[Bug ipa/91836] New: [10 Regression] Speed regression of 525.x264_r with -Ofast -march=native since r275982

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91836

            Bug ID: 91836
           Summary: [10 Regression] Speed regression of 525.x264_r with
                    -Ofast -march=native since r275982
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: jamborm at gcc dot gnu.org, marxin at gcc dot gnu.org
            Blocks: 26163
  Target Milestone: ---

Seen on the graphs and I verified that locally with train run on znver1:
https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=35.407.0&plot.1=32.377.0


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)