Instance Clight_newSem ge : Semantics :=
    { semG := G; semC := C; semSem := CLN_evsem ge; the_ge := ge }.

Lemma builtin_event_determ ef m vargs T1 (BE1: builtin_event ef m vargs T1) T2 (BE2: builtin_event ef m vargs T2): T1=T2.