[Bug tree-optimization/90839] Detect lsb ones counting loop (final value replacement?)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90839

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-06-12
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
popcount detection is done in niter analysis and I'd put this in there, too
(number_of_iterations_popcount).  It might be possible to generalize the
detection routine rather than creating another one or at least factoring
out common bits.