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/*
* Copyright (c) 2018 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 "ReLU.h"
#include "IRBuilder.h"
#include <coco/IR/FeatureLayouts.h>
#include <morph/caffe.h>
#include <cassert>
using namespace nncc::core::ADT;
using namespace morph::caffe;
namespace caffeimport
{
void ReLUBuilder::build(const ::caffe::LayerParameter &layer, GraphBuilderContext *context) const
{
coco::Module *module = context->module();
coco::Block *blk = context->block();
std::map<std::string, tensor::Shape> &shape_ctx = context->shape_ctx();
std::map<std::string, coco::Bag *> &bag_ctx = context->bag_ctx();
assert(layer.bottom().size() == 1);
assert(layer.top().size() == 1);
// PReLU is not supported, yet
// TODO Support PReLU
assert(!layer.has_relu_param());
// NOTE The current implementation treats ReLU as Feature op
// TODO Support ReLU over general tensor
const auto ifm_name = layer.bottom(0);
const auto ifm_shape = shape_ctx.at(ifm_name);
auto ifm_bag = bag_ctx.at(ifm_name);
auto ifm_obj = module->entity()->object()->create<coco::FeatureObject>();
ifm_obj->bag(ifm_bag);
ifm_obj->layout(coco::FeatureLayouts::BCHW::create(as_feature_shape(ifm_shape)));
const auto ofm_name = layer.top(0);
const auto ofm_shape = ifm_shape;
auto ofm_bag = module->entity()->bag()->create(num_elements(ofm_shape));
auto ofm_obj = module->entity()->object()->create<coco::FeatureObject>();
ofm_obj->bag(ofm_bag);
ofm_obj->layout(coco::FeatureLayouts::BCHW::create(as_feature_shape(ofm_shape)));
// Create a Load Op
auto load = op_builder(module).load(ifm_obj).pop();
// Create a ReLU op
auto op = module->entity()->op()->create<coco::ReLU>();
op->arg(load);
// Create a Eval instruction
auto ins = instr_builder(module).eval(ofm_obj, op);
// Append the instruction to the block
blk->instr()->append(ins);
// Update bag and shape context
bag_ctx[ofm_name] = ofm_bag;
shape_ctx[ofm_name] = ofm_shape;
}
} // namespace caffeimport
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