[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

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced to just -O2:
int
foo (unsigned long long *p)
{
  int i, cnt = 0;
  unsigned long long elem;
  for (i = 0; i < (256 / 64); i++)
    {
      elem = p[i];
      for (; elem; cnt++)
        elem &= elem - 1;
    }
  return cnt;
}
Started with r12-8041-g973a2ce71f8dab559fbbfc34b59e39e047df74a6
Wonder how that affects the testcase...