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

[rguenth at gcc dot gnu.org]

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

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note I think this is sth for a frontend-optimization given the FE has a better
idea about dependences according to Fortran rules.