[Bug middle-end/124630] popcnt (a ^ (a - 1)) -1 is ctz when a is known non-zero

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124630

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

           What    |Removed                     |Added
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           Keywords|                            |missed-optimization
           Severity|normal                      |enhancement