1 files changed, 0 insertions, 1086 deletions

diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp b/contrib/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp
deleted file mode 100644
index 0ae9ea427d65..000000000000
--- a/contrib/llvm/tools/clang/lib/CodeGen/CodeGenAction.cpp
+++ /dev/null
@@ -1,1086 +0,0 @@
-//===--- CodeGenAction.cpp - LLVM Code Generation Frontend Action ---------===//
-//
-// 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/CodeGenAction.h"
-#include "CodeGenModule.h"
-#include "CoverageMappingGen.h"
-#include "MacroPPCallbacks.h"
-#include "clang/AST/ASTConsumer.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/DeclCXX.h"
-#include "clang/AST/DeclGroup.h"
-#include "clang/Basic/FileManager.h"
-#include "clang/Basic/SourceManager.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/CodeGen/BackendUtil.h"
-#include "clang/CodeGen/ModuleBuilder.h"
-#include "clang/Driver/DriverDiagnostic.h"
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Frontend/FrontendDiagnostic.h"
-#include "clang/Lex/Preprocessor.h"
-#include "llvm/Bitcode/BitcodeReader.h"
-#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
-#include "llvm/IR/DebugInfo.h"
-#include "llvm/IR/DiagnosticInfo.h"
-#include "llvm/IR/DiagnosticPrinter.h"
-#include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/RemarkStreamer.h"
-#include "llvm/IRReader/IRReader.h"
-#include "llvm/Linker/Linker.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/Timer.h"
-#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Support/YAMLTraits.h"
-#include "llvm/Transforms/IPO/Internalize.h"
-
-#include <memory>
-using namespace clang;
-using namespace llvm;
-
-namespace clang {
-  class BackendConsumer;
-  class ClangDiagnosticHandler final : public DiagnosticHandler {
-  public:
-    ClangDiagnosticHandler(const CodeGenOptions &CGOpts, BackendConsumer *BCon)
-        : CodeGenOpts(CGOpts), BackendCon(BCon) {}
-
-    bool handleDiagnostics(const DiagnosticInfo &DI) override;
-
-    bool isAnalysisRemarkEnabled(StringRef PassName) const override {
-      return (CodeGenOpts.OptimizationRemarkAnalysisPattern &&
-              CodeGenOpts.OptimizationRemarkAnalysisPattern->match(PassName));
-    }
-    bool isMissedOptRemarkEnabled(StringRef PassName) const override {
-      return (CodeGenOpts.OptimizationRemarkMissedPattern &&
-              CodeGenOpts.OptimizationRemarkMissedPattern->match(PassName));
-    }
-    bool isPassedOptRemarkEnabled(StringRef PassName) const override {
-      return (CodeGenOpts.OptimizationRemarkPattern &&
-              CodeGenOpts.OptimizationRemarkPattern->match(PassName));
-    }
-
-    bool isAnyRemarkEnabled() const override {
-      return (CodeGenOpts.OptimizationRemarkAnalysisPattern ||
-              CodeGenOpts.OptimizationRemarkMissedPattern ||
-              CodeGenOpts.OptimizationRemarkPattern);
-    }
-
-  private:
-    const CodeGenOptions &CodeGenOpts;
-    BackendConsumer *BackendCon;
-  };
-
-  class BackendConsumer : public ASTConsumer {
-    using LinkModule = CodeGenAction::LinkModule;
-
-    virtual void anchor();
-    DiagnosticsEngine &Diags;
-    BackendAction Action;
-    const HeaderSearchOptions &HeaderSearchOpts;
-    const CodeGenOptions &CodeGenOpts;
-    const TargetOptions &TargetOpts;
-    const LangOptions &LangOpts;
-    std::unique_ptr<raw_pwrite_stream> AsmOutStream;
-    ASTContext *Context;
-
-    Timer LLVMIRGeneration;
-    unsigned LLVMIRGenerationRefCount;
-
-    /// True if we've finished generating IR. This prevents us from generating
-    /// additional LLVM IR after emitting output in HandleTranslationUnit. This
-    /// can happen when Clang plugins trigger additional AST deserialization.
-    bool IRGenFinished = false;
-
-    std::unique_ptr<CodeGenerator> Gen;
-
-    SmallVector<LinkModule, 4> LinkModules;
-
-    // This is here so that the diagnostic printer knows the module a diagnostic
-    // refers to.
-    llvm::Module *CurLinkModule = nullptr;
-
-  public:
-    BackendConsumer(BackendAction Action, DiagnosticsEngine &Diags,
-                    const HeaderSearchOptions &HeaderSearchOpts,
-                    const PreprocessorOptions &PPOpts,
-                    const CodeGenOptions &CodeGenOpts,
-                    const TargetOptions &TargetOpts,
-                    const LangOptions &LangOpts, bool TimePasses,
-                    const std::string &InFile,
-                    SmallVector<LinkModule, 4> LinkModules,
-                    std::unique_ptr<raw_pwrite_stream> OS, LLVMContext &C,
-                    CoverageSourceInfo *CoverageInfo = nullptr)
-        : Diags(Diags), Action(Action), HeaderSearchOpts(HeaderSearchOpts),
-          CodeGenOpts(CodeGenOpts), TargetOpts(TargetOpts), LangOpts(LangOpts),
-          AsmOutStream(std::move(OS)), Context(nullptr),
-          LLVMIRGeneration("irgen", "LLVM IR Generation Time"),
-          LLVMIRGenerationRefCount(0),
-          Gen(CreateLLVMCodeGen(Diags, InFile, HeaderSearchOpts, PPOpts,
-                                CodeGenOpts, C, CoverageInfo)),
-          LinkModules(std::move(LinkModules)) {
-      FrontendTimesIsEnabled = TimePasses;
-      llvm::TimePassesIsEnabled = TimePasses;
-    }
-    llvm::Module *getModule() const { return Gen->GetModule(); }
-    std::unique_ptr<llvm::Module> takeModule() {
-      return std::unique_ptr<llvm::Module>(Gen->ReleaseModule());
-    }
-
-    CodeGenerator *getCodeGenerator() { return Gen.get(); }
-
-    void HandleCXXStaticMemberVarInstantiation(VarDecl *VD) override {
-      Gen->HandleCXXStaticMemberVarInstantiation(VD);
-    }
-
-    void Initialize(ASTContext &Ctx) override {
-      assert(!Context && "initialized multiple times");
-
-      Context = &Ctx;
-
-      if (FrontendTimesIsEnabled)
-        LLVMIRGeneration.startTimer();
-
-      Gen->Initialize(Ctx);
-
-      if (FrontendTimesIsEnabled)
-        LLVMIRGeneration.stopTimer();
-    }
-
-    bool HandleTopLevelDecl(DeclGroupRef D) override {
-      PrettyStackTraceDecl CrashInfo(*D.begin(), SourceLocation(),
-                                     Context->getSourceManager(),
-                                     "LLVM IR generation of declaration");
-
-      // Recurse.
