104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
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//===- KaleidoscopeJIT.h - A simple JIT for Kaleidoscope --------*- C++ -*-===//
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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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//
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// Contains a simple JIT definition for use in the kaleidoscope tutorials.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
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#define LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ExecutionEngine/JITSymbol.h"
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#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
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#include "llvm/ExecutionEngine/Orc/Core.h"
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#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
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#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
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#include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"
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#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
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#include "llvm/ExecutionEngine/Orc/TargetProcessControl.h"
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#include "llvm/ExecutionEngine/SectionMemoryManager.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/LLVMContext.h"
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#include <memory>
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namespace llvm {
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namespace orc {
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class KaleidoscopeJIT {
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private:
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std::unique_ptr<TargetProcessControl> TPC;
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std::unique_ptr<ExecutionSession> ES;
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DataLayout DL;
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MangleAndInterner Mangle;
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RTDyldObjectLinkingLayer ObjectLayer;
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IRCompileLayer CompileLayer;
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JITDylib &MainJD;
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public:
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KaleidoscopeJIT(std::unique_ptr<TargetProcessControl> TPC,
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std::unique_ptr<ExecutionSession> ES,
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JITTargetMachineBuilder JTMB, DataLayout DL)
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: TPC(std::move(TPC)), ES(std::move(ES)), DL(std::move(DL)),
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Mangle(*this->ES, this->DL),
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ObjectLayer(*this->ES,
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[]() { return std::make_unique<SectionMemoryManager>(); }),
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CompileLayer(*this->ES, ObjectLayer,
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std::make_unique<ConcurrentIRCompiler>(std::move(JTMB))),
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MainJD(this->ES->createBareJITDylib("<main>")) {
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MainJD.addGenerator(
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cantFail(DynamicLibrarySearchGenerator::GetForCurrentProcess(
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DL.getGlobalPrefix())));
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}
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~KaleidoscopeJIT() {
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if (auto Err = ES->endSession())
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ES->reportError(std::move(Err));
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}
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static Expected<std::unique_ptr<KaleidoscopeJIT>> Create() {
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auto SSP = std::make_shared<SymbolStringPool>();
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auto TPC = SelfTargetProcessControl::Create(SSP);
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if (!TPC)
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return TPC.takeError();
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auto ES = std::make_unique<ExecutionSession>(std::move(SSP));
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JITTargetMachineBuilder JTMB((*TPC)->getTargetTriple());
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auto DL = JTMB.getDefaultDataLayoutForTarget();
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if (!DL)
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return DL.takeError();
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return std::make_unique<KaleidoscopeJIT>(std::move(*TPC), std::move(ES),
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std::move(JTMB), std::move(*DL));
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}
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const DataLayout &getDataLayout() const { return DL; }
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JITDylib &getMainJITDylib() { return MainJD; }
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Error addModule(ThreadSafeModule TSM, ResourceTrackerSP RT = nullptr) {
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if (!RT)
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RT = MainJD.getDefaultResourceTracker();
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return CompileLayer.add(RT, std::move(TSM));
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}
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Expected<JITEvaluatedSymbol> lookup(StringRef Name) {
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return ES->lookup({&MainJD}, Mangle(Name.str()));
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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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#endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
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