1//===- ThinLTOBitcodeWriter.h - Bitcode writing pass for ThinLTO ----------===//
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// This pass prepares a module containing type metadata for ThinLTO by splitting
11// it into regular and thin LTO parts if possible, and writing both parts to
12// a multi-module bitcode file. Modules that do not contain type metadata are
13// written unmodified as a single module.
14//
15//===----------------------------------------------------------------------===//
16
17#ifndef LLVM_TRANSFORMS_IPO_THINLTOBITCODEWRITER_H
18#define LLVM_TRANSFORMS_IPO_THINLTOBITCODEWRITER_H
19
20#include <llvm/IR/PassManager.h>
21#include <llvm/Support/raw_ostream.h>
22
23namespace llvm {
24
25class ThinLTOBitcodeWriterPass
26    : public PassInfoMixin<ThinLTOBitcodeWriterPass> {
27  raw_ostream &OS;
28  raw_ostream *ThinLinkOS;
29
30public:
31  // Writes bitcode to OS. Also write thin link file to ThinLinkOS, if
32  // it's not nullptr.
33  ThinLTOBitcodeWriterPass(raw_ostream &OS, raw_ostream *ThinLinkOS)
34      : OS(OS), ThinLinkOS(ThinLinkOS) {}
35
36  PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
37};
38
39} // namespace llvm
40
41#endif
42