[Bug target/120941] [16 Regression] 10-40% slowdown of 519.lbm_r on Zen{2,3} since r16-1644-gaba3b9d3a48a07

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120941

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
placing sth at the nearest common dominator can increase register pressure and
cause extra spilling?