Revert r241620 and follow-up commits while investigating linux buildbot failures.

llvm-svn: 241642

1 files changed, 0 insertions, 199 deletions

diff --git a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp b/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
deleted file mode 100644
index 58bd1035b7b..00000000000
--- a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
+++ /dev/null
@@ -1,199 +0,0 @@
-//===--- ObjectFilePCHContainerOperations.cpp -----------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/CodeGen/ObjectFilePCHContainerOperations.h"
-#include "CGDebugInfo.h"
-#include "CodeGenModule.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/DeclObjC.h"
-#include "clang/AST/Expr.h"
-#include "clang/AST/RecursiveASTVisitor.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/CodeGen/BackendUtil.h"
-#include "clang/Frontend/CodeGenOptions.h"
-#include "clang/Serialization/ASTWriter.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Bitcode/BitstreamReader.h"
-#include "llvm/DebugInfo/DWARF/DWARFContext.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Object/COFF.h"
-#include "llvm/Object/ObjectFile.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/TargetSelect.h"
-#include <memory>
-using namespace clang;
-
-#define DEBUG_TYPE "pchcontainer"
-
-namespace {
-class ModuleContainerGenerator : public ASTConsumer {
-  DiagnosticsEngine &Diags;
-  const std::string MainFileName;
-  ASTContext *Ctx;
-  const HeaderSearchOptions &HeaderSearchOpts;
-  const PreprocessorOptions &PreprocessorOpts;
-  CodeGenOptions CodeGenOpts;
-  const TargetOptions TargetOpts;
-  const LangOptions LangOpts;
-  std::unique_ptr<llvm::LLVMContext> VMContext;
-  std::unique_ptr<llvm::Module> M;
-  std::unique_ptr<CodeGen::CodeGenModule> Builder;
-  raw_pwrite_stream *OS;
-  std::shared_ptr<PCHBuffer> Buffer;
-
-public:
-  ModuleContainerGenerator(
-      DiagnosticsEngine &diags,
-      const HeaderSearchOptions &HSO, const PreprocessorOptions &PPO,
-      const TargetOptions &TO, const LangOptions &LO,
-      const std::string &MainFileName, const std::string &OutputFileName,
-      raw_pwrite_stream *OS, std::shared_ptr<PCHBuffer> Buffer)
-    : Diags(diags), HeaderSearchOpts(HSO), PreprocessorOpts(PPO),
-      TargetOpts(TO), LangOpts(LO), OS(OS),
-      Buffer(Buffer) {
-    // The debug info output isn't affected by CodeModel and
-    // ThreadModel, but the backend expects them to be nonempty.
-    CodeGenOpts.CodeModel = "default";
-    CodeGenOpts.ThreadModel = "single";
-    CodeGenOpts.setDebugInfo(CodeGenOptions::FullDebugInfo);
-    CodeGenOpts.SplitDwarfFile = OutputFileName;
-  }
-
-  virtual ~ModuleContainerGenerator() {}
-
-  void Initialize(ASTContext &Context) override {
-    Ctx = &Context;
-    VMContext.reset(new llvm::LLVMContext());
-    M.reset(new llvm::Module(MainFileName, *VMContext));
-    M->setDataLayout(Ctx->getTargetInfo().getTargetDescription());
-    Builder.reset(new CodeGen::CodeGenModule(*Ctx, HeaderSearchOpts,
-                                             PreprocessorOpts, CodeGenOpts,
-                                             *M, M->getDataLayout(), Diags));
-  }
-
-  /// Emit a container holding the serialized AST.
-  void HandleTranslationUnit(ASTContext &Ctx) override {
-    assert(M && VMContext && Builder);
-    // Delete these on function exit.
-    std::unique_ptr<llvm::LLVMContext> VMContext = std::move(this->VMContext);
-    std::unique_ptr<llvm::Module> M = std::move(this->M);
-    std::unique_ptr<CodeGen::CodeGenModule> Builder = std::move(this->Builder);
-
-    if (Diags.hasErrorOccurred())
-      return;
-
-    M->setTargetTriple(Ctx.getTargetInfo().getTriple().getTriple());
-    M->setDataLayout(Ctx.getTargetInfo().getTargetDescription());
-
-    // Finalize the Builder.
-    if (Builder)
-      Builder->Release();
-
