[Bug tree-optimization/107409] Perf loss ~5% on 519.lbm_r SPEC cpu2017 benchmark

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107409

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please share perf-profile before and after the revision?

Note I can't see it for Altra aarch64 CPU:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=633.477.0&plot.1=683.477.0&plot.2=664.477.0&plot.3=648.477.0&plot.4=618.477.0&plot.5=605.477.0&plot.6=759.477.0&plot.7=584.477.0&

However, there are huge changes in between GCC 6/7 and a newer releases. Note
the benchmark is pretty small and very sensitive to instruction caches.