return true;
    }
    op->emitOpError("TF/XLA TPU bridge input check: found invalid op. ")
        << "Can't be both xla and non-xla";
    return false;
  }
  return true;
}
void GetFlattenedShardings(llvm::SmallVector<xla::OpSharding>& shardings_result,
                           std::string shard_string) {
  xla::OpSharding sharding;
  if (shard_string.empty()) return;