http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31139
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I have not tested this with latest trunk, but I wonder if any of the recent
> optimization work has improved this. Can it be closed yet?
A quick test on a 2.5Ghz Core2Duo at revision 200321 with -Ofast shows
Fortran: 0.330040932
c_sse: 0.225150943
c_struct: 0.227035046
and with -Ofast -funroll-loops
Fortran: 0.213014960
c_sse: 0.223238945
c_struct: 0.209081888
The change occured between 4.5 and 4.6 (note that 4.6 and 4.7 gives 0.263675928
without -funroll-loops). Is this still an issue?
