Changeset 880 for src/Clight/Cexec.ma

Timestamp:

Jun 3, 2011, 5:35:31 PM (8 years ago)

Author:

campbell

Message:

Add type information into Cminor.
As a result, the Clight to Cminor stage now does extra type checking.

File:

• src/Clight/Cexec.ma (modified) (3 diffs)

src/Clight/Cexec.ma

@@ -5 +5 @@
 include "common/SmallstepExec.ma".
 include "Clight/Csem.ma".
+include "Clight/TypeComparison.ma".
 
 (*
@@ -43 +44 @@
   λA,P,a. match a with [ Error _ ⇒ True | OK v ⇒ P v ].
 
-axiom TypeMismatch : String.
 axiom ValueIsNotABoolean : String.
 
@@ -333 +333 @@
       ]
   ] ].
-
-definition sz_eq_dec : ∀s1,s2:intsize. (s1 = s2) + (s1 ≠ s2).
-#s1 cases s1; #s2 cases s2; /2/; %2 ; % #H destruct; qed.
-definition sg_eq_dec : ∀s1,s2:signedness. (s1 = s2) + (s1 ≠ s2).
-#s1 cases s1; #s2 cases s2; /2/; %2 ; % #H destruct; qed.
-definition fs_eq_dec : ∀s1,s2:floatsize. (s1 = s2) + (s1 ≠ s2).
-#s1 cases s1; #s2 cases s2; /2/; %2 ; % #H destruct; qed.
-
-definition eq_nat_dec : ∀n,m:nat. Sum (n=m) (n≠m).
-#n #m lapply (refl ? (eqb n m)) cases (eqb n m) in ⊢ (???% → ?) #E
-[ %1 | %2 ] @(eqb_elim … E) // #_ #H destruct qed. 
-
-let rec type_eq_dec (t1,t2:type) : Sum (t1 = t2) (t1 ≠ t2) ≝
-match t1 return λt'. (t' = t2) + (t' ≠ t2) with
-[ Tvoid ⇒ match t2 return λt'. (Tvoid = t') + (Tvoid ≠ t') with [ Tvoid ⇒ inl ?? (refl ??) | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tint sz sg ⇒ match t2 return λt'. (Tint ?? = t') + (Tint ?? ≠ t')  with [ Tint sz' sg' ⇒
-    match sz_eq_dec sz sz' with [ inl e1 ⇒
-    match sg_eq_dec sg sg' with [ inl e2 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tfloat f ⇒ match t2 return λt'. (Tfloat ? = t') + (Tfloat ? ≠ t')  with [ Tfloat f' ⇒
-    match fs_eq_dec f f' with [ inl e1 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tpointer s t ⇒ match t2 return λt'. (Tpointer ?? = t') + (Tpointer ?? ≠ t')  with [ Tpointer s' t' ⇒
-    match eq_region_dec s s' with [ inl e1 ⇒
-      match type_eq_dec t t' with [ inl e2 ⇒ inl ??? 
-      | inr e2 ⇒ inr ?? (nmk ? (λH.match e2 with [ nmk e' ⇒ e' ? ])) ] 
-    | inr e1 ⇒ inr ?? (nmk ? (λH.match e1 with [ nmk e' ⇒ e' ? ])) ] | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tarray s t n ⇒ match t2 return λt'. (Tarray ??? = t') + (Tarray ??? ≠ t')  with [ Tarray s' t' n' ⇒
-    match eq_region_dec s s' with [ inl e1 ⇒
-      match type_eq_dec t t' with [ inl e2 ⇒
-        match eq_nat_dec n n' with [ inl e3 ⇒ inl ???
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-        | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tfunction tl t ⇒ match t2 return λt'. (Tfunction ?? = t') + (Tfunction ?? ≠ t')  with [ Tfunction tl' t' ⇒
-    match typelist_eq_dec tl tl' with [ inl e1 ⇒ 
-    match type_eq_dec t t' with [ inl e2 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-  | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tstruct i fl ⇒
-    match t2 return λt'. (Tstruct ?? = t') + (Tstruct ?? ≠ t')  with [ Tstruct i' fl' ⇒
-    match ident_eq i i' with [ inl e1 ⇒
-    match fieldlist_eq_dec fl fl' with [ inl e2 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tunion i fl ⇒
-    match t2 return λt'. (Tunion ?? = t') + (Tunion ?? ≠ t')  with [ Tunion i' fl' ⇒
-    match ident_eq i i' with [ inl e1 ⇒
-    match fieldlist_eq_dec fl fl' with [ inl e2 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    |  _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tcomp_ptr r i ⇒ match t2 return λt'. (Tcomp_ptr ? ? = t') + (Tcomp_ptr ? ? ≠ t')  with [ Tcomp_ptr r' i' ⇒ 
-    match eq_region_dec r r' with [ inl e1 ⇒
-      match ident_eq i i' with [ inl e2 ⇒ inl ???
-      | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-]
-and typelist_eq_dec (tl1,tl2:typelist) : (tl1 = tl2) + (tl1 ≠ tl2) ≝
-match tl1 return λtl'. (tl' = tl2) + (tl' ≠ tl2) with
-[ Tnil ⇒ match tl2 return λtl'. (Tnil = tl') + (Tnil ≠ tl') with [ Tnil ⇒ inl ?? (refl ??) | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Tcons t1 ts1 ⇒ match tl2 return λtl'. (Tcons ?? = tl') + (Tcons ?? ≠ tl') with [ Tnil ⇒ inr ?? (nmk ? (λH.?)) | Tcons t2 ts2 ⇒ 
-    match type_eq_dec t1 t2 with [ inl e1 ⇒
-    match typelist_eq_dec ts1 ts2 with [ inl e2 ⇒ inl ???
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-    | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ] ]
-]
-and fieldlist_eq_dec (fl1,fl2:fieldlist) : (fl1 = fl2) + (fl1 ≠ fl2) ≝
-match fl1 return λfl'. (fl' = fl2) + (fl' ≠ fl2) with
-[ Fnil ⇒ match fl2 return λfl'. (Fnil = fl') + (Fnil ≠ fl') with [ Fnil ⇒ inl ?? (refl ??) | _ ⇒ inr ?? (nmk ? (λH.?)) ]
-| Fcons i1 t1 fs1 ⇒ match fl2 return λfl'. (Fcons ??? = fl') + (Fcons ??? ≠ fl') with [ Fnil ⇒ inr ?? (nmk ? (λH.?)) | Fcons i2 t2 fs2 ⇒ 
-    match ident_eq i1 i2 with [ inl e1 ⇒
-      match type_eq_dec t1 t2 with [ inl e2 ⇒
-        match fieldlist_eq_dec fs1 fs2 with [ inl e3 ⇒ inl ???
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ]
-        | inr e ⇒ inr ?? (nmk ? (λH.match e with [ nmk e' ⇒ e' ? ])) ] ]
-]. destruct; //; qed.
-
-definition assert_type_eq : ∀t1,t2:type. res (t1 = t2) ≝
-λt1,t2. match type_eq_dec t1 t2 with [ inl p ⇒ OK ? p | inr _ ⇒ Error ? (msg TypeMismatch)].
 
 let rec is_is_call_cont (k:cont) : Sum (is_call_cont k) (Not (is_call_cont k)) ≝