diff options
Diffstat (limited to 'arm/SelectOpproof.v')
| -rw-r--r-- | arm/SelectOpproof.v | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/arm/SelectOpproof.v b/arm/SelectOpproof.v index 9beb1ad..9fbab44 100644 --- a/arm/SelectOpproof.v +++ b/arm/SelectOpproof.v @@ -716,12 +716,7 @@ Qed. Theorem eval_cast8signed: unary_constructor_sound cast8signed (Val.sign_ext 8). Proof. - red; intros. unfold cast8signed. - exploit (eval_shlimm (Int.repr 24)); eauto. intros [v1 [A1 B1]]. - exploit (eval_shrimm (Int.repr 24)). eexact A1. intros [v2 [A2 B2]]. - exists v2; split; auto. - destruct x; simpl; auto. simpl in *. inv B1. simpl in *. inv B2. - rewrite Int.sign_ext_shr_shl. auto. compute; auto. + red; intros. unfold cast8signed. TrivialExists. Qed. Theorem eval_cast8unsigned: unary_constructor_sound cast8unsigned (Val.zero_ext 8). @@ -732,12 +727,7 @@ Qed. Theorem eval_cast16signed: unary_constructor_sound cast16signed (Val.sign_ext 16). Proof. - red; intros. unfold cast16signed. - exploit (eval_shlimm (Int.repr 16)); eauto. intros [v1 [A1 B1]]. - exploit (eval_shrimm (Int.repr 16)). eexact A1. intros [v2 [A2 B2]]. - exists v2; split; auto. - destruct x; simpl; auto. simpl in *. inv B1. simpl in *. inv B2. - rewrite Int.sign_ext_shr_shl. auto. compute; auto. + red; intros. unfold cast16signed. TrivialExists. Qed. Theorem eval_cast16unsigned: unary_constructor_sound cast16unsigned (Val.zero_ext 16). |