(** If the result is in a pair of registers, those registers are distinct and have type [Tint] at least. *)

Lemma loc_result_pair:
forall sg,
match loc_result sg with
| One _ => True
| Twolong r1 r2 =>
r1 <> r2 /\ sg.(sig_res) = Some Tlong
/\ subtype Tint (mreg_type r1) = true /\ subtype Tint (mreg_type r2) = true
/\ Archi.ptr64 = false
end.