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/*
* Copyright (c) 2021 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.
*/
#include "luci/Pass/RemoveQuantDequantSeqPass.h"
#include <luci/IR/CircleNodes.h>
namespace
{
bool remove_quant_dequant(luci::CircleDequantize *dequant)
{
assert(dequant != nullptr);
auto quantize = dynamic_cast<luci::CircleQuantize *>(dequant->input());
if (quantize == nullptr)
return false;
auto input_node = loco::must_cast<luci::CircleNode *>(quantize->input());
replace(dequant).with(input_node);
return true;
}
} // namespace
namespace luci
{
/**
* BEFORE
*
* [CircleNode]
* |
* [CircleQuantize]
* |
* [CircleDequantize]
* |
* [CircleNode]
*
* AFTER
*
* [CircleNode] [CircleQuantize]
* | |
* [CircleNode] [CircleDequantize]
*
* CircleQuant-CircleDequant sequance will be removed from the output graph
*/
bool RemoveQuantDequantSeqPass::run(loco::Graph *g)
{
bool changed = false;
for (auto node : loco::active_nodes(loco::output_nodes(g)))
{
auto target_node = dynamic_cast<luci::CircleDequantize *>(node);
if (target_node != nullptr)
{
if (remove_quant_dequant(target_node))
changed = true;
}
}
return changed;
}
} // namespace luci
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