to internal linkage.
//
// However, if the variable has the 'constinit' attribute, it _can_ be
// referenced directly, without calling the thread-wrapper, so the linkage
// must not be changed.
//
// Additionally, if the variable isn't plain external linkage, e.g. if it's
// weak or linkonce, the de-duplication semantics are important to preserve,
// so we don't change the linkage.
if (D->getTLSKind() == VarDecl::TLS_Dynamic &&
    Linkage == llvm::GlobalValue::ExternalLinkage &&
    Context.getTargetInfo().getTriple().isOSDarwin() &&
    !D->hasAttr<ConstInitAttr>())
  Linkage = llvm::GlobalValue::InternalLinkage;

GV->setLinkage(Linkage);
if (D->hasAttr<DLLImportAttr>())
  GV->setDLLStorageClass(llvm::GlobalVariable::DLLImportStorageClass);
else if (D->hasAttr<DLLExportAttr>())
  GV->setDLLStorageClass(llvm::GlobalVariable::DLLExportStorageClass);
else
  GV->setDLLStorageClass(llvm::GlobalVariable::DefaultStorageClass);

if (Linkage == llvm::GlobalVariable::CommonLinkage) {
  // common vars aren't constant even if declared const.
  GV->setConstant(false);
  // Tentative definition of global variables may be initialized with
  // non-zero null pointers. In this case they should have weak linkage
  // since common linkage must have zero initializer and must not have
  // explicit section therefore cannot have non-zero initial value.
  if (!GV->getInitializer()->isNullValue())
    GV->setLinkage(llvm::GlobalVariable::WeakAnyLinkage);
}

setNonAliasAttributes(D, GV);

if (D->getTLSKind() && !GV->isThreadLocal()) {
  if (D->getTLSKind() == VarDecl::TLS_Dynamic)
    CXXThreadLocals.push_back(D);
  setTLSMode(GV, *D);
}

maybeSetTrivialComdat(*D, *GV);

// Emit the initializer function if necessary.
if (NeedsGlobalCtor || NeedsGlobalDtor)
  EmitCXXGlobalVarDeclInitFunc(D, GV, NeedsGlobalCtor);

SanitizerMD->reportGlobalToASan(GV, *D, NeedsGlobalCtor);

// Emit global variable debug information.
if (CGDebugInfo *DI = getModuleDebugInfo())
  if (getCodeGenOpts().hasReducedDebugInfo())
    DI->EmitGlobalVariable(GV, D);
4748}

4750void CodeGenModule::EmitExternalVarDeclaration(const VarDecl *D) {
if (CGDebugInfo *DI = getModuleDebugInfo())
  if (getCodeGenOpts().hasReducedDebugInfo()) {
    QualType ASTTy = D->getType();
    llvm::Type *Ty = getTypes().ConvertTypeForMem(D->getType());
    llvm::Constant *GV =
        GetOrCreateLLVMGlobal(D->getName(), Ty, ASTTy.getAddressSpace(), D);
    DI->EmitExternalVariable(
        cast<llvm::GlobalVariable>(GV->stripPointerCasts()), D);
  }
4760}

4762static bool isVarDeclStrongDefinition(const ASTContext &Context,
                                    CodeGenModule &CGM, const VarDecl *D,
                                    bool NoCommon) {
// Don't give variables common linkage if -fno-common was specified unless it
// was overridden by a NoCommon attribute.
if ((NoCommon || D->hasAttr<NoCommonAttr>()) && !D->hasAttr<CommonAttr>())
  return true;

// C11 6.9.2/2:
//   A declaration of an identifier for an object that has file scope without
//   an initializer, and without a storage-class specifier or with the
//   storage-class specifier static, constitutes a tentative definition.
if (D->getInit() || D->hasExternalStorage())
  return true;

// A variable cannot be both common and exist in a section.
if (D->hasAttr<SectionAttr>())
  return true;

// A variable cannot be both common and exist in a section.
// We don't try to determine which is the right section in the front-end.
// If no specialized section name is applicable, it will resort to default.
if (D->hasAttr<PragmaClangBSSSectionAttr>() ||
    D->hasAttr<PragmaClangDataSectionAttr>() ||
    D->hasAttr<PragmaClangRelroSectionAttr>() ||
    D->hasAttr<PragmaClangRodataSectionAttr>())
  return true;

// Thread local vars aren't considered common linkage.
if (D->getTLSKind())
  return true;

// Tentative definitions marked with WeakImportAttr are true definitions.
if (D->hasAttr<WeakImportAttr>())
  return true;

// A variable cannot be both common and exist in a comdat.
if (shouldBeInCOMDAT(CGM, *D))
  return true;

// Declarations with a required alignment do not have common linkage in MSVC
// mode.
if (Context.getTargetInfo().getCXXABI().isMicrosoft()) {
  if (D->hasAttr<AlignedAttr>())
    return true;
  QualType VarType = D->getType();
  if (Context.isAlignmentRequired(VarType))
    return true;

  if (const auto *RT = VarType->getAs<RecordType>()) {
    const RecordDecl *RD = RT->getDecl();
    for (const FieldDecl *FD : RD->fields()) {
      if (FD->isBitField())
        continue;
      if (FD->hasAttr<AlignedAttr>())
        return true;
      if (Context.isAlignmentRequired(FD->getType()))
        return true;
    }
  }
}

// Microsoft's link.exe doesn't support alignments greater than 32 bytes for
// common symbols, so symbols with greater alignment requirements cannot be
// common.
// Other COFF linkers (ld.bfd and LLD) support arbitrary power-of-two
// alignments for common symbols via the aligncomm directive, so this
// restriction only applies to MSVC environments.
if (Context.getTargetInfo().getTriple().isKnownWindowsMSVCEnvironment() &&
    Context.getTypeAlignIfKnown(D->getType()) >
        Context.toBits(CharUnits::fromQuantity(32)))
  return true;

return false;
4836}

4838llvm::GlobalValue::LinkageTypes CodeGenModule::getLLVMLinkageForDeclarator(
  const DeclaratorDecl *D, GVALinkage Linkage, bool IsConstantVariable) {
if (Linkage == GVA_Internal)
  return llvm::Function::InternalLinkage;

if (D->hasAttr<WeakAttr>()) {
  if (IsConstantVariable)
    return llvm::GlobalVariable::WeakODRLinkage;
  else
    return llvm::GlobalVariable::WeakAnyLinkage;
}

if (const auto *FD = D->getAsFunction())
  if (FD->isMultiVersion() && Linkage == GVA_AvailableExternally)
    return llvm::GlobalVariable::LinkOnceAnyLinkage;

// We are guaranteed to have a strong definition somewhere else,
// so we can use available_externally linkage.
if (Linkage == GVA_AvailableExternally)
  return llvm::GlobalValue::AvailableExternallyLinkage;

// Note that Apple's kernel linker doesn't support symbol
// coalescing, so we need to avoid linkonce and weak linkages there.
// Normally, this means we just map to internal, but for explicit
// instantiations we'll map to external.

// In C++, the compiler has to emit a definition in every translation unit
// that references the function.  We should use linkonce_odr because
// a) if all references in this translation unit are optimized away, we
// don't need to codegen it.  b) if the function persists, it needs to be
// merged with other definitions. c) C++ has the ODR, so we know the
// definition is dependable.
if (Linkage == GVA_DiscardableODR)
  return !Context.getLangOpts().AppleKext ? llvm::Function::LinkOnceODRLinkage
                                          : llvm::Function::InternalLinkage;

// An explicit instantiation of a template has weak linkage, since
// explicit instantiations can occur in multiple translation units
// and must all be equivalent. However, we are not allowed to
// throw away these explicit instantiations.
//
// CUDA/HIP: For -fno-gpu-rdc case, device code is limited to one TU,
// so say that CUDA templates are either external (for kernels) or internal.
// This lets llvm perform aggressive inter-procedural optimizations. For
// -fgpu-rdc case, device function calls across multiple TU's are allowed,
// therefore we need to follow the normal linkage paradigm.
if (Linkage == GVA_StrongODR) {
  if (getLangOpts().AppleKext)
    return llvm::Function::ExternalLinkage;
  if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice &&
      !getLangOpts().GPURelocatableDeviceCode)
    return D->hasAttr<CUDAGlobalAttr>() ? llvm::Function::ExternalLinkage
                                        : llvm::Function::InternalLinkage;
  return llvm::Function::WeakODRLinkage;
}

// C++ doesn't have tentative definitions and thus cannot have common
// linkage.
if (!getLangOpts().CPlusPlus && isa<VarDecl>(D) &&
    !isVarDeclStrongDefinition(Context, *this, cast<VarDecl>(D),
                               CodeGenOpts.NoCommon))
  return llvm::GlobalVariable::CommonLinkage;

// selectany symbols are externally visible, so use weak instead of
// linkonce.  MSVC optimizes away references to const selectany globals, so
// all definitions should be the same and ODR linkage should be used.
// http://msdn.microsoft.com/en-us/library/5tkz6s71.aspx
if (D->hasAttr<SelectAnyAttr>())
  return llvm::GlobalVariable::WeakODRLinkage;

// Otherwise, we have strong external linkage.
assert(Linkage == GVA_StrongExternal)(static_cast <bool> (Linkage == GVA_StrongExternal) ? void
 (0) : __assert_fail ("Linkage == GVA_StrongExternal", "clang/lib/CodeGen/CodeGenModule.cpp"
, 4909, __extension__ __PRETTY_FUNCTION__));
return llvm::GlobalVariable::ExternalLinkage;
4911}

4913llvm::GlobalValue::LinkageTypes CodeGenModule::getLLVMLinkageVarDefinition(
  const VarDecl *VD, bool IsConstant) {
GVALinkage Linkage = getContext().GetGVALinkageForVariable(VD);
return getLLVMLinkageForDeclarator(VD, Linkage, IsConstant);
4917}

4919/// Replace the uses of a function that was declared with a non-proto type.
4920/// We want to silently drop extra arguments from call sites
4921static void replaceUsesOfNonProtoConstant(llvm::Constant *old,
                                        llvm::Function *newFn) {
// Fast path.
if (old->use_empty()) return;

llvm::Type *newRetTy = newFn->getReturnType();
SmallVector<llvm::Value*, 4> newArgs;

for (llvm::Value::use_iterator ui = old->use_begin(), ue = old->use_end();
       ui != ue; ) {
  llvm::Value::use_iterator use = ui++; // Increment before the use is erased.
  llvm::User *user = use->getUser();

  // Recognize and replace uses of bitcasts.  Most calls to
  // unprototyped functions will use bitcasts.
  if (auto *bitcast = dyn_cast<llvm::ConstantExpr>(user)) {
    if (bitcast->getOpcode() == llvm::Instruction::BitCast)
      replaceUsesOfNonProtoConstant(bitcast, newFn);
    continue;
  }

  // Recognize calls to the function.
  llvm::CallBase *callSite = dyn_cast<llvm::CallBase>(user);
  if (!callSite) continue;
  if (!callSite->isCallee(&*use))
    continue;

  // If the return types don't match exactly, then we can't
  // transform this call unless it's dead.
  if (callSite->getType() != newRetTy && !callSite->use_empty())
    continue;

  // Get the call site's attribute list.
  SmallVector<llvm::AttributeSet, 8> newArgAttrs;
  llvm::AttributeList oldAttrs = callSite->getAttributes();

  // If the function was passed too few arguments, don't transform.
  unsigned newNumArgs = newFn->arg_size();
  if (callSite->arg_size() < newNumArgs)
    continue;

  // If extra arguments were passed, we silently drop them.
  // If any of the types mismatch, we don't transform.
  unsigned argNo = 0;
  bool dontTransform = false;
  for (llvm::Argument &A : newFn->args()) {
    if (callSite->getArgOperand(argNo)->getType() != A.getType()) {
      dontTransform = true;
      break;
    }

    // Add any parameter attributes.
    newArgAttrs.push_back(oldAttrs.getParamAttrs(argNo));
    argNo++;
  }
  if (dontTransform)
    continue;

  // Okay, we can transform this.  Create the new call instruction and copy
  // over the required information.
  newArgs.append(callSite->arg_begin(), callSite->arg_begin() + argNo);

  // Copy over any operand bundles.
  SmallVector<llvm::OperandBundleDef, 1> newBundles;
  callSite->getOperandBundlesAsDefs(newBundles);

  llvm::CallBase *newCall;
  if (isa<llvm::CallInst>(callSite)) {
    newCall =
        llvm::CallInst::Create(newFn, newArgs, newBundles, "", callSite);
  } else {
    auto *oldInvoke = cast<llvm::InvokeInst>(callSite);
    newCall = llvm::InvokeInst::Create(newFn, oldInvoke->getNormalDest(),
                                       oldInvoke->getUnwindDest(), newArgs,
                                       newBundles, "", callSite);
  }
  newArgs.clear(); // for the next iteration

  if (!newCall->getType()->isVoidTy())
    newCall->takeName(callSite);
  newCall->setAttributes(
      llvm::AttributeList::get(newFn->getContext(), oldAttrs.getFnAttrs(),
                               oldAttrs.getRetAttrs(), newArgAttrs));
  newCall->setCallingConv(callSite->getCallingConv());

  // Finally, remove the old call, replacing any uses with the new one.
  if (!callSite->use_empty())
    callSite->replaceAllUsesWith(newCall);

  // Copy debug location attached to CI.
  if (callSite->getDebugLoc())
    newCall->setDebugLoc(callSite->getDebugLoc());

  callSite->eraseFromParent();
}
5016}

5018/// ReplaceUsesOfNonProtoTypeWithRealFunction - This function is called when we
5019/// implement a function with no prototype, e.g. "int foo() {}".  If there are
5020/// existing call uses of the old function in the module, this adjusts them to
5021/// call the new function directly.
5022///
5023/// This is not just a cleanup: the always_inline pass requires direct calls to
5024/// functions to be able to inline them.  If there is a bitcast in the way, it
5025/// won't inline them.  Instcombine normally deletes these calls, but it isn't
5026/// run at -O0.
5027static void ReplaceUsesOfNonProtoTypeWithRealFunction(llvm::GlobalValue *Old,
                                                    llvm::Function *NewFn) {
// If we're redefining a global as a function, don't transform it.
if (!isa<llvm::Function>(Old)) return;

replaceUsesOfNonProtoConstant(Old, NewFn);
5033}

5035void CodeGenModule::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
auto DK = VD->isThisDeclarationADefinition();
if (DK == VarDecl::Definition && VD->hasAttr<DLLImportAttr>())
  return;

TemplateSpecializationKind TSK = VD->getTemplateSpecializationKind();
// If we have a definition, this might be a deferred decl. If the
// instantiation is explicit, make sure we emit it at the end.
if (VD->getDefinition() && TSK == TSK_ExplicitInstantiationDefinition)
  GetAddrOfGlobalVar(VD);

EmitTopLevelDecl(VD);
5047}

5049void CodeGenModule::EmitGlobalFunctionDefinition(GlobalDecl GD,
                                               llvm::GlobalValue *GV) {
const auto *D = cast<FunctionDecl>(GD.getDecl());

// Compute the function info and LLVM type.
const CGFunctionInfo &FI = getTypes().arrangeGlobalDeclaration(GD);
llvm::FunctionType *Ty = getTypes().GetFunctionType(FI);

// Get or create the prototype for the function.
if (!GV || (GV->getValueType() != Ty))
  GV = cast<llvm::GlobalValue>(GetAddrOfFunction(GD, Ty, /*ForVTable=*/false,
                                                 /*DontDefer=*/true,
                                                 ForDefinition));

// Already emitted.
if (!GV->isDeclaration())
  return;

// We need to set linkage and visibility on the function before
// generating code for it because various parts of IR generation
// want to propagate this information down (e.g. to local static
// declarations).
auto *Fn = cast<llvm::Function>(GV);
setFunctionLinkage(GD, Fn);

// FIXME: this is redundant with part of setFunctionDefinitionAttributes
setGVProperties(Fn, GD);

MaybeHandleStaticInExternC(D, Fn);

maybeSetTrivialComdat(*D, *Fn);

// Set CodeGen attributes that represent floating point environment.
setLLVMFunctionFEnvAttributes(D, Fn);

CodeGenFunction(*this).GenerateCode(GD, Fn, FI);

setNonAliasAttributes(GD, Fn);
SetLLVMFunctionAttributesForDefinition(D, Fn);

if (const ConstructorAttr *CA = D->getAttr<ConstructorAttr>())
  AddGlobalCtor(Fn, CA->getPriority());
if (const DestructorAttr *DA = D->getAttr<DestructorAttr>())
  AddGlobalDtor(Fn, DA->getPriority(), true);
if (D->hasAttr<AnnotateAttr>())
  AddGlobalAnnotations(D, Fn);
5095}

5097void CodeGenModule::EmitAliasDefinition(GlobalDecl GD) {
const auto *D = cast<ValueDecl>(GD.getDecl());
const AliasAttr *AA = D->getAttr<AliasAttr>();
assert(AA && "Not an alias?")(static_cast <bool> (AA && "Not an alias?") ? void
 (0) : __assert_fail ("AA && \"Not an alias?\"", "clang/lib/CodeGen/CodeGenModule.cpp"
, 5100, __extension__ __PRETTY_FUNCTION__));

StringRef MangledName = getMangledName(GD);

if (AA->getAliasee() == MangledName) {
  Diags.Report(AA->getLocation(), diag::err_cyclic_alias) << 0;
  return;
}

// If there is a definition in the module, then it wins over the alias.
// This is dubious, but allow it to be safe.  Just ignore the alias.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry && !Entry->isDeclaration())
  return;

Aliases.push_back(GD);

llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType());

// Create a reference to the named value.  This ensures that it is emitted
// if a deferred decl.
llvm::Constant *Aliasee;
llvm::GlobalValue::LinkageTypes LT;
if (isa<llvm::FunctionType>(DeclTy)) {
  Aliasee = GetOrCreateLLVMFunction(AA->getAliasee(), DeclTy, GD,
                                    /*ForVTable=*/false);
  LT = getFunctionLinkage(GD);
} else {
  Aliasee = GetOrCreateLLVMGlobal(AA->getAliasee(), DeclTy, LangAS::Default,
                                  /*D=*/nullptr);
  if (const auto *VD = dyn_cast<VarDecl>(GD.getDecl()))
    LT = getLLVMLinkageVarDefinition(VD, D->getType().isConstQualified());
  else
    LT = getFunctionLinkage(GD);
}

// Create the new alias itself, but don't set a name yet.
unsigned AS = Aliasee->getType()->getPointerAddressSpace();
auto *GA =
    llvm::GlobalAlias::create(DeclTy, AS, LT, "", Aliasee, &getModule());

if (Entry) {
  if (GA->getAliasee() == Entry) {
    Diags.Report(AA->getLocation(), diag::err_cyclic_alias) << 0;
    return;
  }

  assert(Entry->isDeclaration())(static_cast <bool> (Entry->isDeclaration()) ? void (
0) : __assert_fail ("Entry->isDeclaration()", "clang/lib/CodeGen/CodeGenModule.cpp"
, 5147, __extension__ __PRETTY_FUNCTION__));

  // If there is a declaration in the module, then we had an extern followed
  // by the alias, as in:
  //   extern int test6();
  //   ...
  //   int test6() __attribute__((alias("test7")));
  //
  // Remove it and replace uses of it with the alias.
  GA->takeName(Entry);

  Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GA,
                                                        Entry->getType()));
  Entry->eraseFromParent();
} else {
  GA->setName(MangledName);
}

// Set attributes which are particular to an alias; this is a
// specialization of the attributes which may be set on a global
// variable/function.
if (D->hasAttr<WeakAttr>() || D->hasAttr<WeakRefAttr>() ||
    D->isWeakImported()) {
  GA->setLinkage(llvm::Function::WeakAnyLinkage);
}

if (const auto *VD = dyn_cast<VarDecl>(D))
  if (VD->getTLSKind())
    setTLSMode(GA, *VD);

SetCommonAttributes(GD, GA);
5178}

5180void CodeGenModule::emitIFuncDefinition(GlobalDecl GD) {
const auto *D = cast<ValueDecl>(GD.getDecl());
const IFuncAttr *IFA = D->getAttr<IFuncAttr>();
assert(IFA && "Not an ifunc?")(static_cast <bool> (IFA && "Not an ifunc?") ? void
 (0) : __assert_fail ("IFA && \"Not an ifunc?\"", "clang/lib/CodeGen/CodeGenModule.cpp"
, 5183, __extension__ __PRETTY_FUNCTION__));

StringRef MangledName = getMangledName(GD);

if (IFA->getResolver() == MangledName) {
  Diags.Report(IFA->getLocation(), diag::err_cyclic_alias) << 1;
  return;
}

// Report an error if some definition overrides ifunc.
llvm::GlobalValue *Entry = GetGlobalValue(MangledName);
if (Entry && !Entry->isDeclaration()) {
  GlobalDecl OtherGD;
  if (lookupRepresentativeDecl(MangledName, OtherGD) &&
      DiagnosedConflictingDefinitions.insert(GD).second) {
    Diags.Report(D->getLocation(), diag::err_duplicate_mangled_name)
        << MangledName;
    Diags.Report(OtherGD.getDecl()->getLocation(),
                 diag::note_previous_definition);
  }
  return;
}

