1 //===- KaleidoscopeJIT.h - A simple JIT for Kaleidoscope --------*- 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 // 9 // Contains a simple JIT definition for use in the kaleidoscope tutorials. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H 14 #define LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H 15 16 #include "llvm/ADT/StringRef.h" 17 #include "llvm/ExecutionEngine/JITSymbol.h" 18 #include "llvm/ExecutionEngine/Orc/CompileUtils.h" 19 #include "llvm/ExecutionEngine/Orc/Core.h" 20 #include "llvm/ExecutionEngine/Orc/ExecutionUtils.h" 21 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h" 22 #include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h" 23 #include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h" 24 #include "llvm/ExecutionEngine/Orc/TargetProcessControl.h" 25 #include "llvm/ExecutionEngine/SectionMemoryManager.h" 26 #include "llvm/IR/DataLayout.h" 27 #include "llvm/IR/LLVMContext.h" 28 #include <memory> 29 30 namespace llvm { 31 namespace orc { 32 33 class KaleidoscopeJIT { 34 private: 35 std::unique_ptr<TargetProcessControl> TPC; 36 std::unique_ptr<ExecutionSession> ES; 37 38 DataLayout DL; 39 MangleAndInterner Mangle; 40 41 RTDyldObjectLinkingLayer ObjectLayer; 42 IRCompileLayer CompileLayer; 43 44 JITDylib &MainJD; 45 46 public: KaleidoscopeJIT(std::unique_ptr<TargetProcessControl> TPC,std::unique_ptr<ExecutionSession> ES,JITTargetMachineBuilder JTMB,DataLayout DL)47 KaleidoscopeJIT(std::unique_ptr<TargetProcessControl> TPC, 48 std::unique_ptr<ExecutionSession> ES, 49 JITTargetMachineBuilder JTMB, DataLayout DL) 50 : TPC(std::move(TPC)), ES(std::move(ES)), DL(std::move(DL)), 51 Mangle(*this->ES, this->DL), 52 ObjectLayer(*this->ES, 53 []() { return std::make_unique<SectionMemoryManager>(); }), 54 CompileLayer(*this->ES, ObjectLayer, 55 std::make_unique<ConcurrentIRCompiler>(std::move(JTMB))), 56 MainJD(this->ES->createBareJITDylib("<main>")) { 57 MainJD.addGenerator( 58 cantFail(DynamicLibrarySearchGenerator::GetForCurrentProcess( 59 DL.getGlobalPrefix()))); 60 } 61 ~KaleidoscopeJIT()62 ~KaleidoscopeJIT() { 63 if (auto Err = ES->endSession()) 64 ES->reportError(std::move(Err)); 65 } 66 Create()67 static Expected<std::unique_ptr<KaleidoscopeJIT>> Create() { 68 auto SSP = std::make_shared<SymbolStringPool>(); 69 auto TPC = SelfTargetProcessControl::Create(SSP); 70 if (!TPC) 71 return TPC.takeError(); 72 73 auto ES = std::make_unique<ExecutionSession>(std::move(SSP)); 74 75 JITTargetMachineBuilder JTMB((*TPC)->getTargetTriple()); 76 77 auto DL = JTMB.getDefaultDataLayoutForTarget(); 78 if (!DL) 79 return DL.takeError(); 80 81 return std::make_unique<KaleidoscopeJIT>(std::move(*TPC), std::move(ES), 82 std::move(JTMB), std::move(*DL)); 83 } 84 getDataLayout()85 const DataLayout &getDataLayout() const { return DL; } 86 getMainJITDylib()87 JITDylib &getMainJITDylib() { return MainJD; } 88 89 Error addModule(ThreadSafeModule TSM, ResourceTrackerSP RT = nullptr) { 90 if (!RT) 91 RT = MainJD.getDefaultResourceTracker(); 92 return CompileLayer.add(RT, std::move(TSM)); 93 } 94 lookup(StringRef Name)95 Expected<JITEvaluatedSymbol> lookup(StringRef Name) { 96 return ES->lookup({&MainJD}, Mangle(Name.str())); 97 } 98 }; 99 100 } // end namespace orc 101 } // end namespace llvm 102 103 #endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H 104