1 //===--- OrcLazyJIT.h - Basic Orc-based JIT for lazy execution --*- C++ -*-===//
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 // Simple Orc-based JIT. Uses the compile-on-demand layer to break up and
11 // lazily compile modules.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_TOOLS_LLI_ORCLAZYJIT_H
16 #define LLVM_TOOLS_LLI_ORCLAZYJIT_H
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
20 #include "llvm/ExecutionEngine/Orc/CompileUtils.h"
21 #include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
22 #include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
23 #include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
24 #include "llvm/IR/LLVMContext.h"
31 typedef orc::JITCompileCallbackManagerBase CompileCallbackMgr;
32 typedef orc::ObjectLinkingLayer<> ObjLayerT;
33 typedef orc::IRCompileLayer<ObjLayerT> CompileLayerT;
34 typedef orc::LazyEmittingLayer<CompileLayerT> LazyEmitLayerT;
35 typedef orc::CompileOnDemandLayer<LazyEmitLayerT,
36 CompileCallbackMgr> CODLayerT;
37 typedef typename CODLayerT::ModuleSetHandleT ModuleHandleT;
39 OrcLazyJIT(std::unique_ptr<TargetMachine> TM, LLVMContext &Context)
40 : Error(false), TM(std::move(TM)),
41 Mang(this->TM->getDataLayout()),
42 ObjectLayer([](){ return llvm::make_unique<SectionMemoryManager>(); }),
43 CompileLayer(ObjectLayer, orc::SimpleCompiler(*this->TM)),
44 LazyEmitLayer(CompileLayer),
45 CCMgr(createCallbackMgr(Triple(this->TM->getTargetTriple()), Context)),
46 CODLayer(LazyEmitLayer, *CCMgr) { }
48 bool Ok() const { return !Error; }
50 ModuleHandleT addModule(std::unique_ptr<Module> M) {
51 // Attach a data-layout if one isn't already present.
52 if (M->getDataLayout().isDefault())
53 M->setDataLayout(*TM->getDataLayout());
55 std::vector<std::unique_ptr<Module>> S;
56 S.push_back(std::move(M));
57 return CODLayer.addModuleSet(std::move(S));
60 orc::JITSymbol findSymbol(const std::string &Name) {
61 return CODLayer.findSymbol(mangle(Name), true);
64 orc::JITSymbol findSymbolIn(ModuleHandleT H, const std::string &Name) {
65 return CODLayer.findSymbolIn(H, mangle(Name), true);
70 std::unique_ptr<CompileCallbackMgr>
71 createCallbackMgr(Triple T, LLVMContext &Context);
73 std::string mangle(const std::string &Name) {
74 std::string MangledName;
76 raw_string_ostream MangledNameStream(MangledName);
77 Mang.getNameWithPrefix(MangledNameStream, Name);
83 std::unique_ptr<TargetMachine> TM;
86 ObjLayerT ObjectLayer;
87 CompileLayerT CompileLayer;
88 LazyEmitLayerT LazyEmitLayer;
89 std::unique_ptr<CompileCallbackMgr> CCMgr;
93 int runOrcLazyJIT(std::unique_ptr<Module> M, int ArgC, char* ArgV[]);
95 } // end namespace llvm