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417c5c172c
LLVM's include tree and the use of using declarations to hide the 'legacy' namespace for the old pass manager. This undoes the primary modules-hostile change I made to keep out-of-tree targets building. I sent an email inquiring about whether this would be reasonable to do at this phase and people seemed fine with it, so making it a reality. This should allow us to start bootstrapping with modules to a certain extent along with making it easier to mix and match headers in general. The updates to any code for users of LLVM are very mechanical. Switch from including "llvm/PassManager.h" to "llvm/IR/LegacyPassManager.h". Qualify the types which now produce compile errors with "legacy::". The most common ones are "PassManager", "PassManagerBase", and "FunctionPassManager". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229094 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
2.0 KiB
C++
60 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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/// @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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ObjStream.flush();
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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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}
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#endif // LLVM_EXECUTIONENGINE_ORC_COMPILEUTILS_H
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