[Bug tree-optimization/115438] [15 Regression] 503.bwaves_r regressed 5-11% on different x86_64 machines at -Ofast -march=native since r15-1006-gd93353e6423eca

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115438

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
On Zen2 I can reproduce 2.5% slowdown comparing GCC 14 to trunk.  Implementing
the after-loop adjustment turns it into a 2.5% improvement.