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

// Copyright (c) 2021 Google LLC.
//
// 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_DATAFLOW_H_
#define SOURCE_OPT_DATAFLOW_H_

#include <queue>
#include <unordered_map>
#include <vector>

#include "source/opt/instruction.h"
#include "source/opt/ir_context.h"

namespace spvtools {
namespace opt {

// Generic data-flow analysis.
// Maintains a worklist of instructions to process and processes them in a
// specified order. See also ForwardDataFlowAnalysis, which is specialized for
// forward data-flow analysis.
class DataFlowAnalysis { … };

// A generic data flow analysis, specialized for forward analysis.
class ForwardDataFlowAnalysis : public DataFlowAnalysis { … };

}  // namespace opt
}  // namespace spvtools

#endif  // SOURCE_OPT_DATAFLOW_H_