Proof with eauto with wd.
intros.
destruct v1,v2; simpl; auto;
unfold Val.cmpu, Val.cmpu_bool...
Qed.
Hint Immediate valid_val_cmplu :wd.

Lemma valid_val_addrmode64:
forall ge rs f fg a,
ren_domain_incr fg f ->
ge_wd fg ge ->
regset_wd f rs ->
valid_val f (eval_addrmode64 ge a rs).