== test ==
fun test(): Int {
    val j = 1
    fun local() = 1
    return local()
}
---------------------
1                                              <v0>: Int   NEW: r(1) -> <v0>
local()                                        <v1>: Int   NEW: call(local(), local) -> <v1>
return local()                                 !<v2>: *
{ val j = 1 fun local() = 1 return local() }   !<v2>: *    COPY
=====================
== local ==
fun local() = 1
---------------------
1   <v0>: Int   NEW: r(1) -> <v0>
=====================