https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65478
--- Comment #7 from Jan Hubicka <hubicka at ucw dot cz> --- > > We also may consider adding bit of negative hints for cases where > > cloning would turn function called once (by noncold edge) to a > > function called twice. > > This would be much easier, although the penalty would have to be quite > big because the goodness number calculated by > good_cloning_opportunity_p is 830 and the threshold is 500. > > But given the above, perhaps, for gcc 5 at least, we might want to > introduce a 0.7 factor penalty for this and another 0.7 factor penalty > just for being within an SCC? Yep, that sounds like resonable thing to try to me. Honza
