if (output_tensor.TotalBytes() > 0) {
      XlaTensor* xla_tensor = XlaTensor::FromTensor(&output_tensor);
      TF_RET_CHECK(xla_tensor);
      xla_tensor->set_shaped_buffer(output.TakeSubTree({output_num}));
      if (use_multiple_streams) {
        xla_tensor->ResetDefinitionEvent(definition_event, stream);
      }
    }
    return output_tensor;
  }