-      if (FrontendTimesIsEnabled) {
-        LLVMIRGenerationRefCount += 1;
-        if (LLVMIRGenerationRefCount == 1)
-          LLVMIRGeneration.startTimer();
-      }
-
-      Gen->HandleTopLevelDecl(D);
-
-      if (FrontendTimesIsEnabled) {
-        LLVMIRGenerationRefCount -= 1;
-        if (LLVMIRGenerationRefCount == 0)
-          LLVMIRGeneration.stopTimer();
-      }
-
-      return true;
-    }
-
-    void HandleInlineFunctionDefinition(FunctionDecl *D) override {
-      PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
-                                     Context->getSourceManager(),
-                                     "LLVM IR generation of inline function");
-      if (FrontendTimesIsEnabled)
-        LLVMIRGeneration.startTimer();
-
-      Gen->HandleInlineFunctionDefinition(D);
-
-      if (FrontendTimesIsEnabled)
-        LLVMIRGeneration.stopTimer();
-    }
-
-    void HandleInterestingDecl(DeclGroupRef D) override {
-      // Ignore interesting decls from the AST reader after IRGen is finished.
-      if (!IRGenFinished)
-        HandleTopLevelDecl(D);
-    }
-
-    // Links each entry in LinkModules into our module.  Returns true on error.
-    bool LinkInModules() {
-      for (auto &LM : LinkModules) {
-        if (LM.PropagateAttrs)
-          for (Function &F : *LM.Module)
-            Gen->CGM().AddDefaultFnAttrs(F);
-
-        CurLinkModule = LM.Module.get();
-
-        bool Err;
-        if (LM.Internalize) {
-          Err = Linker::linkModules(
-              *getModule(), std::move(LM.Module), LM.LinkFlags,
-              [](llvm::Module &M, const llvm::StringSet<> &GVS) {
-                internalizeModule(M, [&GVS](const llvm::GlobalValue &GV) {
-                  return !GV.hasName() || (GVS.count(GV.getName()) == 0);
-                });
-              });
-        } else {
-          Err = Linker::linkModules(*getModule(), std::move(LM.Module),
-                                    LM.LinkFlags);
-        }
-
-        if (Err)
-          return true;
-      }
-      return false; // success
-    }
-
-    void HandleTranslationUnit(ASTContext &C) override {
-      {
-        PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");
-        if (FrontendTimesIsEnabled) {
-          LLVMIRGenerationRefCount += 1;
-          if (LLVMIRGenerationRefCount == 1)
-            LLVMIRGeneration.startTimer();
-        }
-
-        Gen->HandleTranslationUnit(C);
-
-        if (FrontendTimesIsEnabled) {
-          LLVMIRGenerationRefCount -= 1;
-          if (LLVMIRGenerationRefCount == 0)
-            LLVMIRGeneration.stopTimer();
-        }
-
-        IRGenFinished = true;
-      }
-
-      // Silently ignore if we weren't initialized for some reason.
-      if (!getModule())
-        return;
-
-      // Install an inline asm handler so that diagnostics get printed through
-      // our diagnostics hooks.
-      LLVMContext &Ctx = getModule()->getContext();
-      LLVMContext::InlineAsmDiagHandlerTy OldHandler =
-        Ctx.getInlineAsmDiagnosticHandler();
-      void *OldContext = Ctx.getInlineAsmDiagnosticContext();
-      Ctx.setInlineAsmDiagnosticHandler(InlineAsmDiagHandler, this);
-
-      std::unique_ptr<DiagnosticHandler> OldDiagnosticHandler =
-          Ctx.getDiagnosticHandler();
-      Ctx.setDiagnosticHandler(llvm::make_unique<ClangDiagnosticHandler>(
-        CodeGenOpts, this));
-
-      Expected<std::unique_ptr<llvm::ToolOutputFile>> OptRecordFileOrErr =
-          setupOptimizationRemarks(Ctx, CodeGenOpts.OptRecordFile,
-                                   CodeGenOpts.OptRecordPasses,
-                                   CodeGenOpts.OptRecordFormat,
-                                   CodeGenOpts.DiagnosticsWithHotness,
-                                   CodeGenOpts.DiagnosticsHotnessThreshold);
-
-      if (Error E = OptRecordFileOrErr.takeError()) {
-        handleAllErrors(
-            std::move(E),
-            [&](const RemarkSetupFileError &E) {
-              Diags.Report(diag::err_cannot_open_file)
-                  << CodeGenOpts.OptRecordFile << E.message();
-            },
-            [&](const RemarkSetupPatternError &E) {
-              Diags.Report(diag::err_drv_optimization_remark_pattern)
-                  << E.message() << CodeGenOpts.OptRecordPasses;
-            },
-            [&](const RemarkSetupFormatError &E) {
-              Diags.Report(diag::err_drv_optimization_remark_format)
-                  << CodeGenOpts.OptRecordFormat;
-            });
-        return;
-      }
-      std::unique_ptr<llvm::ToolOutputFile> OptRecordFile =
-          std::move(*OptRecordFileOrErr);
-
-      if (OptRecordFile &&
-          CodeGenOpts.getProfileUse() != CodeGenOptions::ProfileNone)
-        Ctx.setDiagnosticsHotnessRequested(true);
-
-      // Link each LinkModule into our module.
