[Bug tree-optimization/127633] [17 regression] wrong code at -O{2, 3} with "-funroll-all-loops -fno-vect-cost-model" on x86_64-linux-gnu since r17-2654

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127633

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-09-27
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #7 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Looking into this slightly, I don't see anything wrong with the final gimple
form.  

Commenting out:
an = an^(int)bg;

Allows this to work.
But the gimple is the same except for removal there.  (note bg is 0).