1//===--- BackendUtil.h - LLVM Backend Utilities -----------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_CODEGEN_BACKENDUTIL_H
10#define LLVM_CLANG_CODEGEN_BACKENDUTIL_H
11
12#include "clang/Basic/LLVM.h"
13#include "llvm/IR/ModuleSummaryIndex.h"
14#include <memory>
15
16namespace llvm {
17 class BitcodeModule;
18 template <typename T> class Expected;
19 class Module;
20 class MemoryBufferRef;
21}
22
23namespace clang {
24 class DiagnosticsEngine;
25 class HeaderSearchOptions;
26 class CodeGenOptions;
27 class TargetOptions;
28 class LangOptions;
29
30 enum BackendAction {
31 Backend_EmitAssembly, ///< Emit native assembly files
32 Backend_EmitBC, ///< Emit LLVM bitcode files
33 Backend_EmitLL, ///< Emit human-readable LLVM assembly
34 Backend_EmitNothing, ///< Don't emit anything (benchmarking mode)
35 Backend_EmitMCNull, ///< Run CodeGen, but don't emit anything
36 Backend_EmitObj ///< Emit native object files
37 };
38
39 void EmitBackendOutput(DiagnosticsEngine &Diags, const HeaderSearchOptions &,
40 const CodeGenOptions &CGOpts,
41 const TargetOptions &TOpts, const LangOptions &LOpts,
42 const llvm::DataLayout &TDesc, llvm::Module *M,
43 BackendAction Action,
44 std::unique_ptr<raw_pwrite_stream> OS);
45
46 void EmbedBitcode(llvm::Module *M, const CodeGenOptions &CGOpts,
47 llvm::MemoryBufferRef Buf);
48
49 llvm::Expected<llvm::BitcodeModule>
50 FindThinLTOModule(llvm::MemoryBufferRef MBRef);
51 llvm::BitcodeModule *
52 FindThinLTOModule(llvm::MutableArrayRef<llvm::BitcodeModule> BMs);
53}
54
55#endif
56