Aliases.push_back(GD);

llvm::Type *DeclTy = getTypes().ConvertTypeForMem(D->getType());
llvm::Type *ResolverTy = llvm::GlobalIFunc::getResolverFunctionType(DeclTy);
llvm::Constant *Resolver =
    GetOrCreateLLVMFunction(IFA->getResolver(), ResolverTy, {},
                            /*ForVTable=*/false);
llvm::GlobalIFunc *GIF =
    llvm::GlobalIFunc::create(DeclTy, 0, llvm::Function::ExternalLinkage,
                              "", Resolver, &getModule());
if (Entry) {
  if (GIF->getResolver() == Entry) {
    Diags.Report(IFA->getLocation(), diag::err_cyclic_alias) << 1;
    return;
  }
  assert(Entry->isDeclaration())(static_cast <bool> (Entry->isDeclaration()) ? void (
0) : __assert_fail ("Entry->isDeclaration()", "clang/lib/CodeGen/CodeGenModule.cpp"
, 5221, __extension__ __PRETTY_FUNCTION__));

  // If there is a declaration in the module, then we had an extern followed
  // by the ifunc, as in:
  //   extern int test();
  //   ...
  //   int test() __attribute__((ifunc("resolver")));
  //
  // Remove it and replace uses of it with the ifunc.
  GIF->takeName(Entry);

  Entry->replaceAllUsesWith(llvm::ConstantExpr::getBitCast(GIF,
                                                        Entry->getType()));
  Entry->eraseFromParent();
} else
  GIF->setName(MangledName);

SetCommonAttributes(GD, GIF);
5239}

5241llvm::Function *CodeGenModule::getIntrinsic(unsigned IID,
                                          ArrayRef<llvm::Type*> Tys) {
return llvm::Intrinsic::getDeclaration(&getModule(), (llvm::Intrinsic::ID)IID,
                                       Tys);
5245}

5247static llvm::StringMapEntry<llvm::GlobalVariable *> &
5248GetConstantCFStringEntry(llvm::StringMap<llvm::GlobalVariable *> &Map,
                       const StringLiteral *Literal, bool TargetIsLSB,
                       bool &IsUTF16, unsigned &StringLength) {
StringRef String = Literal->getString();
unsigned NumBytes = String.size();

// Check for simple case.
if (!Literal->containsNonAsciiOrNull()) {
  StringLength = NumBytes;
  return *Map.insert(std::make_pair(String, nullptr)).first;
}

// Otherwise, convert the UTF8 literals into a string of shorts.
IsUTF16 = true;

SmallVector<llvm::UTF16, 128> ToBuf(NumBytes + 1); // +1 for ending nulls.
const llvm::UTF8 *FromPtr = (const llvm::UTF8 *)String.data();
llvm::UTF16 *ToPtr = &ToBuf[0];

(void)llvm::ConvertUTF8toUTF16(&FromPtr, FromPtr + NumBytes, &ToPtr,
                               ToPtr + NumBytes, llvm::strictConversion);

// ConvertUTF8toUTF16 returns the length in ToPtr.
StringLength = ToPtr - &ToBuf[0];

// Add an explicit null.
*ToPtr = 0;
return *Map.insert(std::make_pair(
                       StringRef(reinterpret_cast<const char *>(ToBuf.data()),
                                 (StringLength + 1) * 2),
                       nullptr)).first;
5279}

5281ConstantAddress
5282CodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) {
unsigned StringLength = 0;
bool isUTF16 = false;
llvm::StringMapEntry<llvm::GlobalVariable *> &Entry =
    GetConstantCFStringEntry(CFConstantStringMap, Literal,
                             getDataLayout().isLittleEndian(), isUTF16,
                             StringLength);

if (auto *C = Entry.second)
  return ConstantAddress(
      C, C->getValueType(), CharUnits::fromQuantity(C->getAlignment()));

llvm::Constant *Zero = llvm::Constant::getNullValue(Int32Ty);
llvm::Constant *Zeros[] = { Zero, Zero };

const ASTContext &Context = getContext();
const llvm::Triple &Triple = getTriple();

const auto CFRuntime = getLangOpts().CFRuntime;
const bool IsSwiftABI =
    static_cast<unsigned>(CFRuntime) >=
    static_cast<unsigned>(LangOptions::CoreFoundationABI::Swift);
const bool IsSwift4_1 = CFRuntime == LangOptions::CoreFoundationABI::Swift4_1;

// If we don't already have it, get __CFConstantStringClassReference.
if (!CFConstantStringClassRef) {
  const char *CFConstantStringClassName = "__CFConstantStringClassReference";
  llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy);
  Ty = llvm::ArrayType::get(Ty, 0);

  switch (CFRuntime) {
  default: break;
  case LangOptions::CoreFoundationABI::Swift: LLVM_FALLTHROUGH[[gnu::fallthrough]];
  case LangOptions::CoreFoundationABI::Swift5_0:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "$s15SwiftFoundation19_NSCFConstantStringCN"
                            : "$s10Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  case LangOptions::CoreFoundationABI::Swift4_2:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "$S15SwiftFoundation19_NSCFConstantStringCN"
                            : "$S10Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  case LangOptions::CoreFoundationABI::Swift4_1:
    CFConstantStringClassName =
        Triple.isOSDarwin() ? "__T015SwiftFoundation19_NSCFConstantStringCN"
                            : "__T010Foundation19_NSCFConstantStringCN";
    Ty = IntPtrTy;
    break;
  }

  llvm::Constant *C = CreateRuntimeVariable(Ty, CFConstantStringClassName);

  if (Triple.isOSBinFormatELF() || Triple.isOSBinFormatCOFF()) {
    llvm::GlobalValue *GV = nullptr;

    if ((GV = dyn_cast<llvm::GlobalValue>(C))) {
      IdentifierInfo &II = Context.Idents.get(GV->getName());
      TranslationUnitDecl *TUDecl = Context.getTranslationUnitDecl();
      DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);

      const VarDecl *VD = nullptr;
      for (const auto *Result : DC->lookup(&II))
        if ((VD = dyn_cast<VarDecl>(Result)))
          break;

      if (Triple.isOSBinFormatELF()) {
        if (!VD)
          GV->setLinkage(llvm::GlobalValue::ExternalLinkage);
      } else {
        GV->setLinkage(llvm::GlobalValue::ExternalLinkage);
        if (!VD || !VD->hasAttr<DLLExportAttr>())
          GV->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
        else
          GV->setDLLStorageClass(llvm::GlobalValue::DLLExportStorageClass);
      }

      setDSOLocal(GV);
    }
  }

  // Decay array -> ptr
  CFConstantStringClassRef =
      IsSwiftABI ? llvm::ConstantExpr::getPtrToInt(C, Ty)
                 : llvm::ConstantExpr::getGetElementPtr(Ty, C, Zeros);
}

QualType CFTy = Context.getCFConstantStringType();

auto *STy = cast<llvm::StructType>(getTypes().ConvertType(CFTy));

ConstantInitBuilder Builder(*this);
auto Fields = Builder.beginStruct(STy);

// Class pointer.
Fields.add(cast<llvm::ConstantExpr>(CFConstantStringClassRef));

// Flags.
if (IsSwiftABI) {
  Fields.addInt(IntPtrTy, IsSwift4_1 ? 0x05 : 0x01);
  Fields.addInt(Int64Ty, isUTF16 ? 0x07d0 : 0x07c8);
} else {
  Fields.addInt(IntTy, isUTF16 ? 0x07d0 : 0x07C8);
}

// String pointer.
llvm::Constant *C = nullptr;
if (isUTF16) {
  auto Arr = llvm::makeArrayRef(
      reinterpret_cast<uint16_t *>(const_cast<char *>(Entry.first().data())),
      Entry.first().size() / 2);
  C = llvm::ConstantDataArray::get(VMContext, Arr);
} else {
  C = llvm::ConstantDataArray::getString(VMContext, Entry.first());
}

// Note: -fwritable-strings doesn't make the backing store strings of
// CFStrings writable. (See <rdar://problem/10657500>)
auto *GV =
    new llvm::GlobalVariable(getModule(), C->getType(), /*isConstant=*/true,
                             llvm::GlobalValue::PrivateLinkage, C, ".str");
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
// Don't enforce the target's minimum global alignment, since the only use
// of the string is via this class initializer.
CharUnits Align = isUTF16 ? Context.getTypeAlignInChars(Context.ShortTy)
                          : Context.getTypeAlignInChars(Context.CharTy);
GV->setAlignment(Align.getAsAlign());

// FIXME: We set the section explicitly to avoid a bug in ld64 224.1.
// Without it LLVM can merge the string with a non unnamed_addr one during
// LTO.  Doing that changes the section it ends in, which surprises ld64.
if (Triple.isOSBinFormatMachO())
  GV->setSection(isUTF16 ? "__TEXT,__ustring"
                         : "__TEXT,__cstring,cstring_literals");
// Make sure the literal ends up in .rodata to allow for safe ICF and for
// the static linker to adjust permissions to read-only later on.
else if (Triple.isOSBinFormatELF())
  GV->setSection(".rodata");

// String.
llvm::Constant *Str =
    llvm::ConstantExpr::getGetElementPtr(GV->getValueType(), GV, Zeros);

if (isUTF16)
  // Cast the UTF16 string to the correct type.
  Str = llvm::ConstantExpr::getBitCast(Str, Int8PtrTy);
Fields.add(Str);

// String length.
llvm::IntegerType *LengthTy =
    llvm::IntegerType::get(getModule().getContext(),
                           Context.getTargetInfo().getLongWidth());
if (IsSwiftABI) {
  if (CFRuntime == LangOptions::CoreFoundationABI::Swift4_1 ||
      CFRuntime == LangOptions::CoreFoundationABI::Swift4_2)
    LengthTy = Int32Ty;
  else
    LengthTy = IntPtrTy;
}
Fields.addInt(LengthTy, StringLength);

// Swift ABI requires 8-byte alignment to ensure that the _Atomic(uint64_t) is
// properly aligned on 32-bit platforms.
CharUnits Alignment =
    IsSwiftABI ? Context.toCharUnitsFromBits(64) : getPointerAlign();

// The struct.
GV = Fields.finishAndCreateGlobal("_unnamed_cfstring_", Alignment,
                                  /*isConstant=*/false,
                                  llvm::GlobalVariable::PrivateLinkage);
GV->addAttribute("objc_arc_inert");
switch (Triple.getObjectFormat()) {
case llvm::Triple::UnknownObjectFormat:
  llvm_unreachable("unknown file format")::llvm::llvm_unreachable_internal("unknown file format", "clang/lib/CodeGen/CodeGenModule.cpp"
, 5457);
case llvm::Triple::GOFF:
  llvm_unreachable("GOFF is not yet implemented")::llvm::llvm_unreachable_internal("GOFF is not yet implemented"
, "clang/lib/CodeGen/CodeGenModule.cpp", 5459);
case llvm::Triple::XCOFF:
  llvm_unreachable("XCOFF is not yet implemented")::llvm::llvm_unreachable_internal("XCOFF is not yet implemented"
, "clang/lib/CodeGen/CodeGenModule.cpp", 5461);
case llvm::Triple::COFF:
case llvm::Triple::ELF:
case llvm::Triple::Wasm:
  GV->setSection("cfstring");
  break;
case llvm::Triple::MachO:
  GV->setSection("__DATA,__cfstring");
  break;
}
Entry.second = GV;

return ConstantAddress(GV, GV->getValueType(), Alignment);
5474}

5476bool CodeGenModule::getExpressionLocationsEnabled() const {
return !CodeGenOpts.EmitCodeView || CodeGenOpts.DebugColumnInfo;
5478}

5480QualType CodeGenModule::getObjCFastEnumerationStateType() {
if (ObjCFastEnumerationStateType.isNull()) {
  RecordDecl *D = Context.buildImplicitRecord("__objcFastEnumerationState");
  D->startDefinition();

  QualType FieldTypes[] = {
    Context.UnsignedLongTy,
    Context.getPointerType(Context.getObjCIdType()),
    Context.getPointerType(Context.UnsignedLongTy),
    Context.getConstantArrayType(Context.UnsignedLongTy,
                         llvm::APInt(32, 5), nullptr, ArrayType::Normal, 0)
  };

  for (size_t i = 0; i < 4; ++i) {
    FieldDecl *Field = FieldDecl::Create(Context,
                                         D,
                                         SourceLocation(),
                                         SourceLocation(), nullptr,
                                         FieldTypes[i], /*TInfo=*/nullptr,
                                         /*BitWidth=*/nullptr,
                                         /*Mutable=*/false,
                                         ICIS_NoInit);
    Field->setAccess(AS_public);
    D->addDecl(Field);
  }

  D->completeDefinition();
  ObjCFastEnumerationStateType = Context.getTagDeclType(D);
}

return ObjCFastEnumerationStateType;
5511}

5513llvm::Constant *
5514CodeGenModule::GetConstantArrayFromStringLiteral(const StringLiteral *E) {
assert(!E->getType()->isPointerType() && "Strings are always arrays")(static_cast <bool> (!E->getType()->isPointerType
() && "Strings are always arrays") ? void (0) : __assert_fail
 ("!E->getType()->isPointerType() && \"Strings are always arrays\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 5515, __extension__ __PRETTY_FUNCTION__
));

// Don't emit it as the address of the string, emit the string data itself
// as an inline array.
if (E->getCharByteWidth() == 1) {
  SmallString<64> Str(E->getString());

  // Resize the string to the right size, which is indicated by its type.
  const ConstantArrayType *CAT = Context.getAsConstantArrayType(E->getType());
  Str.resize(CAT->getSize().getZExtValue());
  return llvm::ConstantDataArray::getString(VMContext, Str, false);
}

auto *AType = cast<llvm::ArrayType>(getTypes().ConvertType(E->getType()));
llvm::Type *ElemTy = AType->getElementType();
unsigned NumElements = AType->getNumElements();

// Wide strings have either 2-byte or 4-byte elements.
if (ElemTy->getPrimitiveSizeInBits() == 16) {
  SmallVector<uint16_t, 32> Elements;
  Elements.reserve(NumElements);

  for(unsigned i = 0, e = E->getLength(); i != e; ++i)
    Elements.push_back(E->getCodeUnit(i));
  Elements.resize(NumElements);
  return llvm::ConstantDataArray::get(VMContext, Elements);
}

assert(ElemTy->getPrimitiveSizeInBits() == 32)(static_cast <bool> (ElemTy->getPrimitiveSizeInBits(
) == 32) ? void (0) : __assert_fail ("ElemTy->getPrimitiveSizeInBits() == 32"
, "clang/lib/CodeGen/CodeGenModule.cpp", 5543, __extension__ __PRETTY_FUNCTION__
));
SmallVector<uint32_t, 32> Elements;
Elements.reserve(NumElements);

for(unsigned i = 0, e = E->getLength(); i != e; ++i)
  Elements.push_back(E->getCodeUnit(i));
Elements.resize(NumElements);
return llvm::ConstantDataArray::get(VMContext, Elements);
5551}

5553static llvm::GlobalVariable *
5554GenerateStringLiteral(llvm::Constant *C, llvm::GlobalValue::LinkageTypes LT,
                    CodeGenModule &CGM, StringRef GlobalName,
                    CharUnits Alignment) {
unsigned AddrSpace = CGM.getContext().getTargetAddressSpace(
    CGM.GetGlobalConstantAddressSpace());

llvm::Module &M = CGM.getModule();
// Create a global variable for this string
auto *GV = new llvm::GlobalVariable(
    M, C->getType(), !CGM.getLangOpts().WritableStrings, LT, C, GlobalName,
    nullptr, llvm::GlobalVariable::NotThreadLocal, AddrSpace);
GV->setAlignment(Alignment.getAsAlign());
GV->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global);
if (GV->isWeakForLinker()) {
  assert(CGM.supportsCOMDAT() && "Only COFF uses weak string literals")(static_cast <bool> (CGM.supportsCOMDAT() && "Only COFF uses weak string literals"
) ? void (0) : __assert_fail ("CGM.supportsCOMDAT() && \"Only COFF uses weak string literals\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 5568, __extension__ __PRETTY_FUNCTION__
));
  GV->setComdat(M.getOrInsertComdat(GV->getName()));
}
CGM.setDSOLocal(GV);

return GV;
5574}

5576/// GetAddrOfConstantStringFromLiteral - Return a pointer to a
5577/// constant array for the given string literal.
5578ConstantAddress
5579CodeGenModule::GetAddrOfConstantStringFromLiteral(const StringLiteral *S,
                                                StringRef Name) {
CharUnits Alignment = getContext().getAlignOfGlobalVarInChars(S->getType());

llvm::Constant *C = GetConstantArrayFromStringLiteral(S);
llvm::GlobalVariable **Entry = nullptr;
if (!LangOpts.WritableStrings) {
  Entry = &ConstantStringMap[C];
  if (auto GV = *Entry) {
    if (uint64_t(Alignment.getQuantity()) > GV->getAlignment())
      GV->setAlignment(Alignment.getAsAlign());
    return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                           GV->getValueType(), Alignment);
  }
}

SmallString<256> MangledNameBuffer;
StringRef GlobalVariableName;
llvm::GlobalValue::LinkageTypes LT;

// Mangle the string literal if that's how the ABI merges duplicate strings.
// Don't do it if they are writable, since we don't want writes in one TU to
// affect strings in another.
if (getCXXABI().getMangleContext().shouldMangleStringLiteral(S) &&
    !LangOpts.WritableStrings) {
  llvm::raw_svector_ostream Out(MangledNameBuffer);
  getCXXABI().getMangleContext().mangleStringLiteral(S, Out);
  LT = llvm::GlobalValue::LinkOnceODRLinkage;
  GlobalVariableName = MangledNameBuffer;
} else {
  LT = llvm::GlobalValue::PrivateLinkage;
  GlobalVariableName = Name;
}

auto GV = GenerateStringLiteral(C, LT, *this, GlobalVariableName, Alignment);
if (Entry)
  *Entry = GV;

SanitizerMD->reportGlobalToASan(GV, S->getStrTokenLoc(0), "<string literal>",
                                QualType());

return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                       GV->getValueType(), Alignment);
5622}

5624/// GetAddrOfConstantStringFromObjCEncode - Return a pointer to a constant
5625/// array for the given ObjCEncodeExpr node.
5626ConstantAddress
5627CodeGenModule::GetAddrOfConstantStringFromObjCEncode(const ObjCEncodeExpr *E) {
std::string Str;
getContext().getObjCEncodingForType(E->getEncodedType(), Str);

return GetAddrOfConstantCString(Str);
5632}

5634/// GetAddrOfConstantCString - Returns a pointer to a character array containing
5635/// the literal and a terminating '\0' character.
5636/// The result has pointer to array type.
5637ConstantAddress CodeGenModule::GetAddrOfConstantCString(
  const std::string &Str, const char *GlobalName) {
StringRef StrWithNull(Str.c_str(), Str.size() + 1);
CharUnits Alignment =
  getContext().getAlignOfGlobalVarInChars(getContext().CharTy);

llvm::Constant *C =
    llvm::ConstantDataArray::getString(getLLVMContext(), StrWithNull, false);

// Don't share any string literals if strings aren't constant.
llvm::GlobalVariable **Entry = nullptr;
if (!LangOpts.WritableStrings) {
  Entry = &ConstantStringMap[C];
  if (auto GV = *Entry) {
    if (uint64_t(Alignment.getQuantity()) > GV->getAlignment())
      GV->setAlignment(Alignment.getAsAlign());
    return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                           GV->getValueType(), Alignment);
  }
}

// Get the default prefix if a name wasn't specified.
if (!GlobalName)
  GlobalName = ".str";
// Create a global variable for this.
auto GV = GenerateStringLiteral(C, llvm::GlobalValue::PrivateLinkage, *this,
                                GlobalName, Alignment);
if (Entry)
  *Entry = GV;

return ConstantAddress(castStringLiteralToDefaultAddressSpace(*this, GV),
                       GV->getValueType(), Alignment);
5669}

5671ConstantAddress CodeGenModule::GetAddrOfGlobalTemporary(
  const MaterializeTemporaryExpr *E, const Expr *Init) {
assert((E->getStorageDuration() == SD_Static ||(static_cast <bool> ((E->getStorageDuration() == SD_Static
 || E->getStorageDuration() == SD_Thread) && "not a global temporary"
) ? void (0) : __assert_fail ("(E->getStorageDuration() == SD_Static || E->getStorageDuration() == SD_Thread) && \"not a global temporary\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 5674, __extension__ __PRETTY_FUNCTION__
))
        E->getStorageDuration() == SD_Thread) && "not a global temporary")(static_cast <bool> ((E->getStorageDuration() == SD_Static
 || E->getStorageDuration() == SD_Thread) && "not a global temporary"
) ? void (0) : __assert_fail ("(E->getStorageDuration() == SD_Static || E->getStorageDuration() == SD_Thread) && \"not a global temporary\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 5674, __extension__ __PRETTY_FUNCTION__
));
const auto *VD = cast<VarDecl>(E->getExtendingDecl());

// If we're not materializing a subobject of the temporary, keep the
// cv-qualifiers from the type of the MaterializeTemporaryExpr.
QualType MaterializedType = Init->getType();
if (Init == E->getSubExpr())
  MaterializedType = E->getType();

CharUnits Align = getContext().getTypeAlignInChars(MaterializedType);

auto InsertResult = MaterializedGlobalTemporaryMap.insert({E, nullptr});
if (!InsertResult.second) {
  // We've seen this before: either we already created it or we're in the
  // process of doing so.
  if (!InsertResult.first->second) {
    // We recursively re-entered this function, probably during emission of
    // the initializer. Create a placeholder. We'll clean this up in the
    // outer call, at the end of this function.
    llvm::Type *Type = getTypes().ConvertTypeForMem(MaterializedType);
    InsertResult.first->second = new llvm::GlobalVariable(
        getModule(), Type, false, llvm::GlobalVariable::InternalLinkage,
        nullptr);
  }
  return ConstantAddress(InsertResult.first->second,
                         llvm::cast<llvm::GlobalVariable>(
                             InsertResult.first->second->stripPointerCasts())
                             ->getValueType(),
                         Align);
}

