[Bug rtl-optimization/48064] Optimizer produces suboptimal code for e.g. x = x ^ (x >> 1)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48064

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|windows 32                  |i686-*-* x86_64-*-*
           Severity|normal                      |enhancement
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |ra
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-12-25

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, it looks like a register allocation issue. Though I don't know how
much it matters these days with some register renaming and mov instructions
becoming issue latency of 0.