http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60600
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> --- Or we might produce a call to __builtin_unreachable (we already do that in ipa_get_indirect_edge_target_1 in similar cases) or __builtin_abort. Tough decision, although I'll probably go for __builtin_unreachable, for the sake of consistency.