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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/112697] [14 Regression] 30-40% exec time regression
 of 433.milc on zen2
Date: Fri, 24 Nov 2023 17:45:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112697

Martin Jambor <jamborm at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jamborm at gcc dot gnu.org,
                   |                            |vmakarov at gcc dot gnu.org

--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
I can reliably bisect this to r14-4972-g8aa47713701b1f (Vladimir's [RA]: Add
cost calculation for reg equivalence invariants) on a similar zen2 machine.=
=20
But it seems zen2 specific, I did not see any performance difference (this =
is
generic march/tuning) on znver4, for example.  So it may be quite hard to
analyze and fix, even though the regression is big :-/=