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-rw-r--r--backend/Selectionproof.v2
-rw-r--r--backend/ValueDomain.v6
2 files changed, 5 insertions, 3 deletions
diff --git a/backend/Selectionproof.v b/backend/Selectionproof.v
index bb9bd592..20b6cf93 100644
--- a/backend/Selectionproof.v
+++ b/backend/Selectionproof.v
@@ -135,7 +135,7 @@ Proof.
inv H. econstructor; eauto.
(* default *)
econstructor. constructor. eauto. constructor.
- simpl. inv H0. auto. auto.
+ simpl. inv H0. auto.
Qed.
Lemma eval_load:
diff --git a/backend/ValueDomain.v b/backend/ValueDomain.v
index 92004a2f..ff3ccfa1 100644
--- a/backend/ValueDomain.v
+++ b/backend/ValueDomain.v
@@ -2121,12 +2121,14 @@ Proof.
assert (IP: forall i b ofs,
cmatch (Val.cmpu_bool valid c (Vint i) (Vptr b ofs)) (cmp_different_blocks c)).
{
- intros. simpl. destruct (Int.eq i Int.zero). apply cmp_different_blocks_sound. apply cmp_different_blocks_none.
+ intros. simpl. destruct (Int.eq i Int.zero && (valid b (Int.unsigned ofs) || valid b (Int.unsigned ofs - 1))).
+ apply cmp_different_blocks_sound. apply cmp_different_blocks_none.
}
assert (PI: forall i b ofs,
cmatch (Val.cmpu_bool valid c (Vptr b ofs) (Vint i)) (cmp_different_blocks c)).
{
- intros. simpl. destruct (Int.eq i Int.zero). apply cmp_different_blocks_sound. apply cmp_different_blocks_none.
+ intros. simpl. destruct (Int.eq i Int.zero && (valid b (Int.unsigned ofs) || valid b (Int.unsigned ofs - 1))).
+ apply cmp_different_blocks_sound. apply cmp_different_blocks_none.
}
unfold cmpu_bool; inversion H; subst; inversion H0; subst;
auto using cmatch_top, cmp_different_blocks_none, pcmp_none,