// FIXME: If an externally-visible declaration extends multiple temporaries,
// we need to give each temporary the same name in every translation unit (and
// we also need to make the temporaries externally-visible).
SmallString<256> Name;
llvm::raw_svector_ostream Out(Name);
getCXXABI().getMangleContext().mangleReferenceTemporary(
    VD, E->getManglingNumber(), Out);

APValue *Value = nullptr;
if (E->getStorageDuration() == SD_Static && VD && VD->evaluateValue()) {
  // If the initializer of the extending declaration is a constant
  // initializer, we should have a cached constant initializer for this
  // temporary. Note that this might have a different value from the value
  // computed by evaluating the initializer if the surrounding constant
  // expression modifies the temporary.
  Value = E->getOrCreateValue(false);
}

// Try evaluating it now, it might have a constant initializer.
Expr::EvalResult EvalResult;
if (!Value && Init->EvaluateAsRValue(EvalResult, getContext()) &&
    !EvalResult.hasSideEffects())
  Value = &EvalResult.Val;

LangAS AddrSpace =
    VD ? GetGlobalVarAddressSpace(VD) : MaterializedType.getAddressSpace();

Optional<ConstantEmitter> emitter;
llvm::Constant *InitialValue = nullptr;
bool Constant = false;
llvm::Type *Type;
if (Value) {
  // The temporary has a constant initializer, use it.
  emitter.emplace(*this);
  InitialValue = emitter->emitForInitializer(*Value, AddrSpace,
                                             MaterializedType);
  Constant = isTypeConstant(MaterializedType, /*ExcludeCtor*/Value);
  Type = InitialValue->getType();
} else {
  // No initializer, the initialization will be provided when we
  // initialize the declaration which performed lifetime extension.
  Type = getTypes().ConvertTypeForMem(MaterializedType);
}

// Create a global variable for this lifetime-extended temporary.
llvm::GlobalValue::LinkageTypes Linkage =
    getLLVMLinkageVarDefinition(VD, Constant);
if (Linkage == llvm::GlobalVariable::ExternalLinkage) {
  const VarDecl *InitVD;
  if (VD->isStaticDataMember() && VD->getAnyInitializer(InitVD) &&
      isa<CXXRecordDecl>(InitVD->getLexicalDeclContext())) {
    // Temporaries defined inside a class get linkonce_odr linkage because the
    // class can be defined in multiple translation units.
    Linkage = llvm::GlobalVariable::LinkOnceODRLinkage;
  } else {
    // There is no need for this temporary to have external linkage if the
    // VarDecl has external linkage.
    Linkage = llvm::GlobalVariable::InternalLinkage;
  }
}
auto TargetAS = getContext().getTargetAddressSpace(AddrSpace);
auto *GV = new llvm::GlobalVariable(
    getModule(), Type, Constant, Linkage, InitialValue, Name.c_str(),
    /*InsertBefore=*/nullptr, llvm::GlobalVariable::NotThreadLocal, TargetAS);
if (emitter) emitter->finalize(GV);
setGVProperties(GV, VD);
if (GV->getDLLStorageClass() == llvm::GlobalVariable::DLLExportStorageClass)
  // The reference temporary should never be dllexport.
  GV->setDLLStorageClass(llvm::GlobalVariable::DefaultStorageClass);
GV->setAlignment(Align.getAsAlign());
if (supportsCOMDAT() && GV->isWeakForLinker())
  GV->setComdat(TheModule.getOrInsertComdat(GV->getName()));
if (VD->getTLSKind())
  setTLSMode(GV, *VD);
llvm::Constant *CV = GV;
if (AddrSpace != LangAS::Default)
  CV = getTargetCodeGenInfo().performAddrSpaceCast(
      *this, GV, AddrSpace, LangAS::Default,
      Type->getPointerTo(
          getContext().getTargetAddressSpace(LangAS::Default)));

// Update the map with the new temporary. If we created a placeholder above,
// replace it with the new global now.
llvm::Constant *&Entry = MaterializedGlobalTemporaryMap[E];
if (Entry) {
  Entry->replaceAllUsesWith(
      llvm::ConstantExpr::getBitCast(CV, Entry->getType()));
  llvm::cast<llvm::GlobalVariable>(Entry)->eraseFromParent();
}
Entry = CV;

return ConstantAddress(CV, Type, Align);
5797}

5799/// EmitObjCPropertyImplementations - Emit information for synthesized
5800/// properties for an implementation.
5801void CodeGenModule::EmitObjCPropertyImplementations(const
                                                  ObjCImplementationDecl *D) {
for (const auto *PID : D->property_impls()) {
  // Dynamic is just for type-checking.
  if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Synthesize) {
    ObjCPropertyDecl *PD = PID->getPropertyDecl();

    // Determine which methods need to be implemented, some may have
    // been overridden. Note that ::isPropertyAccessor is not the method
    // we want, that just indicates if the decl came from a
    // property. What we want to know is if the method is defined in
    // this implementation.
    auto *Getter = PID->getGetterMethodDecl();
    if (!Getter || Getter->isSynthesizedAccessorStub())
      CodeGenFunction(*this).GenerateObjCGetter(
          const_cast<ObjCImplementationDecl *>(D), PID);
    auto *Setter = PID->getSetterMethodDecl();
    if (!PD->isReadOnly() && (!Setter || Setter->isSynthesizedAccessorStub()))
      CodeGenFunction(*this).GenerateObjCSetter(
                               const_cast<ObjCImplementationDecl *>(D), PID);
  }
}
5823}

5825static bool needsDestructMethod(ObjCImplementationDecl *impl) {
const ObjCInterfaceDecl *iface = impl->getClassInterface();
for (const ObjCIvarDecl *ivar = iface->all_declared_ivar_begin();
     ivar; ivar = ivar->getNextIvar())
  if (ivar->getType().isDestructedType())
    return true;

return false;
5833}

5835static bool AllTrivialInitializers(CodeGenModule &CGM,
                                 ObjCImplementationDecl *D) {
CodeGenFunction CGF(CGM);
for (ObjCImplementationDecl::init_iterator B = D->init_begin(),
     E = D->init_end(); B != E; ++B) {
  CXXCtorInitializer *CtorInitExp = *B;
  Expr *Init = CtorInitExp->getInit();
  if (!CGF.isTrivialInitializer(Init))
    return false;
}
return true;
5846}

5848/// EmitObjCIvarInitializations - Emit information for ivar initialization
5849/// for an implementation.
5850void CodeGenModule::EmitObjCIvarInitializations(ObjCImplementationDecl *D) {
// We might need a .cxx_destruct even if we don't have any ivar initializers.
if (needsDestructMethod(D)) {
  IdentifierInfo *II = &getContext().Idents.get(".cxx_destruct");
  Selector cxxSelector = getContext().Selectors.getSelector(0, &II);
  ObjCMethodDecl *DTORMethod = ObjCMethodDecl::Create(
      getContext(), D->getLocation(), D->getLocation(), cxxSelector,
      getContext().VoidTy, nullptr, D,
      /*isInstance=*/true, /*isVariadic=*/false,
      /*isPropertyAccessor=*/true, /*isSynthesizedAccessorStub=*/false,
      /*isImplicitlyDeclared=*/true,
      /*isDefined=*/false, ObjCMethodDecl::Required);
  D->addInstanceMethod(DTORMethod);
  CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, DTORMethod, false);
  D->setHasDestructors(true);
}

// If the implementation doesn't have any ivar initializers, we don't need
// a .cxx_construct.
if (D->getNumIvarInitializers() == 0 ||
    AllTrivialInitializers(*this, D))
  return;

IdentifierInfo *II = &getContext().Idents.get(".cxx_construct");
Selector cxxSelector = getContext().Selectors.getSelector(0, &II);
// The constructor returns 'self'.
ObjCMethodDecl *CTORMethod = ObjCMethodDecl::Create(
    getContext(), D->getLocation(), D->getLocation(), cxxSelector,
    getContext().getObjCIdType(), nullptr, D, /*isInstance=*/true,
    /*isVariadic=*/false,
    /*isPropertyAccessor=*/true, /*isSynthesizedAccessorStub=*/false,
    /*isImplicitlyDeclared=*/true,
    /*isDefined=*/false, ObjCMethodDecl::Required);
D->addInstanceMethod(CTORMethod);
CodeGenFunction(*this).GenerateObjCCtorDtorMethod(D, CTORMethod, true);
D->setHasNonZeroConstructors(true);
5886}

5888// EmitLinkageSpec - Emit all declarations in a linkage spec.
5889void CodeGenModule::EmitLinkageSpec(const LinkageSpecDecl *LSD) {
if (LSD->getLanguage() != LinkageSpecDecl::lang_c &&
    LSD->getLanguage() != LinkageSpecDecl::lang_cxx) {
  ErrorUnsupported(LSD, "linkage spec");
  return;
}

EmitDeclContext(LSD);
5897}

5899void CodeGenModule::EmitDeclContext(const DeclContext *DC) {
for (auto *I : DC->decls()) {
  // Unlike other DeclContexts, the contents of an ObjCImplDecl at TU scope
  // are themselves considered "top-level", so EmitTopLevelDecl on an
  // ObjCImplDecl does not recursively visit them. We need to do that in
  // case they're nested inside another construct (LinkageSpecDecl /
  // ExportDecl) that does stop them from being considered "top-level".
  if (auto *OID = dyn_cast<ObjCImplDecl>(I)) {
    for (auto *M : OID->methods())
      EmitTopLevelDecl(M);
  }

  EmitTopLevelDecl(I);
}
5913}

5915/// EmitTopLevelDecl - Emit code for a single top level declaration.
5916void CodeGenModule::EmitTopLevelDecl(Decl *D) {
// Ignore dependent declarations.
if (D->isTemplated())
  return;

// Consteval function shouldn't be emitted.
if (auto *FD = dyn_cast<FunctionDecl>(D))
  if (FD->isConsteval())
    return;

switch (D->getKind()) {
case Decl::CXXConversion:
case Decl::CXXMethod:
case Decl::Function:
  EmitGlobal(cast<FunctionDecl>(D));
  // Always provide some coverage mapping
  // even for the functions that aren't emitted.
  AddDeferredUnusedCoverageMapping(D);
  break;

case Decl::CXXDeductionGuide:
  // Function-like, but does not result in code emission.
  break;

case Decl::Var:
case Decl::Decomposition:
case Decl::VarTemplateSpecialization:
  EmitGlobal(cast<VarDecl>(D));
  if (auto *DD = dyn_cast<DecompositionDecl>(D))
    for (auto *B : DD->bindings())
      if (auto *HD = B->getHoldingVar())
        EmitGlobal(HD);
  break;

// Indirect fields from global anonymous structs and unions can be
// ignored; only the actual variable requires IR gen support.
case Decl::IndirectField:
  break;

// C++ Decls
case Decl::Namespace:
  EmitDeclContext(cast<NamespaceDecl>(D));
  break;
case Decl::ClassTemplateSpecialization: {
  const auto *Spec = cast<ClassTemplateSpecializationDecl>(D);
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (Spec->getSpecializationKind() ==
            TSK_ExplicitInstantiationDefinition &&
        Spec->hasDefinition())
      DI->completeTemplateDefinition(*Spec);
} LLVM_FALLTHROUGH[[gnu::fallthrough]];
case Decl::CXXRecord: {
  CXXRecordDecl *CRD = cast<CXXRecordDecl>(D);
  if (CGDebugInfo *DI = getModuleDebugInfo()) {
    if (CRD->hasDefinition())
      DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
    if (auto *ES = D->getASTContext().getExternalSource())
      if (ES->hasExternalDefinitions(D) == ExternalASTSource::EK_Never)
        DI->completeUnusedClass(*CRD);
  }
  // Emit any static data members, they may be definitions.
  for (auto *I : CRD->decls())
    if (isa<VarDecl>(I) || isa<CXXRecordDecl>(I))
      EmitTopLevelDecl(I);
  break;
}
  // No code generation needed.
case Decl::UsingShadow:
case Decl::ClassTemplate:
case Decl::VarTemplate:
case Decl::Concept:
case Decl::VarTemplatePartialSpecialization:
case Decl::FunctionTemplate:
case Decl::TypeAliasTemplate:
case Decl::Block:
case Decl::Empty:
case Decl::Binding:
  break;
case Decl::Using:          // using X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitUsingDecl(cast<UsingDecl>(*D));
  break;
case Decl::UsingEnum: // using enum X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitUsingEnumDecl(cast<UsingEnumDecl>(*D));
  break;
case Decl::NamespaceAlias:
  if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitNamespaceAlias(cast<NamespaceAliasDecl>(*D));
  break;
case Decl::UsingDirective: // using namespace X; [C++]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitUsingDirective(cast<UsingDirectiveDecl>(*D));
  break;
case Decl::CXXConstructor:
  getCXXABI().EmitCXXConstructors(cast<CXXConstructorDecl>(D));
  break;
case Decl::CXXDestructor:
  getCXXABI().EmitCXXDestructors(cast<CXXDestructorDecl>(D));
  break;

case Decl::StaticAssert:
  // Nothing to do.
  break;

// Objective-C Decls

// Forward declarations, no (immediate) code generation.
case Decl::ObjCInterface:
case Decl::ObjCCategory:
  break;

case Decl::ObjCProtocol: {
  auto *Proto = cast<ObjCProtocolDecl>(D);
  if (Proto->isThisDeclarationADefinition())
    ObjCRuntime->GenerateProtocol(Proto);
  break;
}

case Decl::ObjCCategoryImpl:
  // Categories have properties but don't support synthesize so we
  // can ignore them here.
  ObjCRuntime->GenerateCategory(cast<ObjCCategoryImplDecl>(D));
  break;

case Decl::ObjCImplementation: {
  auto *OMD = cast<ObjCImplementationDecl>(D);
  EmitObjCPropertyImplementations(OMD);
  EmitObjCIvarInitializations(OMD);
  ObjCRuntime->GenerateClass(OMD);
  // Emit global variable debug information.
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (getCodeGenOpts().hasReducedDebugInfo())
      DI->getOrCreateInterfaceType(getContext().getObjCInterfaceType(
          OMD->getClassInterface()), OMD->getLocation());
  break;
}
case Decl::ObjCMethod: {
  auto *OMD = cast<ObjCMethodDecl>(D);
  // If this is not a prototype, emit the body.
  if (OMD->getBody())
    CodeGenFunction(*this).GenerateObjCMethod(OMD);
  break;
}
case Decl::ObjCCompatibleAlias:
  ObjCRuntime->RegisterAlias(cast<ObjCCompatibleAliasDecl>(D));
  break;

case Decl::PragmaComment: {
  const auto *PCD = cast<PragmaCommentDecl>(D);
  switch (PCD->getCommentKind()) {
  case PCK_Unknown:
    llvm_unreachable("unexpected pragma comment kind")::llvm::llvm_unreachable_internal("unexpected pragma comment kind"
, "clang/lib/CodeGen/CodeGenModule.cpp", 6068);
  case PCK_Linker:
    AppendLinkerOptions(PCD->getArg());
    break;
  case PCK_Lib:
      AddDependentLib(PCD->getArg());
    break;
  case PCK_Compiler:
  case PCK_ExeStr:
  case PCK_User:
    break; // We ignore all of these.
  }
  break;
}

case Decl::PragmaDetectMismatch: {
  const auto *PDMD = cast<PragmaDetectMismatchDecl>(D);
  AddDetectMismatch(PDMD->getName(), PDMD->getValue());
  break;
}

case Decl::LinkageSpec:
  EmitLinkageSpec(cast<LinkageSpecDecl>(D));
  break;

case Decl::FileScopeAsm: {
  // File-scope asm is ignored during device-side CUDA compilation.
  if (LangOpts.CUDA && LangOpts.CUDAIsDevice)
    break;
  // File-scope asm is ignored during device-side OpenMP compilation.
  if (LangOpts.OpenMPIsDevice)
    break;
  // File-scope asm is ignored during device-side SYCL compilation.
  if (LangOpts.SYCLIsDevice)
    break;
  auto *AD = cast<FileScopeAsmDecl>(D);
  getModule().appendModuleInlineAsm(AD->getAsmString()->getString());
  break;
}

case Decl::Import: {
  auto *Import = cast<ImportDecl>(D);

  // If we've already imported this module, we're done.
  if (!ImportedModules.insert(Import->getImportedModule()))
    break;

  // Emit debug information for direct imports.
  if (!Import->getImportedOwningModule()) {
    if (CGDebugInfo *DI = getModuleDebugInfo())
      DI->EmitImportDecl(*Import);
  }

  // Find all of the submodules and emit the module initializers.
  llvm::SmallPtrSet<clang::Module *, 16> Visited;
  SmallVector<clang::Module *, 16> Stack;
  Visited.insert(Import->getImportedModule());
  Stack.push_back(Import->getImportedModule());

  while (!Stack.empty()) {
    clang::Module *Mod = Stack.pop_back_val();
    if (!EmittedModuleInitializers.insert(Mod).second)
      continue;

    for (auto *D : Context.getModuleInitializers(Mod))
      EmitTopLevelDecl(D);

    // Visit the submodules of this module.
    for (clang::Module::submodule_iterator Sub = Mod->submodule_begin(),
                                           SubEnd = Mod->submodule_end();
         Sub != SubEnd; ++Sub) {
      // Skip explicit children; they need to be explicitly imported to emit
      // the initializers.
      if ((*Sub)->IsExplicit)
        continue;

      if (Visited.insert(*Sub).second)
        Stack.push_back(*Sub);
    }
  }
  break;
}

case Decl::Export:
  EmitDeclContext(cast<ExportDecl>(D));
  break;

case Decl::OMPThreadPrivate:
  EmitOMPThreadPrivateDecl(cast<OMPThreadPrivateDecl>(D));
  break;

case Decl::OMPAllocate:
  EmitOMPAllocateDecl(cast<OMPAllocateDecl>(D));
  break;

case Decl::OMPDeclareReduction:
  EmitOMPDeclareReduction(cast<OMPDeclareReductionDecl>(D));
  break;

case Decl::OMPDeclareMapper:
  EmitOMPDeclareMapper(cast<OMPDeclareMapperDecl>(D));
  break;

case Decl::OMPRequires:
  EmitOMPRequiresDecl(cast<OMPRequiresDecl>(D));
  break;

case Decl::Typedef:
case Decl::TypeAlias: // using foo = bar; [C++11]
  if (CGDebugInfo *DI = getModuleDebugInfo())
    DI->EmitAndRetainType(
        getContext().getTypedefType(cast<TypedefNameDecl>(D)));
  break;

case Decl::Record:
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (cast<RecordDecl>(D)->getDefinition())
      DI->EmitAndRetainType(getContext().getRecordType(cast<RecordDecl>(D)));
  break;

case Decl::Enum:
  if (CGDebugInfo *DI = getModuleDebugInfo())
    if (cast<EnumDecl>(D)->getDefinition())
      DI->EmitAndRetainType(getContext().getEnumType(cast<EnumDecl>(D)));
  break;

default:
  // Make sure we handled everything we should, every other kind is a
  // non-top-level decl.  FIXME: Would be nice to have an isTopLevelDeclKind
  // function. Need to recode Decl::Kind to do that easily.
  assert(isa<TypeDecl>(D) && "Unsupported decl kind")(static_cast <bool> (isa<TypeDecl>(D) && "Unsupported decl kind"
) ? void (0) : __assert_fail ("isa<TypeDecl>(D) && \"Unsupported decl kind\""
, "clang/lib/CodeGen/CodeGenModule.cpp", 6198, __extension__ __PRETTY_FUNCTION__
));
  break;
}
6201}

6203void CodeGenModule::AddDeferredUnusedCoverageMapping(Decl *D) {
// Do we need to generate coverage mapping?
if (!CodeGenOpts.CoverageMapping)
  return;
switch (D->getKind()) {
case Decl::CXXConversion:
case Decl::CXXMethod:
case Decl::Function:
case Decl::ObjCMethod:
case Decl::CXXConstructor:
case Decl::CXXDestructor: {
  if (!cast<FunctionDecl>(D)->doesThisDeclarationHaveABody())
    break;
  SourceManager &SM = getContext().getSourceManager();
  if (LimitedCoverage && SM.getMainFileID() != SM.getFileID(D->getBeginLoc()))
    break;
  auto I = DeferredEmptyCoverageMappingDecls.find(D);
  if (I == DeferredEmptyCoverageMappingDecls.end())
    DeferredEmptyCoverageMappingDecls[D] = true;
  break;
}
default:
  break;
};
6227}

6229void CodeGenModule::ClearUnusedCoverageMapping(const Decl *D) {
// Do we need to generate coverage mapping?
if (!CodeGenOpts.CoverageMapping)
  return;
if (const auto *Fn = dyn_cast<FunctionDecl>(D)) {
  if (Fn->isTemplateInstantiation())
    ClearUnusedCoverageMapping(Fn->getTemplateInstantiationPattern());
}
auto I = DeferredEmptyCoverageMappingDecls.find(D);
if (I == DeferredEmptyCoverageMappingDecls.end())
  DeferredEmptyCoverageMappingDecls[D] = false;
else
  I->second = false;
6242}

6244void CodeGenModule::EmitDeferredUnusedCoverageMappings() {
// We call takeVector() here to avoid use-after-free.
// FIXME: DeferredEmptyCoverageMappingDecls is getting mutated because
// we deserialize function bodies to emit coverage info for them, and that
// deserializes more declarations. How should we handle that case?
for (const auto &Entry : DeferredEmptyCoverageMappingDecls.takeVector()) {
  if (!Entry.second)
    continue;
  const Decl *D = Entry.first;
  switch (D->getKind()) {
  case Decl::CXXConversion:
  case Decl::CXXMethod:
  case Decl::Function:
  case Decl::ObjCMethod: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<FunctionDecl>(D));
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  case Decl::CXXConstructor: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<CXXConstructorDecl>(D), Ctor_Base);
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  case Decl::CXXDestructor: {
    CodeGenPGO PGO(*this);
    GlobalDecl GD(cast<CXXDestructorDecl>(D), Dtor_Base);
    PGO.emitEmptyCounterMapping(D, getMangledName(GD),
                                getFunctionLinkage(GD));
    break;
  }
  default:
    break;
  };
}
6282}

