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Diffstat (limited to 'tensorflow/contrib/lite/toco/graph_transformations/resolve_tensorflow_squeeze.cc')
-rw-r--r-- | tensorflow/contrib/lite/toco/graph_transformations/resolve_tensorflow_squeeze.cc | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/tensorflow/contrib/lite/toco/graph_transformations/resolve_tensorflow_squeeze.cc b/tensorflow/contrib/lite/toco/graph_transformations/resolve_tensorflow_squeeze.cc new file mode 100644 index 0000000000..1d3f42b5ec --- /dev/null +++ b/tensorflow/contrib/lite/toco/graph_transformations/resolve_tensorflow_squeeze.cc @@ -0,0 +1,54 @@ +/* Copyright 2017 The TensorFlow Authors. 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 <memory> +#include <string> +#include <unordered_map> +#include <vector> + +#include "tensorflow/contrib/lite/toco/graph_transformations/graph_transformations.h" +#include "tensorflow/contrib/lite/toco/graph_transformations/remove_trivial_passthrough.h" +#include "tensorflow/contrib/lite/toco/model.h" +#include "tensorflow/contrib/lite/toco/tooling_util.h" +#include "tensorflow/core/platform/logging.h" + +namespace toco { + +bool ResolveTensorFlowSqueeze::Run(Model* model, std::size_t op_index) { + const auto squeeze_it = model->operators.begin() + op_index; + const auto* squeeze_op = squeeze_it->get(); + if (squeeze_op->type != OperatorType::kSqueeze) { + return false; + } + + CHECK_EQ(squeeze_op->inputs.size(), 1); + CHECK_EQ(squeeze_op->outputs.size(), 1); + + // If the output is consumed by a reshape op, it's a trivial squeeze. + if (CountOpsWithInput(*model, squeeze_op->outputs[0]) == 1) { + const auto* next_op = GetOpWithInput(*model, squeeze_op->outputs[0]); + if (next_op->type == OperatorType::kTensorFlowReshape) { + AddMessageF( + "%s is trivial because its output is only consumed by a " + "Reshape op", + LogName(*squeeze_op)); + + return RemoveTrivialPassthroughOp(this, model, op_index); + } + } + + return false; +} + +} // namespace toco |