-      if (LinkInModules())
-        return;
-
-      EmbedBitcode(getModule(), CodeGenOpts, llvm::MemoryBufferRef());
-
-      EmitBackendOutput(Diags, HeaderSearchOpts, CodeGenOpts, TargetOpts,
-                        LangOpts, C.getTargetInfo().getDataLayout(),
-                        getModule(), Action, std::move(AsmOutStream));
-
-      Ctx.setInlineAsmDiagnosticHandler(OldHandler, OldContext);
-
-      Ctx.setDiagnosticHandler(std::move(OldDiagnosticHandler));
-
-      if (OptRecordFile)
-        OptRecordFile->keep();
-    }
-
-    void HandleTagDeclDefinition(TagDecl *D) override {
-      PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
-                                     Context->getSourceManager(),
-                                     "LLVM IR generation of declaration");
-      Gen->HandleTagDeclDefinition(D);
-    }
-
-    void HandleTagDeclRequiredDefinition(const TagDecl *D) override {
-      Gen->HandleTagDeclRequiredDefinition(D);
-    }
-
-    void CompleteTentativeDefinition(VarDecl *D) override {
-      Gen->CompleteTentativeDefinition(D);
-    }
-
-    void AssignInheritanceModel(CXXRecordDecl *RD) override {
-      Gen->AssignInheritanceModel(RD);
-    }
-
-    void HandleVTable(CXXRecordDecl *RD) override {
-      Gen->HandleVTable(RD);
-    }
-
-    static void InlineAsmDiagHandler(const llvm::SMDiagnostic &SM,void *Context,
-                                     unsigned LocCookie) {
-      SourceLocation Loc = SourceLocation::getFromRawEncoding(LocCookie);
-      ((BackendConsumer*)Context)->InlineAsmDiagHandler2(SM, Loc);
-    }
-
-    /// Get the best possible source location to represent a diagnostic that
-    /// may have associated debug info.
-    const FullSourceLoc
-    getBestLocationFromDebugLoc(const llvm::DiagnosticInfoWithLocationBase &D,
-                                bool &BadDebugInfo, StringRef &Filename,
-                                unsigned &Line, unsigned &Column) const;
-
-    void InlineAsmDiagHandler2(const llvm::SMDiagnostic &,
-                               SourceLocation LocCookie);
-
-    void DiagnosticHandlerImpl(const llvm::DiagnosticInfo &DI);
-    /// Specialized handler for InlineAsm diagnostic.
-    /// \return True if the diagnostic has been successfully reported, false
-    /// otherwise.
-    bool InlineAsmDiagHandler(const llvm::DiagnosticInfoInlineAsm &D);
-    /// Specialized handler for StackSize diagnostic.
-    /// \return True if the diagnostic has been successfully reported, false
-    /// otherwise.
-    bool StackSizeDiagHandler(const llvm::DiagnosticInfoStackSize &D);
-    /// Specialized handler for unsupported backend feature diagnostic.
-    void UnsupportedDiagHandler(const llvm::DiagnosticInfoUnsupported &D);
-    /// Specialized handlers for optimization remarks.
-    /// Note that these handlers only accept remarks and they always handle
-    /// them.
-    void EmitOptimizationMessage(const llvm::DiagnosticInfoOptimizationBase &D,
-                                 unsigned DiagID);
-    void
-    OptimizationRemarkHandler(const llvm::DiagnosticInfoOptimizationBase &D);
-    void OptimizationRemarkHandler(
-        const llvm::OptimizationRemarkAnalysisFPCommute &D);
-    void OptimizationRemarkHandler(
-        const llvm::OptimizationRemarkAnalysisAliasing &D);
-    void OptimizationFailureHandler(
-        const llvm::DiagnosticInfoOptimizationFailure &D);
-  };
-
-  void BackendConsumer::anchor() {}
-}
-
-bool ClangDiagnosticHandler::handleDiagnostics(const DiagnosticInfo &DI) {
-  BackendCon->DiagnosticHandlerImpl(DI);
-  return true;
-}
-
-/// ConvertBackendLocation - Convert a location in a temporary llvm::SourceMgr
-/// buffer to be a valid FullSourceLoc.
-static FullSourceLoc ConvertBackendLocation(const llvm::SMDiagnostic &D,
-                                            SourceManager &CSM) {
-  // Get both the clang and llvm source managers.  The location is relative to
-  // a memory buffer that the LLVM Source Manager is handling, we need to add
-  // a copy to the Clang source manager.
-  const llvm::SourceMgr &LSM = *D.getSourceMgr();
-
-  // We need to copy the underlying LLVM memory buffer because llvm::SourceMgr
-  // already owns its one and clang::SourceManager wants to own its one.
-  const MemoryBuffer *LBuf =
-  LSM.getMemoryBuffer(LSM.FindBufferContainingLoc(D.getLoc()));
-
-  // Create the copy and transfer ownership to clang::SourceManager.
-  // TODO: Avoid copying files into memory.
-  std::unique_ptr<llvm::MemoryBuffer> CBuf =
-      llvm::MemoryBuffer::getMemBufferCopy(LBuf->getBuffer(),
-                                           LBuf->getBufferIdentifier());
-  // FIXME: Keep a file ID map instead of creating new IDs for each location.