6284void CodeGenModule::EmitMainVoidAlias() {
// In order to transition away from "__original_main" gracefully, emit an
// alias for "main" in the no-argument case so that libc can detect when
// new-style no-argument main is in used.
if (llvm::Function *F = getModule().getFunction("main")) {
  if (!F->isDeclaration() && F->arg_size() == 0 && !F->isVarArg() &&
      F->getReturnType()->isIntegerTy(Context.getTargetInfo().getIntWidth()))
    addUsedGlobal(llvm::GlobalAlias::create("__main_void", F));
}
6293}

6295/// Turns the given pointer into a constant.
6296static llvm::Constant *GetPointerConstant(llvm::LLVMContext &Context,
                                        const void *Ptr) {
uintptr_t PtrInt = reinterpret_cast<uintptr_t>(Ptr);
llvm::Type *i64 = llvm::Type::getInt64Ty(Context);
return llvm::ConstantInt::get(i64, PtrInt);
6301}

6303static void EmitGlobalDeclMetadata(CodeGenModule &CGM,
                                 llvm::NamedMDNode *&GlobalMetadata,
                                 GlobalDecl D,
                                 llvm::GlobalValue *Addr) {
if (!GlobalMetadata)
  GlobalMetadata =
    CGM.getModule().getOrInsertNamedMetadata("clang.global.decl.ptrs");

// TODO: should we report variant information for ctors/dtors?
llvm::Metadata *Ops[] = {llvm::ConstantAsMetadata::get(Addr),
                         llvm::ConstantAsMetadata::get(GetPointerConstant(
                             CGM.getLLVMContext(), D.getDecl()))};
GlobalMetadata->addOperand(llvm::MDNode::get(CGM.getLLVMContext(), Ops));
6316}

6318/// For each function which is declared within an extern "C" region and marked
6319/// as 'used', but has internal linkage, create an alias from the unmangled
6320/// name to the mangled name if possible. People expect to be able to refer
6321/// to such functions with an unmangled name from inline assembly within the
6322/// same translation unit.
6323void CodeGenModule::EmitStaticExternCAliases() {
if (!getTargetCodeGenInfo().shouldEmitStaticExternCAliases())
  return;
for (auto &I : StaticExternCValues) {
  IdentifierInfo *Name = I.first;
  llvm::GlobalValue *Val = I.second;
  if (Val && !getModule().getNamedValue(Name->getName()))
    addCompilerUsedGlobal(llvm::GlobalAlias::create(Name->getName(), Val));
}
6332}

6334bool CodeGenModule::lookupRepresentativeDecl(StringRef MangledName,
                                           GlobalDecl &Result) const {
auto Res = Manglings.find(MangledName);
if (Res == Manglings.end())
  return false;
Result = Res->getValue();
return true;
6341}

6343/// Emits metadata nodes associating all the global values in the
6344/// current module with the Decls they came from.  This is useful for
6345/// projects using IR gen as a subroutine.
6346///
6347/// Since there's currently no way to associate an MDNode directly
6348/// with an llvm::GlobalValue, we create a global named metadata
6349/// with the name 'clang.global.decl.ptrs'.
6350void CodeGenModule::EmitDeclMetadata() {
llvm::NamedMDNode *GlobalMetadata = nullptr;

for (auto &I : MangledDeclNames) {
  llvm::GlobalValue *Addr = getModule().getNamedValue(I.second);
  // Some mangled names don't necessarily have an associated GlobalValue
  // in this module, e.g. if we mangled it for DebugInfo.
  if (Addr)
    EmitGlobalDeclMetadata(*this, GlobalMetadata, I.first, Addr);
}
6360}

6362/// Emits metadata nodes for all the local variables in the current
6363/// function.
6364void CodeGenFunction::EmitDeclMetadata() {
if (LocalDeclMap.empty()) return;

llvm::LLVMContext &Context = getLLVMContext();

// Find the unique metadata ID for this name.
unsigned DeclPtrKind = Context.getMDKindID("clang.decl.ptr");

llvm::NamedMDNode *GlobalMetadata = nullptr;

for (auto &I : LocalDeclMap) {
  const Decl *D = I.first;
  llvm::Value *Addr = I.second.getPointer();
  if (auto *Alloca = dyn_cast<llvm::AllocaInst>(Addr)) {
    llvm::Value *DAddr = GetPointerConstant(getLLVMContext(), D);
    Alloca->setMetadata(
        DeclPtrKind, llvm::MDNode::get(
                         Context, llvm::ValueAsMetadata::getConstant(DAddr)));
  } else if (auto *GV = dyn_cast<llvm::GlobalValue>(Addr)) {
    GlobalDecl GD = GlobalDecl(cast<VarDecl>(D));
    EmitGlobalDeclMetadata(CGM, GlobalMetadata, GD, GV);
  }
}
6387}

6389void CodeGenModule::EmitVersionIdentMetadata() {
llvm::NamedMDNode *IdentMetadata =
  TheModule.getOrInsertNamedMetadata("llvm.ident");
std::string Version = getClangFullVersion();
llvm::LLVMContext &Ctx = TheModule.getContext();

llvm::Metadata *IdentNode[] = {llvm::MDString::get(Ctx, Version)};
IdentMetadata->addOperand(llvm::MDNode::get(Ctx, IdentNode));
6397}

6399void CodeGenModule::EmitCommandLineMetadata() {
llvm::NamedMDNode *CommandLineMetadata =
  TheModule.getOrInsertNamedMetadata("llvm.commandline");
std::string CommandLine = getCodeGenOpts().RecordCommandLine;
llvm::LLVMContext &Ctx = TheModule.getContext();

llvm::Metadata *CommandLineNode[] = {llvm::MDString::get(Ctx, CommandLine)};
CommandLineMetadata->addOperand(llvm::MDNode::get(Ctx, CommandLineNode));
6407}

6409void CodeGenModule::EmitCoverageFile() {
if (getCodeGenOpts().CoverageDataFile.empty() &&
    getCodeGenOpts().CoverageNotesFile.empty())
  return;

llvm::NamedMDNode *CUNode = TheModule.getNamedMetadata("llvm.dbg.cu");
if (!CUNode)
  return;

llvm::NamedMDNode *GCov = TheModule.getOrInsertNamedMetadata("llvm.gcov");
llvm::LLVMContext &Ctx = TheModule.getContext();
auto *CoverageDataFile =
    llvm::MDString::get(Ctx, getCodeGenOpts().CoverageDataFile);
auto *CoverageNotesFile =
    llvm::MDString::get(Ctx, getCodeGenOpts().CoverageNotesFile);
for (int i = 0, e = CUNode->getNumOperands(); i != e; ++i) {
  llvm::MDNode *CU = CUNode->getOperand(i);
  llvm::Metadata *Elts[] = {CoverageNotesFile, CoverageDataFile, CU};
  GCov->addOperand(llvm::MDNode::get(Ctx, Elts));
}
6429}

6431llvm::Constant *CodeGenModule::GetAddrOfRTTIDescriptor(QualType Ty,
                                                     bool ForEH) {
// Return a bogus pointer if RTTI is disabled, unless it's for EH.
// FIXME: should we even be calling this method if RTTI is disabled
// and it's not for EH?
if ((!ForEH && !getLangOpts().RTTI) || getLangOpts().CUDAIsDevice ||
    (getLangOpts().OpenMP && getLangOpts().OpenMPIsDevice &&
     getTriple().isNVPTX()))
  return llvm::Constant::getNullValue(Int8PtrTy);

if (ForEH && Ty->isObjCObjectPointerType() &&
    LangOpts.ObjCRuntime.isGNUFamily())
  return ObjCRuntime->GetEHType(Ty);

return getCXXABI().getAddrOfRTTIDescriptor(Ty);
6446}

6448void CodeGenModule::EmitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D) {
// Do not emit threadprivates in simd-only mode.
if (LangOpts.OpenMP && LangOpts.OpenMPSimd)
  return;
for (auto RefExpr : D->varlists()) {
  auto *VD = cast<VarDecl>(cast<DeclRefExpr>(RefExpr)->getDecl());
  bool PerformInit =
      VD->getAnyInitializer() &&
      !VD->getAnyInitializer()->isConstantInitializer(getContext(),
                                                      /*ForRef=*/false);

  Address Addr = Address::deprecated(GetAddrOfGlobalVar(VD),
                                     getContext().getDeclAlign(VD));
  if (auto InitFunction = getOpenMPRuntime().emitThreadPrivateVarDefinition(
          VD, Addr, RefExpr->getBeginLoc(), PerformInit))
    CXXGlobalInits.push_back(InitFunction);
}
6465}

6467llvm::Metadata *
6468CodeGenModule::CreateMetadataIdentifierImpl(QualType T, MetadataTypeMap &Map,
                                          StringRef Suffix) {
if (auto *FnType = T->getAs<FunctionProtoType>())
  T = getContext().getFunctionType(
      FnType->getReturnType(), FnType->getParamTypes(),
      FnType->getExtProtoInfo().withExceptionSpec(EST_None));

llvm::Metadata *&InternalId = Map[T.getCanonicalType()];
if (InternalId)
  return InternalId;

if (isExternallyVisible(T->getLinkage())) {
  std::string OutName;
  llvm::raw_string_ostream Out(OutName);
  getCXXABI().getMangleContext().mangleTypeName(T, Out);
  Out << Suffix;

  InternalId = llvm::MDString::get(getLLVMContext(), Out.str());
} else {
  InternalId = llvm::MDNode::getDistinct(getLLVMContext(),
                                         llvm::ArrayRef<llvm::Metadata *>());
}

return InternalId;
6492}

6494llvm::Metadata *CodeGenModule::CreateMetadataIdentifierForType(QualType T) {
return CreateMetadataIdentifierImpl(T, MetadataIdMap, "");
6496}

6498llvm::Metadata *
6499CodeGenModule::CreateMetadataIdentifierForVirtualMemPtrType(QualType T) {
return CreateMetadataIdentifierImpl(T, VirtualMetadataIdMap, ".virtual");
6501}

6503// Generalize pointer types to a void pointer with the qualifiers of the
6504// originally pointed-to type, e.g. 'const char *' and 'char * const *'
6505// generalize to 'const void *' while 'char *' and 'const char **' generalize to
6506// 'void *'.
6507static QualType GeneralizeType(ASTContext &Ctx, QualType Ty) {
if (!Ty->isPointerType())
  return Ty;

return Ctx.getPointerType(
    QualType(Ctx.VoidTy).withCVRQualifiers(
        Ty->getPointeeType().getCVRQualifiers()));
6514}

6516// Apply type generalization to a FunctionType's return and argument types
6517static QualType GeneralizeFunctionType(ASTContext &Ctx, QualType Ty) {
if (auto *FnType = Ty->getAs<FunctionProtoType>()) {
  SmallVector<QualType, 8> GeneralizedParams;
  for (auto &Param : FnType->param_types())
    GeneralizedParams.push_back(GeneralizeType(Ctx, Param));

  return Ctx.getFunctionType(
      GeneralizeType(Ctx, FnType->getReturnType()),
      GeneralizedParams, FnType->getExtProtoInfo());
}

if (auto *FnType = Ty->getAs<FunctionNoProtoType>())
  return Ctx.getFunctionNoProtoType(
      GeneralizeType(Ctx, FnType->getReturnType()));

llvm_unreachable("Encountered unknown FunctionType")::llvm::llvm_unreachable_internal("Encountered unknown FunctionType"
, "clang/lib/CodeGen/CodeGenModule.cpp", 6532);
6533}

6535llvm::Metadata *CodeGenModule::CreateMetadataIdentifierGeneralized(QualType T) {
return CreateMetadataIdentifierImpl(GeneralizeFunctionType(getContext(), T),
                                    GeneralizedMetadataIdMap, ".generalized");
6538}

6540/// Returns whether this module needs the "all-vtables" type identifier.
6541bool CodeGenModule::NeedAllVtablesTypeId() const {
// Returns true if at least one of vtable-based CFI checkers is enabled and
// is not in the trapping mode.
return ((LangOpts.Sanitize.has(SanitizerKind::CFIVCall) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIVCall)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFINVCall) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFINVCall)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFIDerivedCast) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIDerivedCast)) ||
        (LangOpts.Sanitize.has(SanitizerKind::CFIUnrelatedCast) &&
         !CodeGenOpts.SanitizeTrap.has(SanitizerKind::CFIUnrelatedCast)));
6552}

6554void CodeGenModule::AddVTableTypeMetadata(llvm::GlobalVariable *VTable,
                                        CharUnits Offset,
                                        const CXXRecordDecl *RD) {
llvm::Metadata *MD =
    CreateMetadataIdentifierForType(QualType(RD->getTypeForDecl(), 0));
VTable->addTypeMetadata(Offset.getQuantity(), MD);

if (CodeGenOpts.SanitizeCfiCrossDso)
  if (auto CrossDsoTypeId = CreateCrossDsoCfiTypeId(MD))
    VTable->addTypeMetadata(Offset.getQuantity(),
                            llvm::ConstantAsMetadata::get(CrossDsoTypeId));

if (NeedAllVtablesTypeId()) {
  llvm::Metadata *MD = llvm::MDString::get(getLLVMContext(), "all-vtables");
  VTable->addTypeMetadata(Offset.getQuantity(), MD);
}
6570}

6572llvm::SanitizerStatReport &CodeGenModule::getSanStats() {
if (!SanStats)
  SanStats = std::make_unique<llvm::SanitizerStatReport>(&getModule());

return *SanStats;
6577}

6579llvm::Value *
6580CodeGenModule::createOpenCLIntToSamplerConversion(const Expr *E,
                                                CodeGenFunction &CGF) {
llvm::Constant *C = ConstantEmitter(CGF).emitAbstract(E, E->getType());
auto *SamplerT = getOpenCLRuntime().getSamplerType(E->getType().getTypePtr());
auto *FTy = llvm::FunctionType::get(SamplerT, {C->getType()}, false);
auto *Call = CGF.EmitRuntimeCall(
    CreateRuntimeFunction(FTy, "__translate_sampler_initializer"), {C});
return Call;
6588}

6590CharUnits CodeGenModule::getNaturalPointeeTypeAlignment(
  QualType T, LValueBaseInfo *BaseInfo, TBAAAccessInfo *TBAAInfo) {
return getNaturalTypeAlignment(T->getPointeeType(), BaseInfo, TBAAInfo,
                               /* forPointeeType= */ true);
6594}

6596CharUnits CodeGenModule::getNaturalTypeAlignment(QualType T,
                                               LValueBaseInfo *BaseInfo,
                                               TBAAAccessInfo *TBAAInfo,
                                               bool forPointeeType) {
if (TBAAInfo)
  *TBAAInfo = getTBAAAccessInfo(T);

// FIXME: This duplicates logic in ASTContext::getTypeAlignIfKnown. But
// that doesn't return the information we need to compute BaseInfo.

// Honor alignment typedef attributes even on incomplete types.
// We also honor them straight for C++ class types, even as pointees;
// there's an expressivity gap here.
if (auto TT = T->getAs<TypedefType>()) {
  if (auto Align = TT->getDecl()->getMaxAlignment()) {
    if (BaseInfo)
      *BaseInfo = LValueBaseInfo(AlignmentSource::AttributedType);
    return getContext().toCharUnitsFromBits(Align);
  }
}

bool AlignForArray = T->isArrayType();

// Analyze the base element type, so we don't get confused by incomplete
// array types.
T = getContext().getBaseElementType(T);

if (T->isIncompleteType()) {
  // We could try to replicate the logic from
  // ASTContext::getTypeAlignIfKnown, but nothing uses the alignment if the
  // type is incomplete, so it's impossible to test. We could try to reuse
  // getTypeAlignIfKnown, but that doesn't return the information we need
  // to set BaseInfo.  So just ignore the possibility that the alignment is
  // greater than one.
  if (BaseInfo)
    *BaseInfo = LValueBaseInfo(AlignmentSource::Type);
  return CharUnits::One();
}

if (BaseInfo)
  *BaseInfo = LValueBaseInfo(AlignmentSource::Type);

CharUnits Alignment;
const CXXRecordDecl *RD;
if (T.getQualifiers().hasUnaligned()) {
  Alignment = CharUnits::One();
} else if (forPointeeType && !AlignForArray &&
           (RD = T->getAsCXXRecordDecl())) {
  // For C++ class pointees, we don't know whether we're pointing at a
  // base or a complete object, so we generally need to use the
  // non-virtual alignment.
  Alignment = getClassPointerAlignment(RD);
} else {
  Alignment = getContext().getTypeAlignInChars(T);
}

// Cap to the global maximum type alignment unless the alignment
// was somehow explicit on the type.
if (unsigned MaxAlign = getLangOpts().MaxTypeAlign) {
  if (Alignment.getQuantity() > MaxAlign &&
      !getContext().isAlignmentRequired(T))
    Alignment = CharUnits::fromQuantity(MaxAlign);
}
return Alignment;
6660}

6662bool CodeGenModule::stopAutoInit() {
unsigned StopAfter = getContext().getLangOpts().TrivialAutoVarInitStopAfter;
if (StopAfter) {
  // This number is positive only when -ftrivial-auto-var-init-stop-after=* is
  // used
  if (NumAutoVarInit >= StopAfter) {
    return true;
  }
  if (!NumAutoVarInit) {
    unsigned DiagID = getDiags().getCustomDiagID(
        DiagnosticsEngine::Warning,
        "-ftrivial-auto-var-init-stop-after=%0 has been enabled to limit the "
        "number of times ftrivial-auto-var-init=%1 gets applied.");
    getDiags().Report(DiagID)
        << StopAfter
        << (getContext().getLangOpts().getTrivialAutoVarInit() ==
                    LangOptions::TrivialAutoVarInitKind::Zero
                ? "zero"
                : "pattern");
  }
  ++NumAutoVarInit;
}
return false;
6685}

6687void CodeGenModule::printPostfixForExternalizedStaticVar(
  llvm::raw_ostream &OS) const {
OS << "__static__" << getContext().getCUIDHash();
6690}

←

/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/llvm/include/llvm/ADT/DenseMap.h

→

1//===- llvm/ADT/DenseMap.h - Dense probed hash table ------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// This file defines the DenseMap class.
11///
12//===----------------------------------------------------------------------===//

14#ifndef LLVM_ADT_DENSEMAP_H
15#define LLVM_ADT_DENSEMAP_H

17#include "llvm/ADT/DenseMapInfo.h"
18#include "llvm/ADT/EpochTracker.h"
19#include "llvm/Support/AlignOf.h"
20#include "llvm/Support/Compiler.h"
21#include "llvm/Support/MathExtras.h"
22#include "llvm/Support/MemAlloc.h"
23#include "llvm/Support/ReverseIteration.h"
24#include "llvm/Support/type_traits.h"
25#include <algorithm>
26#include <cassert>
27#include <cstddef>
28#include <cstring>
29#include <initializer_list>
30#include <iterator>
31#include <new>
32#include <type_traits>
33#include <utility>

35namespace llvm {

37namespace detail {

39// We extend a pair to allow users to override the bucket type with their own
40// implementation without requiring two members.
41template <typename KeyT, typename ValueT>
42struct DenseMapPair : public std::pair<KeyT, ValueT> {
using std::pair<KeyT, ValueT>::pair;

KeyT &getFirst() { return std::pair<KeyT, ValueT>::first; }
const KeyT &getFirst() const { return std::pair<KeyT, ValueT>::first; }
ValueT &getSecond() { return std::pair<KeyT, ValueT>::second; }
const ValueT &getSecond() const { return std::pair<KeyT, ValueT>::second; }
49};

51} // end namespace detail

53template <typename KeyT, typename ValueT,
        typename KeyInfoT = DenseMapInfo<KeyT>,
        typename Bucket = llvm::detail::DenseMapPair<KeyT, ValueT>,
        bool IsConst = false>
57class DenseMapIterator;

59template <typename DerivedT, typename KeyT, typename ValueT, typename KeyInfoT,
        typename BucketT>
61class DenseMapBase : public DebugEpochBase {
template <typename T>
using const_arg_type_t = typename const_pointer_or_const_ref<T>::type;

65public:
using size_type = unsigned;
using key_type = KeyT;
using mapped_type = ValueT;
using value_type = BucketT;

using iterator = DenseMapIterator<KeyT, ValueT, KeyInfoT, BucketT>;
using const_iterator =
    DenseMapIterator<KeyT, ValueT, KeyInfoT, BucketT, true>;

inline iterator begin() {
  // When the map is empty, avoid the overhead of advancing/retreating past
  // empty buckets.
  if (empty())
    return end();
  if (shouldReverseIterate<KeyT>())
    return makeIterator(getBucketsEnd() - 1, getBuckets(), *this);
  return makeIterator(getBuckets(), getBucketsEnd(), *this);
}
inline iterator end() {
  return makeIterator(getBucketsEnd(), getBucketsEnd(), *this, true);
}
inline const_iterator begin() const {
  if (empty())
    return end();
  if (shouldReverseIterate<KeyT>())
    return makeConstIterator(getBucketsEnd() - 1, getBuckets(), *this);
  return makeConstIterator(getBuckets(), getBucketsEnd(), *this);
}
inline const_iterator end() const {
  return makeConstIterator(getBucketsEnd(), getBucketsEnd(), *this, true);
}

LLVM_NODISCARD[[clang::warn_unused_result]] bool empty() const {
  return getNumEntries() == 0;
}
unsigned size() const { return getNumEntries(); }

