Section X86WD.
Variable f: memren.
Definition regset_wd rs : Prop :=
forall r, valid_val f (Pregmap.get r rs).
Definition core_wd c : Prop :=
match c with State rs _ => regset_wd rs end.
Definition ge_wd (the_ge: genv) : Prop :=
(forall b, Maps.PTree.get b (genv_defs the_ge) ->
f b) /\
(forall id ofs v, Senv.symbol_address the_ge id ofs = v ->
valid_val f v).
End X86WD.

Lemma regset_wd_incr :
forall f1 f2 rs
(Hincr: ren_domain_incr f1 f2)
(Hwd: regset_wd f1 rs),
regset_wd f2 rs.