== test ==
fun test(s: String?) {
    s?.length
}
---------------------
                <v0>: {<: String?}         NEW: magic[FAKE_INITIALIZER](s: String?) -> <v0>
s               <v1>: {<: CharSequence?}   NEW: r(s) -> <v1>                               
length          <v2>: *                    NEW: r(length|<v1>) -> <v2>                     
s?.length       <v2>: *                    COPY                                            
{ s?.length }   <v2>: *                    COPY                                            
=====================