diff options
Diffstat (limited to 'powerpc/NeedOp.v')
| -rw-r--r-- | powerpc/NeedOp.v | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/powerpc/NeedOp.v b/powerpc/NeedOp.v index 9a579cc5..5ea09bd8 100644 --- a/powerpc/NeedOp.v +++ b/powerpc/NeedOp.v @@ -65,6 +65,7 @@ Definition needs_of_operation (op: operation) (nv: nval): list nval := | Ofloatofwords | Omakelong => op2 (default nv) | Olowlong | Ohighlong => op1 (default nv) | Ocmp c => needs_of_condition c + | Osel c ty => nv :: nv :: needs_of_condition c end. Definition operation_is_redundant (op: operation) (nv: nval): bool := @@ -147,6 +148,10 @@ Proof. erewrite needs_of_condition_sound by eauto. subst v; simpl. auto with na. subst v; auto with na. +- destruct (eval_condition c args m) as [b|] eqn:EC. + erewrite needs_of_condition_sound by eauto. + apply select_sound; auto. + simpl; auto with na. Qed. Lemma operation_is_redundant_sound: |