1 /* Copyright 2019 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_COMPILER_XLA_SERVICE_SORT_SIMPLIFIER_H_ 17 #define TENSORFLOW_COMPILER_XLA_SERVICE_SORT_SIMPLIFIER_H_ 18 19 #include "tensorflow/compiler/xla/service/hlo_module.h" 20 #include "tensorflow/compiler/xla/service/hlo_pass_interface.h" 21 #include "tensorflow/compiler/xla/statusor.h" 22 23 namespace xla { 24 25 // HLO pass which removes unused operands from sort, where an unused operand is 26 // defined as an operand at some index 'x' at which the output is not used. 27 class SortSimplifier : public HloModulePass { 28 public: name()29 absl::string_view name() const override { return "simplify-sorts"; } 30 StatusOr<bool> Run(HloModule* module) override; 31 }; 32 33 } // namespace xla 34 35 #endif // TENSORFLOW_COMPILER_XLA_SERVICE_SORT_SIMPLIFIER_H_ 36