diff options
Diffstat (limited to 'backend/RTLtyping.v')
| -rw-r--r-- | backend/RTLtyping.v | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/backend/RTLtyping.v b/backend/RTLtyping.v index e27704c..e8ae7ae 100644 --- a/backend/RTLtyping.v +++ b/backend/RTLtyping.v @@ -838,6 +838,16 @@ Proof. rewrite H3. constructor. Qed. +Lemma wt_instr_inv: + forall s f sp pc rs m i, + wt_state (State s f sp pc rs m) -> + f.(fn_code)!pc = Some i -> + exists env, wt_instr f env i /\ wt_regset env rs. +Proof. + intros. inv H. exists env; split; auto. + inv WT_FN. eauto. +Qed. + End SUBJECT_REDUCTION. |