[Bug target/123603] [16/17 Regression] 13% slowdown of exchange2_r on Zen4 since r16-6767-g948d33f490a6b0

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123603

--- Comment #9 from Josef Melcr <jmelcr at gcc dot gnu.org> ---
Zen5 2017 exchange2_r -O2 -g -flto=128 with PGO as well
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=1244.407.0