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/*
* Copyright (c) 2020 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/Import/Nodes/CircleReshape.h"
#include <luci/IR/Nodes/CircleConst.h>
#include <luci/IR/Nodes/CircleReshape.h>
namespace luci
{
bool CircleReshapeGraphBuilder::validate(const ValidateArgs &args) const
{
if (args.op.inputs.size() != 1 && args.op.inputs.size() != 2)
return false;
if (args.op.outputs.size() != 1)
return false;
// for two inputs, check if type is S32
if (args.op.inputs.size() == 2)
{
const auto &inputs = args.op.inputs;
const auto tensors = args.reader.tensors();
const auto tensor_in = tensors.at(inputs.at(1));
assert(tensor_in != nullptr);
// NOTE fix this if there is any other case
// TensorFlow lite and circle only supports S32
if (tensor_in->type() != circle::TensorType::TensorType_INT32)
return false;
}
return true;
}
static void setup_shape_attribute(const std::vector<int32_t> &shape, CircleReshape *node)
{
node->newShape()->rank(shape.size());
for (uint32_t i = 0; i < shape.size(); ++i)
{
node->newShape()->dim(i) = shape[i];
}
}
static CircleNode *create_shape_node(const std::vector<int32_t> &shape, loco::Graph *graph)
{
auto *shape_node = graph->nodes()->create<luci::CircleConst>();
shape_node->dtype(loco::DataType::S32);
shape_node->rank(1);
shape_node->dim(0) = shape.size();
shape_node->size<loco::DataType::S32>(shape.size());
for (uint32_t i = 0; i < shape.size(); ++i)
{
shape_node->at<loco::DataType::S32>(i) = shape[i];
}
shape_node->name("Reshape/shape");
return shape_node;
}
CircleNode *CircleReshapeGraphBuilder::build_node(const circle::OperatorT &op,
const std::vector<CircleNode *> &inputs,
loco::Graph *graph) const
{
// If the second input is not provided, generate it based on the value of the attribute.
// TODO Presence of the second input is the current requirement of the IR.
auto *shape_node = (inputs.size() == 2) ? inputs.at(1) : nullptr;
if (shape_node == nullptr)
{
const auto *options = op.builtin_options.AsReshapeOptions();
if (options != nullptr)
shape_node = create_shape_node(options->new_shape, graph);
else
{
shape_node = graph->nodes()->create<CircleOutputDummy>();
shape_node->dtype(loco::DataType::S32);
shape_node->rank(0);
shape_node->name("Reshape/dummy");
}
}
auto *node = graph->nodes()->create<CircleReshape>();
node->tensor(inputs.at(0));
node->shape(shape_node);
const auto *options = op.builtin_options.AsReshapeOptions();
if (options)
setup_shape_attribute(options->new_shape, node);
return node;
}
} // namespace luci
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