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

Lemma contains_callee_saves_exten: forall j sp ls ls' rl pos, (forall r, In r rl -> ls' (R r) = ls (R r)) -> massert_eqv (contains_callee_saves j sp pos rl ls) (contains_callee_saves j sp pos rl ls').