splat_value = attr.getSplatValue<SplatValueType>();
  return success();
}

// Checks for attributes with no value and sets the default value according to
// the convolution op definition.
void SetDefaultConvAttributes(mhlo::ConvolutionOp& conv_op,
                              ConversionPatternRewriter& rewriter) {
  auto dnums = conv_op.getDimensionNumbers();
  int32_t input_spatial_dims =