Georgios Pinitas | ee33ea5 | 2018-03-08 16:01:29 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2018 ARM Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "arm_compute/graph2/mutators/SplitLayerSubTensorMutator.h" |
| 25 | |
| 26 | #include "arm_compute/graph2/Graph.h" |
| 27 | #include "arm_compute/graph2/Logger.h" |
| 28 | #include "arm_compute/graph2/backends/BackendRegistry.h" |
| 29 | #include "arm_compute/graph2/nodes/SplitLayerNode.h" |
| 30 | |
| 31 | #include "arm_compute/core/utils/misc/Cast.h" |
| 32 | #include "arm_compute/core/utils/misc/Iterable.h" |
| 33 | |
| 34 | namespace arm_compute |
| 35 | { |
| 36 | namespace graph2 |
| 37 | { |
| 38 | const char *SplitLayerSubTensorMutator::name() |
| 39 | { |
| 40 | return "SplitLayerSubTensorMutator"; |
| 41 | } |
| 42 | |
| 43 | void SplitLayerSubTensorMutator::mutate(Graph &g) |
| 44 | { |
| 45 | // Should be in reverse order of execution |
| 46 | for(auto &node : arm_compute::utils::iterable::reverse_iterate(g.nodes())) |
| 47 | { |
| 48 | if(node && node->type() == NodeType::SplitLayer && node->input(0) != nullptr) |
| 49 | { |
| 50 | // Get output tensor |
| 51 | Tensor *input_tensor = node->input(0); |
| 52 | |
| 53 | // Check that all tensor have the same target and are valid |
| 54 | bool is_valid = std::all_of(node->outputs().cbegin(), node->outputs().cend(), |
| 55 | [&](const TensorID & tid) |
| 56 | { |
| 57 | return (g.tensor(tid) != nullptr) && (g.tensor(tid)->desc().target == input_tensor->desc().target); |
| 58 | }); |
| 59 | |
| 60 | // Create subtensors |
| 61 | if(is_valid && backends::BackendRegistry::get().find_backend(input_tensor->desc().target) != nullptr) |
| 62 | { |
| 63 | ARM_COMPUTE_LOG_GRAPH_VERBOSE("Using sub-tensors for the node with ID : " |
| 64 | << node->id() << " and name : " << node->name() << std::endl); |
| 65 | |
| 66 | auto *split_node = arm_compute::utils::cast::polymorphic_downcast<SplitLayerNode *>(node.get()); |
| 67 | |
| 68 | const unsigned int axis = split_node->axis(); |
| 69 | const unsigned int num_splits = split_node->num_splits(); |
| 70 | const bool extend_parent = (axis < 2); |
| 71 | |
| 72 | // Create sub-tensor handles |
| 73 | for(unsigned int i = 0; i < node->outputs().size(); ++i) |
| 74 | { |
| 75 | Tensor *output_tensor = node->output(i); |
| 76 | const TensorShape output_shape = output_tensor->desc().shape; |
| 77 | Coordinates coords; |
| 78 | std::tie(std::ignore, coords) = SplitLayerNode::compute_output_shape(input_tensor->desc().shape, num_splits, axis, i); |
| 79 | |
| 80 | backends::IDeviceBackend *backend = backends::BackendRegistry::get().find_backend(output_tensor->desc().target); |
| 81 | std::unique_ptr<ITensorHandle> handle = backend->create_subtensor(input_tensor->handle(), output_shape, coords, extend_parent); |
| 82 | output_tensor->set_handle(std::move(handle)); |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | } // namespace graph2 |
| 89 | } // namespace arm_compute |