https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67975
--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- (In reply to Richard Biener from comment #4) > https://gcc.gnu.org/ml/gcc-patches/2015-10/msg01580.html > > Hope that fixes all cases you ran into. Yeah, thanks. That fixes the builtins-20.c failures that I was seeing after moving fold_strip_sign_ops to gimple.