// except from the ones in `exceptions`. In that case, we can synthesize that
  // binary op kind for the values in `exceptions`.
  std::optional<HoistParams> GetHoistParams(
      TF::ConcatV2Op op, int64_t axis,
      const llvm::SmallDenseMap<Value, unsigned, 4>& exceptions) const;
};

LogicalResult HoistCwiseBinaryOutOfConcat::matchAndRewrite(