[Bug fortran/82471] Reorder loop for unfavorable index ordering in DO CONCURRENT and FORALL

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82471

--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 42482
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42482&action=edit
Here's a first attempt...