[Bug middle-end/125708] Missed optimization: division by (2 - bool) emits idivl instead of shift/select

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125708

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2026-06-10
           Keywords|                            |easyhack
     Ever confirmed|0                           |1

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Given a range that only has 2 values we could "change" a/b into `b==value1 ?
a/value1 : a/value2` during the last forwprop via match.
If we want to do it for powers of 2 only that might be a good idea.