| //===------ OrcLazyJIT.cpp - Basic Orc-based JIT for lazy execution -------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "OrcLazyJIT.h" |
| #include "llvm/ExecutionEngine/Orc/OrcTargetSupport.h" |
| |
| using namespace llvm; |
| |
| std::unique_ptr<OrcLazyJIT::CompileCallbackMgr> |
| OrcLazyJIT::createCallbackMgr(Triple T, LLVMContext &Context) { |
| switch (T.getArch()) { |
| default: |
| // Flag error. |
| Error = true; |
| return nullptr; |
| |
| case Triple::x86_64: { |
| typedef orc::JITCompileCallbackManager<CompileLayerT, |
| orc::OrcX86_64> CCMgrT; |
| return make_unique<CCMgrT>(CompileLayer, Context, 0, 64); |
| } |
| } |
| } |
| |
| int llvm::runOrcLazyJIT(std::unique_ptr<Module> M, int ArgC, char* ArgV[]) { |
| OrcLazyJIT J(std::unique_ptr<TargetMachine>(EngineBuilder().selectTarget()), |
| getGlobalContext()); |
| |
| if (!J.Ok()) { |
| errs() << "Could not construct JIT.\n"; |
| return 1; |
| } |
| |
| auto MainHandle = J.addModule(std::move(M)); |
| auto MainSym = J.findSymbolIn(MainHandle, "main"); |
| |
| if (!MainSym) { |
| errs() << "Could not find main function.\n"; |
| return 1; |
| } |
| |
| typedef int (*MainFnPtr)(int, char*[]); |
| auto Main = reinterpret_cast<MainFnPtr>( |
| static_cast<uintptr_t>(MainSym.getAddress())); |
| |
| return Main(ArgC, ArgV); |
| } |