[Bug middle-end/122004] x86 optimization: (x > INT_MAX - c) can utilize overflow flag to save code size

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122004

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2025-09-19
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.
There is code in canonicalize_comparison which compares the cost of +1/-1 of
the constant. I wonder if there is a way to add to compare the cost of
expansion of __builtin_sub_overflow_p there.