| /* |
| * Copyright (c) 2018 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "arm_compute/graph/mutators/InPlaceOperationMutator.h" |
| |
| #include "arm_compute/graph/Graph.h" |
| #include "arm_compute/graph/Logger.h" |
| |
| namespace arm_compute |
| { |
| namespace graph |
| { |
| const char *InPlaceOperationMutator::name() |
| { |
| return "InPlaceOperationMutator"; |
| } |
| |
| void InPlaceOperationMutator::mutate(Graph &g) |
| { |
| std::set<NodeType> in_place_nodes = { NodeType::BatchNormalizationLayer, NodeType::ActivationLayer }; |
| |
| // Not interested in the order of nodes |
| for(auto &node : g.nodes()) |
| { |
| if(node && in_place_nodes.find(node->type()) != std::end(in_place_nodes)) |
| { |
| // Get input edge |
| Edge *input_edge = node->input_edge(0); |
| |
| // Check if parent has a single output if yes then force in place calculation else not |
| if((input_edge != nullptr) && (input_edge->producer() != nullptr) && (input_edge->producer()->output_edges().size() == 1)) |
| { |
| // Get current and new output tensors |
| auto current_output_tensor = node->output(0); |
| auto new_output_tensor = input_edge->tensor(); |
| |
| ARM_COMPUTE_ERROR_ON(current_output_tensor == nullptr || new_output_tensor == nullptr); |
| |
| // Prevent in-place operation if there is an accessor bound to the in-place tensor |
| if(new_output_tensor->accessor() == nullptr) |
| { |
| ARM_COMPUTE_LOG_GRAPH_VERBOSE("Switching to in-place computation for the node with ID : " |
| << node->id() << " and name : " << node->name() << std::endl); |
| // Update accessor |
| new_output_tensor->set_accessor(current_output_tensor->extract_accessor()); |
| // Update output |
| node->set_output_tensor(new_output_tensor->id(), 0); |
| } |
| else |
| { |
| ARM_COMPUTE_LOG_GRAPH_VERBOSE("Prevented in-place operation as there is an accessor bound to the input tensor\n"); |
| } |
| } |
| } |
| } |
| } |
| } // namespace graph |
| } // namespace arm_compute |