text: /* Copyright 2019 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_PLUGIN_POPLAR_DRIVER_PASSES_ALL_TO_ALL_FINDER_H_
  #define TENSORFLOW_COMPILER_PLUGIN_POPLAR_DRIVER_PASSES_ALL_TO_ALL_FINDER_H_
  
  #include "tensorflow/compiler/plugin/poplar/driver/tools/hlo_matcher.h"
  #include "tensorflow/core/framework/types.h"
  
  namespace xla {
  
  // TODO(T47736): Support AllReduceMean
  namespace poplarplugin {
  
  class AllToAllFinder : public HloMatcher {
   public:
    AllToAllFinder(CompilerAnnotations& annotations, uint32 rep_fac);
  
    absl::string_view name() const override { return "all-to-all-finder"; }
  
   private:
    StatusOr<bool> HandleMatch(HloMatcherMatched& match,
                               const absl::optional<int64>) override;
  
    const uint32 replication_factor;
  };
  
  }  // namespace poplarplugin
  }  // namespace xla
  
  #endif  // TENSORFLOW_COMPILER_PLUGIN_POPLAR_DRIVER_PASSES_ALL_TO_ALL_FINDER_H_
  