[Bug target/84490] [8 regression] 436.cactusADM regressed by 6-8% percent with -Ofast on Zen and Haswell, compared to gcc 7.2

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84490

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Actually r253993 was just the changelog part, r253975 was the actual change.

So I'm doing r254012 vs r254011 instead.