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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 __TF_ELTWISE_BINARY_CANONICALIZE_HELPER_H__
#define __TF_ELTWISE_BINARY_CANONICALIZE_HELPER_H__
#include <moco/IR/TFDialect.h>
#include <moco/IR/TFNodes.h>
#include "CanonicalEltwiseInputConnector.h"
#include "BroadcastHelper.h"
#include <loco/IR/Nodes.h>
#include <loco/IR/NodeShape.h>
#include <loco/Service/ShapeInference.h>
#include <fipe.h>
namespace
{
template <typename TFNodeT> struct EltwiseBinaryCanonicalizationRule;
template <> struct EltwiseBinaryCanonicalizationRule<moco::TFAdd>
{
using CanonicalNode = loco::EltwiseAdd;
};
template <> struct EltwiseBinaryCanonicalizationRule<moco::TFSub>
{
using CanonicalNode = loco::EltwiseSub;
};
template <> struct EltwiseBinaryCanonicalizationRule<moco::TFMaximum>
{
using CanonicalNode = loco::EltwiseMax;
};
template <> struct EltwiseBinaryCanonicalizationRule<moco::TFMul>
{
using CanonicalNode = loco::EltwiseMul;
};
template <> struct EltwiseBinaryCanonicalizationRule<moco::TFRealDiv>
{
using CanonicalNode = loco::EltwiseDiv;
};
template <typename TFNode> bool canonicalize_eltwise_binary_node(TFNode *node)
{
auto graph = node->graph();
/**
* This will replace T/F Eltwise Binary node with a corresponding Canonical Eltwise node
*
* BEFORE
* A --- T/F Node --- C
* /
* B ----
*
* AFTER
* A --- T/F Node ---
* /
* B ----
*
* A --- [FixedReshape] --- [TensorBroadcast] --- Canonical Node -- C
* /
* B --- [FixedReshape] --- [TensorBroadcast] ----
*
* NOTE
* - [...] means optional node. They may or may not be created during this procedure.
* - T/F Node is disconnected from C after transformation.
*/
using CanonicalNodeT = typename EltwiseBinaryCanonicalizationRule<TFNode>::CanonicalNode;
auto node_A = node->x();
auto node_B = node->y();
if (!loco::shape_known(node_A) || !loco::shape_known(node_B))
return false;
if (!loco::shape_known(node))
return false;
auto out_shape = loco::shape_get(node).template as<loco::TensorShape>();
// Create a node
auto canonical_node = graph->nodes()->template create<CanonicalNodeT>();
using moco::tf::eltwise::binary::connect_to;
using moco::tf::broadcast_to;
// update connections
std::make_pair(node_A, node_B) | broadcast_to(out_shape) | connect_to(canonical_node);
// replace node
replace(node).with(canonical_node);
return true;
}
} // namespace
#endif // __TF_ELTWISE_BINARY_CANONICALIZE_HELPER_H__
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