[Bug middle-end/121509] [16 Regression] runtime differences with -march=znver3

[dcb314 at hotmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121509

--- Comment #3 from David Binderman <dcb314 at hotmail dot com> ---
trunk $ git bisect bad df86ac52fccb2dec
df86ac52fccb2deccb53fb79f71db1fd700476bc is the first bad commit
commit df86ac52fccb2deccb53fb79f71db1fd700476bc (HEAD)
Author: Richard Biener <rguent...@suse.de>
Date:   Tue Aug 5 13:20:07 2025 +0200

    Remove hybrid SLP detection

Reduction still running after an hour.