https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127538
--- Comment #5 from Drea Pinski <pinskia at gcc dot gnu.org> --- Note the cost at the point of ifcvt will be the same with sub before or after the if_then_else. In gcc 15, it was only combine which did the combining of the cmp/sub. So we might need to a define_split here to handle a 4->3 insn combining.
