https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125907
--- Comment #5 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- > The initilization of 0 is very cheap, not sure if it's worth to do uncprop > for it. Or maybe we should prevent propgate a single-use SSA-NAME into a PHI since it extends the live range plus hurt backend optimization for cmp.
