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Diffstat (limited to 'contrib/llvm/include/llvm/ExecutionEngine/Orc/CompileUtils.h')
-rw-r--r-- | contrib/llvm/include/llvm/ExecutionEngine/Orc/CompileUtils.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/contrib/llvm/include/llvm/ExecutionEngine/Orc/CompileUtils.h b/contrib/llvm/include/llvm/ExecutionEngine/Orc/CompileUtils.h new file mode 100644 index 0000000..49a1fba --- /dev/null +++ b/contrib/llvm/include/llvm/ExecutionEngine/Orc/CompileUtils.h @@ -0,0 +1,62 @@ +//===-- 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); + ObjStream.flush(); + std::unique_ptr<MemoryBuffer> ObjBuffer( + new ObjectMemoryBuffer(std::move(ObjBufferSV))); + ErrorOr<std::unique_ptr<object::ObjectFile>> Obj = + object::ObjectFile::createObjectFile(ObjBuffer->getMemBufferRef()); + // TODO: Actually report errors helpfully. + typedef object::OwningBinary<object::ObjectFile> OwningObj; + if (Obj) + return OwningObj(std::move(*Obj), std::move(ObjBuffer)); + return OwningObj(nullptr, nullptr); + } + +private: + TargetMachine &TM; +}; + +} // End namespace orc. +} // End namespace llvm. + +#endif // LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H |