[Bug middle-end/110711] possible missed optimization for std::max with -march=znver2

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110711

--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
Looks like it's GCC13 regression, GCC12.3 successfully vectorizes k_std_max