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//===--- BackendUtil.h - LLVM Backend Utilities -----------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_CODEGEN_BACKENDUTIL_H
#define LLVM_CLANG_CODEGEN_BACKENDUTIL_H

#include "clang/Basic/LLVM.h"
#include "llvm/IR/FunctionInfo.h"
#include <memory>

namespace llvm {
  class Module;
}

namespace clang {
  class DiagnosticsEngine;
  class CodeGenOptions;
  class TargetOptions;
  class LangOptions;

  enum BackendAction {
    Backend_EmitAssembly,  ///< Emit native assembly files
    Backend_EmitBC,        ///< Emit LLVM bitcode files
    Backend_EmitLL,        ///< Emit human-readable LLVM assembly
    Backend_EmitNothing,   ///< Don't emit anything (benchmarking mode)
    Backend_EmitMCNull,    ///< Run CodeGen, but don't emit anything
    Backend_EmitObj        ///< Emit native object files
  };

  void
  EmitBackendOutput(DiagnosticsEngine &Diags, const CodeGenOptions &CGOpts,
                    const TargetOptions &TOpts, const LangOptions &LOpts,
                    StringRef TDesc, llvm::Module *M, BackendAction Action,
                    raw_pwrite_stream *OS,
                    std::unique_ptr<llvm::FunctionInfoIndex> Index = nullptr);
}

#endif
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