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Diffstat (limited to 'compiler/moco/import/src/Nodes/StridedSlice.cpp')
| -rw-r--r-- | compiler/moco/import/src/Nodes/StridedSlice.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/compiler/moco/import/src/Nodes/StridedSlice.cpp b/compiler/moco/import/src/Nodes/StridedSlice.cpp new file mode 100644 index 000000000..06d388be0 --- /dev/null +++ b/compiler/moco/import/src/Nodes/StridedSlice.cpp @@ -0,0 +1,187 @@ +/* + * Copyright (c) 2019 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 "moco/Import/Nodes/StridedSlice.h" + +#include <moco/IR/Nodes/TFStridedSlice.h> +#include <moco/IR/Nodes/TFConst.h> + +#include <moco/Names.h> + +#include "Convert.h" + +#include <loco.h> +#include <stdex/Memory.h> +#include <plier/tf/Convert.h> +#include <oops/UserExn.h> + +namespace +{ +using namespace moco; + +class TFStridedSliceGraphUpdate final : public GraphUpdate +{ +public: + TFStridedSliceGraphUpdate(TFStridedSlice *node, std::vector<TensorName> names) + : _node(node), _names(names) + { + } + + void input(const SymbolTable *) const override; + +private: + TFStridedSlice *_node; + std::vector<TensorName> _names; +}; + +void TFStridedSliceGraphUpdate::input(const SymbolTable *node_table) const +{ + // TODO support size 3 where strides is None + assert(_names.size() == 4); + + auto input_node = node_table->node(_names[0]); + auto begin_node = node_table->node(_names[1]); + auto end_node = node_table->node(_names[2]); + auto strides_node = node_table->node(_names[3]); + assert(input_node != nullptr); + assert(begin_node != nullptr); + assert(end_node != nullptr); + assert(strides_node != nullptr); + + _node->input(input_node); + _node->begin(begin_node); + _node->end(end_node); + _node->strides(strides_node); + + // TODO move validation codes to some suitable place + // Run basic validation + + // TODO support full mask features + if (_node->begin_mask() != 0 || _node->end_mask() != 0 || _node->ellipsis_mask() != 0 || + _node->new_axis_mask() != 0 || _node->shrink_axis_mask() != 1) + { + throw oops::UserExn("Mask attributes are not supported for now: ", _node->name()); + } + + // Only Const are supported for now + auto const_input = dynamic_cast<moco::TFConst *>(_node->input()); + auto const_begin = dynamic_cast<moco::TFConst *>(_node->begin()); + auto const_end = dynamic_cast<moco::TFConst *>(_node->end()); + auto const_strides = dynamic_cast<moco::TFConst *>(_node->strides()); + if (const_input == nullptr || const_begin == nullptr || const_end == nullptr || + const_strides == nullptr) + { + throw oops::UserExn("Only Const inputs are supported for now: ", _node->name()); + } + + // TODO support S64 + if (const_begin->dtype() != loco::DataType::S32 || const_end->dtype() != loco::DataType::S32 || + const_strides->dtype() != loco::DataType::S32) + { + throw oops::UserExn("Only Const types of INT32 are supported for begin/end/strides for now: ", + _node->name()); + } + + // Input Rank should match number of elements of the begin/end/strides + auto rin = const_input->rank(); + if (rin != const_begin->size<loco::DataType::S32>() || + rin != const_end->size<loco::DataType::S32>() || + rin != const_strides->size<loco::DataType::S32>()) + { + throw oops::UserExn("Ranks for inputs should be same: ", _node->name()); + } + + // TODO support strides type of S64 + // TODO support other strides value + // Only support stride 1 for now + uint32_t elements = const_strides->size<loco::DataType::S32>(); + for (uint32_t e = 0; e < elements; ++e) + { + if (const_strides->at<loco::DataType::S32>(e) != 1) + { + throw oops::UserExn("Only stride 1 is supported for now: ", _node->name()); + } + } +} + +} // namespace + +namespace moco +{ + +bool StridedSliceGraphBuilder::validate(const tensorflow::NodeDef &node) const +{ + // TODO support node.input_size() == 3 where strides is None + if (node.input_size() != 4) + return false; + + if (!plier::tf::has_attrs(node, {"T", "Index", "begin_mask", "end_mask", "ellipsis_mask", + "new_axis_mask", "shrink_axis_mask"})) + return false; + + return true; +} + +void StridedSliceGraphBuilder::build(const tensorflow::NodeDef &node, + GraphBuilderContext *context) const +{ + assert(context != nullptr); + + loco::Graph *graph = context->graph(); + SymbolTable *tensor_names = context->tensor_names(); + UpdateQueue *updates = context->updates(); + + std::string node_name = node.name(); + + auto stridedslice = graph->nodes()->create<TFStridedSlice>(); + stridedslice->name(node_name); + + // read attributes + auto begin_mask = plier::tf::get_int_attr(node, "begin_mask"); + auto end_mask = plier::tf::get_int_attr(node, "end_mask"); + auto ellipsis_mask = plier::tf::get_int_attr(node, "ellipsis_mask"); + auto new_axis_mask = plier::tf::get_int_attr(node, "new_axis_mask"); + auto shrink_axis_mask = plier::tf::get_int_attr(node, "shrink_axis_mask"); + + stridedslice->begin_mask(begin_mask); + stridedslice->end_mask(end_mask); + stridedslice->ellipsis_mask(ellipsis_mask); + stridedslice->new_axis_mask(new_axis_mask); + stridedslice->shrink_axis_mask(shrink_axis_mask); + + // TODO support general mask values: we support only this limited case for now + assert(begin_mask == 0); + assert(end_mask == 0); + assert(ellipsis_mask == 0); + assert(new_axis_mask == 0); + assert(shrink_axis_mask == 1); + + // save the name for graph link updates + TensorName output_name(node_name, 0); + tensor_names->enroll(output_name, stridedslice); + + std::vector<TensorName> input_names; + input_names.push_back(TensorName(node.input(0))); // input + input_names.push_back(TensorName(node.input(1))); // begin + input_names.push_back(TensorName(node.input(2))); // end + input_names.push_back(TensorName(node.input(3))); // strides + + auto tfconv2d_update = stdex::make_unique<TFStridedSliceGraphUpdate>(stridedslice, input_names); + + updates->enroll(std::move(tfconv2d_update)); +} + +} // namespace moco |