https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65492
--- Comment #7 from Jan Hubicka <hubicka at ucw dot cz> --- > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65492 > > Richard Biener <rguenth at gcc dot gnu.org> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |hubicka at gcc dot gnu.org > > --- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> --- > --param max-peel-branches default of 32 seems to be quite high. For this > loop we have two branches on the hot path and 4 times unrolling. > > Honza - how did you arrive at the default of 32? Shouldn't that depend > on the number of other stmts thus rather look at branch density? In https://gcc.gnu.org/ml/gcc-patches/2012-10/msg02716.html I claim value around 32 is needed for apply. (not that I would recall that) I do not have really strong opinion concerning the branch density. Honza
