The masked "lanewise/reduceLanes" are failed to be intrinsified randomly. The main reason is the mask value cannot be unboxed due to the "mask class" that are from the intrinsic argument list and from the mask value are different. The main difference is that the "mask class" in the argument list is the class of the instance of the mask (i.e. "IntMaxMask.class"), while the class from the mask value is the class of the super class (i.e. "jdk.incubator.vector.VectorMask<Integer>").