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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107499] [13 Regression] 433.milc regressed by
 6-8% on zen3 at -O2 -flto
Date: Sat, 05 Nov 2022 10:42:13 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: missed-optimization
X-Bugzilla-Severity: normal
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107499

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|12.0                        |13.0
           Keywords|                            |missed-optimization
   Target Milestone|---                         |13.0
   Last reconfirmed|                            |2022-11-05
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot =
gnu.org
            Summary|433.milc regressed by 6-8%  |[13 Regression] 433.milc
                   |on zen3 at -O2 -flto        |regressed by 6-8% on zen3
                   |                            |at -O2 -flto

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It should be possible to constrain the "fix" to niter analysis, it also aff=
ects
IVOPTs which might be the issue here.  I'll investigate during stage3.=