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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 "TensorTransposeConverter.h"
#include "Dialect/IR/TFLNodes.h"
#include <loco.h>
#include <loco/Service/ShapeInference.h>
#include <oops/InternalExn.h>
#include <algorithm>
#include <cassert>
#include <vector>
namespace
{
void validate_perm(loco::TensorTranspose *origin)
{
// check perm values are correct
std::vector<uint32_t> base_perms; // such as {0, 1, 2, 3, ... }
std::vector<uint32_t> perms; // perm values in TensorTranspose
base_perms.resize(origin->perm()->size());
perms.resize(origin->perm()->size());
for (loco::TensorAxis x = 0; x < origin->perm()->size(); x++)
{
base_perms[x] = x;
perms[x] = origin->perm()->axis(x);
}
if (!std::is_permutation(base_perms.begin(), base_perms.end(), perms.begin()))
INTERNAL_EXN("wrong perm value");
}
} // namespace
namespace exo
{
/**
* @brief Converts loco::TensorTranspose to locoex::TFLTranspose
*/
bool TensorTransposeConverter::convert(loco::TensorTranspose *origin)
{
auto *graph = origin->graph();
auto tfl_transpose = graph->nodes()->create<locoex::TFLTranspose>();
{
// validation
{
assert(origin->input() != nullptr);
auto input_rank = loco::shape_get(origin->input()).as<loco::TensorShape>().rank();
if (input_rank != origin->perm()->size())
INTERNAL_EXN_V("perm size should be same with input rank",
oops::to_uint32(origin->perm()->size()));
validate_perm(origin);
}
tfl_transpose->a(origin->input());
// perm : set TFLConst
auto perm_const = graph->nodes()->create<locoex::TFLConst>();
{
perm_const->dtype(loco::DataType::S32);
perm_const->rank(1);
perm_const->dim(0) = origin->perm()->size();
perm_const->size<loco::DataType::S32>(origin->perm()->size());
// add perm values into perm TFLConst
for (loco::TensorAxis x = 0; x < origin->perm()->size(); x++)
{
perm_const->at<loco::DataType::S32>(x) = origin->perm()->axis(x);
}
}
tfl_transpose->perm(perm_const);
}
// replace canonical node
loco::replace(origin).with(tfl_transpose);
origin->input(nullptr);
return true;
}
} // namespace exo
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