== main ==
fun main() {
    while(0 > 1) {
      2
    }
}
---------------------
0                        <v0>: {<: Comparable<Int>}   NEW: r(0) -> <v0>                             
1                        <v1>: Int                    NEW: r(1) -> <v1>                             
0 > 1                    <v2>: Boolean                NEW: call(0 > 1, compareTo|<v0>, <v1>) -> <v2>
2                        <v3>: *                      NEW: r(2) -> <v3>                             
{ 2 }                    <v3>: *                      COPY                                          
while(0 > 1) { 2 }       !<v4>: *                                                                   
{ while(0 > 1) { 2 } }   !<v4>: *                     COPY                                          
=====================
== dowhile ==
fun dowhile() {
    do {return}
    while(0 > 1)
}
---------------------
return                         !<v0>: *                                                                   
{return}                       !<v0>: *                     COPY                                          
0                              <v1>: {<: Comparable<Int>}   NEW: r(0) -> <v1>                             
1                              <v2>: Int                    NEW: r(1) -> <v2>                             
0 > 1                          <v3>: Boolean                NEW: call(0 > 1, compareTo|<v1>, <v2>) -> <v3>
do {return} while(0 > 1)       !<v4>: *                                                                   
{ do {return} while(0 > 1) }   !<v4>: *                     COPY                                          
=====================