== foo ==
fun foo() {
    val b: Boolean
    if (1 < 2) {
        use(b)
    }
    else {
        b = true
    }
}
---------------------
L0:
  1 <START>                                                               INIT: in: {} out: {}              USE: in: {} out: {}
  2 mark({ val b: Boolean if (1 < 2) { use(b) } else { b = true } })
    v(val b: Boolean)                                                     INIT: in: {} out: {b=D}
    mark(if (1 < 2) { use(b) } else { b = true })                         INIT: in: {b=D} out: {b=D}
    r(1) -> <v0>
    r(2) -> <v1>
    mark(1 < 2)
    call(1 < 2, compareTo|<v0>, <v1>) -> <v2>
    jf(L2|<v2>)
  3 mark({ use(b) })                                                                                        USE: in: {b=READ} out: {b=READ}
    r(b) -> <v3>                                                                                            USE: in: {} out: {b=READ}
    mark(use(b))
    call(use(b), use|<v3>) -> <v4>
  2 jmp(L3)                                                                                                 USE: in: {} out: {}
L2 [else branch]:
  3 mark({ b = true })
    r(true) -> <v5>                                                                                         USE: in: {b=ONLY_WRITTEN_NEVER_READ} out: {b=ONLY_WRITTEN_NEVER_READ}
    w(b|<v5>)                                                             INIT: in: {b=D} out: {b=ID}       USE: in: {} out: {b=ONLY_WRITTEN_NEVER_READ}
L3 ['if' expression result]:
  2 merge(if (1 < 2) { use(b) } else { b = true }|<v4>, !<v6>) -> <v7>    INIT: in: {b=I?D} out: {b=I?D}
L1:
  1 <END>                                                                 INIT: in: {} out: {}
error:
    <ERROR>
sink:
    <SINK>                                                                                                  USE: in: {} out: {}
=====================
== use ==
fun use(vararg a: Any?) = a
---------------------
L0:
  1 <START>                                            INIT: in: {} out: {}
    v(vararg a: Any?)                                  INIT: in: {} out: {}
    magic[FAKE_INITIALIZER](vararg a: Any?) -> <v0>    INIT: in: {} out: {}
    w(a|<v0>)                                          INIT: in: {} out: {}
    r(a) -> <v1>                                       INIT: in: {} out: {}
    ret(*|<v1>) L1
L1:
    <END>
error:
    <ERROR>
sink:
    <SINK>                                                                     USE: in: {} out: {}
=====================