[Bug tree-optimization/109048] [13 regression] redundant mask compare generated by vectorizer.

[crazylht at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109048

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
There's also a backend misoptimization for x86 avx512 mask compare which is
same as PR88570.