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 | |
21 | namespace llvm { |
22 | class Module; |
23 | class raw_ostream; |
24 | |
25 | class ThinLTOBitcodeWriterPass |
26 | : public PassInfoMixin<ThinLTOBitcodeWriterPass> { |
27 | raw_ostream &OS; |
28 | raw_ostream *ThinLinkOS; |
29 | |
30 | public: |
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 | |