Steven and Jerry,
If someone can confirm that this patch causes the drop, I can help
trying to find a fix.
amd64/Cygwin_NT
$ /irun/bin/gfortran -O3 -funroll-loops -ffast-math -march=opteron ac.f90
118372 20.2s
118475 20.4s Bonzini's patch
118704 16.2s
I believe that the improvement is FX's and my patch for MOD.
Notice that this is a single core machine and that there is a PR out on
the vectorizer. Could this be the problem, since the suse tests are
done on a two core machine, if I understood correctly?
Paul