Remark bound_stack_data_stacksize:
  f.(Linear.fn_stacksize) <= b.(bound_stack_data).

Lemma contains_callee_saves_incr: forall j j' sp ls, inject_incr j j' -> forall rl pos, massert_imp (contains_callee_saves j sp pos rl ls) (contains_callee_saves j' sp pos rl ls).