diff options
Diffstat (limited to 'compiler/mir-onnx-importer/Op/Flatten.cpp')
-rw-r--r-- | compiler/mir-onnx-importer/Op/Flatten.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/compiler/mir-onnx-importer/Op/Flatten.cpp b/compiler/mir-onnx-importer/Op/Flatten.cpp new file mode 100644 index 000000000..dfad6ddbf --- /dev/null +++ b/compiler/mir-onnx-importer/Op/Flatten.cpp @@ -0,0 +1,58 @@ +/* + * 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 "Flatten.h" + +#include "ONNXHelpers.h" +#include "AttributeHelpers.h" + +#include "mir/ops/ReshapeOp.h" + +namespace mir_onnx +{ + +void convertFlattenV1(const onnx::NodeProto &onnx_node, ConverterContext *context) +{ + std::vector<mir::Operation::Output *> inputs = context->getNodeInputs(onnx_node); + mir::Graph *graph = context->getGraph(); + + const auto axis = getAttributeValue<int64_t>(onnx_node, "axis", 1); + assert(inputs.size() == 1); + const auto &in_shape = inputs[0]->getShape(); + assert(axis <= in_shape.rank()); // A tensor of rank >= axis + int32_t first_dim = 1, second_dim = 1; + int32_t dim = 0; + + for (; dim < axis; dim++) + first_dim *= in_shape.dim(dim); + + for (; dim < in_shape.rank(); dim++) + second_dim *= in_shape.dim(dim); + + mir::Shape out_shape({first_dim, second_dim}); // Output 2D tensor + + auto result = createOp<mir::ops::ReshapeOp>(graph, inputs[0], out_shape)->getOutput(0); + + context->setNodeOutputs(onnx_node, {result}); +} + +void convertFlattenV9(const onnx::NodeProto &onnx_node, ConverterContext *context) +{ + // Other type constraints + convertFlattenV1(onnx_node, context); +} + +} // namespace mir_onnx |