-    // Initialize the backend if we haven't done so already.
-    llvm::InitializeAllTargetInfos();
-    llvm::InitializeAllTargets();
-    llvm::InitializeAllAsmPrinters();
-    llvm::InitializeAllTargetMCs();
-
-    // Ensure the target exists.
-    std::string Error;
-    auto Triple = Ctx.getTargetInfo().getTriple();
-    if (!llvm::TargetRegistry::lookupTarget(Triple.getTriple(), Error))
-      llvm::report_fatal_error(Error);
-
-    // Emit the serialized Clang AST into its own section.
-    assert(Buffer->IsComplete && "serialization did not complete");
-    auto &SerializedAST = Buffer->Data;
-    auto Size = SerializedAST.size();
-    auto Int8Ty = llvm::Type::getInt8Ty(*VMContext);
-    auto *Ty = llvm::ArrayType::get(Int8Ty, Size);
-    auto *Data = llvm::ConstantDataArray::
-      getString(*VMContext, StringRef(SerializedAST.data(), Size),
-                /*AddNull=*/false);
-    auto *ASTSym = new llvm::GlobalVariable(
-        *M, Ty, /*constant*/ true, llvm::GlobalVariable::InternalLinkage, Data,
-        "__clang_ast");
-    // The on-disk hashtable needs to be aligned.
-    ASTSym->setAlignment(8);
-
-    // Mach-O also needs a segment name.
-    if (Triple.isOSBinFormatMachO())
-      ASTSym->setSection("__CLANG,__clangast");
-    // COFF has an eight character length limit.
-    else if (Triple.isOSBinFormatCOFF())
-      ASTSym->setSection("clangast");
-    else
-      ASTSym->setSection("__clangast");
-
-    DEBUG({
-        // Print the IR for the PCH container to the debug output.
-        llvm::SmallString<0> Buffer;
-        llvm::raw_svector_ostream OS(Buffer);
-        clang::EmitBackendOutput(Diags, CodeGenOpts, TargetOpts, LangOpts,
-                                 Ctx.getTargetInfo().getTargetDescription(),
-                                 M.get(), BackendAction::Backend_EmitLL, &OS);
-        OS.flush();
-        llvm::dbgs()<<Buffer;
-      });
-
-    // Use the LLVM backend to emit the pch container.
-    clang::EmitBackendOutput(Diags, CodeGenOpts, TargetOpts, LangOpts,
-                             Ctx.getTargetInfo().getTargetDescription(),
-                             M.get(), BackendAction::Backend_EmitObj, OS);
-
-    // Make sure the pch container hits disk.
-    OS->flush();
-
-    // Free the memory for the temporary buffer.
-    llvm::SmallVector<char, 0> Empty;
-    SerializedAST = std::move(Empty);
-  }
-};
-}
-
-std::unique_ptr<ASTConsumer>
-ObjectFilePCHContainerOperations::CreatePCHContainerGenerator(
-    DiagnosticsEngine &Diags, const HeaderSearchOptions &HSO,
-    const PreprocessorOptions &PPO, const TargetOptions &TO,
-    const LangOptions &LO, const std::string &MainFileName,
-    const std::string &OutputFileName, llvm::raw_pwrite_stream *OS,
-    std::shared_ptr<PCHBuffer> Buffer) const {
- return llvm::make_unique<ModuleContainerGenerator>
-   (Diags, HSO, PPO, TO, LO, MainFileName, OutputFileName, OS, Buffer);
-}
-
-void ObjectFilePCHContainerOperations::ExtractPCH(
-    llvm::MemoryBufferRef Buffer, llvm::BitstreamReader &StreamFile) const {
-  if (auto OF = llvm::object::ObjectFile::createObjectFile(Buffer)) {
-    auto *Obj = OF.get().get();
-    bool IsCOFF = isa<llvm::object::COFFObjectFile>(Obj);
-    // Find the clang AST section in the container.
-    for (auto &Section : OF->get()->sections()) {
-      StringRef Name;
-      Section.getName(Name);
-      if ((!IsCOFF && Name == "__clangast") ||
-          ( IsCOFF && Name ==   "clangast")) {
-        StringRef Buf;
-        Section.getContents(Buf);
-        StreamFile.init((const unsigned char *)Buf.begin(),
-                        (const unsigned char *)Buf.end());
-        return;
-      }
-    }
-  }
-
-  // As a fallback, treat the buffer as a raw AST.
-  StreamFile.init((const unsigned char *)Buffer.getBufferStart(),
-                  (const unsigned char *)Buffer.getBufferEnd());
-  return;
-}