1 files changed, 0 insertions, 1638 deletions

diff --git a/contrib/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp b/contrib/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp
deleted file mode 100644
index 497652e85b47..000000000000
--- a/contrib/llvm/tools/clang/lib/CodeGen/BackendUtil.cpp
+++ /dev/null
@@ -1,1638 +0,0 @@
-//===--- BackendUtil.cpp - LLVM Backend Utilities -------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/CodeGen/BackendUtil.h"
-#include "clang/Basic/CodeGenOptions.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/TargetOptions.h"
-#include "clang/Frontend/FrontendDiagnostic.h"
-#include "clang/Frontend/Utils.h"
-#include "clang/Lex/HeaderSearchOptions.h"
-#include "llvm/ADT/SmallSet.h"
-#include "llvm/ADT/StringExtras.h"
-#include "llvm/ADT/StringSwitch.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/Analysis/TargetLibraryInfo.h"
-#include "llvm/Analysis/TargetTransformInfo.h"
-#include "llvm/Bitcode/BitcodeReader.h"
-#include "llvm/Bitcode/BitcodeWriter.h"
-#include "llvm/Bitcode/BitcodeWriterPass.h"
-#include "llvm/CodeGen/RegAllocRegistry.h"
-#include "llvm/CodeGen/SchedulerRegistry.h"
-#include "llvm/CodeGen/TargetSubtargetInfo.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/IRPrintingPasses.h"
-#include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/ModuleSummaryIndex.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/LTO/LTOBackend.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/SubtargetFeature.h"
-#include "llvm/Passes/PassBuilder.h"
-#include "llvm/Passes/PassPlugin.h"
-#include "llvm/Support/BuryPointer.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/TimeProfiler.h"
-#include "llvm/Support/Timer.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetOptions.h"
-#include "llvm/Transforms/Coroutines.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/IPO/AlwaysInliner.h"
-#include "llvm/Transforms/IPO/PassManagerBuilder.h"
-#include "llvm/Transforms/IPO/ThinLTOBitcodeWriter.h"
-#include "llvm/Transforms/InstCombine/InstCombine.h"
-#include "llvm/Transforms/Instrumentation.h"
-#include "llvm/Transforms/Instrumentation/AddressSanitizer.h"
-#include "llvm/Transforms/Instrumentation/BoundsChecking.h"
-#include "llvm/Transforms/Instrumentation/GCOVProfiler.h"
-#include "llvm/Transforms/Instrumentation/HWAddressSanitizer.h"
-#include "llvm/Transforms/Instrumentation/InstrProfiling.h"
-#include "llvm/Transforms/Instrumentation/MemorySanitizer.h"
-#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
-#include "llvm/Transforms/ObjCARC.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Scalar/GVN.h"
-#include "llvm/Transforms/Utils.h"
-#include "llvm/Transforms/Utils/CanonicalizeAliases.h"
-#include "llvm/Transforms/Utils/EntryExitInstrumenter.h"
-#include "llvm/Transforms/Utils/NameAnonGlobals.h"
-#include "llvm/Transforms/Utils/SymbolRewriter.h"
-#include <memory>
-using namespace clang;
-using namespace llvm;
-
-namespace {
-
-// Default filename used for profile generation.
-static constexpr StringLiteral DefaultProfileGenName = "default_%m.profraw";
-
-class EmitAssemblyHelper {
-  DiagnosticsEngine &Diags;
-  const HeaderSearchOptions &HSOpts;
-  const CodeGenOptions &CodeGenOpts;
-  const clang::TargetOptions &TargetOpts;
-  const LangOptions &LangOpts;
-  Module *TheModule;
-
-  Timer CodeGenerationTime;
-
-  std::unique_ptr<raw_pwrite_stream> OS;
-
-  TargetIRAnalysis getTargetIRAnalysis() const {
-    if (TM)
-      return TM->getTargetIRAnalysis();
-
-    return TargetIRAnalysis();
-  }
-
-  void CreatePasses(legacy::PassManager &MPM, legacy::FunctionPassManager &FPM);
-
-  /// Generates the TargetMachine.
-  /// Leaves TM unchanged if it is unable to create the target machine.
-  /// Some of our clang tests specify triples which are not built
-  /// into clang. This is okay because these tests check the generated
-  /// IR, and they require DataLayout which depends on the triple.
-  /// In this case, we allow this method to fail and not report an error.
-  /// When MustCreateTM is used, we print an error if we are unable to load
-  /// the requested target.
-  void CreateTargetMachine(bool MustCreateTM);
-
-  /// Add passes necessary to emit assembly or LLVM IR.
-  ///
-  /// \return True on success.
-  bool AddEmitPasses(legacy::PassManager &CodeGenPasses, BackendAction Action,
-                     raw_pwrite_stream &OS, raw_pwrite_stream *DwoOS);
-
-  std::unique_ptr<llvm::ToolOutputFile> openOutputFile(StringRef Path) {
-    std::error_code EC;
-    auto F = llvm::make_unique<llvm::ToolOutputFile>(Path, EC,
-                                                     llvm::sys::fs::F_None);
-    if (EC) {
-      Diags.Report(diag::err_fe_unable_to_open_output) << Path << EC.message();
-      F.reset();
-    }
-    return F;
-  }
-
-public:
-  EmitAssemblyHelper(DiagnosticsEngine &_Diags,
-                     const HeaderSearchOptions &HeaderSearchOpts,
-                     const CodeGenOptions &CGOpts,
-                     const clang::TargetOptions &TOpts,
-                     const LangOptions &LOpts, Module *M)
-      : Diags(_Diags), HSOpts(HeaderSearchOpts), CodeGenOpts(CGOpts),
-        TargetOpts(TOpts), LangOpts(LOpts), TheModule(M),
-        CodeGenerationTime("codegen", "Code Generation Time") {}
-
-  ~EmitAssemblyHelper() {
-    if (CodeGenOpts.DisableFree)
-      BuryPointer(std::move(TM));
-  }
-
-  std::unique_ptr<TargetMachine> TM;
-
-  void EmitAssembly(BackendAction Action,
-                    std::unique_ptr<raw_pwrite_stream> OS);
-
-  void EmitAssemblyWithNewPassManager(BackendAction Action,
-                                      std::unique_ptr<raw_pwrite_stream> OS);
-};
-
-// We need this wrapper to access LangOpts and CGOpts from extension functions
-// that we add to the PassManagerBuilder.
-class PassManagerBuilderWrapper : public PassManagerBuilder {
-public:
-  PassManagerBuilderWrapper(const Triple &TargetTriple,
-                            const CodeGenOptions &CGOpts,
-                            const LangOptions &LangOpts)
-      : PassManagerBuilder(), TargetTriple(TargetTriple), CGOpts(CGOpts),
-        LangOpts(LangOpts) {}
-  const Triple &getTargetTriple() const { return TargetTriple; }
-  const CodeGenOptions &getCGOpts() const { return CGOpts; }
-  const LangOptions &getLangOpts() const { return LangOpts; }
-
-private:
-  const Triple &TargetTriple;
-  const CodeGenOptions &CGOpts;
-  const LangOptions &LangOpts;
-};
-}
-
-static void addObjCARCAPElimPass(const PassManagerBuilder &Builder, PassManagerBase &PM) {
-  if (Builder.OptLevel > 0)
-    PM.add(createObjCARCAPElimPass());
-}
-
-static void addObjCARCExpandPass(const PassManagerBuilder &Builder, PassManagerBase &PM) {
-  if (Builder.OptLevel > 0)
-    PM.add(createObjCARCExpandPass());
-}
-
-static void addObjCARCOptPass(const PassManagerBuilder &Builder, PassManagerBase &PM) {
-  if (Builder.OptLevel > 0)
-    PM.add(createObjCARCOptPass());
-}
-
-static void addAddDiscriminatorsPass(const PassManagerBuilder &Builder,
-                                     legacy::PassManagerBase &PM) {
-  PM.add(createAddDiscriminatorsPass());
-}
-
-static void addBoundsCheckingPass(const PassManagerBuilder &Builder,
-                                  legacy::PassManagerBase &PM) {
-  PM.add(createBoundsCheckingLegacyPass());
-}
-
-static void addSanitizerCoveragePass(const PassManagerBuilder &Builder,
-                                     legacy::PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  SanitizerCoverageOptions Opts;
-  Opts.CoverageType =
-      static_cast<SanitizerCoverageOptions::Type>(CGOpts.SanitizeCoverageType);
-  Opts.IndirectCalls = CGOpts.SanitizeCoverageIndirectCalls;
-  Opts.TraceBB = CGOpts.SanitizeCoverageTraceBB;
-  Opts.TraceCmp = CGOpts.SanitizeCoverageTraceCmp;
-  Opts.TraceDiv = CGOpts.SanitizeCoverageTraceDiv;
-  Opts.TraceGep = CGOpts.SanitizeCoverageTraceGep;
-  Opts.Use8bitCounters = CGOpts.SanitizeCoverage8bitCounters;
-  Opts.TracePC = CGOpts.SanitizeCoverageTracePC;
-  Opts.TracePCGuard = CGOpts.SanitizeCoverageTracePCGuard;
-  Opts.NoPrune = CGOpts.SanitizeCoverageNoPrune;
-  Opts.Inline8bitCounters = CGOpts.SanitizeCoverageInline8bitCounters;
-  Opts.PCTable = CGOpts.SanitizeCoveragePCTable;
-  Opts.StackDepth = CGOpts.SanitizeCoverageStackDepth;
-  PM.add(createSanitizerCoverageModulePass(Opts));
-}
-
-// Check if ASan should use GC-friendly instrumentation for globals.