-  FileID FID = CSM.createFileID(std::move(CBuf));
-
-  // Translate the offset into the file.
-  unsigned Offset = D.getLoc().getPointer() - LBuf->getBufferStart();
-  SourceLocation NewLoc =
-  CSM.getLocForStartOfFile(FID).getLocWithOffset(Offset);
-  return FullSourceLoc(NewLoc, CSM);
-}
-
-
-/// InlineAsmDiagHandler2 - This function is invoked when the backend hits an
-/// error parsing inline asm.  The SMDiagnostic indicates the error relative to
-/// the temporary memory buffer that the inline asm parser has set up.
-void BackendConsumer::InlineAsmDiagHandler2(const llvm::SMDiagnostic &D,
-                                            SourceLocation LocCookie) {
-  // There are a couple of different kinds of errors we could get here.  First,
-  // we re-format the SMDiagnostic in terms of a clang diagnostic.
-
-  // Strip "error: " off the start of the message string.
-  StringRef Message = D.getMessage();
-  if (Message.startswith("error: "))
-    Message = Message.substr(7);
-
-  // If the SMDiagnostic has an inline asm source location, translate it.
-  FullSourceLoc Loc;
-  if (D.getLoc() != SMLoc())
-    Loc = ConvertBackendLocation(D, Context->getSourceManager());
-
-  unsigned DiagID;
-  switch (D.getKind()) {
-  case llvm::SourceMgr::DK_Error:
-    DiagID = diag::err_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Warning:
-    DiagID = diag::warn_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Note:
-    DiagID = diag::note_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Remark:
-    llvm_unreachable("remarks unexpected");
-  }
-  // If this problem has clang-level source location information, report the
-  // issue in the source with a note showing the instantiated
-  // code.
-  if (LocCookie.isValid()) {
-    Diags.Report(LocCookie, DiagID).AddString(Message);
-
-    if (D.getLoc().isValid()) {
-      DiagnosticBuilder B = Diags.Report(Loc, diag::note_fe_inline_asm_here);
-      // Convert the SMDiagnostic ranges into SourceRange and attach them
-      // to the diagnostic.
-      for (const std::pair<unsigned, unsigned> &Range : D.getRanges()) {
-        unsigned Column = D.getColumnNo();
-        B << SourceRange(Loc.getLocWithOffset(Range.first - Column),
-                         Loc.getLocWithOffset(Range.second - Column));
-      }
-    }
-    return;
-  }
-
-  // Otherwise, report the backend issue as occurring in the generated .s file.
-  // If Loc is invalid, we still need to report the issue, it just gets no
-  // location info.
-  Diags.Report(Loc, DiagID).AddString(Message);
-}
-
-#define ComputeDiagID(Severity, GroupName, DiagID)                             \
-  do {                                                                         \
-    switch (Severity) {                                                        \
-    case llvm::DS_Error:                                                       \
-      DiagID = diag::err_fe_##GroupName;                                       \
-      break;                                                                   \
-    case llvm::DS_Warning:                                                     \
-      DiagID = diag::warn_fe_##GroupName;                                      \
-      break;                                                                   \
-    case llvm::DS_Remark:                                                      \
-      llvm_unreachable("'remark' severity not expected");                      \
-      break;                                                                   \
-    case llvm::DS_Note:                                                        \
-      DiagID = diag::note_fe_##GroupName;                                      \
-      break;                                                                   \
-    }                                                                          \
-  } while (false)
-
-#define ComputeDiagRemarkID(Severity, GroupName, DiagID)                       \
-  do {                                                                         \
-    switch (Severity) {                                                        \
-    case llvm::DS_Error:                                                       \
-      DiagID = diag::err_fe_##GroupName;                                       \
-      break;                                                                   \
-    case llvm::DS_Warning:                                                     \
-      DiagID = diag::warn_fe_##GroupName;                                      \
-      break;                                                                   \
-    case llvm::DS_Remark:                                                      \
-      DiagID = diag::remark_fe_##GroupName;                                    \
-      break;                                                                   \
-    case llvm::DS_Note:                                                        \
-      DiagID = diag::note_fe_##GroupName;                                      \
-      break;                                                                   \
-    }                                                                          \
-  } while (false)
-
-bool
-BackendConsumer::InlineAsmDiagHandler(const llvm::DiagnosticInfoInlineAsm &D) {
-  unsigned DiagID;
-  ComputeDiagID(D.getSeverity(), inline_asm, DiagID);
-  std::string Message = D.getMsgStr().str();
-
-  // If this problem has clang-level source location information, report the
-  // issue as being a problem in the source with a note showing the instantiated
-  // code.
-  SourceLocation LocCookie =
-      SourceLocation::getFromRawEncoding(D.getLocCookie());
-  if (LocCookie.isValid())
-    Diags.Report(LocCookie, DiagID).AddString(Message);
-  else {
-    // Otherwise, report the backend diagnostic as occurring in the generated
-    // .s file.
-    // If Loc is invalid, we still need to report the diagnostic, it just gets
-    // no location info.
-    FullSourceLoc Loc;
-    Diags.Report(Loc, DiagID).AddString(Message);
-  }
-  // We handled all the possible severities.
-  return true;
-}
-
-bool
-BackendConsumer::StackSizeDiagHandler(const llvm::DiagnosticInfoStackSize &D) {
-  if (D.getSeverity() != llvm::DS_Warning)
-    // For now, the only support we have for StackSize diagnostic is warning.
-    // We do not know how to format other severities.
