Definition optval_self_injects (ov: option val) : Prop :=
match ov with
| Some (Vptr b ofs) => False
| _ => True
end.
Remark sem_binarith_inject:
forall sem_int sem_long sem_float sem_single v1 t1 v2 t2 v v1' v2',
sem_binarith sem_int sem_long sem_float sem_single v1 t1 v2 t2 m = Some v ->
Val.inject f v1 v1' -> Val.inject f v2 v2' ->
(forall sg n1 n2, optval_self_injects (sem_int sg n1 n2)) ->
(forall sg n1 n2, optval_self_injects (sem_long sg n1 n2)) ->
(forall n1 n2, optval_self_injects (sem_float n1 n2)) ->
(forall n1 n2, optval_self_injects (sem_single n1 n2)) ->
exists v', sem_binarith sem_int sem_long sem_float sem_single v1' t1 v2' t2 m' = Some v' /\ Val.inject f v v'.
Remark sem_shift_inject:
forall sem_int sem_long v1 t1 v2 t2 v v1' v2',
sem_shift sem_int sem_long v1 t1 v2 t2 = Some v ->
Val.inject f v1 v1' -> Val.inject f v2 v2' ->
exists v', sem_shift sem_int sem_long v1' t1 v2' t2 = Some v' /\ Val.inject f v v'.
Remark sem_cmp_ptr_inj:
forall c v1 v2 v tv1 tv2,
cmp_ptr m c v1 v2 = Some v ->
Val.inject f v1 tv1 ->
Val.inject f v2 tv2 ->
exists tv, cmp_ptr m' c tv1 tv2 = Some tv /\ Val.inject f v tv.
Remark sem_cmp_inj:
forall cmp v1 tv1 ty1 v2 tv2 ty2 v,
sem_cmp cmp v1 ty1 v2 ty2 m = Some v ->
Val.inject f v1 tv1 ->
Val.inject f v2 tv2 ->
exists tv, sem_cmp cmp tv1 ty1 tv2 ty2 m' = Some tv /\ Val.inject f v tv.

Lemma sem_binary_operation_inj:
forall cenv op v1 ty1 v2 ty2 v tv1 tv2,
sem_binary_operation cenv op v1 ty1 v2 ty2 m = Some v ->
Val.inject f v1 tv1 -> Val.inject f v2 tv2 ->
exists tv, sem_binary_operation cenv op tv1 ty1 tv2 ty2 m' = Some tv /\ Val.inject f v tv.