-// First of all, there is no point if -fdata-sections is off (expect for MachO,
-// where this is not a factor). Also, on ELF this feature requires an assembler
-// extension that only works with -integrated-as at the moment.
-static bool asanUseGlobalsGC(const Triple &T, const CodeGenOptions &CGOpts) {
-  if (!CGOpts.SanitizeAddressGlobalsDeadStripping)
-    return false;
-  switch (T.getObjectFormat()) {
-  case Triple::MachO:
-  case Triple::COFF:
-    return true;
-  case Triple::ELF:
-    return CGOpts.DataSections && !CGOpts.DisableIntegratedAS;
-  default:
-    return false;
-  }
-}
-
-static void addAddressSanitizerPasses(const PassManagerBuilder &Builder,
-                                      legacy::PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const Triple &T = BuilderWrapper.getTargetTriple();
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  bool Recover = CGOpts.SanitizeRecover.has(SanitizerKind::Address);
-  bool UseAfterScope = CGOpts.SanitizeAddressUseAfterScope;
-  bool UseOdrIndicator = CGOpts.SanitizeAddressUseOdrIndicator;
-  bool UseGlobalsGC = asanUseGlobalsGC(T, CGOpts);
-  PM.add(createAddressSanitizerFunctionPass(/*CompileKernel*/ false, Recover,
-                                            UseAfterScope));
-  PM.add(createModuleAddressSanitizerLegacyPassPass(
-      /*CompileKernel*/ false, Recover, UseGlobalsGC, UseOdrIndicator));
-}
-
-static void addKernelAddressSanitizerPasses(const PassManagerBuilder &Builder,
-                                            legacy::PassManagerBase &PM) {
-  PM.add(createAddressSanitizerFunctionPass(
-      /*CompileKernel*/ true, /*Recover*/ true, /*UseAfterScope*/ false));
-  PM.add(createModuleAddressSanitizerLegacyPassPass(
-      /*CompileKernel*/ true, /*Recover*/ true, /*UseGlobalsGC*/ true,
-      /*UseOdrIndicator*/ false));
-}
-
-static void addHWAddressSanitizerPasses(const PassManagerBuilder &Builder,
-                                            legacy::PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper &>(Builder);
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  bool Recover = CGOpts.SanitizeRecover.has(SanitizerKind::HWAddress);
-  PM.add(
-      createHWAddressSanitizerLegacyPassPass(/*CompileKernel*/ false, Recover));
-}
-
-static void addKernelHWAddressSanitizerPasses(const PassManagerBuilder &Builder,
-                                            legacy::PassManagerBase &PM) {
-  PM.add(createHWAddressSanitizerLegacyPassPass(
-      /*CompileKernel*/ true, /*Recover*/ true));
-}
-
-static void addGeneralOptsForMemorySanitizer(const PassManagerBuilder &Builder,
-                                             legacy::PassManagerBase &PM,
-                                             bool CompileKernel) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  int TrackOrigins = CGOpts.SanitizeMemoryTrackOrigins;
-  bool Recover = CGOpts.SanitizeRecover.has(SanitizerKind::Memory);
-  PM.add(createMemorySanitizerLegacyPassPass(
-      MemorySanitizerOptions{TrackOrigins, Recover, CompileKernel}));
-
-  // MemorySanitizer inserts complex instrumentation that mostly follows
-  // the logic of the original code, but operates on "shadow" values.
-  // It can benefit from re-running some general purpose optimization passes.
-  if (Builder.OptLevel > 0) {
-    PM.add(createEarlyCSEPass());
-    PM.add(createReassociatePass());
-    PM.add(createLICMPass());
-    PM.add(createGVNPass());
-    PM.add(createInstructionCombiningPass());
-    PM.add(createDeadStoreEliminationPass());
-  }
-}
-
-static void addMemorySanitizerPass(const PassManagerBuilder &Builder,
-                                   legacy::PassManagerBase &PM) {
-  addGeneralOptsForMemorySanitizer(Builder, PM, /*CompileKernel*/ false);
-}
-
-static void addKernelMemorySanitizerPass(const PassManagerBuilder &Builder,
-                                         legacy::PassManagerBase &PM) {
-  addGeneralOptsForMemorySanitizer(Builder, PM, /*CompileKernel*/ true);
-}
-
-static void addThreadSanitizerPass(const PassManagerBuilder &Builder,
-                                   legacy::PassManagerBase &PM) {
-  PM.add(createThreadSanitizerLegacyPassPass());
-}
-
-static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder,
-                                     legacy::PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const LangOptions &LangOpts = BuilderWrapper.getLangOpts();
-  PM.add(createDataFlowSanitizerPass(LangOpts.SanitizerBlacklistFiles));
-}
-
-static TargetLibraryInfoImpl *createTLII(llvm::Triple &TargetTriple,
-                                         const CodeGenOptions &CodeGenOpts) {
-  TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple);
-  if (!CodeGenOpts.SimplifyLibCalls)
-    TLII->disableAllFunctions();
-  else {
-    // Disable individual libc/libm calls in TargetLibraryInfo.
-    LibFunc F;
-    for (auto &FuncName : CodeGenOpts.getNoBuiltinFuncs())
-      if (TLII->getLibFunc(FuncName, F))
-        TLII->setUnavailable(F);
-  }
-
-  switch (CodeGenOpts.getVecLib()) {
-  case CodeGenOptions::Accelerate:
-    TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::Accelerate);
-    break;
-  case CodeGenOptions::MASSV:
-    TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::MASSV);
-    break;    
-  case CodeGenOptions::SVML:
-    TLII->addVectorizableFunctionsFromVecLib(TargetLibraryInfoImpl::SVML);
-    break;
-  default:
-    break;
-  }
-  return TLII;
-}
-
-static void addSymbolRewriterPass(const CodeGenOptions &Opts,
-                                  legacy::PassManager *MPM) {
-  llvm::SymbolRewriter::RewriteDescriptorList DL;
-
-  llvm::SymbolRewriter::RewriteMapParser MapParser;
-  for (const auto &MapFile : Opts.RewriteMapFiles)
-    MapParser.parse(MapFile, &DL);
-
-  MPM->add(createRewriteSymbolsPass(DL));
-}
-
-static CodeGenOpt::Level getCGOptLevel(const CodeGenOptions &CodeGenOpts) {
-  switch (CodeGenOpts.OptimizationLevel) {
-  default:
-    llvm_unreachable("Invalid optimization level!");
-  case 0:
-    return CodeGenOpt::None;
-  case 1:
-    return CodeGenOpt::Less;
-  case 2:
-    return CodeGenOpt::Default; // O2/Os/Oz
-  case 3:
-    return CodeGenOpt::Aggressive;
-  }
-}
-
-static Optional<llvm::CodeModel::Model>
-getCodeModel(const CodeGenOptions &CodeGenOpts) {
-  unsigned CodeModel = llvm::StringSwitch<unsigned>(CodeGenOpts.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)
-                           .Case("default", ~1u)
-                           .Default(~0u);
-  assert(CodeModel != ~0u && "invalid code model!");
-  if (CodeModel == ~1u)
-    return None;
-  return static_cast<llvm::CodeModel::Model>(CodeModel);
-}
-
-static TargetMachine::CodeGenFileType getCodeGenFileType(BackendAction Action) {
-  if (Action == Backend_EmitObj)
-    return TargetMachine::CGFT_ObjectFile;
-  else if (Action == Backend_EmitMCNull)
-    return TargetMachine::CGFT_Null;
-  else {
-    assert(Action == Backend_EmitAssembly && "Invalid action!");
-    return TargetMachine::CGFT_AssemblyFile;
-  }
-}
-
-static void initTargetOptions(llvm::TargetOptions &Options,
-                              const CodeGenOptions &CodeGenOpts,
-                              const clang::TargetOptions &TargetOpts,
-                              const LangOptions &LangOpts,
-                              const HeaderSearchOptions &HSOpts) {
-  Options.ThreadModel =
-      llvm::StringSwitch<llvm::ThreadModel::Model>(CodeGenOpts.ThreadModel)
-          .Case("posix", llvm::ThreadModel::POSIX)
-          .Case("single", llvm::ThreadModel::Single);
-
-  // Set float ABI type.
-  assert((CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp" ||
-          CodeGenOpts.FloatABI == "hard" || CodeGenOpts.FloatABI.empty()) &&
-         "Invalid Floating Point ABI!");
-  Options.FloatABIType =
-      llvm::StringSwitch<llvm::FloatABI::ABIType>(CodeGenOpts.FloatABI)
-          .Case("soft", llvm::FloatABI::Soft)
-          .Case("softfp", llvm::FloatABI::Soft)
-          .Case("hard", llvm::FloatABI::Hard)
-          .Default(llvm::FloatABI::Default);
-
-  // Set FP fusion mode.
