[Bug fortran/82567] [6/7/8] gfortran takes a long time to compile a simple implied-do with -Optimization.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82567

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The change occurred between revisions r197010 (2013-03-23, fast) and r197238
> (2013-03-29, slow), likely r197217.

More likely r197216.