chromium/third_party/spirv-tools/src/source/opt/redundancy_elimination.h

// Copyright (c) 2017 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_REDUNDANCY_ELIMINATION_H_
#define SOURCE_OPT_REDUNDANCY_ELIMINATION_H_

#include <map>

#include "source/opt/ir_context.h"
#include "source/opt/local_redundancy_elimination.h"
#include "source/opt/pass.h"
#include "source/opt/value_number_table.h"

namespace spvtools {
namespace opt {

// This pass implements total redundancy elimination.  This is the same as
// local redundancy elimination except it looks across basic block boundaries.
// An instruction, inst, is totally redundant if there is another instruction
// that dominates inst, and also computes the same value.
class RedundancyEliminationPass : public LocalRedundancyEliminationPass { … };

}  // namespace opt
}  // namespace spvtools

#endif  // SOURCE_OPT_REDUNDANCY_ELIMINATION_H_