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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 "MinMaxObserver.h"
#include <luci/IR/CircleOpcode.h>
using DataType = luci_interpreter::DataType;
namespace record_minmax
{
// postTensorWrite is only called for a node producing a tensor
void MinMaxObserver::postTensorWrite(const luci::CircleNode *node,
const luci_interpreter::Tensor *tensor)
{
// CircleOutput does not produce a tensor
assert(node->opcode() != luci::CircleOpcode::CIRCLEOUTPUT);
// Operators with multiple outputs
assert(node->opcode() != luci::CircleOpcode::IF);
assert(node->opcode() != luci::CircleOpcode::SPLIT);
assert(node->opcode() != luci::CircleOpcode::SPLIT_V);
assert(node->opcode() != luci::CircleOpcode::TOPK_V2);
assert(node->opcode() != luci::CircleOpcode::UNPACK);
assert(node->opcode() != luci::CircleOpcode::WHILE);
if (node->opcode() == luci::CircleOpcode::CIRCLECONST)
{
// node is not activation. Do nothing.
return;
}
if (node->opcode() == luci::CircleOpcode::ARG_MAX)
{
// Output of arg_max is the index of the largest value across axes of a tensor
// this should not be quantized
return;
}
// Only support recording of float32 values
if (tensor->element_type() != DataType::FLOAT32)
throw std::runtime_error("Tensor's data type is not float");
const auto data = tensor->data<float>();
const auto num_elements = tensor->shape().num_elements();
std::vector<float> buf(data, data + num_elements);
auto minmax = std::minmax_element(buf.begin(), buf.end());
float min = *minmax.first;
float max = *minmax.second;
_minmax_data.recordMinMax(node, min, max);
}
} // namespace record_minmax
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