65 lines
2.0 KiB
C++
65 lines
2.0 KiB
C++
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//===-- ThreadSafeModule.cpp - Thread safe Module, Context, and Utilities
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//h-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/ThreadSafeModule.h"
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#include "llvm/Bitcode/BitcodeReader.h"
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#include "llvm/Bitcode/BitcodeWriter.h"
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#include "llvm/Transforms/Utils/Cloning.h"
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namespace llvm {
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namespace orc {
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ThreadSafeModule cloneToNewContext(const ThreadSafeModule &TSM,
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GVPredicate ShouldCloneDef,
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GVModifier UpdateClonedDefSource) {
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assert(TSM && "Can not clone null module");
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if (!ShouldCloneDef)
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ShouldCloneDef = [](const GlobalValue &) { return true; };
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return TSM.withModuleDo([&](Module &M) {
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SmallVector<char, 1> ClonedModuleBuffer;
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{
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std::set<GlobalValue *> ClonedDefsInSrc;
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ValueToValueMapTy VMap;
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auto Tmp = CloneModule(M, VMap, [&](const GlobalValue *GV) {
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if (ShouldCloneDef(*GV)) {
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ClonedDefsInSrc.insert(const_cast<GlobalValue *>(GV));
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return true;
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}
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return false;
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});
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if (UpdateClonedDefSource)
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for (auto *GV : ClonedDefsInSrc)
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UpdateClonedDefSource(*GV);
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BitcodeWriter BCWriter(ClonedModuleBuffer);
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BCWriter.writeModule(*Tmp);
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BCWriter.writeSymtab();
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BCWriter.writeStrtab();
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}
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MemoryBufferRef ClonedModuleBufferRef(
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StringRef(ClonedModuleBuffer.data(), ClonedModuleBuffer.size()),
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"cloned module buffer");
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ThreadSafeContext NewTSCtx(std::make_unique<LLVMContext>());
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auto ClonedModule = cantFail(
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parseBitcodeFile(ClonedModuleBufferRef, *NewTSCtx.getContext()));
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ClonedModule->setModuleIdentifier(M.getName());
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return ThreadSafeModule(std::move(ClonedModule), std::move(NewTSCtx));
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});
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}
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} // end namespace orc
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} // end namespace llvm
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