| /* 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. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_COMPILER_XLA_SERVICE_TUPLE_SIMPLIFIER_H_ |
| #define TENSORFLOW_COMPILER_XLA_SERVICE_TUPLE_SIMPLIFIER_H_ |
| |
| #include <utility> |
| |
| #include "tensorflow/compiler/xla/service/hlo_module.h" |
| #include "tensorflow/compiler/xla/service/hlo_pass_interface.h" |
| |
| namespace xla { |
| |
| // A pass which simplifies patterns of Tuple and GetTupleElement instructions in |
| // the module. |
| class TupleSimplifier : public HloPassInterface { |
| public: |
| TupleSimplifier() : TupleSimplifier(/*exclude_entry_computation=*/false) {} |
| explicit TupleSimplifier(bool exclude_entry_computation); |
| ~TupleSimplifier() override {} |
| absl::string_view name() const override { return "tuple-simplifier"; } |
| |
| // Run tuple simplification on the given computation. Returns whether the |
| // computation was changed. |
| StatusOr<bool> Run(HloModule* module) override; |
| |
| private: |
| // When set, this pipeline stage will perform optimization of all computations |
| // apart from the module's entry computation. This is used by Graphcore's |
| // backend. |
| bool exclude_entry_computation_; |
| }; |
| |
| } // namespace xla |
| |
| #endif // TENSORFLOW_COMPILER_XLA_SERVICE_TUPLE_SIMPLIFIER_H_ |