/// Grow the densemap so that it can contain at least \p NumEntries items
/// before resizing again.
void reserve(size_type NumEntries) {
  auto NumBuckets = getMinBucketToReserveForEntries(NumEntries);
  incrementEpoch();
  if (NumBuckets > getNumBuckets())
    grow(NumBuckets);
}

void clear() {
  incrementEpoch();
  if (getNumEntries() == 0 && getNumTombstones() == 0) return;

  // If the capacity of the array is huge, and the # elements used is small,
  // shrink the array.
  if (getNumEntries() * 4 < getNumBuckets() && getNumBuckets() > 64) {
    shrink_and_clear();
    return;
  }

  const KeyT EmptyKey = getEmptyKey(), TombstoneKey = getTombstoneKey();
  if (std::is_trivially_destructible<ValueT>::value) {
    // Use a simpler loop when values don't need destruction.
    for (BucketT *P = getBuckets(), *E = getBucketsEnd(); P != E; ++P)
      P->getFirst() = EmptyKey;
  } else {
    unsigned NumEntries = getNumEntries();
    for (BucketT *P = getBuckets(), *E = getBucketsEnd(); P != E; ++P) {
      if (!KeyInfoT::isEqual(P->getFirst(), EmptyKey)) {
        if (!KeyInfoT::isEqual(P->getFirst(), TombstoneKey)) {
          P->getSecond().~ValueT();
          --NumEntries;
        }
        P->getFirst() = EmptyKey;
      }
    }
    assert(NumEntries == 0 && "Node count imbalance!")(static_cast <bool> (NumEntries == 0 && "Node count imbalance!"
) ? void (0) : __assert_fail ("NumEntries == 0 && \"Node count imbalance!\""
, "llvm/include/llvm/ADT/DenseMap.h", 139, __extension__ __PRETTY_FUNCTION__
));
  }
  setNumEntries(0);
  setNumTombstones(0);
}

/// Return 1 if the specified key is in the map, 0 otherwise.
size_type count(const_arg_type_t<KeyT> Val) const {
  const BucketT *TheBucket;
  return LookupBucketFor(Val, TheBucket) ? 1 : 0;
}

iterator find(const_arg_type_t<KeyT> Val) {
  BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return makeIterator(TheBucket,
                        shouldReverseIterate<KeyT>() ? getBuckets()
                                                     : getBucketsEnd(),
                        *this, true);
  return end();
}
const_iterator find(const_arg_type_t<KeyT> Val) const {
  const BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return makeConstIterator(TheBucket,
                             shouldReverseIterate<KeyT>() ? getBuckets()
                                                          : getBucketsEnd(),
                             *this, true);
  return end();
}

/// Alternate version of find() which allows a different, and possibly
/// less expensive, key type.
/// The DenseMapInfo is responsible for supplying methods
/// getHashValue(LookupKeyT) and isEqual(LookupKeyT, KeyT) for each key
/// type used.
template<class LookupKeyT>
iterator find_as(const LookupKeyT &Val) {
  BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return makeIterator(TheBucket,
                        shouldReverseIterate<KeyT>() ? getBuckets()
                                                     : getBucketsEnd(),
                        *this, true);
  return end();
}
template<class LookupKeyT>
const_iterator find_as(const LookupKeyT &Val) const {
  const BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return makeConstIterator(TheBucket,
                             shouldReverseIterate<KeyT>() ? getBuckets()
                                                          : getBucketsEnd(),
                             *this, true);
  return end();
}

/// lookup - Return the entry for the specified key, or a default
/// constructed value if no such entry exists.
ValueT lookup(const_arg_type_t<KeyT> Val) const {
  const BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return TheBucket->getSecond();
  return ValueT();
}

// Inserts key,value pair into the map if the key isn't already in the map.
// If the key is already in the map, it returns false and doesn't update the
// value.
std::pair<iterator, bool> insert(const std::pair<KeyT, ValueT> &KV) {
  return try_emplace(KV.first, KV.second);
}

// Inserts key,value pair into the map if the key isn't already in the map.
// If the key is already in the map, it returns false and doesn't update the
// value.
std::pair<iterator, bool> insert(std::pair<KeyT, ValueT> &&KV) {
  return try_emplace(std::move(KV.first), std::move(KV.second));
}

// Inserts key,value pair into the map if the key isn't already in the map.
// The value is constructed in-place if the key is not in the map, otherwise
// it is not moved.
template <typename... Ts>
std::pair<iterator, bool> try_emplace(KeyT &&Key, Ts &&... Args) {
  BucketT *TheBucket;
  if (LookupBucketFor(Key, TheBucket))
    return std::make_pair(makeIterator(TheBucket,
                                       shouldReverseIterate<KeyT>()
                                           ? getBuckets()
                                           : getBucketsEnd(),
                                       *this, true),
                          false); // Already in map.

  // Otherwise, insert the new element.
  TheBucket =
      InsertIntoBucket(TheBucket, std::move(Key), std::forward<Ts>(Args)...);
  return std::make_pair(makeIterator(TheBucket,
                                     shouldReverseIterate<KeyT>()
                                         ? getBuckets()
                                         : getBucketsEnd(),
                                     *this, true),
                        true);
}

// Inserts key,value pair into the map if the key isn't already in the map.
// The value is constructed in-place if the key is not in the map, otherwise
// it is not moved.
template <typename... Ts>
std::pair<iterator, bool> try_emplace(const KeyT &Key, Ts &&... Args) {
  BucketT *TheBucket;
  if (LookupBucketFor(Key, TheBucket))
    return std::make_pair(makeIterator(TheBucket,
                                       shouldReverseIterate<KeyT>()
                                           ? getBuckets()
                                           : getBucketsEnd(),
                                       *this, true),
                          false); // Already in map.

  // Otherwise, insert the new element.
  TheBucket = InsertIntoBucket(TheBucket, Key, std::forward<Ts>(Args)...);
  return std::make_pair(makeIterator(TheBucket,
                                     shouldReverseIterate<KeyT>()
                                         ? getBuckets()
                                         : getBucketsEnd(),
                                     *this, true),
                        true);
}

/// Alternate version of insert() which allows a different, and possibly
/// less expensive, key type.
/// The DenseMapInfo is responsible for supplying methods
/// getHashValue(LookupKeyT) and isEqual(LookupKeyT, KeyT) for each key
/// type used.
template <typename LookupKeyT>
std::pair<iterator, bool> insert_as(std::pair<KeyT, ValueT> &&KV,
                                    const LookupKeyT &Val) {
  BucketT *TheBucket;
  if (LookupBucketFor(Val, TheBucket))
    return std::make_pair(makeIterator(TheBucket,
                                       shouldReverseIterate<KeyT>()
                                           ? getBuckets()
                                           : getBucketsEnd(),
                                       *this, true),
                          false); // Already in map.

  // Otherwise, insert the new element.
  TheBucket = InsertIntoBucketWithLookup(TheBucket, std::move(KV.first),
                                         std::move(KV.second), Val);
  return std::make_pair(makeIterator(TheBucket,
                                     shouldReverseIterate<KeyT>()
                                         ? getBuckets()
                                         : getBucketsEnd(),
                                     *this, true),
                        true);
}

/// insert - Range insertion of pairs.
template<typename InputIt>
void insert(InputIt I, InputIt E) {
  for (; I != E; ++I)
    insert(*I);
}

bool erase(const KeyT &Val) {
  BucketT *TheBucket;
  if (!LookupBucketFor(Val, TheBucket))
    return false; // not in map.

  TheBucket->getSecond().~ValueT();
  TheBucket->getFirst() = getTombstoneKey();
  decrementNumEntries();
  incrementNumTombstones();
  return true;
}
void erase(iterator I) {
  BucketT *TheBucket = &*I;
  TheBucket->getSecond().~ValueT();
  TheBucket->getFirst() = getTombstoneKey();
  decrementNumEntries();
  incrementNumTombstones();
}

value_type& FindAndConstruct(const KeyT &Key) {
  BucketT *TheBucket;
  if (LookupBucketFor(Key, TheBucket))
    return *TheBucket;

  return *InsertIntoBucket(TheBucket, Key);
}

ValueT &operator[](const KeyT &Key) {
  return FindAndConstruct(Key).second;
}

value_type& FindAndConstruct(KeyT &&Key) {
  BucketT *TheBucket;
  if (LookupBucketFor(Key, TheBucket))
    return *TheBucket;

  return *InsertIntoBucket(TheBucket, std::move(Key));
}

ValueT &operator[](KeyT &&Key) {
  return FindAndConstruct(std::move(Key)).second;
}

/// isPointerIntoBucketsArray - Return true if the specified pointer points
/// somewhere into the DenseMap's array of buckets (i.e. either to a key or
/// value in the DenseMap).
bool isPointerIntoBucketsArray(const void *Ptr) const {
  return Ptr >= getBuckets() && Ptr < getBucketsEnd();
}

/// getPointerIntoBucketsArray() - Return an opaque pointer into the buckets
/// array.  In conjunction with the previous method, this can be used to
/// determine whether an insertion caused the DenseMap to reallocate.
const void *getPointerIntoBucketsArray() const { return getBuckets(); }

358protected:
DenseMapBase() = default;

void destroyAll() {
  if (getNumBuckets() == 0) // Nothing to do.
    return;

  const KeyT EmptyKey = getEmptyKey(), TombstoneKey = getTombstoneKey();
  for (BucketT *P = getBuckets(), *E = getBucketsEnd(); P != E; ++P) {
    if (!KeyInfoT::isEqual(P->getFirst(), EmptyKey) &&
        !KeyInfoT::isEqual(P->getFirst(), TombstoneKey))
      P->getSecond().~ValueT();
    P->getFirst().~KeyT();
  }
}

void initEmpty() {
  setNumEntries(0);
  setNumTombstones(0);

  assert((getNumBuckets() & (getNumBuckets()-1)) == 0 &&(static_cast <bool> ((getNumBuckets() & (getNumBuckets
()-1)) == 0 && "# initial buckets must be a power of two!"
) ? void (0) : __assert_fail ("(getNumBuckets() & (getNumBuckets()-1)) == 0 && \"# initial buckets must be a power of two!\""
, "llvm/include/llvm/ADT/DenseMap.h", 379, __extension__ __PRETTY_FUNCTION__
))
         "# initial buckets must be a power of two!")(static_cast <bool> ((getNumBuckets() & (getNumBuckets
()-1)) == 0 && "# initial buckets must be a power of two!"
) ? void (0) : __assert_fail ("(getNumBuckets() & (getNumBuckets()-1)) == 0 && \"# initial buckets must be a power of two!\""
, "llvm/include/llvm/ADT/DenseMap.h", 379, __extension__ __PRETTY_FUNCTION__
));
  const KeyT EmptyKey = getEmptyKey();
  for (BucketT *B = getBuckets(), *E = getBucketsEnd(); B != E; ++B)
    ::new (&B->getFirst()) KeyT(EmptyKey);
}

/// Returns the number of buckets to allocate to ensure that the DenseMap can
/// accommodate \p NumEntries without need to grow().
unsigned getMinBucketToReserveForEntries(unsigned NumEntries) {
  // Ensure that "NumEntries * 4 < NumBuckets * 3"
  if (NumEntries == 0)
    return 0;
  // +1 is required because of the strict equality.
  // For example if NumEntries is 48, we need to return 401.
  return NextPowerOf2(NumEntries * 4 / 3 + 1);
}

void moveFromOldBuckets(BucketT *OldBucketsBegin, BucketT *OldBucketsEnd) {
  initEmpty();

  // Insert all the old elements.
  const KeyT EmptyKey = getEmptyKey();
  const KeyT TombstoneKey = getTombstoneKey();
  for (BucketT *B = OldBucketsBegin, *E = OldBucketsEnd; B != E; ++B) {
    if (!KeyInfoT::isEqual(B->getFirst(), EmptyKey) &&
        !KeyInfoT::isEqual(B->getFirst(), TombstoneKey)) {
      // Insert the key/value into the new table.
      BucketT *DestBucket;
      bool FoundVal = LookupBucketFor(B->getFirst(), DestBucket);
      (void)FoundVal; // silence warning.
      assert(!FoundVal && "Key already in new map?")(static_cast <bool> (!FoundVal && "Key already in new map?"
) ? void (0) : __assert_fail ("!FoundVal && \"Key already in new map?\""
, "llvm/include/llvm/ADT/DenseMap.h", 409, __extension__ __PRETTY_FUNCTION__
));
      DestBucket->getFirst() = std::move(B->getFirst());
      ::new (&DestBucket->getSecond()) ValueT(std::move(B->getSecond()));
      incrementNumEntries();

      // Free the value.
      B->getSecond().~ValueT();
    }
    B->getFirst().~KeyT();
  }
}

template <typename OtherBaseT>
void copyFrom(
    const DenseMapBase<OtherBaseT, KeyT, ValueT, KeyInfoT, BucketT> &other) {
  assert(&other != this)(static_cast <bool> (&other != this) ? void (0) : __assert_fail
 ("&other != this", "llvm/include/llvm/ADT/DenseMap.h", 424
, __extension__ __PRETTY_FUNCTION__));
  assert(getNumBuckets() == other.getNumBuckets())(static_cast <bool> (getNumBuckets() == other.getNumBuckets
()) ? void (0) : __assert_fail ("getNumBuckets() == other.getNumBuckets()"
, "llvm/include/llvm/ADT/DenseMap.h", 425, __extension__ __PRETTY_FUNCTION__
));

  setNumEntries(other.getNumEntries());
  setNumTombstones(other.getNumTombstones());

  if (std::is_trivially_copyable<KeyT>::value &&
      std::is_trivially_copyable<ValueT>::value)
    memcpy(reinterpret_cast<void *>(getBuckets()), other.getBuckets(),
           getNumBuckets() * sizeof(BucketT));
  else
    for (size_t i = 0; i < getNumBuckets(); ++i) {
      ::new (&getBuckets()[i].getFirst())
          KeyT(other.getBuckets()[i].getFirst());
      if (!KeyInfoT::isEqual(getBuckets()[i].getFirst(), getEmptyKey()) &&
          !KeyInfoT::isEqual(getBuckets()[i].getFirst(), getTombstoneKey()))
        ::new (&getBuckets()[i].getSecond())
            ValueT(other.getBuckets()[i].getSecond());
    }
}

static unsigned getHashValue(const KeyT &Val) {
  return KeyInfoT::getHashValue(Val);
}

template<typename LookupKeyT>
static unsigned getHashValue(const LookupKeyT &Val) {
  return KeyInfoT::getHashValue(Val);
}

static const KeyT getEmptyKey() {
  static_assert(std::is_base_of<DenseMapBase, DerivedT>::value,
                "Must pass the derived type to this template!");
  return KeyInfoT::getEmptyKey();
}

static const KeyT getTombstoneKey() {
  return KeyInfoT::getTombstoneKey();
}

464private:
iterator makeIterator(BucketT *P, BucketT *E,
                      DebugEpochBase &Epoch,
                      bool NoAdvance=false) {
  if (shouldReverseIterate<KeyT>()) {
    BucketT *B = P == getBucketsEnd() ? getBuckets() : P + 1;
    return iterator(B, E, Epoch, NoAdvance);
  }
  return iterator(P, E, Epoch, NoAdvance);
}

const_iterator makeConstIterator(const BucketT *P, const BucketT *E,
                                 const DebugEpochBase &Epoch,
                                 const bool NoAdvance=false) const {
  if (shouldReverseIterate<KeyT>()) {
    const BucketT *B = P == getBucketsEnd() ? getBuckets() : P + 1;
    return const_iterator(B, E, Epoch, NoAdvance);
  }
  return const_iterator(P, E, Epoch, NoAdvance);
}

unsigned getNumEntries() const {
  return static_cast<const DerivedT *>(this)->getNumEntries();
}

void setNumEntries(unsigned Num) {
  static_cast<DerivedT *>(this)->setNumEntries(Num);
}

void incrementNumEntries() {
  setNumEntries(getNumEntries() + 1);
}

void decrementNumEntries() {
  setNumEntries(getNumEntries() - 1);
}

unsigned getNumTombstones() const {
  return static_cast<const DerivedT *>(this)->getNumTombstones();
}

void setNumTombstones(unsigned Num) {
  static_cast<DerivedT *>(this)->setNumTombstones(Num);
}

void incrementNumTombstones() {
  setNumTombstones(getNumTombstones() + 1);
}

void decrementNumTombstones() {
  setNumTombstones(getNumTombstones() - 1);
}

const BucketT *getBuckets() const {
  return static_cast<const DerivedT *>(this)->getBuckets();
}

BucketT *getBuckets() {
  return static_cast<DerivedT *>(this)->getBuckets();
}

unsigned getNumBuckets() const {
  return static_cast<const DerivedT *>(this)->getNumBuckets();
}

BucketT *getBucketsEnd() {
  return getBuckets() + getNumBuckets();
}

const BucketT *getBucketsEnd() const {
  return getBuckets() + getNumBuckets();
}

void grow(unsigned AtLeast) {
  static_cast<DerivedT *>(this)->grow(AtLeast);
}

void shrink_and_clear() {
  static_cast<DerivedT *>(this)->shrink_and_clear();
}

template <typename KeyArg, typename... ValueArgs>
BucketT *InsertIntoBucket(BucketT *TheBucket, KeyArg &&Key,
                          ValueArgs &&... Values) {
  TheBucket = InsertIntoBucketImpl(Key, Key, TheBucket);

  TheBucket->getFirst() = std::forward<KeyArg>(Key);
  ::new (&TheBucket->getSecond()) ValueT(std::forward<ValueArgs>(Values)...);
  return TheBucket;
}

template <typename LookupKeyT>
BucketT *InsertIntoBucketWithLookup(BucketT *TheBucket, KeyT &&Key,
                                    ValueT &&Value, LookupKeyT &Lookup) {
  TheBucket = InsertIntoBucketImpl(Key, Lookup, TheBucket);

  TheBucket->getFirst() = std::move(Key);
  ::new (&TheBucket->getSecond()) ValueT(std::move(Value));
  return TheBucket;
}

template <typename LookupKeyT>
BucketT *InsertIntoBucketImpl(const KeyT &Key, const LookupKeyT &Lookup,
                              BucketT *TheBucket) {
  incrementEpoch();

  // If the load of the hash table is more than 3/4, or if fewer than 1/8 of
  // the buckets are empty (meaning that many are filled with tombstones),
  // grow the table.
  //
  // The later case is tricky.  For example, if we had one empty bucket with
  // tons of tombstones, failing lookups (e.g. for insertion) would have to
  // probe almost the entire table until it found the empty bucket.  If the
  // table completely filled with tombstones, no lookup would ever succeed,
  // causing infinite loops in lookup.
  unsigned NewNumEntries = getNumEntries() + 1;
  unsigned NumBuckets = getNumBuckets();
  if (LLVM_UNLIKELY(NewNumEntries * 4 >= NumBuckets * 3)__builtin_expect((bool)(NewNumEntries * 4 >= NumBuckets * 3
), false)) {
    this->grow(NumBuckets * 2);
    LookupBucketFor(Lookup, TheBucket);
    NumBuckets = getNumBuckets();
  } else if (LLVM_UNLIKELY(NumBuckets-(NewNumEntries+getNumTombstones()) <=__builtin_expect((bool)(NumBuckets-(NewNumEntries+getNumTombstones
()) <= NumBuckets/8), false)
                           NumBuckets/8)__builtin_expect((bool)(NumBuckets-(NewNumEntries+getNumTombstones
()) <= NumBuckets/8), false)) {
    this->grow(NumBuckets);
    LookupBucketFor(Lookup, TheBucket);
  }
  assert(TheBucket)(static_cast <bool> (TheBucket) ? void (0) : __assert_fail
 ("TheBucket", "llvm/include/llvm/ADT/DenseMap.h", 590, __extension__
 __PRETTY_FUNCTION__));

  // Only update the state after we've grown our bucket space appropriately
  // so that when growing buckets we have self-consistent entry count.
  incrementNumEntries();

  // If we are writing over a tombstone, remember this.
  const KeyT EmptyKey = getEmptyKey();
  if (!KeyInfoT::isEqual(TheBucket->getFirst(), EmptyKey))
    decrementNumTombstones();

  return TheBucket;
}

/// LookupBucketFor - Lookup the appropriate bucket for Val, returning it in
/// FoundBucket.  If the bucket contains the key and a value, this returns
/// true, otherwise it returns a bucket with an empty marker or tombstone and
/// returns false.
template<typename LookupKeyT>
bool LookupBucketFor(const LookupKeyT &Val,
                     const BucketT *&FoundBucket) const {
  const BucketT *BucketsPtr = getBuckets();
  const unsigned NumBuckets = getNumBuckets();

  if (NumBuckets == 0) {
    FoundBucket = nullptr;
    return false;
  }

  // FoundTombstone - Keep track of whether we find a tombstone while probing.
  const BucketT *FoundTombstone = nullptr;
  const KeyT EmptyKey = getEmptyKey();
  const KeyT TombstoneKey = getTombstoneKey();
  assert(!KeyInfoT::isEqual(Val, EmptyKey) &&(static_cast <bool> (!KeyInfoT::isEqual(Val, EmptyKey) &&
 !KeyInfoT::isEqual(Val, TombstoneKey) && "Empty/Tombstone value shouldn't be inserted into map!"
) ? void (0) : __assert_fail ("!KeyInfoT::isEqual(Val, EmptyKey) && !KeyInfoT::isEqual(Val, TombstoneKey) && \"Empty/Tombstone value shouldn't be inserted into map!\""
, "llvm/include/llvm/ADT/DenseMap.h", 625, __extension__ __PRETTY_FUNCTION__
))
         !KeyInfoT::isEqual(Val, TombstoneKey) &&(static_cast <bool> (!KeyInfoT::isEqual(Val, EmptyKey) &&
 !KeyInfoT::isEqual(Val, TombstoneKey) && "Empty/Tombstone value shouldn't be inserted into map!"
) ? void (0) : __assert_fail ("!KeyInfoT::isEqual(Val, EmptyKey) && !KeyInfoT::isEqual(Val, TombstoneKey) && \"Empty/Tombstone value shouldn't be inserted into map!\""
, "llvm/include/llvm/ADT/DenseMap.h", 625, __extension__ __PRETTY_FUNCTION__
))
         "Empty/Tombstone value shouldn't be inserted into map!")(static_cast <bool> (!KeyInfoT::isEqual(Val, EmptyKey) &&
 !KeyInfoT::isEqual(Val, TombstoneKey) && "Empty/Tombstone value shouldn't be inserted into map!"
) ? void (0) : __assert_fail ("!KeyInfoT::isEqual(Val, EmptyKey) && !KeyInfoT::isEqual(Val, TombstoneKey) && \"Empty/Tombstone value shouldn't be inserted into map!\""
, "llvm/include/llvm/ADT/DenseMap.h", 625, __extension__ __PRETTY_FUNCTION__
));

  unsigned BucketNo = getHashValue(Val) & (NumBuckets-1);
  unsigned ProbeAmt = 1;
  while (true) {
    const BucketT *ThisBucket = BucketsPtr + BucketNo;
    // Found Val's bucket?  If so, return it.
    if (LLVM_LIKELY(KeyInfoT::isEqual(Val, ThisBucket->getFirst()))__builtin_expect((bool)(KeyInfoT::isEqual(Val, ThisBucket->
getFirst())), true)) {
      FoundBucket = ThisBucket;
      return true;
    }

    // If we found an empty bucket, the key doesn't exist in the set.
    // Insert it and return the default value.
    if (LLVM_LIKELY(KeyInfoT::isEqual(ThisBucket->getFirst(), EmptyKey))__builtin_expect((bool)(KeyInfoT::isEqual(ThisBucket->getFirst
(), EmptyKey)), true)) {
      // If we've already seen a tombstone while probing, fill it in instead
      // of the empty bucket we eventually probed to.
      FoundBucket = FoundTombstone ? FoundTombstone : ThisBucket;
      return false;
    }

    // If this is a tombstone, remember it.  If Val ends up not in the map, we
    // prefer to return it than something that would require more probing.
    if (KeyInfoT::isEqual(ThisBucket->getFirst(), TombstoneKey) &&
        !FoundTombstone)
      FoundTombstone = ThisBucket;  // Remember the first tombstone found.