-    return false;
-
-  if (const Decl *ND = Gen->GetDeclForMangledName(D.getFunction().getName())) {
-    // FIXME: Shouldn't need to truncate to uint32_t
-    Diags.Report(ND->getASTContext().getFullLoc(ND->getLocation()),
-                 diag::warn_fe_frame_larger_than)
-      << static_cast<uint32_t>(D.getStackSize()) << Decl::castToDeclContext(ND);
-    return true;
-  }
-
-  return false;
-}
-
-const FullSourceLoc BackendConsumer::getBestLocationFromDebugLoc(
-    const llvm::DiagnosticInfoWithLocationBase &D, bool &BadDebugInfo,
-    StringRef &Filename, unsigned &Line, unsigned &Column) const {
-  SourceManager &SourceMgr = Context->getSourceManager();
-  FileManager &FileMgr = SourceMgr.getFileManager();
-  SourceLocation DILoc;
-
-  if (D.isLocationAvailable()) {
-    D.getLocation(Filename, Line, Column);
-    if (Line > 0) {
-      const FileEntry *FE = FileMgr.getFile(Filename);
-      if (!FE)
-        FE = FileMgr.getFile(D.getAbsolutePath());
-      if (FE) {
-        // If -gcolumn-info was not used, Column will be 0. This upsets the
-        // source manager, so pass 1 if Column is not set.
-        DILoc = SourceMgr.translateFileLineCol(FE, Line, Column ? Column : 1);
-      }
-    }
-    BadDebugInfo = DILoc.isInvalid();
-  }
-
-  // If a location isn't available, try to approximate it using the associated
-  // function definition. We use the definition's right brace to differentiate
-  // from diagnostics that genuinely relate to the function itself.
-  FullSourceLoc Loc(DILoc, SourceMgr);
-  if (Loc.isInvalid())
-    if (const Decl *FD = Gen->GetDeclForMangledName(D.getFunction().getName()))
-      Loc = FD->getASTContext().getFullLoc(FD->getLocation());
-
-  if (DILoc.isInvalid() && D.isLocationAvailable())
-    // If we were not able to translate the file:line:col information
-    // back to a SourceLocation, at least emit a note stating that
-    // we could not translate this location. This can happen in the
-    // case of #line directives.
-    Diags.Report(Loc, diag::note_fe_backend_invalid_loc)
-        << Filename << Line << Column;
-
-  return Loc;
-}
-
-void BackendConsumer::UnsupportedDiagHandler(
-    const llvm::DiagnosticInfoUnsupported &D) {
-  // We only support errors.
-  assert(D.getSeverity() == llvm::DS_Error);
-
-  StringRef Filename;
-  unsigned Line, Column;
-  bool BadDebugInfo = false;
-  FullSourceLoc Loc =
-      getBestLocationFromDebugLoc(D, BadDebugInfo, Filename, Line, Column);
-
-  Diags.Report(Loc, diag::err_fe_backend_unsupported) << D.getMessage().str();
-
-  if (BadDebugInfo)
-    // If we were not able to translate the file:line:col information
-    // back to a SourceLocation, at least emit a note stating that
-    // we could not translate this location. This can happen in the
-    // case of #line directives.
-    Diags.Report(Loc, diag::note_fe_backend_invalid_loc)
-        << Filename << Line << Column;
-}
-
-void BackendConsumer::EmitOptimizationMessage(
-    const llvm::DiagnosticInfoOptimizationBase &D, unsigned DiagID) {
-  // We only support warnings and remarks.
-  assert(D.getSeverity() == llvm::DS_Remark ||
-         D.getSeverity() == llvm::DS_Warning);
-
-  StringRef Filename;
-  unsigned Line, Column;
-  bool BadDebugInfo = false;
-  FullSourceLoc Loc =
-      getBestLocationFromDebugLoc(D, BadDebugInfo, Filename, Line, Column);
-
-  std::string Msg;
-  raw_string_ostream MsgStream(Msg);
-  MsgStream << D.getMsg();
-
-  if (D.getHotness())
-    MsgStream << " (hotness: " << *D.getHotness() << ")";
-
-  Diags.Report(Loc, DiagID)
-      << AddFlagValue(D.getPassName())
-      << MsgStream.str();
-
-  if (BadDebugInfo)
-    // If we were not able to translate the file:line:col information
-    // back to a SourceLocation, at least emit a note stating that
-    // we could not translate this location. This can happen in the
-    // case of #line directives.
-    Diags.Report(Loc, diag::note_fe_backend_invalid_loc)
-        << Filename << Line << Column;
-}
-
-void BackendConsumer::OptimizationRemarkHandler(
-    const llvm::DiagnosticInfoOptimizationBase &D) {
-  // Without hotness information, don't show noisy remarks.
-  if (D.isVerbose() && !D.getHotness())
-    return;
-
-  if (D.isPassed()) {
-    // Optimization remarks are active only if the -Rpass flag has a regular
-    // expression that matches the name of the pass name in \p D.
-    if (CodeGenOpts.OptimizationRemarkPattern &&
-        CodeGenOpts.OptimizationRemarkPattern->match(D.getPassName()))
-      EmitOptimizationMessage(D, diag::remark_fe_backend_optimization_remark);
-  } else if (D.isMissed()) {
-    // Missed optimization remarks are active only if the -Rpass-missed
-    // flag has a regular expression that matches the name of the pass
-    // name in \p D.
