On Sat, Dec 7, 2013 at 1:48 AM, Bin.Cheng <amker.cheng@xxxxxxxxx> wrote: > > I just found some GIMPLE like below is generated during boostrap gcc > for x86, tree-vect-loop.c > > > <bb 637>: > # group_size_1432 = PHI <1(497), group_size_1017(660)> > # scalar_dest_1287 = PHI <scalar_dest_1228(497), scalar_dest_1012(660)> > ratio_1497 = group_size_1432 / 0; > goto <bb 501>; > > The compilation ends fine, but what is the division by 0? Pretty hard to say without more information. I just tried, and I don't see it myself. I would guess that some optimization split out the ratio == 0 case for some reason. Ian