-  switch (LangOpts.getDefaultFPContractMode()) {
-  case LangOptions::FPC_Off:
-    // Preserve any contraction performed by the front-end.  (Strict performs
-    // splitting of the muladd intrinsic in the backend.)
-    Options.AllowFPOpFusion = llvm::FPOpFusion::Standard;
-    break;
-  case LangOptions::FPC_On:
-    Options.AllowFPOpFusion = llvm::FPOpFusion::Standard;
-    break;
-  case LangOptions::FPC_Fast:
-    Options.AllowFPOpFusion = llvm::FPOpFusion::Fast;
-    break;
-  }
-
-  Options.UseInitArray = CodeGenOpts.UseInitArray;
-  Options.DisableIntegratedAS = CodeGenOpts.DisableIntegratedAS;
-  Options.CompressDebugSections = CodeGenOpts.getCompressDebugSections();
-  Options.RelaxELFRelocations = CodeGenOpts.RelaxELFRelocations;
-
-  // Set EABI version.
-  Options.EABIVersion = TargetOpts.EABIVersion;
-
-  if (LangOpts.SjLjExceptions)
-    Options.ExceptionModel = llvm::ExceptionHandling::SjLj;
-  if (LangOpts.SEHExceptions)
-    Options.ExceptionModel = llvm::ExceptionHandling::WinEH;
-  if (LangOpts.DWARFExceptions)
-    Options.ExceptionModel = llvm::ExceptionHandling::DwarfCFI;
-
-  Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath;
-  Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath;
-  Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
-  Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath;
-  Options.StackAlignmentOverride = CodeGenOpts.StackAlignment;
-  Options.FunctionSections = CodeGenOpts.FunctionSections;
-  Options.DataSections = CodeGenOpts.DataSections;
-  Options.UniqueSectionNames = CodeGenOpts.UniqueSectionNames;
-  Options.EmulatedTLS = CodeGenOpts.EmulatedTLS;
-  Options.ExplicitEmulatedTLS = CodeGenOpts.ExplicitEmulatedTLS;
-  Options.DebuggerTuning = CodeGenOpts.getDebuggerTuning();
-  Options.EmitStackSizeSection = CodeGenOpts.StackSizeSection;
-  Options.EmitAddrsig = CodeGenOpts.Addrsig;
-  Options.EnableDebugEntryValues = CodeGenOpts.EnableDebugEntryValues;
-
-  Options.MCOptions.SplitDwarfFile = CodeGenOpts.SplitDwarfFile;
-  Options.MCOptions.MCRelaxAll = CodeGenOpts.RelaxAll;
-  Options.MCOptions.MCSaveTempLabels = CodeGenOpts.SaveTempLabels;
-  Options.MCOptions.MCUseDwarfDirectory = !CodeGenOpts.NoDwarfDirectoryAsm;
-  Options.MCOptions.MCNoExecStack = CodeGenOpts.NoExecStack;
-  Options.MCOptions.MCIncrementalLinkerCompatible =
-      CodeGenOpts.IncrementalLinkerCompatible;
-  Options.MCOptions.MCPIECopyRelocations = CodeGenOpts.PIECopyRelocations;
-  Options.MCOptions.MCFatalWarnings = CodeGenOpts.FatalWarnings;
-  Options.MCOptions.AsmVerbose = CodeGenOpts.AsmVerbose;
-  Options.MCOptions.PreserveAsmComments = CodeGenOpts.PreserveAsmComments;
-  Options.MCOptions.ABIName = TargetOpts.ABI;
-  for (const auto &Entry : HSOpts.UserEntries)
-    if (!Entry.IsFramework &&
-        (Entry.Group == frontend::IncludeDirGroup::Quoted ||
-         Entry.Group == frontend::IncludeDirGroup::Angled ||
-         Entry.Group == frontend::IncludeDirGroup::System))
-      Options.MCOptions.IASSearchPaths.push_back(
-          Entry.IgnoreSysRoot ? Entry.Path : HSOpts.Sysroot + Entry.Path);
-}
-static Optional<GCOVOptions> getGCOVOptions(const CodeGenOptions &CodeGenOpts) {
-  if (CodeGenOpts.DisableGCov)
-    return None;
-  if (!CodeGenOpts.EmitGcovArcs && !CodeGenOpts.EmitGcovNotes)
-    return None;
-  // Not using 'GCOVOptions::getDefault' allows us to avoid exiting if
-  // LLVM's -default-gcov-version flag is set to something invalid.
-  GCOVOptions Options;
-  Options.EmitNotes = CodeGenOpts.EmitGcovNotes;
-  Options.EmitData = CodeGenOpts.EmitGcovArcs;
-  llvm::copy(CodeGenOpts.CoverageVersion, std::begin(Options.Version));
-  Options.UseCfgChecksum = CodeGenOpts.CoverageExtraChecksum;
-  Options.NoRedZone = CodeGenOpts.DisableRedZone;
-  Options.FunctionNamesInData = !CodeGenOpts.CoverageNoFunctionNamesInData;
-  Options.Filter = CodeGenOpts.ProfileFilterFiles;
-  Options.Exclude = CodeGenOpts.ProfileExcludeFiles;
-  Options.ExitBlockBeforeBody = CodeGenOpts.CoverageExitBlockBeforeBody;
-  return Options;
-}
-
-static Optional<InstrProfOptions>
-getInstrProfOptions(const CodeGenOptions &CodeGenOpts,
-                    const LangOptions &LangOpts) {
-  if (!CodeGenOpts.hasProfileClangInstr())
-    return None;
-  InstrProfOptions Options;
-  Options.NoRedZone = CodeGenOpts.DisableRedZone;
-  Options.InstrProfileOutput = CodeGenOpts.InstrProfileOutput;
-
-  // TODO: Surface the option to emit atomic profile counter increments at
-  // the driver level.
-  Options.Atomic = LangOpts.Sanitize.has(SanitizerKind::Thread);
-  return Options;
-}
-
-void EmitAssemblyHelper::CreatePasses(legacy::PassManager &MPM,
-                                      legacy::FunctionPassManager &FPM) {
-  // Handle disabling of all LLVM passes, where we want to preserve the
-  // internal module before any optimization.
-  if (CodeGenOpts.DisableLLVMPasses)
-    return;
-
-  // Figure out TargetLibraryInfo.  This needs to be added to MPM and FPM
-  // manually (and not via PMBuilder), since some passes (eg. InstrProfiling)
-  // are inserted before PMBuilder ones - they'd get the default-constructed
-  // TLI with an unknown target otherwise.
-  Triple TargetTriple(TheModule->getTargetTriple());
-  std::unique_ptr<TargetLibraryInfoImpl> TLII(
-      createTLII(TargetTriple, CodeGenOpts));
-
-  PassManagerBuilderWrapper PMBuilder(TargetTriple, CodeGenOpts, LangOpts);
-
-  // At O0 and O1 we only run the always inliner which is more efficient. At
-  // higher optimization levels we run the normal inliner.
-  if (CodeGenOpts.OptimizationLevel <= 1) {
-    bool InsertLifetimeIntrinsics = (CodeGenOpts.OptimizationLevel != 0 &&
-                                     !CodeGenOpts.DisableLifetimeMarkers);
-    PMBuilder.Inliner = createAlwaysInlinerLegacyPass(InsertLifetimeIntrinsics);
-  } else {
-    // We do not want to inline hot callsites for SamplePGO module-summary build
-    // because profile annotation will happen again in ThinLTO backend, and we
-    // want the IR of the hot path to match the profile.
-    PMBuilder.Inliner = createFunctionInliningPass(
-        CodeGenOpts.OptimizationLevel, CodeGenOpts.OptimizeSize,
-        (!CodeGenOpts.SampleProfileFile.empty() &&
-         CodeGenOpts.PrepareForThinLTO));
-  }
-
-  PMBuilder.OptLevel = CodeGenOpts.OptimizationLevel;
-  PMBuilder.SizeLevel = CodeGenOpts.OptimizeSize;
-  PMBuilder.SLPVectorize = CodeGenOpts.VectorizeSLP;
-  PMBuilder.LoopVectorize = CodeGenOpts.VectorizeLoop;
-
-  PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops;
-  // Loop interleaving in the loop vectorizer has historically been set to be
-  // enabled when loop unrolling is enabled.
-  PMBuilder.LoopsInterleaved = CodeGenOpts.UnrollLoops;
-  PMBuilder.MergeFunctions = CodeGenOpts.MergeFunctions;
-  PMBuilder.PrepareForThinLTO = CodeGenOpts.PrepareForThinLTO;
-  PMBuilder.PrepareForLTO = CodeGenOpts.PrepareForLTO;
-  PMBuilder.RerollLoops = CodeGenOpts.RerollLoops;
-
-  MPM.add(new TargetLibraryInfoWrapperPass(*TLII));
-
-  if (TM)
-    TM->adjustPassManager(PMBuilder);
-
-  if (CodeGenOpts.DebugInfoForProfiling ||
-      !CodeGenOpts.SampleProfileFile.empty())
-    PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible,
-                           addAddDiscriminatorsPass);
-
-  // In ObjC ARC mode, add the main ARC optimization passes.
