[Bug tree-optimization/123606] 5-8% slowdown of mcf on x86 caused by r16-6679-g3ebe697f32197e (was sped up by r16-5258-g1d8e2d51e5c5cb)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123606

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
With the ccmp hint this might be all u-arch details on branch prediction (and
aliasing issues therein, thus code layout sensitivity).