On Wed, Jun 17, 2009 at 02:41:54PM -0400, Bill Nottingham wrote: > Gregory Maxwell (gmaxwell@xxxxxxxxx) said: > > Consider: > > > > -Os on the x86 build? > > Back when I tested before, -Os unilaterally made things worse across > Athlon64/C2D/Atom. Note that GCC 4.4 switches -Os on for unlikely executed basic blocks and/or unlikely executed functions (of course profile feedback helps here a lot, but even without it the heuristics gets it right in many cases), so forcing -Os for all code, even hot, is not a good idea. On the other side, compiling everything with -O3 is going to bloat code a lot, just compile with -O3 the hot compilation units or even better just hot functions. Jakub -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
