http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48636
William J. Schmidt <wschmidt at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |wschmidt at gcc dot gnu.org --- Comment #43 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2013-03-01 17:48:51 UTC --- (In reply to comment #38) > Looks like for x86 r193331 led to significant regression on 172.mgrid for -m32 > -O3 -funroll-loops The same degradation was seen on powerpc64-unknown-linux-gnu with r193331. The fix by Martin Jambor for PR55334 did not help for -m32. It did give a slight bump to -m64, but did not return the performance to pre-r193331 levels. So there still seems to be a problem with 172.mgrid related to this change.