diff options
Diffstat (limited to 'common/Values.v')
| -rw-r--r-- | common/Values.v | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/common/Values.v b/common/Values.v index 1c03789..177cd93 100644 --- a/common/Values.v +++ b/common/Values.v @@ -620,7 +620,7 @@ Theorem modu_divu: modu x y = Some z -> exists v, divu x y = Some v /\ z = sub x (mul v y). Proof. intros. destruct x; destruct y; simpl in *; try discriminate. - destruct (Int.eq i0 Int.zero) as []_eqn; inv H. + destruct (Int.eq i0 Int.zero) eqn:?; inv H. exists (Vint (Int.divu i i0)); split; auto. simpl. rewrite Int.modu_divu. auto. generalize (Int.eq_spec i0 Int.zero). rewrite Heqb; auto. @@ -731,7 +731,7 @@ Theorem shrx_carry: add (shr x y) (shr_carry x y) = z. Proof. intros. destruct x; destruct y; simpl in H; inv H. - destruct (Int.ltu i0 (Int.repr 31)) as []_eqn; inv H1. + destruct (Int.ltu i0 (Int.repr 31)) eqn:?; inv H1. exploit Int.ltu_inv; eauto. change (Int.unsigned (Int.repr 31)) with 31. intros. assert (Int.ltu i0 Int.iwordsize = true). unfold Int.ltu. apply zlt_true. change (Int.unsigned Int.iwordsize) with 32. omega. @@ -746,7 +746,7 @@ Theorem shrx_shr: z = shr (if Int.lt p Int.zero then add x (Vint (Int.sub (Int.shl Int.one q) Int.one)) else x) (Vint q). Proof. intros. destruct x; destruct y; simpl in H; inv H. - destruct (Int.ltu i0 (Int.repr 31)) as []_eqn; inv H1. + destruct (Int.ltu i0 (Int.repr 31)) eqn:?; inv H1. exploit Int.ltu_inv; eauto. change (Int.unsigned (Int.repr 31)) with 31. intros. assert (Int.ltu i0 Int.iwordsize = true). unfold Int.ltu. apply zlt_true. change (Int.unsigned Int.iwordsize) with 32. omega. @@ -1030,8 +1030,8 @@ Proof. destruct v1; simpl in H2; try discriminate; destruct v2; simpl in H2; try discriminate; inv H0; inv H1; simpl; auto. - destruct (valid_ptr b0 (Int.unsigned i)) as []_eqn; try discriminate. - destruct (valid_ptr b1 (Int.unsigned i0)) as []_eqn; try discriminate. + destruct (valid_ptr b0 (Int.unsigned i)) eqn:?; try discriminate. + destruct (valid_ptr b1 (Int.unsigned i0)) eqn:?; try discriminate. rewrite (H _ _ Heqb2). rewrite (H _ _ Heqb0). auto. Qed. |