Definition denote_tc_assert' {CS: compspecs} (a: tc_assert) (rho: environ) : mpred.
pose (P := denote_tc_assert a rho).
unfold denote_tc_assert in P.
super_unfold_lift.
destruct a; apply P.
Defined.
Definition check_pp_int' e1 e2 op t e :=
match op with
| Cop.Oeq | Cop.One =>
tc_andp'
(tc_test_eq' e1 e2)
(tc_bool (is_int_type t) (op_result_type e))
| Cop.Ole | Cop.Olt | Cop.Oge | Cop.Ogt =>
tc_andp'
(tc_test_order' e1 e2)
(tc_bool (is_int_type t) (op_result_type e))
| _ => tc_noproof
end.
(* Definition check_pl_long' e2 op t e := match op with | Cop.Oeq | Cop.One => tc_andp' (tc_iszero' e2) (tc_bool (is_int_type t) (op_result_type e)) | _ => tc_noproof end. *)
Hint Rewrite @denote_tc_assert_andp' @denote_tc_assert_andp''
@denote_tc_assert_orp' @denote_tc_assert_orp''
@denote_tc_assert_iszero' @denote_tc_assert_nonzero'
@denote_tc_assert_nodivover' @denote_tc_assert_ilt' @denote_tc_assert_llt'
@denote_tc_assert_test_eq' @denote_tc_assert_test_order'
: dtca.
Ltac dtca := autorewrite with dtca; auto.
Definition stupid_typeconv ty :=
match ty with
| Tarray t _ a => Tpointer t a
| Tfunction _ _ _ => Tpointer ty noattr
| Tint _ _ _ => typeconv ty
| _ => ty
end.
Definition classify_sub' ty1 ty2 :=
match stupid_typeconv ty1 with
| Tpointer ty a =>
match stupid_typeconv ty2 with
| Tint _ si _ => sub_case_pi ty si
| Tlong _ _ => sub_case_pl ty
| Tpointer _ _ => sub_case_pp ty
| _ => sub_default
end
| _ => sub_default
end.

Lemma classify_sub_eq : classify_sub = classify_sub'.