[Bug target/119069] 519.lbm_r runs 60% slower with -Ofast -flto -march=znver5 on an AMD Zen5 machine than when compiled with GCC 14 (or with -march=znver4)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119069

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|                            |missed-optimization

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the thing to do is identify the hazard that's produced by sched2 and find a
way to avoid it (possibly undo sched2 stuff bit-by-bit or bisect it somehow?).