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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111064] New: 5-10% regression of parest on icelake
 between g:d073e2d75d9ed492de9a8dc6970e5b69fae20e5a (Aug 15 2023) and
 g:9ade70bb86c8744f4416a48bb69cf4705f00905a (Aug 16)
Date: Fri, 18 Aug 2023 11:48:15 +0000
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X-Bugzilla-Version: 13.1.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111064

            Bug ID: 111064
           Summary: 5-10% regression of parest on icelake between
                    g:d073e2d75d9ed492de9a8dc6970e5b69fae20e5a (Aug 15
                    2023) and g:9ade70bb86c8744f4416a48bb69cf4705f00905a
                    (Aug 16)
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hubicka at gcc dot gnu.org
  Target Milestone: ---

-Ofast -march=3Dnative
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=3D801.457.0
-Ofast -march=3Dnative -flto + PGO
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=3D792.457.0

It does not seem to show on zen or altra=