[Bug target/95766] Failure to directly use vpbroadcastd for _mm_set1_epi32 when passing unsigned short

[crazylht at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95766

--- Comment #1 from Hongtao.liu <crazylht at gmail dot com> ---
Shouldn't **a** be extended to int first?