1//===--- BackendUtil.h - LLVM Backend Utilities -----------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LLVM_CLANG_CODEGEN_BACKENDUTIL_H
11#define LLVM_CLANG_CODEGEN_BACKENDUTIL_H
12
13#include "clang/Basic/LLVM.h"
14#include "llvm/IR/ModuleSummaryIndex.h"
15#include <memory>
16
17namespace llvm {
18  class BitcodeModule;
19  template <typename T> class Expected;
20  class Module;
21  class MemoryBufferRef;
22}
23
24namespace clang {
25  class DiagnosticsEngine;
26  class HeaderSearchOptions;
27  class CodeGenOptions;
28  class TargetOptions;
29  class LangOptions;
30
31  enum BackendAction {
32    Backend_EmitAssembly,  ///< Emit native assembly files
33    Backend_EmitBC,        ///< Emit LLVM bitcode files
34    Backend_EmitLL,        ///< Emit human-readable LLVM assembly
35    Backend_EmitNothing,   ///< Don't emit anything (benchmarking mode)
36    Backend_EmitMCNull,    ///< Run CodeGen, but don't emit anything
37    Backend_EmitObj        ///< Emit native object files
38  };
39
40  void EmitBackendOutput(DiagnosticsEngine &Diags, const HeaderSearchOptions &,
41                         const CodeGenOptions &CGOpts,
42                         const TargetOptions &TOpts, const LangOptions &LOpts,
43                         const llvm::DataLayout &TDesc, llvm::Module *M,
44                         BackendAction Action,
45                         std::unique_ptr<raw_pwrite_stream> OS);
46
47  void EmbedBitcode(llvm::Module *M, const CodeGenOptions &CGOpts,
48                    llvm::MemoryBufferRef Buf);
49
50  llvm::Expected<llvm::BitcodeModule>
51  FindThinLTOModule(llvm::MemoryBufferRef MBRef);
52}
53
54#endif
55