message: Lowercase argument support without bugs.
diff: @@ -469,7 +469,9 @@ class TrtGraphConverter(object):
  self._calibration_graph = None
  self._calibration_data_collected = False
  self._need_calibration = (
  - precision_mode == TrtPrecisionMode.INT8 and use_calibration)
  + ((precision_mode == TrtPrecisionMode.INT8) or
  + (precision_mode == TrtPrecisionMode.INT8.lower()))
  + and use_calibration)
  if self._need_calibration and not is_dynamic_op:
  tf_logging.warn(
  "INT8 precision mode with calibration is supported with "
  @@ -995,8 +997,9 @@ class TrtGraphConverterV2(object):
  signature_constants.DEFAULT_SERVING_SIGNATURE_DEF_KEY)
  self._need_calibration = (
  - conversion_params.precision_mode == TrtPrecisionMode.INT8 and
  - conversion_params.use_calibration)
  + ((conversion_params.precision_mode == TrtPrecisionMode.INT8) or
  + (conversion_params.precision_mode == TrtPrecisionMode.INT8.lower()))
  + and conversion_params.use_calibration)
  self._converted = False
  self._build_called_once = False
  