https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107093
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- For UNSPEC part, we can create a new define_insn with genenral operation and accept both gpr and mask alternatives just like other logic patterns. For gpr version, we can split it to xor + not after reload. For mask version, we can split it to kxnor with UNSPEC after reload. It should help general simplication for xor and not.
