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/*
* Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
*
* 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 __LOCO_IR_ALGORITHM_H__
#define __LOCO_IR_ALGORITHM_H__
#include "loco/IR/Node.h"
#include <set>
#include <vector>
namespace loco
{
/**
* @brief Generate postorder traversal sequence starting from "roots"
*
* HOW TO USE
*
* for (auto node : postorder_traversal(...))
* {
* ... node->do_something() ...
* }
*
*/
std::vector<loco::Node *> postorder_traversal(const std::vector<loco::Node *> &roots);
/**
* @brief Enumerate all the nodes required to compute "roots"
*/
std::set<loco::Node *> active_nodes(const std::vector<loco::Node *> &roots);
} // namespace loco
#endif // __LOCO_IR_ALGORITHM_H__
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