https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076
--- Comment #33 from rguenther at suse dot de <rguenther at suse dot de> --- On Tue, 31 Mar 2015, trippels at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076 > > --- Comment #32 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- > (In reply to Richard Biener from comment #31) > > No negative effects seen. Update on the regression? P3->P1 before > > willfully downgrading later... > > It depends on the target machine. On amdfam10 it is still 12%, > on sandybridge it is less than 10%. > But tramp3d-v4.cpp compiled with gcc-5 runs 3.5% faster thanks to -ipa-icf. Ok, I'd say we should disable new passes for a fair comparison - is using -fno-ipa-icf significantly better? 10% is a lot (IMHO). I wonder how compile-time evolved on other code-bases (I see ~3% on the CSiBE compile for example, at -Os). How does -O2 compile-time compare?