-  if (LangOpts.ObjCAutoRefCount) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible,
-                           addObjCARCExpandPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_ModuleOptimizerEarly,
-                           addObjCARCAPElimPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate,
-                           addObjCARCOptPass);
-  }
-
-  if (LangOpts.Coroutines)
-    addCoroutinePassesToExtensionPoints(PMBuilder);
-
-  if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate,
-                           addBoundsCheckingPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addBoundsCheckingPass);
-  }
-
-  if (CodeGenOpts.SanitizeCoverageType ||
-      CodeGenOpts.SanitizeCoverageIndirectCalls ||
-      CodeGenOpts.SanitizeCoverageTraceCmp) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addSanitizerCoveragePass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addSanitizerCoveragePass);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addAddressSanitizerPasses);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addAddressSanitizerPasses);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::KernelAddress)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addKernelAddressSanitizerPasses);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addKernelAddressSanitizerPasses);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::HWAddress)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addHWAddressSanitizerPasses);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addHWAddressSanitizerPasses);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::KernelHWAddress)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addKernelHWAddressSanitizerPasses);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addKernelHWAddressSanitizerPasses);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Memory)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addMemorySanitizerPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addMemorySanitizerPass);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::KernelMemory)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addKernelMemorySanitizerPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addKernelMemorySanitizerPass);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Thread)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addThreadSanitizerPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addThreadSanitizerPass);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::DataFlow)) {
-    PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast,
-                           addDataFlowSanitizerPass);
-    PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0,
-                           addDataFlowSanitizerPass);
-  }
-
-  // Set up the per-function pass manager.
-  FPM.add(new TargetLibraryInfoWrapperPass(*TLII));
-  if (CodeGenOpts.VerifyModule)
-    FPM.add(createVerifierPass());
-
-  // Set up the per-module pass manager.
-  if (!CodeGenOpts.RewriteMapFiles.empty())
-    addSymbolRewriterPass(CodeGenOpts, &MPM);
-
-  if (Optional<GCOVOptions> Options = getGCOVOptions(CodeGenOpts)) {
-    MPM.add(createGCOVProfilerPass(*Options));
-    if (CodeGenOpts.getDebugInfo() == codegenoptions::NoDebugInfo)
-      MPM.add(createStripSymbolsPass(true));
-  }
-
-  if (Optional<InstrProfOptions> Options =
-          getInstrProfOptions(CodeGenOpts, LangOpts))
-    MPM.add(createInstrProfilingLegacyPass(*Options, false));
-
-  bool hasIRInstr = false;
-  if (CodeGenOpts.hasProfileIRInstr()) {
-    PMBuilder.EnablePGOInstrGen = true;
-    hasIRInstr = true;
-  }
-  if (CodeGenOpts.hasProfileCSIRInstr()) {
-    assert(!CodeGenOpts.hasProfileCSIRUse() &&
-           "Cannot have both CSProfileUse pass and CSProfileGen pass at the "
-           "same time");
-    assert(!hasIRInstr &&
-           "Cannot have both ProfileGen pass and CSProfileGen pass at the "
-           "same time");
-    PMBuilder.EnablePGOCSInstrGen = true;
-    hasIRInstr = true;
-  }
-  if (hasIRInstr) {
-    if (!CodeGenOpts.InstrProfileOutput.empty())
-      PMBuilder.PGOInstrGen = CodeGenOpts.InstrProfileOutput;
-    else
-      PMBuilder.PGOInstrGen = DefaultProfileGenName;
-  }
-  if (CodeGenOpts.hasProfileIRUse()) {
-    PMBuilder.PGOInstrUse = CodeGenOpts.ProfileInstrumentUsePath;
-    PMBuilder.EnablePGOCSInstrUse = CodeGenOpts.hasProfileCSIRUse();
-  }
-
-  if (!CodeGenOpts.SampleProfileFile.empty())
-    PMBuilder.PGOSampleUse = CodeGenOpts.SampleProfileFile;
-
-  PMBuilder.populateFunctionPassManager(FPM);
-  PMBuilder.populateModulePassManager(MPM);
-}
-
-static void setCommandLineOpts(const CodeGenOptions &CodeGenOpts) {
-  SmallVector<const char *, 16> BackendArgs;
-  BackendArgs.push_back("clang"); // Fake program name.
-  if (!CodeGenOpts.DebugPass.empty()) {
-    BackendArgs.push_back("-debug-pass");
-    BackendArgs.push_back(CodeGenOpts.DebugPass.c_str());
-  }
-  if (!CodeGenOpts.LimitFloatPrecision.empty()) {
-    BackendArgs.push_back("-limit-float-precision");
-    BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str());
-  }
-  BackendArgs.push_back(nullptr);
-  llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1,
-                                    BackendArgs.data());
-}
-
-void EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
-  // Create the TargetMachine for generating code.
-  std::string Error;
-  std::string Triple = TheModule->getTargetTriple();
-  const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
-  if (!TheTarget) {
-    if (MustCreateTM)
-      Diags.Report(diag::err_fe_unable_to_create_target) << Error;
-    return;
-  }
-
-  Optional<llvm::CodeModel::Model> CM = getCodeModel(CodeGenOpts);
-  std::string FeaturesStr =
-      llvm::join(TargetOpts.Features.begin(), TargetOpts.Features.end(), ",");
-  llvm::Reloc::Model RM = CodeGenOpts.RelocationModel;
-  CodeGenOpt::Level OptLevel = getCGOptLevel(CodeGenOpts);
-
-  llvm::TargetOptions Options;
-  initTargetOptions(Options, CodeGenOpts, TargetOpts, LangOpts, HSOpts);
-  TM.reset(TheTarget->createTargetMachine(Triple, TargetOpts.CPU, FeaturesStr,
-                                          Options, RM, CM, OptLevel));
-}
-
-bool EmitAssemblyHelper::AddEmitPasses(legacy::PassManager &CodeGenPasses,
-                                       BackendAction Action,
-                                       raw_pwrite_stream &OS,
-                                       raw_pwrite_stream *DwoOS) {
-  // Add LibraryInfo.
-  llvm::Triple TargetTriple(TheModule->getTargetTriple());
-  std::unique_ptr<TargetLibraryInfoImpl> TLII(
-      createTLII(TargetTriple, CodeGenOpts));
-  CodeGenPasses.add(new TargetLibraryInfoWrapperPass(*TLII));
-
-  // Normal mode, emit a .s or .o file by running the code generator. Note,
-  // this also adds codegenerator level optimization passes.
-  TargetMachine::CodeGenFileType CGFT = getCodeGenFileType(Action);
-
-  // Add ObjC ARC final-cleanup optimizations. This is done as part of the
-  // "codegen" passes so that it isn't run multiple times when there is
-  // inlining happening.
-  if (CodeGenOpts.OptimizationLevel > 0)
-    CodeGenPasses.add(createObjCARCContractPass());
-
-  if (TM->addPassesToEmitFile(CodeGenPasses, OS, DwoOS, CGFT,
-                              /*DisableVerify=*/!CodeGenOpts.VerifyModule)) {
-    Diags.Report(diag::err_fe_unable_to_interface_with_target);
-    return false;
-  }
-
-  return true;
-}
-
-void EmitAssemblyHelper::EmitAssembly(BackendAction Action,
-                                      std::unique_ptr<raw_pwrite_stream> OS) {
-  TimeRegion Region(FrontendTimesIsEnabled ? &CodeGenerationTime : nullptr);
-
-  setCommandLineOpts(CodeGenOpts);
-
-  bool UsesCodeGen = (Action != Backend_EmitNothing &&
-                      Action != Backend_EmitBC &&
-                      Action != Backend_EmitLL);
-  CreateTargetMachine(UsesCodeGen);
-
-  if (UsesCodeGen && !TM)
-    return;
-  if (TM)
-    TheModule->setDataLayout(TM->createDataLayout());
-
-  legacy::PassManager PerModulePasses;
-  PerModulePasses.add(
-      createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
-
-  legacy::FunctionPassManager PerFunctionPasses(TheModule);
-  PerFunctionPasses.add(
-      createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
-
-  CreatePasses(PerModulePasses, PerFunctionPasses);
-
-  legacy::PassManager CodeGenPasses;
-  CodeGenPasses.add(
-      createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
-
-  std::unique_ptr<llvm::ToolOutputFile> ThinLinkOS, DwoOS;
-
-  switch (Action) {
-  case Backend_EmitNothing:
-    break;
-
-  case Backend_EmitBC:
-    if (CodeGenOpts.PrepareForThinLTO && !CodeGenOpts.DisableLLVMPasses) {
-      if (!CodeGenOpts.ThinLinkBitcodeFile.empty()) {
-        ThinLinkOS = openOutputFile(CodeGenOpts.ThinLinkBitcodeFile);
-        if (!ThinLinkOS)
-          return;
-      }
-      TheModule->addModuleFlag(Module::Error, "EnableSplitLTOUnit",
-                               CodeGenOpts.EnableSplitLTOUnit);
-      PerModulePasses.add(createWriteThinLTOBitcodePass(
-          *OS, ThinLinkOS ? &ThinLinkOS->os() : nullptr));
-    } else {
-      // Emit a module summary by default for Regular LTO except for ld64
-      // targets
-      bool EmitLTOSummary =
-          (CodeGenOpts.PrepareForLTO &&
-           !CodeGenOpts.DisableLLVMPasses &&
-           llvm::Triple(TheModule->getTargetTriple()).getVendor() !=
-               llvm::Triple::Apple);
-      if (EmitLTOSummary) {
-        if (!TheModule->getModuleFlag("ThinLTO"))
-          TheModule->addModuleFlag(Module::Error, "ThinLTO", uint32_t(0));
-        TheModule->addModuleFlag(Module::Error, "EnableSplitLTOUnit",
-                                 CodeGenOpts.EnableSplitLTOUnit);
-      }
-
-      PerModulePasses.add(createBitcodeWriterPass(
-          *OS, CodeGenOpts.EmitLLVMUseLists, EmitLTOSummary));
-    }
-    break;
-
-  case Backend_EmitLL:
-    PerModulePasses.add(
-        createPrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists));
-    break;
-
-  default:
-    if (!CodeGenOpts.SplitDwarfOutput.empty()) {
-      DwoOS = openOutputFile(CodeGenOpts.SplitDwarfOutput);
-      if (!DwoOS)
-        return;
-    }
-    if (!AddEmitPasses(CodeGenPasses, Action, *OS,
-                       DwoOS ? &DwoOS->os() : nullptr))
-      return;
-  }
-
-  // Before executing passes, print the final values of the LLVM options.