    // Otherwise, it's a hash collision or a tombstone, continue quadratic
    // probing.
    BucketNo += ProbeAmt++;
    BucketNo &= (NumBuckets-1);
  }
}

template <typename LookupKeyT>
bool LookupBucketFor(const LookupKeyT &Val, BucketT *&FoundBucket) {
  const BucketT *ConstFoundBucket;
  bool Result = const_cast<const DenseMapBase *>(this)
    ->LookupBucketFor(Val, ConstFoundBucket);
  FoundBucket = const_cast<BucketT *>(ConstFoundBucket);
  return Result;
}

668public:
/// Return the approximate size (in bytes) of the actual map.
/// This is just the raw memory used by DenseMap.
/// If entries are pointers to objects, the size of the referenced objects
/// are not included.
size_t getMemorySize() const {
  return getNumBuckets() * sizeof(BucketT);
}
676};

678/// Equality comparison for DenseMap.
679///
680/// Iterates over elements of LHS confirming that each (key, value) pair in LHS
681/// is also in RHS, and that no additional pairs are in RHS.
682/// Equivalent to N calls to RHS.find and N value comparisons. Amortized
683/// complexity is linear, worst case is O(N^2) (if every hash collides).
684template <typename DerivedT, typename KeyT, typename ValueT, typename KeyInfoT,
        typename BucketT>
686bool operator==(
  const DenseMapBase<DerivedT, KeyT, ValueT, KeyInfoT, BucketT> &LHS,
  const DenseMapBase<DerivedT, KeyT, ValueT, KeyInfoT, BucketT> &RHS) {
if (LHS.size() != RHS.size())
  return false;

for (auto &KV : LHS) {
  auto I = RHS.find(KV.first);
  if (I == RHS.end() || I->second != KV.second)
    return false;
}

return true;
699}

701/// Inequality comparison for DenseMap.
702///
703/// Equivalent to !(LHS == RHS). See operator== for performance notes.
704template <typename DerivedT, typename KeyT, typename ValueT, typename KeyInfoT,
        typename BucketT>
706bool operator!=(
  const DenseMapBase<DerivedT, KeyT, ValueT, KeyInfoT, BucketT> &LHS,
  const DenseMapBase<DerivedT, KeyT, ValueT, KeyInfoT, BucketT> &RHS) {
return !(LHS == RHS);
710}

712template <typename KeyT, typename ValueT,
        typename KeyInfoT = DenseMapInfo<KeyT>,
        typename BucketT = llvm::detail::DenseMapPair<KeyT, ValueT>>
715class DenseMap : public DenseMapBase<DenseMap<KeyT, ValueT, KeyInfoT, BucketT>,
                                   KeyT, ValueT, KeyInfoT, BucketT> {
friend class DenseMapBase<DenseMap, KeyT, ValueT, KeyInfoT, BucketT>;

// Lift some types from the dependent base class into this class for
// simplicity of referring to them.
using BaseT = DenseMapBase<DenseMap, KeyT, ValueT, KeyInfoT, BucketT>;

BucketT *Buckets;
unsigned NumEntries;
unsigned NumTombstones;
unsigned NumBuckets;

728public:
/// Create a DenseMap with an optional \p InitialReserve that guarantee that
/// this number of elements can be inserted in the map without grow()
explicit DenseMap(unsigned InitialReserve = 0) { init(InitialReserve); }

DenseMap(const DenseMap &other) : BaseT() {
  init(0);
  copyFrom(other);
}

DenseMap(DenseMap &&other) : BaseT() {
  init(0);
  swap(other);
}

template<typename InputIt>
DenseMap(const InputIt &I, const InputIt &E) {
  init(std::distance(I, E));
  this->insert(I, E);
}

DenseMap(std::initializer_list<typename BaseT::value_type> Vals) {
  init(Vals.size());
  this->insert(Vals.begin(), Vals.end());
}

~DenseMap() {
  this->destroyAll();
  deallocate_buffer(Buckets, sizeof(BucketT) * NumBuckets, alignof(BucketT));
}

void swap(DenseMap& RHS) {
  this->incrementEpoch();
  RHS.incrementEpoch();
  std::swap(Buckets, RHS.Buckets);
  std::swap(NumEntries, RHS.NumEntries);
  std::swap(NumTombstones, RHS.NumTombstones);
  std::swap(NumBuckets, RHS.NumBuckets);
}

DenseMap& operator=(const DenseMap& other) {
  if (&other != this)
    copyFrom(other);
  return *this;
}

DenseMap& operator=(DenseMap &&other) {
  this->destroyAll();
  deallocate_buffer(Buckets, sizeof(BucketT) * NumBuckets, alignof(BucketT));
  init(0);
  swap(other);
  return *this;
}

void copyFrom(const DenseMap& other) {
  this->destroyAll();
  deallocate_buffer(Buckets, sizeof(BucketT) * NumBuckets, alignof(BucketT));
  if (allocateBuckets(other.NumBuckets)) {
    this->BaseT::copyFrom(other);
  } else {
    NumEntries = 0;
    NumTombstones = 0;
  }
}

void init(unsigned InitNumEntries) {
  auto InitBuckets = BaseT::getMinBucketToReserveForEntries(InitNumEntries);
  if (allocateBuckets(InitBuckets)) {
    this->BaseT::initEmpty();
  } else {
    NumEntries = 0;
    NumTombstones = 0;
  }
}

void grow(unsigned AtLeast) {
  unsigned OldNumBuckets = NumBuckets;
  BucketT *OldBuckets = Buckets;

  allocateBuckets(std::max<unsigned>(64, static_cast<unsigned>(NextPowerOf2(AtLeast-1))));
  assert(Buckets)(static_cast <bool> (Buckets) ? void (0) : __assert_fail
 ("Buckets", "llvm/include/llvm/ADT/DenseMap.h", 808, __extension__
 __PRETTY_FUNCTION__));
  if (!OldBuckets) {
    this->BaseT::initEmpty();
    return;
  }

  this->moveFromOldBuckets(OldBuckets, OldBuckets+OldNumBuckets);

  // Free the old table.
  deallocate_buffer(OldBuckets, sizeof(BucketT) * OldNumBuckets,
                    alignof(BucketT));
}

void shrink_and_clear() {
  unsigned OldNumBuckets = NumBuckets;
  unsigned OldNumEntries = NumEntries;
  this->destroyAll();

  // Reduce the number of buckets.
  unsigned NewNumBuckets = 0;
  if (OldNumEntries)
    NewNumBuckets = std::max(64, 1 << (Log2_32_Ceil(OldNumEntries) + 1));
  if (NewNumBuckets == NumBuckets) {
    this->BaseT::initEmpty();
    return;
  }

  deallocate_buffer(Buckets, sizeof(BucketT) * OldNumBuckets,
                    alignof(BucketT));
  init(NewNumBuckets);
}

840private:
unsigned getNumEntries() const {
  return NumEntries;
}

void setNumEntries(unsigned Num) {
  NumEntries = Num;
}

unsigned getNumTombstones() const {
  return NumTombstones;
}

void setNumTombstones(unsigned Num) {
  NumTombstones = Num;
}

BucketT *getBuckets() const {
  return Buckets;
}

unsigned getNumBuckets() const {
  return NumBuckets;
}

bool allocateBuckets(unsigned Num) {
  NumBuckets = Num;
  if (NumBuckets == 0) {
    Buckets = nullptr;
    return false;
  }

  Buckets = static_cast<BucketT *>(
      allocate_buffer(sizeof(BucketT) * NumBuckets, alignof(BucketT)));
  return true;
}
876};

878template <typename KeyT, typename ValueT, unsigned InlineBuckets = 4,
        typename KeyInfoT = DenseMapInfo<KeyT>,
        typename BucketT = llvm::detail::DenseMapPair<KeyT, ValueT>>
881class SmallDenseMap
  : public DenseMapBase<
        SmallDenseMap<KeyT, ValueT, InlineBuckets, KeyInfoT, BucketT>, KeyT,
        ValueT, KeyInfoT, BucketT> {
friend class DenseMapBase<SmallDenseMap, KeyT, ValueT, KeyInfoT, BucketT>;

// Lift some types from the dependent base class into this class for
// simplicity of referring to them.
using BaseT = DenseMapBase<SmallDenseMap, KeyT, ValueT, KeyInfoT, BucketT>;

static_assert(isPowerOf2_64(InlineBuckets),
              "InlineBuckets must be a power of 2.");

unsigned Small : 1;
unsigned NumEntries : 31;
unsigned NumTombstones;

struct LargeRep {
  BucketT *Buckets;
  unsigned NumBuckets;
};

/// A "union" of an inline bucket array and the struct representing
/// a large bucket. This union will be discriminated by the 'Small' bit.
AlignedCharArrayUnion<BucketT[InlineBuckets], LargeRep> storage;

907public:
explicit SmallDenseMap(unsigned NumInitBuckets = 0) {
  init(NumInitBuckets);
}

SmallDenseMap(const SmallDenseMap &other) : BaseT() {
  init(0);
  copyFrom(other);
}

SmallDenseMap(SmallDenseMap &&other) : BaseT() {
  init(0);
  swap(other);
}

template<typename InputIt>
SmallDenseMap(const InputIt &I, const InputIt &E) {
  init(NextPowerOf2(std::distance(I, E)));
  this->insert(I, E);
}

SmallDenseMap(std::initializer_list<typename BaseT::value_type> Vals)
    : SmallDenseMap(Vals.begin(), Vals.end()) {}

~SmallDenseMap() {
  this->destroyAll();
  deallocateBuckets();
}

void swap(SmallDenseMap& RHS) {
  unsigned TmpNumEntries = RHS.NumEntries;
  RHS.NumEntries = NumEntries;
  NumEntries = TmpNumEntries;
  std::swap(NumTombstones, RHS.NumTombstones);

  const KeyT EmptyKey = this->getEmptyKey();
  const KeyT TombstoneKey = this->getTombstoneKey();
  if (Small && RHS.Small) {
    // If we're swapping inline bucket arrays, we have to cope with some of
    // the tricky bits of DenseMap's storage system: the buckets are not
    // fully initialized. Thus we swap every key, but we may have
    // a one-directional move of the value.
    for (unsigned i = 0, e = InlineBuckets; i != e; ++i) {
      BucketT *LHSB = &getInlineBuckets()[i],
              *RHSB = &RHS.getInlineBuckets()[i];
      bool hasLHSValue = (!KeyInfoT::isEqual(LHSB->getFirst(), EmptyKey) &&
                          !KeyInfoT::isEqual(LHSB->getFirst(), TombstoneKey));
      bool hasRHSValue = (!KeyInfoT::isEqual(RHSB->getFirst(), EmptyKey) &&
                          !KeyInfoT::isEqual(RHSB->getFirst(), TombstoneKey));
      if (hasLHSValue && hasRHSValue) {
        // Swap together if we can...
        std::swap(*LHSB, *RHSB);
        continue;
      }
      // Swap separately and handle any asymmetry.
      std::swap(LHSB->getFirst(), RHSB->getFirst());
      if (hasLHSValue) {
        ::new (&RHSB->getSecond()) ValueT(std::move(LHSB->getSecond()));
        LHSB->getSecond().~ValueT();
      } else if (hasRHSValue) {
        ::new (&LHSB->getSecond()) ValueT(std::move(RHSB->getSecond()));
        RHSB->getSecond().~ValueT();
      }
    }
    return;
  }
  if (!Small && !RHS.Small) {
    std::swap(getLargeRep()->Buckets, RHS.getLargeRep()->Buckets);
    std::swap(getLargeRep()->NumBuckets, RHS.getLargeRep()->NumBuckets);
    return;
  }

  SmallDenseMap &SmallSide = Small ? *this : RHS;
  SmallDenseMap &LargeSide = Small ? RHS : *this;

  // First stash the large side's rep and move the small side across.
  LargeRep TmpRep = std::move(*LargeSide.getLargeRep());
  LargeSide.getLargeRep()->~LargeRep();
  LargeSide.Small = true;
  // This is similar to the standard move-from-old-buckets, but the bucket
  // count hasn't actually rotated in this case. So we have to carefully
  // move construct the keys and values into their new locations, but there
  // is no need to re-hash things.
  for (unsigned i = 0, e = InlineBuckets; i != e; ++i) {
    BucketT *NewB = &LargeSide.getInlineBuckets()[i],
            *OldB = &SmallSide.getInlineBuckets()[i];
    ::new (&NewB->getFirst()) KeyT(std::move(OldB->getFirst()));
    OldB->getFirst().~KeyT();
    if (!KeyInfoT::isEqual(NewB->getFirst(), EmptyKey) &&
        !KeyInfoT::isEqual(NewB->getFirst(), TombstoneKey)) {
      ::new (&NewB->getSecond()) ValueT(std::move(OldB->getSecond()));
      OldB->getSecond().~ValueT();
    }
  }

  // The hard part of moving the small buckets across is done, just move
  // the TmpRep into its new home.
  SmallSide.Small = false;
  new (SmallSide.getLargeRep()) LargeRep(std::move(TmpRep));
}

SmallDenseMap& operator=(const SmallDenseMap& other) {
  if (&other != this)
    copyFrom(other);
  return *this;
}

SmallDenseMap& operator=(SmallDenseMap &&other) {
  this->destroyAll();
  deallocateBuckets();
  init(0);
  swap(other);
  return *this;
}

void copyFrom(const SmallDenseMap& other) {
  this->destroyAll();
  deallocateBuckets();
  Small = true;
  if (other.getNumBuckets() > InlineBuckets) {
    Small = false;
    new (getLargeRep()) LargeRep(allocateBuckets(other.getNumBuckets()));
  }
  this->BaseT::copyFrom(other);
}

void init(unsigned InitBuckets) {
  Small = true;
  if (InitBuckets > InlineBuckets) {
    Small = false;
    new (getLargeRep()) LargeRep(allocateBuckets(InitBuckets));
  }
  this->BaseT::initEmpty();
}

void grow(unsigned AtLeast) {
  if (AtLeast > InlineBuckets)
    AtLeast = std::max<unsigned>(64, NextPowerOf2(AtLeast-1));

  if (Small) {
    // First move the inline buckets into a temporary storage.
    AlignedCharArrayUnion<BucketT[InlineBuckets]> TmpStorage;
    BucketT *TmpBegin = reinterpret_cast<BucketT *>(&TmpStorage);
    BucketT *TmpEnd = TmpBegin;

    // Loop over the buckets, moving non-empty, non-tombstones into the
    // temporary storage. Have the loop move the TmpEnd forward as it goes.
    const KeyT EmptyKey = this->getEmptyKey();
    const KeyT TombstoneKey = this->getTombstoneKey();
    for (BucketT *P = getBuckets(), *E = P + InlineBuckets; P != E; ++P) {
      if (!KeyInfoT::isEqual(P->getFirst(), EmptyKey) &&
          !KeyInfoT::isEqual(P->getFirst(), TombstoneKey)) {
        assert(size_t(TmpEnd - TmpBegin) < InlineBuckets &&(static_cast <bool> (size_t(TmpEnd - TmpBegin) < InlineBuckets
 && "Too many inline buckets!") ? void (0) : __assert_fail
 ("size_t(TmpEnd - TmpBegin) < InlineBuckets && \"Too many inline buckets!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1060, __extension__ __PRETTY_FUNCTION__
))
               "Too many inline buckets!")(static_cast <bool> (size_t(TmpEnd - TmpBegin) < InlineBuckets
 && "Too many inline buckets!") ? void (0) : __assert_fail
 ("size_t(TmpEnd - TmpBegin) < InlineBuckets && \"Too many inline buckets!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1060, __extension__ __PRETTY_FUNCTION__
));
        ::new (&TmpEnd->getFirst()) KeyT(std::move(P->getFirst()));
        ::new (&TmpEnd->getSecond()) ValueT(std::move(P->getSecond()));
        ++TmpEnd;
        P->getSecond().~ValueT();
      }
      P->getFirst().~KeyT();
    }

    // AtLeast == InlineBuckets can happen if there are many tombstones,
    // and grow() is used to remove them. Usually we always switch to the
    // large rep here.
    if (AtLeast > InlineBuckets) {
      Small = false;
      new (getLargeRep()) LargeRep(allocateBuckets(AtLeast));
    }
    this->moveFromOldBuckets(TmpBegin, TmpEnd);
    return;
  }

  LargeRep OldRep = std::move(*getLargeRep());
  getLargeRep()->~LargeRep();
  if (AtLeast <= InlineBuckets) {
    Small = true;
  } else {
    new (getLargeRep()) LargeRep(allocateBuckets(AtLeast));
  }

  this->moveFromOldBuckets(OldRep.Buckets, OldRep.Buckets+OldRep.NumBuckets);

  // Free the old table.
  deallocate_buffer(OldRep.Buckets, sizeof(BucketT) * OldRep.NumBuckets,
                    alignof(BucketT));
}

void shrink_and_clear() {
  unsigned OldSize = this->size();
  this->destroyAll();

  // Reduce the number of buckets.
  unsigned NewNumBuckets = 0;
  if (OldSize) {
    NewNumBuckets = 1 << (Log2_32_Ceil(OldSize) + 1);
    if (NewNumBuckets > InlineBuckets && NewNumBuckets < 64u)
      NewNumBuckets = 64;
  }
  if ((Small && NewNumBuckets <= InlineBuckets) ||
      (!Small && NewNumBuckets == getLargeRep()->NumBuckets)) {
    this->BaseT::initEmpty();
    return;
  }

  deallocateBuckets();
  init(NewNumBuckets);
}

1116private:
unsigned getNumEntries() const {
  return NumEntries;
}

void setNumEntries(unsigned Num) {
  // NumEntries is hardcoded to be 31 bits wide.
  assert(Num < (1U << 31) && "Cannot support more than 1<<31 entries")(static_cast <bool> (Num < (1U << 31) &&
 "Cannot support more than 1<<31 entries") ? void (0) :
 __assert_fail ("Num < (1U << 31) && \"Cannot support more than 1<<31 entries\""
, "llvm/include/llvm/ADT/DenseMap.h", 1123, __extension__ __PRETTY_FUNCTION__
));
  NumEntries = Num;
}

unsigned getNumTombstones() const {
  return NumTombstones;
}

void setNumTombstones(unsigned Num) {
  NumTombstones = Num;
}

const BucketT *getInlineBuckets() const {
  assert(Small)(static_cast <bool> (Small) ? void (0) : __assert_fail (
"Small", "llvm/include/llvm/ADT/DenseMap.h", 1136, __extension__
 __PRETTY_FUNCTION__));
  // Note that this cast does not violate aliasing rules as we assert that
  // the memory's dynamic type is the small, inline bucket buffer, and the
  // 'storage' is a POD containing a char buffer.
  return reinterpret_cast<const BucketT *>(&storage);
}

BucketT *getInlineBuckets() {
  return const_cast<BucketT *>(
    const_cast<const SmallDenseMap *>(this)->getInlineBuckets());
}

const LargeRep *getLargeRep() const {
  assert(!Small)(static_cast <bool> (!Small) ? void (0) : __assert_fail
 ("!Small", "llvm/include/llvm/ADT/DenseMap.h", 1149, __extension__
 __PRETTY_FUNCTION__));
  // Note, same rule about aliasing as with getInlineBuckets.
  return reinterpret_cast<const LargeRep *>(&storage);
}

