[Bug target/98478] AVX512 refactoring integer mask with VnBImode

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98478

--- Comment #4 from Hongtao.liu <crazylht at gmail dot com> ---
Arm implemented vector boolean mode in
https://gcc.gnu.org/pipermail/gcc-patches/2021-October/581534.html