1 /* Copyright 2022 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_SELECT_AND_SCATTER_EXPANDER_H_ 17 #define TENSORFLOW_COMPILER_XLA_SERVICE_SELECT_AND_SCATTER_EXPANDER_H_ 18 19 #include "tensorflow/compiler/xla/service/op_expander_pass.h" 20 21 namespace xla { 22 23 // This pass rewrites select-and-scatter operations into a window reduction and 24 // a scatter as described in the conceptual explanation of the "select" and 25 // "scatter" steps of this operation. 26 class SelectAndScatterExpander : public OpExpanderPass { 27 public: name()28 absl::string_view name() const override { 29 return "select_and_scatter_expander"; 30 } 31 32 protected: 33 bool InstructionMatchesPattern(HloInstruction* inst) override; 34 35 StatusOr<HloInstruction*> ExpandInstruction(HloInstruction* inst) override; 36 }; 37 38 } // namespace xla 39 40 #endif // TENSORFLOW_COMPILER_XLA_SERVICE_SELECT_AND_SCATTER_EXPANDER_H_ 41