== main ==
fun main() {
    while(0 > 1) {
      2
    }
}
---------------------
L0:
  1 <START>
  2 mark({ while(0 > 1) { 2 } })
L2 [loop entry point]:
L5 [condition entry point]:
    r(0) -> <v0>                                 PREV:[mark({ while(0 > 1) { 2 } }), jmp(L2 [loop entry point])]
    r(1) -> <v1>
    mark(0 > 1)
    call(0 > 1, compareTo|<v0>, <v1>) -> <v2>
    mark(while(0 > 1) { 2 })
    jf(L3 [loop exit point]|<v2>)                NEXT:[read (Unit), mark({ 2 })]
L4 [body entry point]:
  3 mark({ 2 })
    r(2) -> <v3>
  2 jmp(L2 [loop entry point])                   NEXT:[r(0) -> <v0>]
L3 [loop exit point]:
    read (Unit)                                  PREV:[jf(L3 [loop exit point]|<v2>)]
L1:
  1 <END>                                        NEXT:[<SINK>]
error:
    <ERROR>                                      PREV:[]
sink:
    <SINK>                                       PREV:[<ERROR>, <END>]
=====================
== dowhile ==
fun dowhile() {
    do {return}
    while(0 > 1)
}
---------------------
L0:
  1 <START>
  2 mark({ do {return} while(0 > 1) })
  3 mark(do {return} while(0 > 1))
L2 [loop entry point]:
L4 [body entry point]:
    mark({return})
    ret L1                                       NEXT:[<END>]
L5 [condition entry point]:
-   r(0) -> <v1>                                 PREV:[]
-   r(1) -> <v2>                                 PREV:[]
-   mark(0 > 1)                                  PREV:[]
-   call(0 > 1, compareTo|<v1>, <v2>) -> <v3>    PREV:[]
-   jt(L2 [loop entry point]|<v3>)               NEXT:[read (Unit), mark({return})]                  PREV:[]
L3 [loop exit point]:
-   read (Unit)                                  PREV:[]
L1:
  1 <END>                                        NEXT:[<SINK>]                                       PREV:[ret L1]
error:
    <ERROR>                                      PREV:[]
sink:
    <SINK>                                       PREV:[<ERROR>, <END>]
=====================