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 { EmbedBitcodeOptionsEmbedBitcodeOptions28 EmbedBitcodeOptions() : EmbedBitcodeOptions(false, false) {} EmbedBitcodeOptionsEmbedBitcodeOptions29 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: EmbedBitcodePass(EmbedBitcodeOptions Opts)42 EmbedBitcodePass(EmbedBitcodeOptions Opts) 43 : EmbedBitcodePass(Opts.IsThinLTO, Opts.EmitLTOSummary) {} EmbedBitcodePass(bool IsThinLTO,bool EmitLTOSummary)44 EmbedBitcodePass(bool IsThinLTO, bool EmitLTOSummary) 45 : IsThinLTO(IsThinLTO), EmitLTOSummary(EmitLTOSummary) {} 46 47 PreservedAnalyses run(Module &M, ModuleAnalysisManager &); 48 isRequired()49 static bool isRequired() { return true; } 50 }; 51 52 } // end namespace llvm. 53 54 #endif 55