1//===- ThinLTOBitcodeWriter.h - Bitcode writing pass for ThinLTO ----------===//
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// This pass prepares a module containing type metadata for ThinLTO by splitting
10// it into regular and thin LTO parts if possible, and writing both parts to
11// a multi-module bitcode file. Modules that do not contain type metadata are
12// written unmodified as a single module.
13//
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_TRANSFORMS_IPO_THINLTOBITCODEWRITER_H
17#define LLVM_TRANSFORMS_IPO_THINLTOBITCODEWRITER_H
18
19#include <llvm/IR/PassManager.h>
20
21namespace llvm {
22class Module;
23class raw_ostream;
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 static bool isRequired() { return true; }
39};
40
41} // namespace llvm
42
43#endif
44

source code of llvm/include/llvm/Transforms/IPO/ThinLTOBitcodeWriter.h