[Bug middle-end/105253] __popcountdi2 calls generated in kernel code with gcc12

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105253

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
   Last reconfirmed|                            |2022-04-13
     Ever confirmed|0                           |1

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 52796
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52796&action=edit
gcc12-pr105253.patch

Now in (untested) patch form.
Note, the kernel still should provide __popcount[sd]i2, but in this case the
intent was that we don't emit calls and only hw instructions.