[Bug target/112443] [12/13/14 Regression] Misoptimization of _mm256_blendv_epi8 intrinsic on avx512bw+avx512vl

[alexander.grund@tu-dresden.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112443

--- Comment #3 from Alexander Grund <alexander.grund@tu-dresden.de> ---
> I can confirm that the suggested patch can be applied to 12.2.0 and fixes
> the issue I observed

Also tested 12.1, 12.3, 13.1, 13.2 with this patch and it works (as expected)
too