if not ot.can_resolve_for(t, t, mainmodule) then continue
var rt = ot.anchor_to(mainmodule, t)
if live_types.has(rt) then continue
+ if not rt.is_legal_in(mainmodule) then continue
if not check_depth(rt) then continue
#print "{ot}/{t} -> {rt}"
live_types.add(rt)
for t in live_types do
if not ot.can_resolve_for(t, t, mainmodule) then continue
var rt = ot.anchor_to(mainmodule, t)
+ if not rt.is_legal_in(mainmodule) then continue
live_cast_types.add(rt)
#print " {ot}/{t} -> {rt}"
end