// Copyright (c) 2018 Google Inc.

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//     http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#ifndef SOURCE_OPT_WORKAROUND1209_H_

#define SOURCE_OPT_WORKAROUND1209_H_

#include "source/opt/pass.h"

namespace spvtools {

namespace opt {

// See optimizer.hpp for documentation.

class Workaround1209 : public Pass {

 public:

  const char* name() const override { return "workaround-1209"; }

  Status Process() override;

 private:

  // There is at least one driver where an OpUnreachable found in a loop is not

  // handled correctly.  Workaround that by changing the OpUnreachable into a

  // branch to the loop merge.

  //

  // Returns true if the code changed.

  bool RemoveOpUnreachableInLoops();

};

}  // namespace opt

}  // namespace spvtools

#endif  // SOURCE_OPT_WORKAROUND1209_H_