Type output_type = cast_op.getType();

    // Preserve quantization information for intermediate tensors.
    auto intermediate_type = preceding_cast.getType();
    if (isQuantizedType(intermediate_type) || isQuantizedType(output_type)) {
      return failure();
    }

    auto input_tensor_type = input_type.dyn_cast<TensorType>();
    auto output_tensor_type = output_type.dyn_cast<TensorType>();