1 | //===-- EmbedBitcodePass.h - Embeds bitcode into global ---------*- 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 | /// \file |
9 | /// |
10 | /// This file provides a pass which clones the current module and runs the |
11 | /// provided pass pipeline on the clone. The optimized module is stored into a |
12 | /// global variable in the `.llvm.lto` section. Primarily, this pass is used |
13 | /// to support the FatLTO pipeline, but could be used to generate a bitcode |
14 | /// section for any arbitrary pass pipeline without changing the current module. |
15 | /// |
16 | //===----------------------------------------------------------------------===// |
17 | // |
18 | #ifndef LLVM_TRANSFORMS_IPO_EMBEDBITCODEPASS_H |
19 | #define LLVM_TRANSFORMS_IPO_EMBEDBITCODEPASS_H |
20 | |
21 | #include "llvm/IR/PassManager.h" |
22 | |
23 | namespace llvm { |
24 | class Module; |
25 | class Pass; |
26 | |
27 | struct EmbedBitcodeOptions { |
28 | EmbedBitcodeOptions() : EmbedBitcodeOptions(false, false) {} |
29 | EmbedBitcodeOptions(bool IsThinLTO, bool EmitLTOSummary) |
30 | : IsThinLTO(IsThinLTO), EmitLTOSummary(EmitLTOSummary) {} |
31 | bool IsThinLTO; |
32 | bool EmitLTOSummary; |
33 | }; |
34 | |
35 | /// Pass embeds a copy of the module optimized with the provided pass pipeline |
36 | /// into a global variable. |
37 | class EmbedBitcodePass : public PassInfoMixin<EmbedBitcodePass> { |
38 | bool IsThinLTO; |
39 | bool EmitLTOSummary; |
40 | |
41 | public: |
42 | EmbedBitcodePass(EmbedBitcodeOptions Opts) |
43 | : EmbedBitcodePass(Opts.IsThinLTO, Opts.EmitLTOSummary) {} |
44 | EmbedBitcodePass(bool IsThinLTO, bool EmitLTOSummary) |
45 | : IsThinLTO(IsThinLTO), EmitLTOSummary(EmitLTOSummary) {} |
46 | |
47 | PreservedAnalyses run(Module &M, ModuleAnalysisManager &); |
48 | |
49 | static bool isRequired() { return true; } |
50 | }; |
51 | |
52 | } // end namespace llvm. |
53 | |
54 | #endif |
55 | |