return failure();
        }
        scast_op = rewriter.create<quantfork::StorageCastOp>(
            arg.getLoc(), mlir::cast<TensorType>(new_arg_type), arg);
      } else {
        scast_op = rewriter.create<quantfork::StorageCastOp>(
            arg.getLoc(), arg_type.clone(qtype.getStorageType()), arg);
      }
      args.push_back(scast_op.getResult());
    }