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/*
* Copyright (c) 2023 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/DecomposeHardSwishPass.h"
#include "helpers/NodeFiller.h"
#include "helpers/TypeMapper.h"
#include <luci/IR/CircleNodes.h>
#include <luci/Profile/CircleNodeOrigin.h>
namespace
{
/**
* BEFORE
* [CircleNode]
* |
* |
* [CircleHardSwish]
* |
* |
* [CircleNode]
*
*
* AFTER
*
* [CircleNode] [CircleConst]
* | \ /
* | \ /
* | [CircleAdd]
* | |
* | |
* \ [CircleRelu6] [CircleConst]
* \ \ /
* \ \ /
* \ [CircleMul]
* \ /
* \ /
* [CircleMul]
* |
* |
* [CircleNode]
*
*/
bool decompose_hardswish(luci::CircleHardSwish *hardswish)
{
if (not hardswish)
return false;
if (hardswish->dtype() != loco::DataType::FLOAT32)
return false;
auto g = hardswish->graph();
auto name = hardswish->name();
assert(name.length() > 0);
// Create a const for CircleAdd operation
auto add_const = g->nodes()->create<luci::CircleConst>();
add_const->shape({}); // scalar
add_const->dtype(loco::DataType::FLOAT32);
add_const->rank(0);
add_const->size<loco::DataType::FLOAT32>(1);
add_const->at<loco::DataType::FLOAT32>(0) = 3.;
add_const->name(name + "/Add/const");
luci::add_origin(add_const, luci::get_origin(hardswish));
// Create an Add operation
auto add = g->nodes()->create<luci::CircleAdd>();
add->fusedActivationFunction(luci::FusedActFunc::NONE);
add->x(hardswish->features());
add->y(add_const);
add->name(name + "/Add");
luci::add_origin(add, luci::get_origin(hardswish));
// Create a Relu6 operation
auto relu6 = g->nodes()->create<luci::CircleRelu6>();
relu6->features(add);
relu6->name(name + "/Relu6");
luci::add_origin(relu6, luci::get_origin(hardswish));
// Create a const for CircleMul operation
auto mul_const = g->nodes()->create<luci::CircleConst>();
mul_const->shape({}); // scalar
mul_const->dtype(loco::DataType::FLOAT32);
mul_const->rank(0);
mul_const->size<loco::DataType::FLOAT32>(1);
mul_const->at<loco::DataType::FLOAT32>(0) = 1. / 6.;
mul_const->name(name + "/Mul/const");
luci::add_origin(mul_const, luci::get_origin(hardswish));
// Create first Mul operation
auto mul1 = g->nodes()->create<luci::CircleMul>();
mul1->fusedActivationFunction(luci::FusedActFunc::NONE);
mul1->x(relu6);
mul1->y(mul_const);
mul1->name(name + "/Mul1");
luci::add_origin(mul1, luci::get_origin(hardswish));
// Create second Mul operation
auto mul2 = g->nodes()->create<luci::CircleMul>();
mul2->fusedActivationFunction(luci::FusedActFunc::NONE);
mul2->x(hardswish->features());
mul2->y(mul1);
mul2->name(name + "/Mul2");
luci::add_origin(mul2, luci::get_origin(hardswish));
replace(hardswish).with(mul2);
return true;
}
} // namespace
namespace luci
{
bool DecomposeHardSwishPass::run(loco::Graph *g)
{
bool changed = false;
for (auto node : loco::active_nodes(loco::output_nodes(g)))
{
if (auto hardswish = dynamic_cast<luci::CircleHardSwish *>(node))
{
if (decompose_hardswish(hardswish))
changed = true;
}
}
return changed;
}
} // namespace luci
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