bf985258b9
The existing memory manager API can not be shared between objects when linking concurrently (since there is no way to know which concurrent allocations were performed on behalf of which object, and hence which allocations would be safe to finalize when finalizeMemory is called). For now, we can work around this by requiring a new memory manager for each object. This change only affects the concurrent version of the ORC APIs. llvm-svn: 341579
142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
//===--------- LLJIT.cpp - An ORC-based JIT for compiling LLVM IR ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/LLJIT.h"
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#include "llvm/ExecutionEngine/Orc/OrcError.h"
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#include "llvm/ExecutionEngine/SectionMemoryManager.h"
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#include "llvm/IR/Mangler.h"
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namespace llvm {
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namespace orc {
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Expected<std::unique_ptr<LLJIT>>
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LLJIT::Create(std::unique_ptr<ExecutionSession> ES,
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std::unique_ptr<TargetMachine> TM, DataLayout DL) {
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return std::unique_ptr<LLJIT>(
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new LLJIT(std::move(ES), std::move(TM), std::move(DL)));
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}
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Error LLJIT::defineAbsolute(StringRef Name, JITEvaluatedSymbol Sym) {
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auto InternedName = ES->getSymbolStringPool().intern(Name);
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SymbolMap Symbols({{InternedName, Sym}});
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return Main.define(absoluteSymbols(std::move(Symbols)));
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}
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Error LLJIT::addIRModule(JITDylib &JD, std::unique_ptr<Module> M) {
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assert(M && "Can not add null module");
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if (auto Err = applyDataLayout(*M))
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return Err;
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auto K = ES->allocateVModule();
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return CompileLayer.add(JD, K, std::move(M));
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}
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Error LLJIT::addObjectFile(JITDylib &JD, std::unique_ptr<MemoryBuffer> Obj) {
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assert(Obj && "Can not add null object");
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auto K = ES->allocateVModule();
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return ObjLinkingLayer.add(JD, K, std::move(Obj));
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}
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Expected<JITEvaluatedSymbol> LLJIT::lookupLinkerMangled(JITDylib &JD,
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StringRef Name) {
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return llvm::orc::lookup({&JD}, ES->getSymbolStringPool().intern(Name));
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}
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LLJIT::LLJIT(std::unique_ptr<ExecutionSession> ES,
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std::unique_ptr<TargetMachine> TM, DataLayout DL)
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: ES(std::move(ES)), Main(this->ES->createJITDylib("main")),
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TM(std::move(TM)), DL(std::move(DL)),
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ObjLinkingLayer(*this->ES,
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[this](VModuleKey K) { return getMemoryManager(K); }),
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CompileLayer(*this->ES, ObjLinkingLayer, SimpleCompiler(*this->TM)),
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CtorRunner(Main), DtorRunner(Main) {}
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std::unique_ptr<RuntimeDyld::MemoryManager>
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LLJIT::getMemoryManager(VModuleKey K) {
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return llvm::make_unique<SectionMemoryManager>();
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}
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std::string LLJIT::mangle(StringRef UnmangledName) {
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std::string MangledName;
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{
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raw_string_ostream MangledNameStream(MangledName);
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Mangler::getNameWithPrefix(MangledNameStream, UnmangledName, DL);
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}
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return MangledName;
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}
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Error LLJIT::applyDataLayout(Module &M) {
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if (M.getDataLayout().isDefault())
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M.setDataLayout(DL);
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if (M.getDataLayout() != DL)
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return make_error<StringError>(
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"Added modules have incompatible data layouts",
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inconvertibleErrorCode());
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return Error::success();
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}
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void LLJIT::recordCtorDtors(Module &M) {
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CtorRunner.add(getConstructors(M));
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DtorRunner.add(getDestructors(M));
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}
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Expected<std::unique_ptr<LLLazyJIT>>
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LLLazyJIT::Create(std::unique_ptr<ExecutionSession> ES,
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std::unique_ptr<TargetMachine> TM, DataLayout DL,
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LLVMContext &Ctx) {
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const Triple &TT = TM->getTargetTriple();
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auto CCMgr = createLocalCompileCallbackManager(TT, *ES, 0);
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if (!CCMgr)
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return make_error<StringError>(
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std::string("No callback manager available for ") + TT.str(),
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inconvertibleErrorCode());
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auto ISMBuilder = createLocalIndirectStubsManagerBuilder(TT);
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if (!ISMBuilder)
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return make_error<StringError>(
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std::string("No indirect stubs manager builder for ") + TT.str(),
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inconvertibleErrorCode());
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return std::unique_ptr<LLLazyJIT>(
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new LLLazyJIT(std::move(ES), std::move(TM), std::move(DL), Ctx,
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std::move(CCMgr), std::move(ISMBuilder)));
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}
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Error LLLazyJIT::addLazyIRModule(JITDylib &JD, std::unique_ptr<Module> M) {
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assert(M && "Can not add null module");
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if (auto Err = applyDataLayout(*M))
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return Err;
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makeAllSymbolsExternallyAccessible(*M);
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recordCtorDtors(*M);
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auto K = ES->allocateVModule();
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return CODLayer.add(JD, K, std::move(M));
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}
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LLLazyJIT::LLLazyJIT(
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std::unique_ptr<ExecutionSession> ES, std::unique_ptr<TargetMachine> TM,
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DataLayout DL, LLVMContext &Ctx,
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std::unique_ptr<JITCompileCallbackManager> CCMgr,
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std::function<std::unique_ptr<IndirectStubsManager>()> ISMBuilder)
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: LLJIT(std::move(ES), std::move(TM), std::move(DL)),
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CCMgr(std::move(CCMgr)), TransformLayer(*this->ES, CompileLayer),
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CODLayer(*this->ES, TransformLayer, *this->CCMgr, std::move(ISMBuilder),
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[&]() -> LLVMContext & { return Ctx; }) {}
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} // End namespace orc.
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} // End namespace llvm.
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