== foo ==
fun foo(i: Int = 1, j: Int) = i + j
---------------------
L0:
  1 <START>
    v(i: Int = 1)
    jmp?(L2)                                       NEXT:[magic[FAKE_INITIALIZER](i: Int = 1) -> <v1>, r(1) -> <v0>]
    r(1) -> <v0>
L2 [after default value for parameter i]:
    magic[FAKE_INITIALIZER](i: Int = 1) -> <v1>    PREV:[jmp?(L2), r(1) -> <v0>]
    merge(i: Int = 1|<v0>, <v1>) -> <v2>
    w(i|<v2>)
    v(j: Int)
    magic[FAKE_INITIALIZER](j: Int) -> <v3>
    w(j|<v3>)
    r(i) -> <v4>
    r(j) -> <v5>
    mark(i + j)
    call(i + j, plus|<v4>, <v5>) -> <v6>
    ret(*|<v6>) L1
L1:
    <END>                                          NEXT:[<SINK>]
error:
    <ERROR>                                        PREV:[]
sink:
    <SINK>                                         PREV:[<ERROR>, <END>]
=====================