> Jan Hubicka <hubi...@ucw.cz> writes: > > > There are similar testcases in bugzilla where we do not devirtualize > > because we > > lost track of type promises C++ language makes on memory accesses. This may > > give us a clue how common these are. > > How would the user know without some optional warning?
I can know - I can implement this speculatively and get stats how many cases this would catch if we had infrastructure for it. I plan to gather some stats on firefox soonish. Honza > > -Andi