On 03/01/2010 02:44 PM, Siarhei Siamashka wrote: > Also "Restructure the code to use switches instead of ifs" part probably may > have uncertain effect on performance. Optimization manuals say that ifs are > generally faster than switches when one of the cases has much higher > probability than the others.
Do you plan to use the likely/unlikely macro there? IIRC __builtin_expect works with switches, probably could be interesting check that. Somehow unrelate: I wonder if anybody tried to use gcc pgo. Given we have quite a good coverage from the test maybe it could lead to interesting results. lu -- Luca Barbato Gentoo/linux http://dev.gentoo.org/~lu_zero _______________________________________________ Pixman mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/pixman
