46 lines · cpp
1//===- EmbedBitcodePass.cpp - Pass that embeds the bitcode into a global---===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/Transforms/IPO/EmbedBitcodePass.h"10#include "llvm/Bitcode/BitcodeWriter.h"11#include "llvm/Bitcode/BitcodeWriterPass.h"12#include "llvm/IR/PassManager.h"13#include "llvm/Pass.h"14#include "llvm/Support/ErrorHandling.h"15#include "llvm/Support/MemoryBufferRef.h"16#include "llvm/Support/raw_ostream.h"17#include "llvm/TargetParser/Triple.h"18#include "llvm/Transforms/IPO/ThinLTOBitcodeWriter.h"19#include "llvm/Transforms/Utils/ModuleUtils.h"20 21#include <string>22 23using namespace llvm;24 25PreservedAnalyses EmbedBitcodePass::run(Module &M, ModuleAnalysisManager &AM) {26 if (M.getGlobalVariable("llvm.embedded.module", /*AllowInternal=*/true))27 reportFatalUsageError("Can only embed the module once");28 29 Triple T(M.getTargetTriple());30 if (T.getObjectFormat() != Triple::ELF)31 reportFatalUsageError(32 "EmbedBitcode pass currently only supports ELF object format");33 34 std::string Data;35 raw_string_ostream OS(Data);36 if (IsThinLTO)37 ThinLTOBitcodeWriterPass(OS, /*ThinLinkOS=*/nullptr).run(M, AM);38 else39 BitcodeWriterPass(OS, /*ShouldPreserveUseListOrder=*/false, EmitLTOSummary)40 .run(M, AM);41 42 embedBufferInModule(M, MemoryBufferRef(Data, "ModuleData"), ".llvm.lto");43 44 return PreservedAnalyses::none();45}46