-  cl::PrintOptionValues();
-
-  // Run passes. For now we do all passes at once, but eventually we
-  // would like to have the option of streaming code generation.
-
-  {
-    PrettyStackTraceString CrashInfo("Per-function optimization");
-
-    PerFunctionPasses.doInitialization();
-    for (Function &F : *TheModule)
-      if (!F.isDeclaration())
-        PerFunctionPasses.run(F);
-    PerFunctionPasses.doFinalization();
-  }
-
-  {
-    PrettyStackTraceString CrashInfo("Per-module optimization passes");
-    PerModulePasses.run(*TheModule);
-  }
-
-  {
-    PrettyStackTraceString CrashInfo("Code generation");
-    CodeGenPasses.run(*TheModule);
-  }
-
-  if (ThinLinkOS)
-    ThinLinkOS->keep();
-  if (DwoOS)
-    DwoOS->keep();
-}
-
-static PassBuilder::OptimizationLevel mapToLevel(const CodeGenOptions &Opts) {
-  switch (Opts.OptimizationLevel) {
-  default:
-    llvm_unreachable("Invalid optimization level!");
-
-  case 1:
-    return PassBuilder::O1;
-
-  case 2:
-    switch (Opts.OptimizeSize) {
-    default:
-      llvm_unreachable("Invalid optimization level for size!");
-
-    case 0:
-      return PassBuilder::O2;
-
-    case 1:
-      return PassBuilder::Os;
-
-    case 2:
-      return PassBuilder::Oz;
-    }
-
-  case 3:
-    return PassBuilder::O3;
-  }
-}
-
-static void addSanitizersAtO0(ModulePassManager &MPM,
-                              const Triple &TargetTriple,
-                              const LangOptions &LangOpts,
-                              const CodeGenOptions &CodeGenOpts) {
-  auto ASanPass = [&](SanitizerMask Mask, bool CompileKernel) {
-    MPM.addPass(RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
-    bool Recover = CodeGenOpts.SanitizeRecover.has(Mask);
-    MPM.addPass(createModuleToFunctionPassAdaptor(AddressSanitizerPass(
-        CompileKernel, Recover, CodeGenOpts.SanitizeAddressUseAfterScope)));
-    bool ModuleUseAfterScope = asanUseGlobalsGC(TargetTriple, CodeGenOpts);
-    MPM.addPass(
-        ModuleAddressSanitizerPass(CompileKernel, Recover, ModuleUseAfterScope,
-                                   CodeGenOpts.SanitizeAddressUseOdrIndicator));
-  };
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
-    ASanPass(SanitizerKind::Address, /*CompileKernel=*/false);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::KernelAddress)) {
-    ASanPass(SanitizerKind::KernelAddress, /*CompileKernel=*/true);
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Memory)) {
-    MPM.addPass(createModuleToFunctionPassAdaptor(MemorySanitizerPass({})));
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::KernelMemory)) {
-    MPM.addPass(createModuleToFunctionPassAdaptor(
-        MemorySanitizerPass({0, false, /*Kernel=*/true})));
-  }
-
-  if (LangOpts.Sanitize.has(SanitizerKind::Thread)) {
-    MPM.addPass(createModuleToFunctionPassAdaptor(ThreadSanitizerPass()));
-  }
-}
-
-/// A clean version of `EmitAssembly` that uses the new pass manager.
-///
-/// Not all features are currently supported in this system, but where
-/// necessary it falls back to the legacy pass manager to at least provide
-/// basic functionality.
-///
-/// This API is planned to have its functionality finished and then to replace
-/// `EmitAssembly` at some point in the future when the default switches.
-void EmitAssemblyHelper::EmitAssemblyWithNewPassManager(
-    BackendAction Action, std::unique_ptr<raw_pwrite_stream> OS) {
-  TimeRegion Region(FrontendTimesIsEnabled ? &CodeGenerationTime : nullptr);
-  setCommandLineOpts(CodeGenOpts);
-
-  bool RequiresCodeGen = (Action != Backend_EmitNothing &&
-                          Action != Backend_EmitBC &&
-                          Action != Backend_EmitLL);
-  CreateTargetMachine(RequiresCodeGen);
-
-  if (RequiresCodeGen && !TM)
-    return;
-  if (TM)
-    TheModule->setDataLayout(TM->createDataLayout());
-
-  Optional<PGOOptions> PGOOpt;
-
-  if (CodeGenOpts.hasProfileIRInstr())
-    // -fprofile-generate.
-    PGOOpt = PGOOptions(CodeGenOpts.InstrProfileOutput.empty()
-                            ? DefaultProfileGenName
-                            : CodeGenOpts.InstrProfileOutput,
-                        "", "", PGOOptions::IRInstr, PGOOptions::NoCSAction,
-                        CodeGenOpts.DebugInfoForProfiling);
-  else if (CodeGenOpts.hasProfileIRUse()) {
-    // -fprofile-use.
-    auto CSAction = CodeGenOpts.hasProfileCSIRUse() ? PGOOptions::CSIRUse
-                                                    : PGOOptions::NoCSAction;
-    PGOOpt = PGOOptions(CodeGenOpts.ProfileInstrumentUsePath, "",
-                        CodeGenOpts.ProfileRemappingFile, PGOOptions::IRUse,
-                        CSAction, CodeGenOpts.DebugInfoForProfiling);
-  } else if (!CodeGenOpts.SampleProfileFile.empty())
-    // -fprofile-sample-use
-    PGOOpt =
-        PGOOptions(CodeGenOpts.SampleProfileFile, "",
-                   CodeGenOpts.ProfileRemappingFile, PGOOptions::SampleUse,
-                   PGOOptions::NoCSAction, CodeGenOpts.DebugInfoForProfiling);
-  else if (CodeGenOpts.DebugInfoForProfiling)
-    // -fdebug-info-for-profiling
-    PGOOpt = PGOOptions("", "", "", PGOOptions::NoAction,
-                        PGOOptions::NoCSAction, true);
-
-  // Check to see if we want to generate a CS profile.
-  if (CodeGenOpts.hasProfileCSIRInstr()) {
-    assert(!CodeGenOpts.hasProfileCSIRUse() &&
-           "Cannot have both CSProfileUse pass and CSProfileGen pass at "
-           "the same time");
-    if (PGOOpt.hasValue()) {
-      assert(PGOOpt->Action != PGOOptions::IRInstr &&
-             PGOOpt->Action != PGOOptions::SampleUse &&
-             "Cannot run CSProfileGen pass with ProfileGen or SampleUse "
-             " pass");
-      PGOOpt->CSProfileGenFile = CodeGenOpts.InstrProfileOutput.empty()
-                                     ? DefaultProfileGenName
-                                     : CodeGenOpts.InstrProfileOutput;
-      PGOOpt->CSAction = PGOOptions::CSIRInstr;
-    } else
-      PGOOpt = PGOOptions("",
-                          CodeGenOpts.InstrProfileOutput.empty()
-                              ? DefaultProfileGenName
-                              : CodeGenOpts.InstrProfileOutput,
-                          "", PGOOptions::NoAction, PGOOptions::CSIRInstr,
-                          CodeGenOpts.DebugInfoForProfiling);
-  }
-
-  PipelineTuningOptions PTO;
-  PTO.LoopUnrolling = CodeGenOpts.UnrollLoops;
-  // For historical reasons, loop interleaving is set to mirror setting for loop
-  // unrolling.
-  PTO.LoopInterleaving = CodeGenOpts.UnrollLoops;
-  PTO.LoopVectorization = CodeGenOpts.VectorizeLoop;
-  PTO.SLPVectorization = CodeGenOpts.VectorizeSLP;
-
-  PassBuilder PB(TM.get(), PTO, PGOOpt);
-
-  // Attempt to load pass plugins and register their callbacks with PB.
