(** A variant of [transl_expr_charact], for use when the destination register is the one associated with a variable. *)

Lemma convert_builtin_res_charact:
forall map oty res s res' s' INCR
(TR: convert_builtin_res map oty res s = OK res' s' INCR)
(WF: map_valid map s),
tr_builtin_res map res res'.