[Bug target/104188] [11/12 Regression] gcc omitting AVX-512 broadcast instruction

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104188

--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Since vbroadcastf32x4 != vbroadcastss, we can't replace vbroadcastf32x4
with {1to16} broadcast.