diff options
Diffstat (limited to 'mppa_k1c/SelectOpproof.v')
| -rw-r--r-- | mppa_k1c/SelectOpproof.v | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/mppa_k1c/SelectOpproof.v b/mppa_k1c/SelectOpproof.v index 9e2eec8b..2730ee91 100644 --- a/mppa_k1c/SelectOpproof.v +++ b/mppa_k1c/SelectOpproof.v @@ -872,8 +872,24 @@ Theorem eval_divu_base: Val.divu x y = Some z -> exists v, eval_expr ge sp e m le (divu_base a b) v /\ Val.lessdef z v. Proof. - intros; unfold divu_base. - econstructor; split. eapply eval_helper_2; eauto. DeclHelper. UseHelper. auto. + intros until z. + intros Hax Hby Hdiv. unfold divu_base. + pose proof (divu_is_divlu x y) as DIVU. + destruct (Val.divlu (Val.longofintu x) (Val.longofintu y)) + as [ ql | ] eqn:Ediv. + { TrivialExists. + { econstructor. eapply eval_helper_2; eauto. + { econstructor. econstructor. eassumption. + constructor. simpl. reflexivity. } + { econstructor. econstructor. eassumption. + constructor. simpl. reflexivity. } + { DeclHelper. } + { UseHelper. } + constructor. } + simpl. + congruence. + } + congruence. Qed. Theorem eval_modu_base: |