[Bug target/96855] r11-571 regression FAIL: gcc.target/i386/pr92658-1.c

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96855

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
Add -mprefer-vector-width=512 to avoid impact of different failure.