[Bug target/117875] New: [15 Regression] 28% regression for 456.hmmer on Zen4 with -Ofast -march=native

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117875

            Bug ID: 117875
           Summary: [15 Regression] 28% regression for 456.hmmer on Zen4
                    with -Ofast -march=native
           Product: gcc
           Version: 15.0
            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 am observing a 28% runtime regression for 456.hmmer on Zen4 with -Ofast
-march=native when compared to GCC 14.2.