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4b885ee8e2
After r244870 flush() will only compare two null pointers and return, doing nothing but wasting run time. The call is not required any more as the stream and its SmallString are always in sync. Thanks to David Blaikie for reviewing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244928 91177308-0d34-0410-b5e6-96231b3b80d8
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
//===-- CompileUtils.h - Utilities for compiling IR in the JIT --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Contains utilities for compiling IR to object files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H
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#define LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H
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#include "llvm/ExecutionEngine/ObjectMemoryBuffer.h"
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#include "llvm/IR/LegacyPassManager.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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namespace orc {
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/// @brief Simple compile functor: Takes a single IR module and returns an
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/// ObjectFile.
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class SimpleCompiler {
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public:
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/// @brief Construct a simple compile functor with the given target.
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SimpleCompiler(TargetMachine &TM) : TM(TM) {}
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/// @brief Compile a Module to an ObjectFile.
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object::OwningBinary<object::ObjectFile> operator()(Module &M) const {
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SmallVector<char, 0> ObjBufferSV;
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raw_svector_ostream ObjStream(ObjBufferSV);
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legacy::PassManager PM;
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MCContext *Ctx;
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if (TM.addPassesToEmitMC(PM, Ctx, ObjStream))
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llvm_unreachable("Target does not support MC emission.");
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PM.run(M);
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std::unique_ptr<MemoryBuffer> ObjBuffer(
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new ObjectMemoryBuffer(std::move(ObjBufferSV)));
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ErrorOr<std::unique_ptr<object::ObjectFile>> Obj =
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object::ObjectFile::createObjectFile(ObjBuffer->getMemBufferRef());
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// TODO: Actually report errors helpfully.
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typedef object::OwningBinary<object::ObjectFile> OwningObj;
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if (Obj)
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return OwningObj(std::move(*Obj), std::move(ObjBuffer));
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return OwningObj(nullptr, nullptr);
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}
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private:
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TargetMachine &TM;
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};
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} // End namespace orc.
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} // End namespace llvm.
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#endif // LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H
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