[Bug c++/59845] loop optimization problem when profiling

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59845

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>(constant folding problem within loop?)

No it is doing the following:

if (n>=1)
{
  i = 1;
  while (true)
    {
      if (n%i == 0)
        {
          printf("\n%d", i);
          i++;
          if (n/2 < i) break;
        }
      else
        {
          i++;
          if (n/2 < i) break;
        }
    }

}


Notice the load from n is not pulled out of the loop and that is because the
compiler thinks n escapes via scanf.