https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103221
--- Comment #13 from Drea Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Macleod from comment #12) > copyprop does run a few passes after VRP1, but looks like that is the first > one, and it was never run after EVRP. > EVRP is now identical to a full VRP pass, so it makes sense that we should > run copyprop somewhere after it.. it can do all the same things and probably > exposes opportunities like you have. Maybe move pass_sccopy before the first phiopt instead. Since pass_sccopy will do the copy-prop. phiopt could introduce a copy in some cases but not enough to care about for inlining reasons.
