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From: "fkastl at suse dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/110973] 9% 444.namd regression between
 g:c2a447d840476dbd (2023-08-03 18:47) and g:73da34a538ddc2ad (2023-08-09
 20:17)
Date: Fri, 25 Aug 2023 11:52:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110973

--- Comment #4 from Filip Kastl <fkastl at suse dot cz> ---
(In reply to Martin Jambor from comment #3)
> There was also a 7.7% regression on zen3 with generic march (these
> measurements are without LTO):
>=20
> https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=3D466.120.0

I think this slowdown is caused by the r14-3078-gd9f3ea61fe36e2 commit that
Richard mentioned. I measured it on another zen3 machine and got ~7% slowdo=
wn.=