-    if (CodeGenOpts.OptimizationRemarkMissedPattern &&
-        CodeGenOpts.OptimizationRemarkMissedPattern->match(D.getPassName()))
-      EmitOptimizationMessage(
-          D, diag::remark_fe_backend_optimization_remark_missed);
-  } else {
-    assert(D.isAnalysis() && "Unknown remark type");
-
-    bool ShouldAlwaysPrint = false;
-    if (auto *ORA = dyn_cast<llvm::OptimizationRemarkAnalysis>(&D))
-      ShouldAlwaysPrint = ORA->shouldAlwaysPrint();
-
-    if (ShouldAlwaysPrint ||
-        (CodeGenOpts.OptimizationRemarkAnalysisPattern &&
-         CodeGenOpts.OptimizationRemarkAnalysisPattern->match(D.getPassName())))
-      EmitOptimizationMessage(
-          D, diag::remark_fe_backend_optimization_remark_analysis);
-  }
-}
-
-void BackendConsumer::OptimizationRemarkHandler(
-    const llvm::OptimizationRemarkAnalysisFPCommute &D) {
-  // Optimization analysis remarks are active if the pass name is set to
-  // llvm::DiagnosticInfo::AlwasyPrint or if the -Rpass-analysis flag has a
-  // regular expression that matches the name of the pass name in \p D.
-
-  if (D.shouldAlwaysPrint() ||
-      (CodeGenOpts.OptimizationRemarkAnalysisPattern &&
-       CodeGenOpts.OptimizationRemarkAnalysisPattern->match(D.getPassName())))
-    EmitOptimizationMessage(
-        D, diag::remark_fe_backend_optimization_remark_analysis_fpcommute);
-}
-
-void BackendConsumer::OptimizationRemarkHandler(
-    const llvm::OptimizationRemarkAnalysisAliasing &D) {
-  // Optimization analysis remarks are active if the pass name is set to
-  // llvm::DiagnosticInfo::AlwasyPrint or if the -Rpass-analysis flag has a
-  // regular expression that matches the name of the pass name in \p D.
-
-  if (D.shouldAlwaysPrint() ||
-      (CodeGenOpts.OptimizationRemarkAnalysisPattern &&
-       CodeGenOpts.OptimizationRemarkAnalysisPattern->match(D.getPassName())))
-    EmitOptimizationMessage(
-        D, diag::remark_fe_backend_optimization_remark_analysis_aliasing);
-}
-
-void BackendConsumer::OptimizationFailureHandler(
-    const llvm::DiagnosticInfoOptimizationFailure &D) {
-  EmitOptimizationMessage(D, diag::warn_fe_backend_optimization_failure);
-}
-
-/// This function is invoked when the backend needs
-/// to report something to the user.
-void BackendConsumer::DiagnosticHandlerImpl(const DiagnosticInfo &DI) {
-  unsigned DiagID = diag::err_fe_inline_asm;
-  llvm::DiagnosticSeverity Severity = DI.getSeverity();
-  // Get the diagnostic ID based.
-  switch (DI.getKind()) {
-  case llvm::DK_InlineAsm:
-    if (InlineAsmDiagHandler(cast<DiagnosticInfoInlineAsm>(DI)))
-      return;
-    ComputeDiagID(Severity, inline_asm, DiagID);
-    break;
-  case llvm::DK_StackSize:
-    if (StackSizeDiagHandler(cast<DiagnosticInfoStackSize>(DI)))
-      return;
-    ComputeDiagID(Severity, backend_frame_larger_than, DiagID);
-    break;
-  case DK_Linker:
-    assert(CurLinkModule);
-    // FIXME: stop eating the warnings and notes.
-    if (Severity != DS_Error)
-      return;
-    DiagID = diag::err_fe_cannot_link_module;
-    break;
-  case llvm::DK_OptimizationRemark:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<OptimizationRemark>(DI));
-    return;
-  case llvm::DK_OptimizationRemarkMissed:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<OptimizationRemarkMissed>(DI));
-    return;
-  case llvm::DK_OptimizationRemarkAnalysis:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<OptimizationRemarkAnalysis>(DI));
-    return;
-  case llvm::DK_OptimizationRemarkAnalysisFPCommute:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<OptimizationRemarkAnalysisFPCommute>(DI));
-    return;
-  case llvm::DK_OptimizationRemarkAnalysisAliasing:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<OptimizationRemarkAnalysisAliasing>(DI));
-    return;
-  case llvm::DK_MachineOptimizationRemark:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<MachineOptimizationRemark>(DI));
-    return;
-  case llvm::DK_MachineOptimizationRemarkMissed:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<MachineOptimizationRemarkMissed>(DI));
-    return;
-  case llvm::DK_MachineOptimizationRemarkAnalysis:
-    // Optimization remarks are always handled completely by this
-    // handler. There is no generic way of emitting them.
-    OptimizationRemarkHandler(cast<MachineOptimizationRemarkAnalysis>(DI));
-    return;
-  case llvm::DK_OptimizationFailure:
-    // Optimization failures are always handled completely by this
-    // handler.
-    OptimizationFailureHandler(cast<DiagnosticInfoOptimizationFailure>(DI));
-    return;
-  case llvm::DK_Unsupported:
-    UnsupportedDiagHandler(cast<DiagnosticInfoUnsupported>(DI));
-    return;
-  default:
-    // Plugin IDs are not bound to any value as they are set dynamically.
-    ComputeDiagRemarkID(Severity, backend_plugin, DiagID);
-    break;
-  }
-  std::string MsgStorage;
-  {
-    raw_string_ostream Stream(MsgStorage);
-    DiagnosticPrinterRawOStream DP(Stream);
-    DI.print(DP);
-  }
-
-  if (DiagID == diag::err_fe_cannot_link_module) {
-    Diags.Report(diag::err_fe_cannot_link_module)
-        << CurLinkModule->getModuleIdentifier() << MsgStorage;
-    return;
-  }
-
-  // Report the backend message using the usual diagnostic mechanism.
