[Bug tree-optimization/107052] Range of __builtin_popcount can be improved with nonzerobits

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107052

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Created attachment 53633
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53633&action=edit
patch in testing

This might do it.