| //===-- CompileUtils.h - Utilities for compiling IR in the JIT --*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Contains utilities for compiling IR to object files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H |
| #define LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H |
| |
| #include "llvm/ExecutionEngine/ObjectMemoryBuffer.h" |
| #include "llvm/IR/LegacyPassManager.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/Object/ObjectFile.h" |
| #include "llvm/Target/TargetMachine.h" |
| |
| namespace llvm { |
| namespace orc { |
| |
| /// @brief Simple compile functor: Takes a single IR module and returns an |
| /// ObjectFile. |
| class SimpleCompiler { |
| public: |
| /// @brief Construct a simple compile functor with the given target. |
| SimpleCompiler(TargetMachine &TM) : TM(TM) {} |
| |
| /// @brief Compile a Module to an ObjectFile. |
| object::OwningBinary<object::ObjectFile> operator()(Module &M) const { |
| SmallVector<char, 0> ObjBufferSV; |
| raw_svector_ostream ObjStream(ObjBufferSV); |
| |
| legacy::PassManager PM; |
| MCContext *Ctx; |
| if (TM.addPassesToEmitMC(PM, Ctx, ObjStream)) |
| llvm_unreachable("Target does not support MC emission."); |
| PM.run(M); |
| std::unique_ptr<MemoryBuffer> ObjBuffer( |
| new ObjectMemoryBuffer(std::move(ObjBufferSV))); |
| Expected<std::unique_ptr<object::ObjectFile>> Obj = |
| object::ObjectFile::createObjectFile(ObjBuffer->getMemBufferRef()); |
| typedef object::OwningBinary<object::ObjectFile> OwningObj; |
| if (Obj) |
| return OwningObj(std::move(*Obj), std::move(ObjBuffer)); |
| // TODO: Actually report errors helpfully. |
| consumeError(Obj.takeError()); |
| return OwningObj(nullptr, nullptr); |
| } |
| |
| private: |
| TargetMachine &TM; |
| }; |
| |
| } // End namespace orc. |
| } // End namespace llvm. |
| |
| #endif // LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H |