chromium/third_party/spirv-tools/src/source/opt/dominator_tree.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_DOMINATOR_TREE_H_
#define SOURCE_OPT_DOMINATOR_TREE_H_

#include <algorithm>
#include <cstdint>
#include <map>
#include <utility>
#include <vector>

#include "source/opt/cfg.h"
#include "source/opt/tree_iterator.h"

namespace spvtools {
namespace opt {
// This helper struct forms the nodes in the tree, with each node containing its
// children. It also contains two values, for the pre and post indexes in the
// tree which are used to compare two nodes.
struct DominatorTreeNode { … };

// A class representing a tree of BasicBlocks in a given function, where each
// node is dominated by its parent.
class DominatorTree { … };

}  // namespace opt
}  // namespace spvtools

#endif  // SOURCE_OPT_DOMINATOR_TREE_H_