-  for (auto &PluginFN : CodeGenOpts.PassPlugins) {
-    auto PassPlugin = PassPlugin::Load(PluginFN);
-    if (PassPlugin) {
-      PassPlugin->registerPassBuilderCallbacks(PB);
-    } else {
-      Diags.Report(diag::err_fe_unable_to_load_plugin)
-          << PluginFN << toString(PassPlugin.takeError());
-    }
-  }
-
-  LoopAnalysisManager LAM(CodeGenOpts.DebugPassManager);
-  FunctionAnalysisManager FAM(CodeGenOpts.DebugPassManager);
-  CGSCCAnalysisManager CGAM(CodeGenOpts.DebugPassManager);
-  ModuleAnalysisManager MAM(CodeGenOpts.DebugPassManager);
-
-  // Register the AA manager first so that our version is the one used.
-  FAM.registerPass([&] { return PB.buildDefaultAAPipeline(); });
-
-  // Register the target library analysis directly and give it a customized
-  // preset TLI.
-  Triple TargetTriple(TheModule->getTargetTriple());
-  std::unique_ptr<TargetLibraryInfoImpl> TLII(
-      createTLII(TargetTriple, CodeGenOpts));
-  FAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
-  MAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
-
-  // Register all the basic analyses with the managers.
-  PB.registerModuleAnalyses(MAM);
-  PB.registerCGSCCAnalyses(CGAM);
-  PB.registerFunctionAnalyses(FAM);
-  PB.registerLoopAnalyses(LAM);
-  PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
-
-  ModulePassManager MPM(CodeGenOpts.DebugPassManager);
-
-  if (!CodeGenOpts.DisableLLVMPasses) {
-    bool IsThinLTO = CodeGenOpts.PrepareForThinLTO;
-    bool IsLTO = CodeGenOpts.PrepareForLTO;
-
-    if (CodeGenOpts.OptimizationLevel == 0) {
-      if (Optional<GCOVOptions> Options = getGCOVOptions(CodeGenOpts))
-        MPM.addPass(GCOVProfilerPass(*Options));
-      if (Optional<InstrProfOptions> Options =
-              getInstrProfOptions(CodeGenOpts, LangOpts))
-        MPM.addPass(InstrProfiling(*Options, false));
-
-      // Build a minimal pipeline based on the semantics required by Clang,
-      // which is just that always inlining occurs. Further, disable generating
-      // lifetime intrinsics to avoid enabling further optimizations during
-      // code generation.
-      MPM.addPass(AlwaysInlinerPass(/*InsertLifetimeIntrinsics=*/false));
-
-      // At -O0 we directly run necessary sanitizer passes.
-      if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds))
-        MPM.addPass(createModuleToFunctionPassAdaptor(BoundsCheckingPass()));
-
-      // Lastly, add semantically necessary passes for LTO.
-      if (IsLTO || IsThinLTO) {
-        MPM.addPass(CanonicalizeAliasesPass());
-        MPM.addPass(NameAnonGlobalPass());
-      }
-    } else {
-      // Map our optimization levels into one of the distinct levels used to
-      // configure the pipeline.
-      PassBuilder::OptimizationLevel Level = mapToLevel(CodeGenOpts);
-
-      PB.registerPipelineStartEPCallback([](ModulePassManager &MPM) {
-        MPM.addPass(createModuleToFunctionPassAdaptor(
-            EntryExitInstrumenterPass(/*PostInlining=*/false)));
-      });
-
-      // Register callbacks to schedule sanitizer passes at the appropriate part of
-      // the pipeline.
-      // FIXME: either handle asan/the remaining sanitizers or error out
-      if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds))
-        PB.registerScalarOptimizerLateEPCallback(
-            [](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
-              FPM.addPass(BoundsCheckingPass());
-            });
-      if (LangOpts.Sanitize.has(SanitizerKind::Memory))
-        PB.registerOptimizerLastEPCallback(
-            [](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
-              FPM.addPass(MemorySanitizerPass({}));
-            });
-      if (LangOpts.Sanitize.has(SanitizerKind::Thread))
-        PB.registerOptimizerLastEPCallback(
-            [](FunctionPassManager &FPM, PassBuilder::OptimizationLevel Level) {
-              FPM.addPass(ThreadSanitizerPass());
-            });
-      if (LangOpts.Sanitize.has(SanitizerKind::Address)) {
-        PB.registerPipelineStartEPCallback([&](ModulePassManager &MPM) {
-          MPM.addPass(
-              RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
-        });
-        bool Recover = CodeGenOpts.SanitizeRecover.has(SanitizerKind::Address);
-        bool UseAfterScope = CodeGenOpts.SanitizeAddressUseAfterScope;
-        PB.registerOptimizerLastEPCallback(
-            [Recover, UseAfterScope](FunctionPassManager &FPM,
-                                     PassBuilder::OptimizationLevel Level) {
-              FPM.addPass(AddressSanitizerPass(
-                  /*CompileKernel=*/false, Recover, UseAfterScope));
-            });
-        bool ModuleUseAfterScope = asanUseGlobalsGC(TargetTriple, CodeGenOpts);
-        bool UseOdrIndicator = CodeGenOpts.SanitizeAddressUseOdrIndicator;
-        PB.registerPipelineStartEPCallback(
-            [Recover, ModuleUseAfterScope,
-             UseOdrIndicator](ModulePassManager &MPM) {
-              MPM.addPass(ModuleAddressSanitizerPass(
-                  /*CompileKernel=*/false, Recover, ModuleUseAfterScope,
-                  UseOdrIndicator));
-            });
-      }
-      if (Optional<GCOVOptions> Options = getGCOVOptions(CodeGenOpts))
-        PB.registerPipelineStartEPCallback([Options](ModulePassManager &MPM) {
-          MPM.addPass(GCOVProfilerPass(*Options));
-        });
-      if (Optional<InstrProfOptions> Options =
-              getInstrProfOptions(CodeGenOpts, LangOpts))
-        PB.registerPipelineStartEPCallback([Options](ModulePassManager &MPM) {
-          MPM.addPass(InstrProfiling(*Options, false));
-        });
-
-      if (IsThinLTO) {
-        MPM = PB.buildThinLTOPreLinkDefaultPipeline(
-            Level, CodeGenOpts.DebugPassManager);
-        MPM.addPass(CanonicalizeAliasesPass());
-        MPM.addPass(NameAnonGlobalPass());
-      } else if (IsLTO) {
-        MPM = PB.buildLTOPreLinkDefaultPipeline(Level,
-                                                CodeGenOpts.DebugPassManager);
-        MPM.addPass(CanonicalizeAliasesPass());
-        MPM.addPass(NameAnonGlobalPass());
-      } else {
-        MPM = PB.buildPerModuleDefaultPipeline(Level,
-                                               CodeGenOpts.DebugPassManager);
-      }
-    }
-
-    if (LangOpts.Sanitize.has(SanitizerKind::HWAddress)) {
-      bool Recover = CodeGenOpts.SanitizeRecover.has(SanitizerKind::HWAddress);
-      MPM.addPass(HWAddressSanitizerPass(
-          /*CompileKernel=*/false, Recover));
-    }
-    if (LangOpts.Sanitize.has(SanitizerKind::KernelHWAddress)) {
-      MPM.addPass(HWAddressSanitizerPass(
-          /*CompileKernel=*/true, /*Recover=*/true));
-    }
-
-    if (CodeGenOpts.OptimizationLevel == 0)
-      addSanitizersAtO0(MPM, TargetTriple, LangOpts, CodeGenOpts);
-  }
-
-  // FIXME: We still use the legacy pass manager to do code generation. We
-  // create that pass manager here and use it as needed below.
-  legacy::PassManager CodeGenPasses;
-  bool NeedCodeGen = false;
-  std::unique_ptr<llvm::ToolOutputFile> ThinLinkOS, DwoOS;
-
-  // Append any output we need to the pass manager.
-  switch (Action) {
-  case Backend_EmitNothing:
-    break;
-
-  case Backend_EmitBC:
-    if (CodeGenOpts.PrepareForThinLTO && !CodeGenOpts.DisableLLVMPasses) {
-      if (!CodeGenOpts.ThinLinkBitcodeFile.empty()) {
-        ThinLinkOS = openOutputFile(CodeGenOpts.ThinLinkBitcodeFile);
-        if (!ThinLinkOS)
-          return;
-      }
-      TheModule->addModuleFlag(Module::Error, "EnableSplitLTOUnit",
-                               CodeGenOpts.EnableSplitLTOUnit);
-      MPM.addPass(ThinLTOBitcodeWriterPass(*OS, ThinLinkOS ? &ThinLinkOS->os()
-                                                           : nullptr));
-    } else {
-      // Emit a module summary by default for Regular LTO except for ld64
-      // targets
-      bool EmitLTOSummary =
-          (CodeGenOpts.PrepareForLTO &&
-           !CodeGenOpts.DisableLLVMPasses &&
-           llvm::Triple(TheModule->getTargetTriple()).getVendor() !=
-               llvm::Triple::Apple);
-      if (EmitLTOSummary) {
-        if (!TheModule->getModuleFlag("ThinLTO"))
-          TheModule->addModuleFlag(Module::Error, "ThinLTO", uint32_t(0));
-        TheModule->addModuleFlag(Module::Error, "EnableSplitLTOUnit",
-                                 CodeGenOpts.EnableSplitLTOUnit);
-      }
-      MPM.addPass(
-          BitcodeWriterPass(*OS, CodeGenOpts.EmitLLVMUseLists, EmitLTOSummary));
-    }
-    break;
-
-  case Backend_EmitLL:
-    MPM.addPass(PrintModulePass(*OS, "", CodeGenOpts.EmitLLVMUseLists));
-    break;
-
-  case Backend_EmitAssembly:
-  case Backend_EmitMCNull:
-  case Backend_EmitObj:
-    NeedCodeGen = true;
-    CodeGenPasses.add(
-        createTargetTransformInfoWrapperPass(getTargetIRAnalysis()));
-    if (!CodeGenOpts.SplitDwarfOutput.empty()) {
-      DwoOS = openOutputFile(CodeGenOpts.SplitDwarfOutput);
-      if (!DwoOS)
-        return;
-    }
-    if (!AddEmitPasses(CodeGenPasses, Action, *OS,
-                       DwoOS ? &DwoOS->os() : nullptr))
-      // FIXME: Should we handle this error differently?
