1 files changed, 62 insertions, 0 deletions
diff --git a/include/llvm/ExecutionEngine/Orc/CompileUtils.h b/include/llvm/ExecutionEngine/Orc/CompileUtils.h
new file mode 100644
index 0000000..49a1fba
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+++ b/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