[Bug target/110649] New: 25% sphinx3 spec2006 regression on Ice Lake and zen between g:acaa441a98bebc52 (2023-07-06 11:36) and g:55900189ab517906 (2023-07-07 00:23)

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110649

            Bug ID: 110649
           Summary: 25% sphinx3 spec2006 regression on Ice Lake and zen
                    between g:acaa441a98bebc52 (2023-07-06 11:36) and
                    g:55900189ab517906 (2023-07-07 00:23)
           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: ---

It is seen here:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=798.280.0
with -Ofast -march=native

Weekly testers seems to show regressions too (all just 1 run so far, so may be
a noise)

Intel
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=790.280.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=790.280.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=785.280.0

zen1
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=301.280.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=299.280.0

zen3
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=467.280.0
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=468.280.0