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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.
*/
#include "SqrtCanonicalizer.h"
#include <moco/IR/TFDialect.h>
namespace
{
bool canonicalize_sqrt(loco::Graph *graph, moco::TFSqrt *node)
{
/**
* @note This will replace TFSqrt node with Canonical EltwiseSqrt
*
* Before
* A --- TFSqrt -- C
* After
* +- TFSqrt --
* |
* A -+- EltwiseSqrt -- C
*
* Where
* A : features of TFSqrt
* C : a node that uses TFSqrt as an input
* TFSqrt is disconnected from C
*/
auto sqrt_node = graph->nodes()->create<loco::EltwiseSqrt>();
auto node_A = node->x();
// update connections
sqrt_node->input(node_A);
// replace node
replace(node).with(sqrt_node);
return true;
}
} // namespace
namespace moco
{
namespace tf
{
bool SqrtCanonicalizer::transform(TFSqrt *node) const
{
return canonicalize_sqrt(node->graph(), node);
}
} // namespace tf
} // namespace moco
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