[Bug rtl-optimization/106553] pre-register allocation scheduler is not RMW aware

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106553

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2025-07-15
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
                 CC|                            |pinskia at gcc dot gnu.org
           Severity|normal                      |enhancement

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
For GCC 15, -O2/-Os disables the pre-RA scheduler for aarch64. So maybe this is
the way forward for -O3+ and figure out how to resolve the -O3 regressions.