== foo ==
fun foo(f: () -> Unit) {
    f()
}
---------------------
          <v0>: {<: () -> Unit}   NEW: magic[FAKE_INITIALIZER](f: () -> Unit) -> <v0>
f         <v1>: {<: () -> Unit}   NEW: r(f) -> <v1>                                  
f()       <v2>: *                 NEW: call(f(), invoke|<v1>) -> <v2>                
{ f() }   <v2>: *                 COPY                                               
=====================