https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103195
--- Comment #3 from hubicka at kam dot mff.cuni.cz --- > > threader stuff would be my bet, but we need to bisect this (tfft2 is also > > quite small) > > Bad bet ;) It's caused by r12-5113-gd70ef65692fced7a. Hehe, that was my guess yeterday. Thanks for confirming. So now to figure out why better alias info makes tfft2 grow. I guess more vectorization? Thanks for bisecting this