-      return;
-    break;
-  }
-
-  // Before executing passes, print the final values of the LLVM options.
-  cl::PrintOptionValues();
-
-  // Now that we have all of the passes ready, run them.
-  {
-    PrettyStackTraceString CrashInfo("Optimizer");
-    MPM.run(*TheModule, MAM);
-  }
-
-  // Now if needed, run the legacy PM for codegen.
-  if (NeedCodeGen) {
-    PrettyStackTraceString CrashInfo("Code generation");
-    CodeGenPasses.run(*TheModule);
-  }
-
-  if (ThinLinkOS)
-    ThinLinkOS->keep();
-  if (DwoOS)
-    DwoOS->keep();
-}
-
-Expected<BitcodeModule> clang::FindThinLTOModule(MemoryBufferRef MBRef) {
-  Expected<std::vector<BitcodeModule>> BMsOrErr = getBitcodeModuleList(MBRef);
-  if (!BMsOrErr)
-    return BMsOrErr.takeError();
-
-  // The bitcode file may contain multiple modules, we want the one that is
-  // marked as being the ThinLTO module.
-  if (const BitcodeModule *Bm = FindThinLTOModule(*BMsOrErr))
-    return *Bm;
-
-  return make_error<StringError>("Could not find module summary",
-                                 inconvertibleErrorCode());
-}
-
-BitcodeModule *clang::FindThinLTOModule(MutableArrayRef<BitcodeModule> BMs) {
-  for (BitcodeModule &BM : BMs) {
-    Expected<BitcodeLTOInfo> LTOInfo = BM.getLTOInfo();
-    if (LTOInfo && LTOInfo->IsThinLTO)
-      return &BM;
-  }
-  return nullptr;
-}
-
-static void runThinLTOBackend(ModuleSummaryIndex *CombinedIndex, Module *M,
-                              const HeaderSearchOptions &HeaderOpts,
-                              const CodeGenOptions &CGOpts,
-                              const clang::TargetOptions &TOpts,
-                              const LangOptions &LOpts,
-                              std::unique_ptr<raw_pwrite_stream> OS,
-                              std::string SampleProfile,
-                              std::string ProfileRemapping,
-                              BackendAction Action) {
-  StringMap<DenseMap<GlobalValue::GUID, GlobalValueSummary *>>
-      ModuleToDefinedGVSummaries;
-  CombinedIndex->collectDefinedGVSummariesPerModule(ModuleToDefinedGVSummaries);
-
-  setCommandLineOpts(CGOpts);
-
-  // We can simply import the values mentioned in the combined index, since
-  // we should only invoke this using the individual indexes written out
-  // via a WriteIndexesThinBackend.
-  FunctionImporter::ImportMapTy ImportList;
-  for (auto &GlobalList : *CombinedIndex) {
-    // Ignore entries for undefined references.
-    if (GlobalList.second.SummaryList.empty())
-      continue;
-
-    auto GUID = GlobalList.first;
-    for (auto &Summary : GlobalList.second.SummaryList) {
-      // Skip the summaries for the importing module. These are included to
-      // e.g. record required linkage changes.
-      if (Summary->modulePath() == M->getModuleIdentifier())
-        continue;
-      // Add an entry to provoke importing by thinBackend.
-      ImportList[Summary->modulePath()].insert(GUID);
-    }
-  }
-
-  std::vector<std::unique_ptr<llvm::MemoryBuffer>> OwnedImports;
-  MapVector<llvm::StringRef, llvm::BitcodeModule> ModuleMap;
-
-  for (auto &I : ImportList) {
-    ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> MBOrErr =
-        llvm::MemoryBuffer::getFile(I.first());
-    if (!MBOrErr) {
-      errs() << "Error loading imported file '" << I.first()
-             << "': " << MBOrErr.getError().message() << "\n";
-      return;
-    }
-
-    Expected<BitcodeModule> BMOrErr = FindThinLTOModule(**MBOrErr);
-    if (!BMOrErr) {
-      handleAllErrors(BMOrErr.takeError(), [&](ErrorInfoBase &EIB) {
-        errs() << "Error loading imported file '" << I.first()
-               << "': " << EIB.message() << '\n';
-      });
-      return;
-    }
-    ModuleMap.insert({I.first(), *BMOrErr});
-
-    OwnedImports.push_back(std::move(*MBOrErr));
-  }
-  auto AddStream = [&](size_t Task) {
-    return llvm::make_unique<lto::NativeObjectStream>(std::move(OS));
-  };
-  lto::Config Conf;
-  if (CGOpts.SaveTempsFilePrefix != "") {
-    if (Error E = Conf.addSaveTemps(CGOpts.SaveTempsFilePrefix + ".",
-                                    /* UseInputModulePath */ false)) {
-      handleAllErrors(std::move(E), [&](ErrorInfoBase &EIB) {
-        errs() << "Error setting up ThinLTO save-temps: " << EIB.message()
-               << '\n';
-      });
-    }
-  }
-  Conf.CPU = TOpts.CPU;
-  Conf.CodeModel = getCodeModel(CGOpts);
-  Conf.MAttrs = TOpts.Features;
-  Conf.RelocModel = CGOpts.RelocationModel;
-  Conf.CGOptLevel = getCGOptLevel(CGOpts);
-  Conf.OptLevel = CGOpts.OptimizationLevel;
-  initTargetOptions(Conf.Options, CGOpts, TOpts, LOpts, HeaderOpts);
-  Conf.SampleProfile = std::move(SampleProfile);
-
-  // Context sensitive profile.
-  if (CGOpts.hasProfileCSIRInstr()) {
-    Conf.RunCSIRInstr = true;
-    Conf.CSIRProfile = std::move(CGOpts.InstrProfileOutput);
-  } else if (CGOpts.hasProfileCSIRUse()) {
-    Conf.RunCSIRInstr = false;
-    Conf.CSIRProfile = std::move(CGOpts.ProfileInstrumentUsePath);
-  }
-
-  Conf.ProfileRemapping = std::move(ProfileRemapping);
-  Conf.UseNewPM = CGOpts.ExperimentalNewPassManager;
-  Conf.DebugPassManager = CGOpts.DebugPassManager;
-  Conf.RemarksWithHotness = CGOpts.DiagnosticsWithHotness;
-  Conf.RemarksFilename = CGOpts.OptRecordFile;
-  Conf.RemarksPasses = CGOpts.OptRecordPasses;
-  Conf.RemarksFormat = CGOpts.OptRecordFormat;
-  Conf.SplitDwarfFile = CGOpts.SplitDwarfFile;
-  Conf.SplitDwarfOutput = CGOpts.SplitDwarfOutput;
-  switch (Action) {
-  case Backend_EmitNothing:
-    Conf.PreCodeGenModuleHook = [](size_t Task, const Module &Mod) {
-      return false;
-    };
-    break;
-  case Backend_EmitLL:
-    Conf.PreCodeGenModuleHook = [&](size_t Task, const Module &Mod) {
-      M->print(*OS, nullptr, CGOpts.EmitLLVMUseLists);
-      return false;
-    };
-    break;
-  case Backend_EmitBC:
-    Conf.PreCodeGenModuleHook = [&](size_t Task, const Module &Mod) {
-      WriteBitcodeToFile(*M, *OS, CGOpts.EmitLLVMUseLists);
-      return false;
-    };
-    break;
-  default:
-    Conf.CGFileType = getCodeGenFileType(Action);
-    break;
-  }
-  if (Error E = thinBackend(
-          Conf, -1, AddStream, *M, *CombinedIndex, ImportList,
-          ModuleToDefinedGVSummaries[M->getModuleIdentifier()], ModuleMap)) {
-    handleAllErrors(std::move(E), [&](ErrorInfoBase &EIB) {
-      errs() << "Error running ThinLTO backend: " << EIB.message() << '\n';
-    });
-  }
-}
-
-void clang::EmitBackendOutput(DiagnosticsEngine &Diags,
-                              const HeaderSearchOptions &HeaderOpts,
-                              const CodeGenOptions &CGOpts,
-                              const clang::TargetOptions &TOpts,
-                              const LangOptions &LOpts,
-                              const llvm::DataLayout &TDesc, Module *M,
-                              BackendAction Action,
-                              std::unique_ptr<raw_pwrite_stream> OS) {
-
-  llvm::TimeTraceScope TimeScope("Backend", StringRef(""));
-
-  std::unique_ptr<llvm::Module> EmptyModule;
-  if (!CGOpts.ThinLTOIndexFile.empty()) {
-    // If we are performing a ThinLTO importing compile, load the function index
-    // into memory and pass it into runThinLTOBackend, which will run the
-    // function importer and invoke LTO passes.
