1 /* Copyright 2020 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 #ifndef TENSORFLOW_COMPILER_XLA_SERVICE_CONDITIONAL_CANONICALIZER_H_ 16 #define TENSORFLOW_COMPILER_XLA_SERVICE_CONDITIONAL_CANONICALIZER_H_ 17 18 #include <utility> 19 20 #include "tensorflow/compiler/xla/service/hlo_module.h" 21 #include "tensorflow/compiler/xla/service/hlo_pass_interface.h" 22 23 namespace xla { 24 25 // Canonicalize output of conditionals, make non-tuple outputs into tuple with 26 // single element output. After this pass, all conditional instructions have 27 // tuple outputs. 28 class ConditionalCanonicalizer : public HloModulePass { 29 public: name()30 absl::string_view name() const override { 31 return "conditional canonicalizer"; 32 } 33 34 StatusOr<bool> Run(HloModule* module) override; 35 }; 36 } // namespace xla 37 38 #endif // TENSORFLOW_COMPILER_XLA_SERVICE_CONDITIONAL_CANONICALIZER_H_ 39