-  FullSourceLoc Loc;
-  Diags.Report(Loc, DiagID).AddString(MsgStorage);
-}
-#undef ComputeDiagID
-
-CodeGenAction::CodeGenAction(unsigned _Act, LLVMContext *_VMContext)
-    : Act(_Act), VMContext(_VMContext ? _VMContext : new LLVMContext),
-      OwnsVMContext(!_VMContext) {}
-
-CodeGenAction::~CodeGenAction() {
-  TheModule.reset();
-  if (OwnsVMContext)
-    delete VMContext;
-}
-
-bool CodeGenAction::hasIRSupport() const { return true; }
-
-void CodeGenAction::EndSourceFileAction() {
-  // If the consumer creation failed, do nothing.
-  if (!getCompilerInstance().hasASTConsumer())
-    return;
-
-  // Steal the module from the consumer.
-  TheModule = BEConsumer->takeModule();
-}
-
-std::unique_ptr<llvm::Module> CodeGenAction::takeModule() {
-  return std::move(TheModule);
-}
-
-llvm::LLVMContext *CodeGenAction::takeLLVMContext() {
-  OwnsVMContext = false;
-  return VMContext;
-}
-
-static std::unique_ptr<raw_pwrite_stream>
-GetOutputStream(CompilerInstance &CI, StringRef InFile, BackendAction Action) {
-  switch (Action) {
-  case Backend_EmitAssembly:
-    return CI.createDefaultOutputFile(false, InFile, "s");
-  case Backend_EmitLL:
-    return CI.createDefaultOutputFile(false, InFile, "ll");
-  case Backend_EmitBC:
-    return CI.createDefaultOutputFile(true, InFile, "bc");
-  case Backend_EmitNothing:
-    return nullptr;
-  case Backend_EmitMCNull:
-    return CI.createNullOutputFile();
-  case Backend_EmitObj:
-    return CI.createDefaultOutputFile(true, InFile, "o");
-  }
-
-  llvm_unreachable("Invalid action!");
-}
-
-std::unique_ptr<ASTConsumer>
-CodeGenAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
-  BackendAction BA = static_cast<BackendAction>(Act);
-  std::unique_ptr<raw_pwrite_stream> OS = CI.takeOutputStream();
-  if (!OS)
-    OS = GetOutputStream(CI, InFile, BA);
-
-  if (BA != Backend_EmitNothing && !OS)
-    return nullptr;
-
-  // Load bitcode modules to link with, if we need to.
-  if (LinkModules.empty())
-    for (const CodeGenOptions::BitcodeFileToLink &F :
-         CI.getCodeGenOpts().LinkBitcodeFiles) {
-      auto BCBuf = CI.getFileManager().getBufferForFile(F.Filename);
-      if (!BCBuf) {
-        CI.getDiagnostics().Report(diag::err_cannot_open_file)
-            << F.Filename << BCBuf.getError().message();
-        LinkModules.clear();
-        return nullptr;
-      }
-
-      Expected<std::unique_ptr<llvm::Module>> ModuleOrErr =
-          getOwningLazyBitcodeModule(std::move(*BCBuf), *VMContext);
-      if (!ModuleOrErr) {
-        handleAllErrors(ModuleOrErr.takeError(), [&](ErrorInfoBase &EIB) {
-          CI.getDiagnostics().Report(diag::err_cannot_open_file)
-              << F.Filename << EIB.message();
-        });
-        LinkModules.clear();
-        return nullptr;
-      }
-      LinkModules.push_back({std::move(ModuleOrErr.get()), F.PropagateAttrs,
-                             F.Internalize, F.LinkFlags});
-    }
-
-  CoverageSourceInfo *CoverageInfo = nullptr;
-  // Add the preprocessor callback only when the coverage mapping is generated.
-  if (CI.getCodeGenOpts().CoverageMapping) {
-    CoverageInfo = new CoverageSourceInfo;
-    CI.getPreprocessor().addPPCallbacks(
-                                    std::unique_ptr<PPCallbacks>(CoverageInfo));
-  }
-
-  std::unique_ptr<BackendConsumer> Result(new BackendConsumer(
-      BA, CI.getDiagnostics(), CI.getHeaderSearchOpts(),
-      CI.getPreprocessorOpts(), CI.getCodeGenOpts(), CI.getTargetOpts(),
-      CI.getLangOpts(), CI.getFrontendOpts().ShowTimers, InFile,
-      std::move(LinkModules), std::move(OS), *VMContext, CoverageInfo));
-  BEConsumer = Result.get();
-
-  // Enable generating macro debug info only when debug info is not disabled and
-  // also macro debug info is enabled.
-  if (CI.getCodeGenOpts().getDebugInfo() != codegenoptions::NoDebugInfo &&
-      CI.getCodeGenOpts().MacroDebugInfo) {
-    std::unique_ptr<PPCallbacks> Callbacks =
-        llvm::make_unique<MacroPPCallbacks>(BEConsumer->getCodeGenerator(),
-                                            CI.getPreprocessor());
-    CI.getPreprocessor().addPPCallbacks(std::move(Callbacks));
-  }
-
-  return std::move(Result);
-}
-
-static void BitcodeInlineAsmDiagHandler(const llvm::SMDiagnostic &SM,
-                                         void *Context,
-                                         unsigned LocCookie) {
-  SM.print(nullptr, llvm::errs());
-
-  auto Diags = static_cast<DiagnosticsEngine *>(Context);
-  unsigned DiagID;
-  switch (SM.getKind()) {
-  case llvm::SourceMgr::DK_Error:
-    DiagID = diag::err_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Warning:
-    DiagID = diag::warn_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Note:
-    DiagID = diag::note_fe_inline_asm;
-    break;
-  case llvm::SourceMgr::DK_Remark:
-    llvm_unreachable("remarks unexpected");
-  }
-
-  Diags->Report(DiagID).AddString("cannot compile inline asm");
-}
-
-std::unique_ptr<llvm::Module>
-CodeGenAction::loadModule(MemoryBufferRef MBRef) {
-  CompilerInstance &CI = getCompilerInstance();
-  SourceManager &SM = CI.getSourceManager();
-
-  // For ThinLTO backend invocations, ensure that the context
-  // merges types based on ODR identifiers. We also need to read
-  // the correct module out of a multi-module bitcode file.
