Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- IRTransformLayer.h - Run all IR through a functor --------*- C++ -*-===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// Run all IR passed in through a user supplied functor.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H

#define LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H

#include "llvm/ADT/FunctionExtras.h"

#include "llvm/ExecutionEngine/JITSymbol.h"

#include "llvm/ExecutionEngine/Orc/Layer.h"

#include <memory>

namespace llvm {

namespace orc {

/// A layer that applies a transform to emitted modules.

/// The transform function is responsible for locking the ThreadSafeContext

/// before operating on the module.

class IRTransformLayer : public IRLayer {

public:

  using TransformFunction = unique_function<Expected<ThreadSafeModule>(

      ThreadSafeModule, MaterializationResponsibility &R)>;

  IRTransformLayer(ExecutionSession &ES, IRLayer &BaseLayer,

                   TransformFunction Transform = identityTransform);

  void setTransform(TransformFunction Transform) {

    this->Transform = std::move(Transform);

  }

  void emit(std::unique_ptr<MaterializationResponsibility> R,

            ThreadSafeModule TSM) override;

  static ThreadSafeModule identityTransform(ThreadSafeModule TSM,

                                            MaterializationResponsibility &R) {

    return TSM;

  }

private:

  IRLayer &BaseLayer;

  TransformFunction Transform;

};

} // end namespace orc

} // end namespace llvm

#endif // LLVM_EXECUTIONENGINE_ORC_IRTRANSFORMLAYER_H