https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114626
--- Comment #3 from anlauf at gcc dot gnu.org ---
Another option is to not declare max_sum as parameter but as variable.
With
integer :: max_sum = 2 * max_ij ** 3
the code compiles almost instantly, but it has noticeable runtime.
(But it performs much better here than with Intel... :)