LargeRep *getLargeRep() {
  return const_cast<LargeRep *>(
    const_cast<const SmallDenseMap *>(this)->getLargeRep());
}

const BucketT *getBuckets() const {
  return Small ? getInlineBuckets() : getLargeRep()->Buckets;
}

BucketT *getBuckets() {
  return const_cast<BucketT *>(
    const_cast<const SmallDenseMap *>(this)->getBuckets());
}

unsigned getNumBuckets() const {
  return Small ? InlineBuckets : getLargeRep()->NumBuckets;
}

void deallocateBuckets() {
  if (Small)
    return;

  deallocate_buffer(getLargeRep()->Buckets,
                    sizeof(BucketT) * getLargeRep()->NumBuckets,
                    alignof(BucketT));
  getLargeRep()->~LargeRep();
}

LargeRep allocateBuckets(unsigned Num) {
  assert(Num > InlineBuckets && "Must allocate more buckets than are inline")(static_cast <bool> (Num > InlineBuckets && "Must allocate more buckets than are inline"
) ? void (0) : __assert_fail ("Num > InlineBuckets && \"Must allocate more buckets than are inline\""
, "llvm/include/llvm/ADT/DenseMap.h", 1183, __extension__ __PRETTY_FUNCTION__
));
  LargeRep Rep = {static_cast<BucketT *>(allocate_buffer(
                      sizeof(BucketT) * Num, alignof(BucketT))),
                  Num};
  return Rep;
}
1189};

1191template <typename KeyT, typename ValueT, typename KeyInfoT, typename Bucket,
        bool IsConst>
1193class DenseMapIterator : DebugEpochBase::HandleBase {
friend class DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, true>;
friend class DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, false>;

1197public:
using difference_type = ptrdiff_t;
using value_type =
    typename std::conditional<IsConst, const Bucket, Bucket>::type;
using pointer = value_type *;
using reference = value_type &;
using iterator_category = std::forward_iterator_tag;

1205private:
pointer Ptr = nullptr;
pointer End = nullptr;

1209public:
DenseMapIterator() = default;

DenseMapIterator(pointer Pos, pointer E, const DebugEpochBase &Epoch,
                 bool NoAdvance = false)
    : DebugEpochBase::HandleBase(&Epoch), Ptr(Pos), End(E) {
  assert(isHandleInSync() && "invalid construction!")(static_cast <bool> (isHandleInSync() && "invalid construction!"
) ? void (0) : __assert_fail ("isHandleInSync() && \"invalid construction!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1215, __extension__ __PRETTY_FUNCTION__
));

  if (NoAdvance) return;
  if (shouldReverseIterate<KeyT>()) {
    RetreatPastEmptyBuckets();
    return;
  }
  AdvancePastEmptyBuckets();
}

// Converting ctor from non-const iterators to const iterators. SFINAE'd out
// for const iterator destinations so it doesn't end up as a user defined copy
// constructor.
template <bool IsConstSrc,
          typename = std::enable_if_t<!IsConstSrc && IsConst>>
DenseMapIterator(
    const DenseMapIterator<KeyT, ValueT, KeyInfoT, Bucket, IsConstSrc> &I)
    : DebugEpochBase::HandleBase(I), Ptr(I.Ptr), End(I.End) {}

reference operator*() const {
  assert(isHandleInSync() && "invalid iterator access!")(static_cast <bool> (isHandleInSync() && "invalid iterator access!"
) ? void (0) : __assert_fail ("isHandleInSync() && \"invalid iterator access!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1235, __extension__ __PRETTY_FUNCTION__
));
  assert(Ptr != End && "dereferencing end() iterator")(static_cast <bool> (Ptr != End && "dereferencing end() iterator"
) ? void (0) : __assert_fail ("Ptr != End && \"dereferencing end() iterator\""
, "llvm/include/llvm/ADT/DenseMap.h", 1236, __extension__ __PRETTY_FUNCTION__
));
  if (shouldReverseIterate<KeyT>())
    return Ptr[-1];
  return *Ptr;
}
pointer operator->() const {
  assert(isHandleInSync() && "invalid iterator access!")(static_cast <bool> (isHandleInSync() && "invalid iterator access!"
) ? void (0) : __assert_fail ("isHandleInSync() && \"invalid iterator access!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1242, __extension__ __PRETTY_FUNCTION__
));
  assert(Ptr != End && "dereferencing end() iterator")(static_cast <bool> (Ptr != End && "dereferencing end() iterator"
) ? void (0) : __assert_fail ("Ptr != End && \"dereferencing end() iterator\""
, "llvm/include/llvm/ADT/DenseMap.h", 1243, __extension__ __PRETTY_FUNCTION__
));
  if (shouldReverseIterate<KeyT>())
    return &(Ptr[-1]);
  return Ptr;
}

friend bool operator==(const DenseMapIterator &LHS,
                       const DenseMapIterator &RHS) {
  assert((!LHS.Ptr || LHS.isHandleInSync()) && "handle not in sync!")(static_cast <bool> ((!LHS.Ptr || LHS.isHandleInSync())
 && "handle not in sync!") ? void (0) : __assert_fail
 ("(!LHS.Ptr || LHS.isHandleInSync()) && \"handle not in sync!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1251, __extension__ __PRETTY_FUNCTION__
));
26
←
Assuming field 'Ptr' is null→
27
←
'?' condition is true→
  assert((!RHS.Ptr || RHS.isHandleInSync()) && "handle not in sync!")(static_cast <bool> ((!RHS.Ptr || RHS.isHandleInSync())
 && "handle not in sync!") ? void (0) : __assert_fail
 ("(!RHS.Ptr || RHS.isHandleInSync()) && \"handle not in sync!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1252, __extension__ __PRETTY_FUNCTION__
));
28
←
Assuming field 'Ptr' is null→
29
←
'?' condition is true→
  assert(LHS.getEpochAddress() == RHS.getEpochAddress() &&(static_cast <bool> (LHS.getEpochAddress() == RHS.getEpochAddress
() && "comparing incomparable iterators!") ? void (0)
 : __assert_fail ("LHS.getEpochAddress() == RHS.getEpochAddress() && \"comparing incomparable iterators!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1254, __extension__ __PRETTY_FUNCTION__
))
30
←
Assuming the condition is true→
31
←
'?' condition is true→
         "comparing incomparable iterators!")(static_cast <bool> (LHS.getEpochAddress() == RHS.getEpochAddress
() && "comparing incomparable iterators!") ? void (0)
 : __assert_fail ("LHS.getEpochAddress() == RHS.getEpochAddress() && \"comparing incomparable iterators!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1254, __extension__ __PRETTY_FUNCTION__
));
  return LHS.Ptr == RHS.Ptr;
32
←
Returning the value 1, which participates in a condition later→
}

friend bool operator!=(const DenseMapIterator &LHS,
                       const DenseMapIterator &RHS) {
  return !(LHS == RHS);
25
←
Calling 'operator=='→
33
←
Returning from 'operator=='→
34
←
Returning zero, which participates in a condition later→
}

inline DenseMapIterator& operator++() {  // Preincrement
  assert(isHandleInSync() && "invalid iterator access!")(static_cast <bool> (isHandleInSync() && "invalid iterator access!"
) ? void (0) : __assert_fail ("isHandleInSync() && \"invalid iterator access!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1264, __extension__ __PRETTY_FUNCTION__
));
  assert(Ptr != End && "incrementing end() iterator")(static_cast <bool> (Ptr != End && "incrementing end() iterator"
) ? void (0) : __assert_fail ("Ptr != End && \"incrementing end() iterator\""
, "llvm/include/llvm/ADT/DenseMap.h", 1265, __extension__ __PRETTY_FUNCTION__
));
  if (shouldReverseIterate<KeyT>()) {
    --Ptr;
    RetreatPastEmptyBuckets();
    return *this;
  }
  ++Ptr;
  AdvancePastEmptyBuckets();
  return *this;
}
DenseMapIterator operator++(int) {  // Postincrement
  assert(isHandleInSync() && "invalid iterator access!")(static_cast <bool> (isHandleInSync() && "invalid iterator access!"
) ? void (0) : __assert_fail ("isHandleInSync() && \"invalid iterator access!\""
, "llvm/include/llvm/ADT/DenseMap.h", 1276, __extension__ __PRETTY_FUNCTION__
));
  DenseMapIterator tmp = *this; ++*this; return tmp;
}

1280private:
void AdvancePastEmptyBuckets() {
  assert(Ptr <= End)(static_cast <bool> (Ptr <= End) ? void (0) : __assert_fail
 ("Ptr <= End", "llvm/include/llvm/ADT/DenseMap.h", 1282, __extension__
 __PRETTY_FUNCTION__));
  const KeyT Empty = KeyInfoT::getEmptyKey();
  const KeyT Tombstone = KeyInfoT::getTombstoneKey();

  while (Ptr != End && (KeyInfoT::isEqual(Ptr->getFirst(), Empty) ||
                        KeyInfoT::isEqual(Ptr->getFirst(), Tombstone)))
    ++Ptr;
}

void RetreatPastEmptyBuckets() {
  assert(Ptr >= End)(static_cast <bool> (Ptr >= End) ? void (0) : __assert_fail
 ("Ptr >= End", "llvm/include/llvm/ADT/DenseMap.h", 1292, __extension__
 __PRETTY_FUNCTION__));
  const KeyT Empty = KeyInfoT::getEmptyKey();
  const KeyT Tombstone = KeyInfoT::getTombstoneKey();

  while (Ptr != End && (KeyInfoT::isEqual(Ptr[-1].getFirst(), Empty) ||
                        KeyInfoT::isEqual(Ptr[-1].getFirst(), Tombstone)))
    --Ptr;
}
1300};

1302template <typename KeyT, typename ValueT, typename KeyInfoT>
1303inline size_t capacity_in_bytes(const DenseMap<KeyT, ValueT, KeyInfoT> &X) {
return X.getMemorySize();
1305}

1307} // end namespace llvm

1309#endif // LLVM_ADT_DENSEMAP_H

←

/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/clang/include/clang/AST/GlobalDecl.h

→

1//===- GlobalDecl.h - Global declaration holder -----------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// A GlobalDecl can hold either a regular variable/function or a C++ ctor/dtor
10// together with its type.
11//
12//===----------------------------------------------------------------------===//
13 
14#ifndef LLVM_CLANG_AST_GLOBALDECL_H
15#define LLVM_CLANG_AST_GLOBALDECL_H
16 
17#include "clang/AST/Attr.h"
18#include "clang/AST/DeclCXX.h"
19#include "clang/AST/DeclObjC.h"
20#include "clang/AST/DeclOpenMP.h"
21#include "clang/AST/DeclTemplate.h"
22#include "clang/Basic/ABI.h"
23#include "clang/Basic/LLVM.h"
24#include "llvm/ADT/DenseMapInfo.h"
25#include "llvm/ADT/PointerIntPair.h"
26#include "llvm/Support/Casting.h"
27#include "llvm/Support/type_traits.h"
28#include <cassert>
29 
30namespace clang {
31 
32enum class DynamicInitKind : unsigned {
33  NoStub = 0,
34  Initializer,
35  AtExit,
36  GlobalArrayDestructor
37};
38 
39enum class KernelReferenceKind : unsigned {
40  Kernel = 0,
41  Stub = 1,
42};
43 
44/// GlobalDecl - represents a global declaration. This can either be a
45/// CXXConstructorDecl and the constructor type (Base, Complete).
46/// a CXXDestructorDecl and the destructor type (Base, Complete),
47/// a FunctionDecl and the kernel reference type (Kernel, Stub), or
48/// a VarDecl, a FunctionDecl or a BlockDecl.
49///
50/// When a new type of GlobalDecl is added, the following places should
51/// be updated to convert a Decl* to a GlobalDecl:
52/// PredefinedExpr::ComputeName() in lib/AST/Expr.cpp.
53/// getParentOfLocalEntity() in lib/AST/ItaniumMangle.cpp
54/// ASTNameGenerator::Implementation::writeFuncOrVarName in lib/AST/Mangle.cpp
55///
56class GlobalDecl {
57  llvm::PointerIntPair<const Decl *, 3> Value;
58  unsigned MultiVersionIndex = 0;
59 
60  void Init(const Decl *D) {
61    assert(!isa<CXXConstructorDecl>(D) && "Use other ctor with ctor decls!")(static_cast <bool> (!isa<CXXConstructorDecl>(D) &&
 "Use other ctor with ctor decls!") ? void (0) : __assert_fail
 ("!isa<CXXConstructorDecl>(D) && \"Use other ctor with ctor decls!\""
, "clang/include/clang/AST/GlobalDecl.h", 61, __extension__ __PRETTY_FUNCTION__
));
62    assert(!isa<CXXDestructorDecl>(D) && "Use other ctor with dtor decls!")(static_cast <bool> (!isa<CXXDestructorDecl>(D) &&
 "Use other ctor with dtor decls!") ? void (0) : __assert_fail
 ("!isa<CXXDestructorDecl>(D) && \"Use other ctor with dtor decls!\""
, "clang/include/clang/AST/GlobalDecl.h", 62, __extension__ __PRETTY_FUNCTION__
));
63    assert(!D->hasAttr<CUDAGlobalAttr>() && "Use other ctor with GPU kernels!")(static_cast <bool> (!D->hasAttr<CUDAGlobalAttr>
() && "Use other ctor with GPU kernels!") ? void (0) :
 __assert_fail ("!D->hasAttr<CUDAGlobalAttr>() && \"Use other ctor with GPU kernels!\""
, "clang/include/clang/AST/GlobalDecl.h", 63, __extension__ __PRETTY_FUNCTION__
));
64 
65    Value.setPointer(D);
66  }
67 
68public:
69  GlobalDecl() = default;
70  GlobalDecl(const VarDecl *D) { Init(D);}
71  GlobalDecl(const FunctionDecl *D, unsigned MVIndex = 0)
72      : MultiVersionIndex(MVIndex) {
73    if (!D->hasAttr<CUDAGlobalAttr>()) {
74      Init(D);
75      return;
76    }
77    Value.setPointerAndInt(D, unsigned(getDefaultKernelReference(D)));
78  }
79  GlobalDecl(const FunctionDecl *D, KernelReferenceKind Kind)
80      : Value(D, unsigned(Kind)) {
81    assert(D->hasAttr<CUDAGlobalAttr>() && "Decl is not a GPU kernel!")(static_cast <bool> (D->hasAttr<CUDAGlobalAttr>
() && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("D->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 81, __extension__ __PRETTY_FUNCTION__
));
82  }
83  GlobalDecl(const NamedDecl *D) { Init(D); }
84  GlobalDecl(const BlockDecl *D) { Init(D); }
85  GlobalDecl(const CapturedDecl *D) { Init(D); }
86  GlobalDecl(const ObjCMethodDecl *D) { Init(D); }
87  GlobalDecl(const OMPDeclareReductionDecl *D) { Init(D); }
88  GlobalDecl(const OMPDeclareMapperDecl *D) { Init(D); }
89  GlobalDecl(const CXXConstructorDecl *D, CXXCtorType Type) : Value(D, Type) {}
90  GlobalDecl(const CXXDestructorDecl *D, CXXDtorType Type) : Value(D, Type) {}
91  GlobalDecl(const VarDecl *D, DynamicInitKind StubKind)
92      : Value(D, unsigned(StubKind)) {}
93 
94  GlobalDecl getCanonicalDecl() const {
95    GlobalDecl CanonGD;
96    CanonGD.Value.setPointer(Value.getPointer()->getCanonicalDecl());
97    CanonGD.Value.setInt(Value.getInt());
98    CanonGD.MultiVersionIndex = MultiVersionIndex;
99 
100    return CanonGD;
101  }
102 
103  const Decl *getDecl() const { return Value.getPointer(); }
39
←
Calling 'PointerIntPair::getPointer'→
48
←
Returning from 'PointerIntPair::getPointer'→
49
←
Returning pointer→
104 
105  CXXCtorType getCtorType() const {
106    assert(isa<CXXConstructorDecl>(getDecl()) && "Decl is not a ctor!")(static_cast <bool> (isa<CXXConstructorDecl>(getDecl
()) && "Decl is not a ctor!") ? void (0) : __assert_fail
 ("isa<CXXConstructorDecl>(getDecl()) && \"Decl is not a ctor!\""
, "clang/include/clang/AST/GlobalDecl.h", 106, __extension__ __PRETTY_FUNCTION__
));
107    return static_cast<CXXCtorType>(Value.getInt());
108  }
109 
110  CXXDtorType getDtorType() const {
111    assert(isa<CXXDestructorDecl>(getDecl()) && "Decl is not a dtor!")(static_cast <bool> (isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a dtor!") ? void (0) : __assert_fail
 ("isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a dtor!\""
, "clang/include/clang/AST/GlobalDecl.h", 111, __extension__ __PRETTY_FUNCTION__
));
112    return static_cast<CXXDtorType>(Value.getInt());
113  }
114 
115  DynamicInitKind getDynamicInitKind() const {
116    assert(isa<VarDecl>(getDecl()) &&(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "clang/include/clang/AST/GlobalDecl.h", 118, __extension__ __PRETTY_FUNCTION__
))
117           cast<VarDecl>(getDecl())->hasGlobalStorage() &&(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "clang/include/clang/AST/GlobalDecl.h", 118, __extension__ __PRETTY_FUNCTION__
))
118           "Decl is not a global variable!")(static_cast <bool> (isa<VarDecl>(getDecl()) &&
 cast<VarDecl>(getDecl())->hasGlobalStorage() &&
 "Decl is not a global variable!") ? void (0) : __assert_fail
 ("isa<VarDecl>(getDecl()) && cast<VarDecl>(getDecl())->hasGlobalStorage() && \"Decl is not a global variable!\""
, "clang/include/clang/AST/GlobalDecl.h", 118, __extension__ __PRETTY_FUNCTION__
));
119    return static_cast<DynamicInitKind>(Value.getInt());
120  }
121 
122  unsigned getMultiVersionIndex() const {
123    assert(isa<FunctionDecl>((static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
))
124               getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
))
125               !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
))
126           !isa<CXXConstructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
))
127           !isa<CXXDestructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
))
128           "Decl is not a plain FunctionDecl!")(static_cast <bool> (isa<FunctionDecl>( getDecl()
) && !cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>() && !isa<CXXConstructorDecl
>(getDecl()) && !isa<CXXDestructorDecl>(getDecl
()) && "Decl is not a plain FunctionDecl!") ? void (0
) : __assert_fail ("isa<FunctionDecl>( getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 128, __extension__ __PRETTY_FUNCTION__
));
129    return MultiVersionIndex;
130  }
131 
132  KernelReferenceKind getKernelReferenceKind() const {
133    assert(((isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
134             cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) ||(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
135            (isa<FunctionTemplateDecl>(getDecl()) &&(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
136             cast<FunctionTemplateDecl>(getDecl())(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
137                 ->getTemplatedDecl()(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
138                 ->hasAttr<CUDAGlobalAttr>())) &&(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
))
139           "Decl is not a GPU kernel!")(static_cast <bool> (((isa<FunctionDecl>(getDecl(
)) && cast<FunctionDecl>(getDecl())->hasAttr
<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>
(getDecl()) && cast<FunctionTemplateDecl>(getDecl
()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>
())) && "Decl is not a GPU kernel!") ? void (0) : __assert_fail
 ("((isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>()) || (isa<FunctionTemplateDecl>(getDecl()) && cast<FunctionTemplateDecl>(getDecl()) ->getTemplatedDecl() ->hasAttr<CUDAGlobalAttr>())) && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 139, __extension__ __PRETTY_FUNCTION__
));
140    return static_cast<KernelReferenceKind>(Value.getInt());
141  }
142 
143  friend bool operator==(const GlobalDecl &LHS, const GlobalDecl &RHS) {
144    return LHS.Value == RHS.Value &&
145           LHS.MultiVersionIndex == RHS.MultiVersionIndex;
146  }
147 
148  void *getAsOpaquePtr() const { return Value.getOpaqueValue(); }
149 
150  explicit operator bool() const { return getAsOpaquePtr(); }
151 
152  static GlobalDecl getFromOpaquePtr(void *P) {
153    GlobalDecl GD;
154    GD.Value.setFromOpaqueValue(P);
155    return GD;
156  }
157 
158  static KernelReferenceKind getDefaultKernelReference(const FunctionDecl *D) {
159    return D->getLangOpts().CUDAIsDevice ? KernelReferenceKind::Kernel
160                                         : KernelReferenceKind::Stub;
161  }
162 
163  GlobalDecl getWithDecl(const Decl *D) {
164    GlobalDecl Result(*this);
165    Result.Value.setPointer(D);
166    return Result;
167  }
168 
169  GlobalDecl getWithCtorType(CXXCtorType Type) {
170    assert(isa<CXXConstructorDecl>(getDecl()))(static_cast <bool> (isa<CXXConstructorDecl>(getDecl
())) ? void (0) : __assert_fail ("isa<CXXConstructorDecl>(getDecl())"
, "clang/include/clang/AST/GlobalDecl.h", 170, __extension__ __PRETTY_FUNCTION__
));
171    GlobalDecl Result(*this);
172    Result.Value.setInt(Type);
173    return Result;
174  }
175 
176  GlobalDecl getWithDtorType(CXXDtorType Type) {
177    assert(isa<CXXDestructorDecl>(getDecl()))(static_cast <bool> (isa<CXXDestructorDecl>(getDecl
())) ? void (0) : __assert_fail ("isa<CXXDestructorDecl>(getDecl())"
, "clang/include/clang/AST/GlobalDecl.h", 177, __extension__ __PRETTY_FUNCTION__
));
178    GlobalDecl Result(*this);
179    Result.Value.setInt(Type);
180    return Result;
181  }
182 
183  GlobalDecl getWithMultiVersionIndex(unsigned Index) {
184    assert(isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 188, __extension__ __PRETTY_FUNCTION__
))
185           !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 188, __extension__ __PRETTY_FUNCTION__
))
186           !isa<CXXConstructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 188, __extension__ __PRETTY_FUNCTION__
))
187           !isa<CXXDestructorDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 188, __extension__ __PRETTY_FUNCTION__
))
188           "Decl is not a plain FunctionDecl!")(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && !cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && !isa<CXXConstructorDecl>
(getDecl()) && !isa<CXXDestructorDecl>(getDecl(
)) && "Decl is not a plain FunctionDecl!") ? void (0)
 : __assert_fail ("isa<FunctionDecl>(getDecl()) && !cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && !isa<CXXConstructorDecl>(getDecl()) && !isa<CXXDestructorDecl>(getDecl()) && \"Decl is not a plain FunctionDecl!\""
, "clang/include/clang/AST/GlobalDecl.h", 188, __extension__ __PRETTY_FUNCTION__
));
189    GlobalDecl Result(*this);
190    Result.MultiVersionIndex = Index;
191    return Result;
192  }
193 
194  GlobalDecl getWithKernelReferenceKind(KernelReferenceKind Kind) {
195    assert(isa<FunctionDecl>(getDecl()) &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 197, __extension__ __PRETTY_FUNCTION__
))
196           cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() &&(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 197, __extension__ __PRETTY_FUNCTION__
))
197           "Decl is not a GPU kernel!")(static_cast <bool> (isa<FunctionDecl>(getDecl())
 && cast<FunctionDecl>(getDecl())->hasAttr<
CUDAGlobalAttr>() && "Decl is not a GPU kernel!") ?
 void (0) : __assert_fail ("isa<FunctionDecl>(getDecl()) && cast<FunctionDecl>(getDecl())->hasAttr<CUDAGlobalAttr>() && \"Decl is not a GPU kernel!\""
, "clang/include/clang/AST/GlobalDecl.h", 197, __extension__ __PRETTY_FUNCTION__
));
198    GlobalDecl Result(*this);
199    Result.Value.setInt(unsigned(Kind));
200    return Result;
201  }
202};
203 
204} // namespace clang
205 
206namespace llvm {
207 
208  template<> struct DenseMapInfo<clang::GlobalDecl> {
209    static inline clang::GlobalDecl getEmptyKey() {
210      return clang::GlobalDecl();
211    }
212 
213    static inline clang::GlobalDecl getTombstoneKey() {
214      return clang::GlobalDecl::
215        getFromOpaquePtr(reinterpret_cast<void*>(-1));
216    }
217 
218    static unsigned getHashValue(clang::GlobalDecl GD) {
219      return DenseMapInfo<void*>::getHashValue(GD.getAsOpaquePtr());
220    }
221 
222    static bool isEqual(clang::GlobalDecl LHS,
223                        clang::GlobalDecl RHS) {
224      return LHS == RHS;
225    }
226  };
227 
228} // namespace llvm
229 
230#endif // LLVM_CLANG_AST_GLOBALDECL_H

