[Bug target/89578] New: [9 Regression] 5% runtime regression for 481.wrf at -Ofast -flto

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89578

            Bug ID: 89578
           Summary: [9 Regression] 5% runtime regression for 481.wrf at
                    -Ofast -flto
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

I see with -march=native on haswell in addition to -Ofast -flto ~5% runtime
regression for 481.wrf with the last known good rev. being r269093 and
the first known bad one r269146.