[Bug tree-optimization/123126] [16 Regression] 6-10% slowdown of xalancbmk_r on Zen{4,5} since r16-6104-gb5c64db0a49d46 with PGO

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123126

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
New patch set submitted:
https://gcc.gnu.org/pipermail/gcc-patches/2025-December/703850.html
https://gcc.gnu.org/pipermail/gcc-patches/2025-December/703851.html

This should fix the issue as loop exits in many cases might be very unlikely
which is fine (with profile) but the only cases we care about here is loop
exists to noreturns or loop exits that never happen :).