-  if (!CI.getCodeGenOpts().ThinLTOIndexFile.empty()) {
-    VMContext->enableDebugTypeODRUniquing();
-
-    auto DiagErrors = [&](Error E) -> std::unique_ptr<llvm::Module> {
-      unsigned DiagID =
-          CI.getDiagnostics().getCustomDiagID(DiagnosticsEngine::Error, "%0");
-      handleAllErrors(std::move(E), [&](ErrorInfoBase &EIB) {
-        CI.getDiagnostics().Report(DiagID) << EIB.message();
-      });
-      return {};
-    };
-
-    Expected<std::vector<BitcodeModule>> BMsOrErr = getBitcodeModuleList(MBRef);
-    if (!BMsOrErr)
-      return DiagErrors(BMsOrErr.takeError());
-    BitcodeModule *Bm = FindThinLTOModule(*BMsOrErr);
-    // We have nothing to do if the file contains no ThinLTO module. This is
-    // possible if ThinLTO compilation was not able to split module. Content of
-    // the file was already processed by indexing and will be passed to the
-    // linker using merged object file.
-    if (!Bm) {
-      auto M = llvm::make_unique<llvm::Module>("empty", *VMContext);
-      M->setTargetTriple(CI.getTargetOpts().Triple);
-      return M;
-    }
-    Expected<std::unique_ptr<llvm::Module>> MOrErr =
-        Bm->parseModule(*VMContext);
-    if (!MOrErr)
-      return DiagErrors(MOrErr.takeError());
-    return std::move(*MOrErr);
-  }
-
-  llvm::SMDiagnostic Err;
-  if (std::unique_ptr<llvm::Module> M = parseIR(MBRef, Err, *VMContext))
-    return M;
-
-  // Translate from the diagnostic info to the SourceManager location if
-  // available.
-  // TODO: Unify this with ConvertBackendLocation()
-  SourceLocation Loc;
-  if (Err.getLineNo() > 0) {
-    assert(Err.getColumnNo() >= 0);
-    Loc = SM.translateFileLineCol(SM.getFileEntryForID(SM.getMainFileID()),
-                                  Err.getLineNo(), Err.getColumnNo() + 1);
-  }
-
-  // Strip off a leading diagnostic code if there is one.
-  StringRef Msg = Err.getMessage();
-  if (Msg.startswith("error: "))
-    Msg = Msg.substr(7);
-
-  unsigned DiagID =
-      CI.getDiagnostics().getCustomDiagID(DiagnosticsEngine::Error, "%0");
-
-  CI.getDiagnostics().Report(Loc, DiagID) << Msg;
-  return {};
-}
-
-void CodeGenAction::ExecuteAction() {
-  // If this is an IR file, we have to treat it specially.
-  if (getCurrentFileKind().getLanguage() == InputKind::LLVM_IR) {
-    BackendAction BA = static_cast<BackendAction>(Act);
-    CompilerInstance &CI = getCompilerInstance();
-    std::unique_ptr<raw_pwrite_stream> OS =
-        GetOutputStream(CI, getCurrentFile(), BA);
-    if (BA != Backend_EmitNothing && !OS)
-      return;
-
-    bool Invalid;
-    SourceManager &SM = CI.getSourceManager();
-    FileID FID = SM.getMainFileID();
-    const llvm::MemoryBuffer *MainFile = SM.getBuffer(FID, &Invalid);
-    if (Invalid)
-      return;
-
-    TheModule = loadModule(*MainFile);
-    if (!TheModule)
-      return;
-
-    const TargetOptions &TargetOpts = CI.getTargetOpts();
-    if (TheModule->getTargetTriple() != TargetOpts.Triple) {
-      CI.getDiagnostics().Report(SourceLocation(),
-                                 diag::warn_fe_override_module)
-          << TargetOpts.Triple;
-      TheModule->setTargetTriple(TargetOpts.Triple);
-    }
-
-    EmbedBitcode(TheModule.get(), CI.getCodeGenOpts(),
-                 MainFile->getMemBufferRef());
-
-    LLVMContext &Ctx = TheModule->getContext();
-    Ctx.setInlineAsmDiagnosticHandler(BitcodeInlineAsmDiagHandler,
-                                      &CI.getDiagnostics());
-
-    EmitBackendOutput(CI.getDiagnostics(), CI.getHeaderSearchOpts(),
-                      CI.getCodeGenOpts(), TargetOpts, CI.getLangOpts(),
-                      CI.getTarget().getDataLayout(), TheModule.get(), BA,
-                      std::move(OS));
-    return;
-  }
-
-  // Otherwise follow the normal AST path.
-  this->ASTFrontendAction::ExecuteAction();
-}
-
-//
-
-void EmitAssemblyAction::anchor() { }
-EmitAssemblyAction::EmitAssemblyAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitAssembly, _VMContext) {}
-
-void EmitBCAction::anchor() { }
-EmitBCAction::EmitBCAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitBC, _VMContext) {}
-
-void EmitLLVMAction::anchor() { }
-EmitLLVMAction::EmitLLVMAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitLL, _VMContext) {}
-
-void EmitLLVMOnlyAction::anchor() { }
-EmitLLVMOnlyAction::EmitLLVMOnlyAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitNothing, _VMContext) {}
-
-void EmitCodeGenOnlyAction::anchor() { }
-EmitCodeGenOnlyAction::EmitCodeGenOnlyAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitMCNull, _VMContext) {}
-
-void EmitObjAction::anchor() { }
-EmitObjAction::EmitObjAction(llvm::LLVMContext *_VMContext)
-  : CodeGenAction(Backend_EmitObj, _VMContext) {}