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/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/llvm/include/llvm/ADT/PointerIntPair.h

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1//===- llvm/ADT/PointerIntPair.h - Pair for pointer and int -----*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// This file defines the PointerIntPair class.
11///
12//===----------------------------------------------------------------------===//
13 
14#ifndef LLVM_ADT_POINTERINTPAIR_H
15#define LLVM_ADT_POINTERINTPAIR_H
16 
17#include "llvm/Support/Compiler.h"
18#include "llvm/Support/PointerLikeTypeTraits.h"
19#include "llvm/Support/type_traits.h"
20#include <cassert>
21#include <cstdint>
22#include <limits>
23 
24namespace llvm {
25 
26template <typename T, typename Enable> struct DenseMapInfo;
27template <typename PointerT, unsigned IntBits, typename PtrTraits>
28struct PointerIntPairInfo;
29 
30/// PointerIntPair - This class implements a pair of a pointer and small
31/// integer.  It is designed to represent this in the space required by one
32/// pointer by bitmangling the integer into the low part of the pointer.  This
33/// can only be done for small integers: typically up to 3 bits, but it depends
34/// on the number of bits available according to PointerLikeTypeTraits for the
35/// type.
36///
37/// Note that PointerIntPair always puts the IntVal part in the highest bits
38/// possible.  For example, PointerIntPair<void*, 1, bool> will put the bit for
39/// the bool into bit #2, not bit #0, which allows the low two bits to be used
40/// for something else.  For example, this allows:
41///   PointerIntPair<PointerIntPair<void*, 1, bool>, 1, bool>
42/// ... and the two bools will land in different bits.
43template <typename PointerTy, unsigned IntBits, typename IntType = unsigned,
44          typename PtrTraits = PointerLikeTypeTraits<PointerTy>,
45          typename Info = PointerIntPairInfo<PointerTy, IntBits, PtrTraits>>
46class PointerIntPair {
47  // Used by MSVC visualizer and generally helpful for debugging/visualizing.
48  using InfoTy = Info;
49  intptr_t Value = 0;
50 
51public:
52  constexpr PointerIntPair() = default;
53 
54  PointerIntPair(PointerTy PtrVal, IntType IntVal) {
55    setPointerAndInt(PtrVal, IntVal);
56  }
57 
58  explicit PointerIntPair(PointerTy PtrVal) { initWithPointer(PtrVal); }
59 
60  PointerTy getPointer() const { return Info::getPointer(Value); }
40
←
Calling 'PointerIntPairInfo::getPointer'→
46
←
Returning from 'PointerIntPairInfo::getPointer'→
47
←
Returning pointer→
61 
62  IntType getInt() const { return (IntType)Info::getInt(Value); }
63 
64  void setPointer(PointerTy PtrVal) & {
65    Value = Info::updatePointer(Value, PtrVal);
66  }
67 
68  void setInt(IntType IntVal) & {
69    Value = Info::updateInt(Value, static_cast<intptr_t>(IntVal));
70  }
71 
72  void initWithPointer(PointerTy PtrVal) & {
73    Value = Info::updatePointer(0, PtrVal);
74  }
75 
76  void setPointerAndInt(PointerTy PtrVal, IntType IntVal) & {
77    Value = Info::updateInt(Info::updatePointer(0, PtrVal),
78                            static_cast<intptr_t>(IntVal));
79  }
80 
81  PointerTy const *getAddrOfPointer() const {
82    return const_cast<PointerIntPair *>(this)->getAddrOfPointer();
83  }
84 
85  PointerTy *getAddrOfPointer() {
86    assert(Value == reinterpret_cast<intptr_t>(getPointer()) &&(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 88, __extension__
 __PRETTY_FUNCTION__))
87           "Can only return the address if IntBits is cleared and "(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 88, __extension__
 __PRETTY_FUNCTION__))
88           "PtrTraits doesn't change the pointer")(static_cast <bool> (Value == reinterpret_cast<intptr_t
>(getPointer()) && "Can only return the address if IntBits is cleared and "
 "PtrTraits doesn't change the pointer") ? void (0) : __assert_fail
 ("Value == reinterpret_cast<intptr_t>(getPointer()) && \"Can only return the address if IntBits is cleared and \" \"PtrTraits doesn't change the pointer\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 88, __extension__
 __PRETTY_FUNCTION__));
89    return reinterpret_cast<PointerTy *>(&Value);
90  }
91 
92  void *getOpaqueValue() const { return reinterpret_cast<void *>(Value); }
93 
94  void setFromOpaqueValue(void *Val) & {
95    Value = reinterpret_cast<intptr_t>(Val);
96  }
97 
98  static PointerIntPair getFromOpaqueValue(void *V) {
99    PointerIntPair P;
100    P.setFromOpaqueValue(V);
101    return P;
102  }
103 
104  // Allow PointerIntPairs to be created from const void * if and only if the
105  // pointer type could be created from a const void *.
106  static PointerIntPair getFromOpaqueValue(const void *V) {
107    (void)PtrTraits::getFromVoidPointer(V);
108    return getFromOpaqueValue(const_cast<void *>(V));
109  }
110 
111  bool operator==(const PointerIntPair &RHS) const {
112    return Value == RHS.Value;
113  }
114 
115  bool operator!=(const PointerIntPair &RHS) const {
116    return Value != RHS.Value;
117  }
118 
119  bool operator<(const PointerIntPair &RHS) const { return Value < RHS.Value; }
120  bool operator>(const PointerIntPair &RHS) const { return Value > RHS.Value; }
121 
122  bool operator<=(const PointerIntPair &RHS) const {
123    return Value <= RHS.Value;
124  }
125 
126  bool operator>=(const PointerIntPair &RHS) const {
127    return Value >= RHS.Value;
128  }
129};
130 
131// Specialize is_trivially_copyable to avoid limitation of llvm::is_trivially_copyable
132// when compiled with gcc 4.9.
133template <typename PointerTy, unsigned IntBits, typename IntType,
134          typename PtrTraits,
135          typename Info>
136struct is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>> : std::true_type {
137#ifdef HAVE_STD_IS_TRIVIALLY_COPYABLE
138  static_assert(std::is_trivially_copyable<PointerIntPair<PointerTy, IntBits, IntType, PtrTraits, Info>>::value,
139                "inconsistent behavior between llvm:: and std:: implementation of is_trivially_copyable");
140#endif
141};
142 
143 
144template <typename PointerT, unsigned IntBits, typename PtrTraits>
145struct PointerIntPairInfo {
146  static_assert(PtrTraits::NumLowBitsAvailable <
147                    std::numeric_limits<uintptr_t>::digits,
148                "cannot use a pointer type that has all bits free");
149  static_assert(IntBits <= PtrTraits::NumLowBitsAvailable,
150                "PointerIntPair with integer size too large for pointer");
151  enum MaskAndShiftConstants : uintptr_t {
152    /// PointerBitMask - The bits that come from the pointer.
153    PointerBitMask =
154        ~(uintptr_t)(((intptr_t)1 << PtrTraits::NumLowBitsAvailable) - 1),
155 
156    /// IntShift - The number of low bits that we reserve for other uses, and
157    /// keep zero.
158    IntShift = (uintptr_t)PtrTraits::NumLowBitsAvailable - IntBits,
159 
160    /// IntMask - This is the unshifted mask for valid bits of the int type.
161    IntMask = (uintptr_t)(((intptr_t)1 << IntBits) - 1),
162 
163    // ShiftedIntMask - This is the bits for the integer shifted in place.
164    ShiftedIntMask = (uintptr_t)(IntMask << IntShift)
165  };
166 
167  static PointerT getPointer(intptr_t Value) {
168    return PtrTraits::getFromVoidPointer(
41
←
Calling 'PointerLikeTypeTraits::getFromVoidPointer'→
44
←
Returning from 'PointerLikeTypeTraits::getFromVoidPointer'→
45
←
Returning pointer→
169        reinterpret_cast<void *>(Value & PointerBitMask));
170  }
171 
172  static intptr_t getInt(intptr_t Value) {
173    return (Value >> IntShift) & IntMask;
174  }
175 
176  static intptr_t updatePointer(intptr_t OrigValue, PointerT Ptr) {
177    intptr_t PtrWord =
178        reinterpret_cast<intptr_t>(PtrTraits::getAsVoidPointer(Ptr));
179    assert((PtrWord & ~PointerBitMask) == 0 &&(static_cast <bool> ((PtrWord & ~PointerBitMask) ==
 0 && "Pointer is not sufficiently aligned") ? void (
0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 180, __extension__
 __PRETTY_FUNCTION__))
180           "Pointer is not sufficiently aligned")(static_cast <bool> ((PtrWord & ~PointerBitMask) ==
 0 && "Pointer is not sufficiently aligned") ? void (
0) : __assert_fail ("(PtrWord & ~PointerBitMask) == 0 && \"Pointer is not sufficiently aligned\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 180, __extension__
 __PRETTY_FUNCTION__));
181    // Preserve all low bits, just update the pointer.
182    return PtrWord | (OrigValue & ~PointerBitMask);
183  }
184 
185  static intptr_t updateInt(intptr_t OrigValue, intptr_t Int) {
186    intptr_t IntWord = static_cast<intptr_t>(Int);
187    assert((IntWord & ~IntMask) == 0 && "Integer too large for field")(static_cast <bool> ((IntWord & ~IntMask) == 0 &&
 "Integer too large for field") ? void (0) : __assert_fail ("(IntWord & ~IntMask) == 0 && \"Integer too large for field\""
, "llvm/include/llvm/ADT/PointerIntPair.h", 187, __extension__
 __PRETTY_FUNCTION__));
188 
189    // Preserve all bits other than the ones we are updating.
190    return (OrigValue & ~ShiftedIntMask) | IntWord << IntShift;
191  }
192};
193 
194// Provide specialization of DenseMapInfo for PointerIntPair.
195template <typename PointerTy, unsigned IntBits, typename IntType>
196struct DenseMapInfo<PointerIntPair<PointerTy, IntBits, IntType>, void> {
197  using Ty = PointerIntPair<PointerTy, IntBits, IntType>;
198 
199  static Ty getEmptyKey() {
200    uintptr_t Val = static_cast<uintptr_t>(-1);
201    Val <<= PointerLikeTypeTraits<Ty>::NumLowBitsAvailable;
202    return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val));
203  }
204 
205  static Ty getTombstoneKey() {
206    uintptr_t Val = static_cast<uintptr_t>(-2);
207    Val <<= PointerLikeTypeTraits<PointerTy>::NumLowBitsAvailable;
208    return Ty::getFromOpaqueValue(reinterpret_cast<void *>(Val));
209  }
210 
211  static unsigned getHashValue(Ty V) {
212    uintptr_t IV = reinterpret_cast<uintptr_t>(V.getOpaqueValue());
213    return unsigned(IV) ^ unsigned(IV >> 9);
214  }
215 
216  static bool isEqual(const Ty &LHS, const Ty &RHS) { return LHS == RHS; }
217};
218 
219// Teach SmallPtrSet that PointerIntPair is "basically a pointer".
220template <typename PointerTy, unsigned IntBits, typename IntType,
221          typename PtrTraits>
222struct PointerLikeTypeTraits<
223    PointerIntPair<PointerTy, IntBits, IntType, PtrTraits>> {
224  static inline void *
225  getAsVoidPointer(const PointerIntPair<PointerTy, IntBits, IntType> &P) {
226    return P.getOpaqueValue();
227  }
228 
229  static inline PointerIntPair<PointerTy, IntBits, IntType>
230  getFromVoidPointer(void *P) {
231    return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
232  }
233 
234  static inline PointerIntPair<PointerTy, IntBits, IntType>
235  getFromVoidPointer(const void *P) {
236    return PointerIntPair<PointerTy, IntBits, IntType>::getFromOpaqueValue(P);
237  }
238 
239  static constexpr int NumLowBitsAvailable =
240      PtrTraits::NumLowBitsAvailable - IntBits;
241};
242 
243} // end namespace llvm
244 
245#endif // LLVM_ADT_POINTERINTPAIR_H

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/build/llvm-toolchain-snapshot-15~++20220320100729+487629cc61b5/llvm/include/llvm/Support/PointerLikeTypeTraits.h

1//===- llvm/Support/PointerLikeTypeTraits.h - Pointer Traits ----*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the PointerLikeTypeTraits class.  This allows data
10// structures to reason about pointers and other things that are pointer sized.
11//
12//===----------------------------------------------------------------------===//
13 
14#ifndef LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
15#define LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
16 
17#include "llvm/Support/DataTypes.h"
18#include <cassert>
19#include <type_traits>
20 
21namespace llvm {
22 
23/// A traits type that is used to handle pointer types and things that are just
24/// wrappers for pointers as a uniform entity.
25template <typename T> struct PointerLikeTypeTraits;
26 
27namespace detail {
28/// A tiny meta function to compute the log2 of a compile time constant.
29template <size_t N>
30struct ConstantLog2
31    : std::integral_constant<size_t, ConstantLog2<N / 2>::value + 1> {};
32template <> struct ConstantLog2<1> : std::integral_constant<size_t, 0> {};
33 
34// Provide a trait to check if T is pointer-like.
35template <typename T, typename U = void> struct HasPointerLikeTypeTraits {
36  static const bool value = false;
37};
38 
39// sizeof(T) is valid only for a complete T.
40template <typename T>
41struct HasPointerLikeTypeTraits<
42    T, decltype((sizeof(PointerLikeTypeTraits<T>) + sizeof(T)), void())> {
43  static const bool value = true;
44};
45 
46template <typename T> struct IsPointerLike {
47  static const bool value = HasPointerLikeTypeTraits<T>::value;
48};
49 
50template <typename T> struct IsPointerLike<T *> {
51  static const bool value = true;
52};
53} // namespace detail
54 
55// Provide PointerLikeTypeTraits for non-cvr pointers.
56template <typename T> struct PointerLikeTypeTraits<T *> {
57  static inline void *getAsVoidPointer(T *P) { return P; }
58  static inline T *getFromVoidPointer(void *P) { return static_cast<T *>(P); }
59 
60  static constexpr int NumLowBitsAvailable =
61      detail::ConstantLog2<alignof(T)>::value;
62};
63 
64template <> struct PointerLikeTypeTraits<void *> {
65  static inline void *getAsVoidPointer(void *P) { return P; }
66  static inline void *getFromVoidPointer(void *P) { return P; }
67 
68  /// Note, we assume here that void* is related to raw malloc'ed memory and
69  /// that malloc returns objects at least 4-byte aligned. However, this may be
70  /// wrong, or pointers may be from something other than malloc. In this case,
71  /// you should specify a real typed pointer or avoid this template.
72  ///
73  /// All clients should use assertions to do a run-time check to ensure that
74  /// this is actually true.
75  static constexpr int NumLowBitsAvailable = 2;
76};
77 
78// Provide PointerLikeTypeTraits for const things.
79template <typename T> struct PointerLikeTypeTraits<const T> {
80  typedef PointerLikeTypeTraits<T> NonConst;
81 
82  static inline const void *getAsVoidPointer(const T P) {
83    return NonConst::getAsVoidPointer(P);
84  }
85  static inline const T getFromVoidPointer(const void *P) {
86    return NonConst::getFromVoidPointer(const_cast<void *>(P));
87  }
88  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
89};
90 
91// Provide PointerLikeTypeTraits for const pointers.
92template <typename T> struct PointerLikeTypeTraits<const T *> {
93  typedef PointerLikeTypeTraits<T *> NonConst;
94 
95  static inline const void *getAsVoidPointer(const T *P) {
96    return NonConst::getAsVoidPointer(const_cast<T *>(P));
97  }
98  static inline const T *getFromVoidPointer(const void *P) {
99    return NonConst::getFromVoidPointer(const_cast<void *>(P));
42
←
Passing value via 1st parameter 'P'→
43
←
Returning pointer→
100  }
101  static constexpr int NumLowBitsAvailable = NonConst::NumLowBitsAvailable;
102};
103 
104// Provide PointerLikeTypeTraits for uintptr_t.
105template <> struct PointerLikeTypeTraits<uintptr_t> {
106  static inline void *getAsVoidPointer(uintptr_t P) {
107    return reinterpret_cast<void *>(P);
108  }
109  static inline uintptr_t getFromVoidPointer(void *P) {
110    return reinterpret_cast<uintptr_t>(P);
111  }
112  // No bits are available!
113  static constexpr int NumLowBitsAvailable = 0;
114};
115 
116/// Provide suitable custom traits struct for function pointers.
117///
118/// Function pointers can't be directly given these traits as functions can't
119/// have their alignment computed with `alignof` and we need different casting.
120///
121/// To rely on higher alignment for a specialized use, you can provide a
122/// customized form of this template explicitly with higher alignment, and
123/// potentially use alignment attributes on functions to satisfy that.
124template <int Alignment, typename FunctionPointerT>
125struct FunctionPointerLikeTypeTraits {
126  static constexpr int NumLowBitsAvailable =
127      detail::ConstantLog2<Alignment>::value;
128  static inline void *getAsVoidPointer(FunctionPointerT P) {
129    assert((reinterpret_cast<uintptr_t>(P) &(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "llvm/include/llvm/Support/PointerLikeTypeTraits.h", 131, __extension__
 __PRETTY_FUNCTION__))
130            ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 &&(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "llvm/include/llvm/Support/PointerLikeTypeTraits.h", 131, __extension__
 __PRETTY_FUNCTION__))
131           "Alignment not satisfied for an actual function pointer!")(static_cast <bool> ((reinterpret_cast<uintptr_t>
(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0
 && "Alignment not satisfied for an actual function pointer!"
) ? void (0) : __assert_fail ("(reinterpret_cast<uintptr_t>(P) & ~((uintptr_t)-1 << NumLowBitsAvailable)) == 0 && \"Alignment not satisfied for an actual function pointer!\""
, "llvm/include/llvm/Support/PointerLikeTypeTraits.h", 131, __extension__
 __PRETTY_FUNCTION__));
132    return reinterpret_cast<void *>(P);
133  }
134  static inline FunctionPointerT getFromVoidPointer(void *P) {
135    return reinterpret_cast<FunctionPointerT>(P);
136  }
137};
138 
139/// Provide a default specialization for function pointers that assumes 4-byte
140/// alignment.
141///
142/// We assume here that functions used with this are always at least 4-byte
143/// aligned. This means that, for example, thumb functions won't work or systems
144/// with weird unaligned function pointers won't work. But all practical systems
145/// we support satisfy this requirement.
146template <typename ReturnT, typename... ParamTs>
147struct PointerLikeTypeTraits<ReturnT (*)(ParamTs...)>
148    : FunctionPointerLikeTypeTraits<4, ReturnT (*)(ParamTs...)> {};
149 
150} // end namespace llvm
151 
152#endif