[Bug tree-optimization/95817] Failure to optimize shift with constant to compare

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95817

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement
   Last reconfirmed|                            |2021-12-16
             Status|UNCONFIRMED                 |NEW

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Well canonicalization reasons is still good as we don't optimize:

bool f(int a)
{
    return (!(a >> 7)) == !((unsigned)a > 127);
}

To just return 1;