== test ==
fun test() {
    throw Exception()
    test()
}
---------------------
l0:
    <START>           NEXT:[r(Exception)]      PREV:[]
    r(Exception)      NEXT:[r(Exception())]    PREV:[<START>]
    r(Exception())    NEXT:[jmp(error)]        PREV:[r(Exception)]
    jmp(error)        NEXT:[<ERROR>]           PREV:[r(Exception())]
-   r(test)           NEXT:[r(test())]         PREV:[]
-   r(test())         NEXT:[<END>]             PREV:[]
l1:
    <END>             NEXT:[<SINK>]            PREV:[]
error:
    <ERROR>           NEXT:[<SINK>]            PREV:[jmp(error)]
sink:
    <SINK>            NEXT:[]                  PREV:[<ERROR>, <END>]
=====================