[Bug tree-optimization/124180] [16 Regression] No longer vectorized due to missed if-conversion

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124180

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Which means we need cond[_len]_[pack_]{u,s}fix to recover, same for float.