1 //===------ OrcLazyJIT.cpp - Basic Orc-based JIT for lazy execution -------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "OrcLazyJIT.h"
11 #include "llvm/ExecutionEngine/Orc/OrcTargetSupport.h"
15 OrcLazyJIT::CallbackManagerBuilder
16 OrcLazyJIT::createCallbackManagerBuilder(Triple T) {
17 switch (T.getArch()) {
18 default: return nullptr;
20 case Triple::x86_64: {
21 typedef orc::JITCompileCallbackManager<CompileLayerT,
22 orc::OrcX86_64> CCMgrT;
23 return [](CompileLayerT &CompileLayer, RuntimeDyld::MemoryManager &MemMgr,
24 LLVMContext &Context) {
25 return make_unique<CCMgrT>(CompileLayer, MemMgr, Context, 0, 64);
31 int llvm::runOrcLazyJIT(std::unique_ptr<Module> M, int ArgC, char* ArgV[]) {
32 auto TM = std::unique_ptr<TargetMachine>(EngineBuilder().selectTarget());
33 auto &Context = getGlobalContext();
34 auto CallbackMgrBuilder =
35 OrcLazyJIT::createCallbackManagerBuilder(Triple(TM->getTargetTriple()));
37 if (!CallbackMgrBuilder) {
38 errs() << "No callback manager available for target '"
39 << TM->getTargetTriple() << "'.\n";
43 OrcLazyJIT J(std::move(TM), Context, CallbackMgrBuilder);
45 auto MainHandle = J.addModule(std::move(M));
46 auto MainSym = J.findSymbolIn(MainHandle, "main");
49 errs() << "Could not find main function.\n";
53 typedef int (*MainFnPtr)(int, char*[]);
54 auto Main = reinterpret_cast<MainFnPtr>(
55 static_cast<uintptr_t>(MainSym.getAddress()));
57 return Main(ArgC, ArgV);