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/*
* Copyright (c) 2018 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 __ENCO_TRANSFORM_DEAD_BAG_ELIMINATION_H__
#define __ENCO_TRANSFORM_DEAD_BAG_ELIMINATION_H__
#include "Code.h"
#include "Pass.h"
namespace enco
{
/**
* @brief Eliminate dead bags
*
* A bag is referred to as dead if it is neither input nor output, and has no read. If a bag is
* dead, it is unnecessary to updates its values as these values are never used.
*
* "eliminate_dead_bag" removes all the dead bags and its updaters from IR.
*/
void eliminate_dead_bag(enco::Code *code);
struct DeadBagEliminationPass final : public Pass
{
PASS_CTOR(DeadBagEliminationPass)
{
// DO NOTHING
}
void run(const SessionID &sess) const override { eliminate_dead_bag(code(sess)); }
};
} // namespace enco
#endif // __ENCO_TRANSFORM_DEAD_BAG_ELIMINATION_H__
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