-    Expected<std::unique_ptr<ModuleSummaryIndex>> IndexOrErr =
-        llvm::getModuleSummaryIndexForFile(CGOpts.ThinLTOIndexFile,
-                                           /*IgnoreEmptyThinLTOIndexFile*/true);
-    if (!IndexOrErr) {
-      logAllUnhandledErrors(IndexOrErr.takeError(), errs(),
-                            "Error loading index file '" +
-                            CGOpts.ThinLTOIndexFile + "': ");
-      return;
-    }
-    std::unique_ptr<ModuleSummaryIndex> CombinedIndex = std::move(*IndexOrErr);
-    // A null CombinedIndex means we should skip ThinLTO compilation
-    // (LLVM will optionally ignore empty index files, returning null instead
-    // of an error).
-    if (CombinedIndex) {
-      if (!CombinedIndex->skipModuleByDistributedBackend()) {
-        runThinLTOBackend(CombinedIndex.get(), M, HeaderOpts, CGOpts, TOpts,
-                          LOpts, std::move(OS), CGOpts.SampleProfileFile,
-                          CGOpts.ProfileRemappingFile, Action);
-        return;
-      }
-      // Distributed indexing detected that nothing from the module is needed
-      // for the final linking. So we can skip the compilation. We sill need to
-      // output an empty object file to make sure that a linker does not fail
-      // trying to read it. Also for some features, like CFI, we must skip
-      // the compilation as CombinedIndex does not contain all required
-      // information.
-      EmptyModule = llvm::make_unique<llvm::Module>("empty", M->getContext());
-      EmptyModule->setTargetTriple(M->getTargetTriple());
-      M = EmptyModule.get();
-    }
-  }
-
-  EmitAssemblyHelper AsmHelper(Diags, HeaderOpts, CGOpts, TOpts, LOpts, M);
-
-  if (CGOpts.ExperimentalNewPassManager)
-    AsmHelper.EmitAssemblyWithNewPassManager(Action, std::move(OS));
-  else
-    AsmHelper.EmitAssembly(Action, std::move(OS));
-
-  // Verify clang's TargetInfo DataLayout against the LLVM TargetMachine's
-  // DataLayout.
-  if (AsmHelper.TM) {
-    std::string DLDesc = M->getDataLayout().getStringRepresentation();
-    if (DLDesc != TDesc.getStringRepresentation()) {
-      unsigned DiagID = Diags.getCustomDiagID(
-          DiagnosticsEngine::Error, "backend data layout '%0' does not match "
-                                    "expected target description '%1'");
-      Diags.Report(DiagID) << DLDesc << TDesc.getStringRepresentation();
-    }
-  }
-}
-
-static const char* getSectionNameForBitcode(const Triple &T) {
-  switch (T.getObjectFormat()) {
-  case Triple::MachO:
-    return "__LLVM,__bitcode";
-  case Triple::COFF:
-  case Triple::ELF:
-  case Triple::Wasm:
-  case Triple::UnknownObjectFormat:
-    return ".llvmbc";
-  case Triple::XCOFF:
-    llvm_unreachable("XCOFF is not yet implemented");
-    break;
-  }
-  llvm_unreachable("Unimplemented ObjectFormatType");
-}
-
-static const char* getSectionNameForCommandline(const Triple &T) {
-  switch (T.getObjectFormat()) {
-  case Triple::MachO:
-    return "__LLVM,__cmdline";
-  case Triple::COFF:
-  case Triple::ELF:
-  case Triple::Wasm:
-  case Triple::UnknownObjectFormat:
-    return ".llvmcmd";
-  case Triple::XCOFF:
-    llvm_unreachable("XCOFF is not yet implemented");
-    break;
-  }
-  llvm_unreachable("Unimplemented ObjectFormatType");
-}
-
-// With -fembed-bitcode, save a copy of the llvm IR as data in the
-// __LLVM,__bitcode section.
-void clang::EmbedBitcode(llvm::Module *M, const CodeGenOptions &CGOpts,
-                         llvm::MemoryBufferRef Buf) {
-  if (CGOpts.getEmbedBitcode() == CodeGenOptions::Embed_Off)
-    return;
-
-  // Save llvm.compiler.used and remote it.
-  SmallVector<Constant*, 2> UsedArray;
-  SmallPtrSet<GlobalValue*, 4> UsedGlobals;
-  Type *UsedElementType = Type::getInt8Ty(M->getContext())->getPointerTo(0);
-  GlobalVariable *Used = collectUsedGlobalVariables(*M, UsedGlobals, true);
-  for (auto *GV : UsedGlobals) {
-    if (GV->getName() != "llvm.embedded.module" &&
-        GV->getName() != "llvm.cmdline")
-      UsedArray.push_back(
-          ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV, UsedElementType));
-  }
-  if (Used)
-    Used->eraseFromParent();
-
-  // Embed the bitcode for the llvm module.
-  std::string Data;
-  ArrayRef<uint8_t> ModuleData;
-  Triple T(M->getTargetTriple());
-  // Create a constant that contains the bitcode.
-  // In case of embedding a marker, ignore the input Buf and use the empty
-  // ArrayRef. It is also legal to create a bitcode marker even Buf is empty.
-  if (CGOpts.getEmbedBitcode() != CodeGenOptions::Embed_Marker) {
-    if (!isBitcode((const unsigned char *)Buf.getBufferStart(),
-                   (const unsigned char *)Buf.getBufferEnd())) {
-      // If the input is LLVM Assembly, bitcode is produced by serializing
-      // the module. Use-lists order need to be perserved in this case.
-      llvm::raw_string_ostream OS(Data);
-      llvm::WriteBitcodeToFile(*M, OS, /* ShouldPreserveUseListOrder */ true);
-      ModuleData =
-          ArrayRef<uint8_t>((const uint8_t *)OS.str().data(), OS.str().size());
-    } else
-      // If the input is LLVM bitcode, write the input byte stream directly.
-      ModuleData = ArrayRef<uint8_t>((const uint8_t *)Buf.getBufferStart(),
-                                     Buf.getBufferSize());
-  }
-  llvm::Constant *ModuleConstant =
-      llvm::ConstantDataArray::get(M->getContext(), ModuleData);
-  llvm::GlobalVariable *GV = new llvm::GlobalVariable(
-      *M, ModuleConstant->getType(), true, llvm::GlobalValue::PrivateLinkage,
-      ModuleConstant);
-  GV->setSection(getSectionNameForBitcode(T));
-  UsedArray.push_back(
-      ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV, UsedElementType));
-  if (llvm::GlobalVariable *Old =
-          M->getGlobalVariable("llvm.embedded.module", true)) {
-    assert(Old->hasOneUse() &&
-           "llvm.embedded.module can only be used once in llvm.compiler.used");
-    GV->takeName(Old);
-    Old->eraseFromParent();
-  } else {
-    GV->setName("llvm.embedded.module");
-  }
-
-  // Skip if only bitcode needs to be embedded.
-  if (CGOpts.getEmbedBitcode() != CodeGenOptions::Embed_Bitcode) {
-    // Embed command-line options.
-    ArrayRef<uint8_t> CmdData(const_cast<uint8_t *>(CGOpts.CmdArgs.data()),
-                              CGOpts.CmdArgs.size());
-    llvm::Constant *CmdConstant =
-      llvm::ConstantDataArray::get(M->getContext(), CmdData);
-    GV = new llvm::GlobalVariable(*M, CmdConstant->getType(), true,
-                                  llvm::GlobalValue::PrivateLinkage,
-                                  CmdConstant);
-    GV->setSection(getSectionNameForCommandline(T));
-    UsedArray.push_back(
-        ConstantExpr::getPointerBitCastOrAddrSpaceCast(GV, UsedElementType));
-    if (llvm::GlobalVariable *Old =
-            M->getGlobalVariable("llvm.cmdline", true)) {
-      assert(Old->hasOneUse() &&
-             "llvm.cmdline can only be used once in llvm.compiler.used");
-      GV->takeName(Old);
-      Old->eraseFromParent();
-    } else {
-      GV->setName("llvm.cmdline");
-    }
-  }
-
-  if (UsedArray.empty())
-    return;
-
-  // Recreate llvm.compiler.used.
-  ArrayType *ATy = ArrayType::get(UsedElementType, UsedArray.size());
-  auto *NewUsed = new GlobalVariable(
-      *M, ATy, false, llvm::GlobalValue::AppendingLinkage,
-      llvm::ConstantArray::get(ATy, UsedArray), "llvm.compiler.used");
-  NewUsed->setSection("llvm.metadata");
-}