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kotlin-fork/compiler/testData/cfg-variables/basic/ExhaustiveInitialization.instructions
T
Mikhail Glukhikh 436b0ec873 CFA merge for definition / initialization : more accurate handling of unknown variables #KT-13969 Fixed 
(cherry picked from commit 4a96589)
2016-09-29 15:56:47 +03:00

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== Direction ==
enum class Direction {
NORTH, SOUTH, WEST, EAST
}
---------------------
L0:
1 <START> INIT: in: {} out: {}
v(NORTH,) INIT: in: {} out: {NORTH=D}
magic[FAKE_INITIALIZER](NORTH,) -> <v0> INIT: in: {NORTH=D} out: {NORTH=D}
w(NORTH|<v0>) INIT: in: {NORTH=D} out: {NORTH=ID}
v(SOUTH,) INIT: in: {NORTH=ID} out: {NORTH=ID, SOUTH=D}
magic[FAKE_INITIALIZER](SOUTH,) -> <v1> INIT: in: {NORTH=ID, SOUTH=D} out: {NORTH=ID, SOUTH=D}
w(SOUTH|<v1>) INIT: in: {NORTH=ID, SOUTH=D} out: {NORTH=ID, SOUTH=ID}
v(WEST,) INIT: in: {NORTH=ID, SOUTH=ID} out: {NORTH=ID, SOUTH=ID, WEST=D}
magic[FAKE_INITIALIZER](WEST,) -> <v2> INIT: in: {NORTH=ID, SOUTH=ID, WEST=D} out: {NORTH=ID, SOUTH=ID, WEST=D}
w(WEST|<v2>) INIT: in: {NORTH=ID, SOUTH=ID, WEST=D} out: {NORTH=ID, SOUTH=ID, WEST=ID}
v(EAST) INIT: in: {NORTH=ID, SOUTH=ID, WEST=ID} out: {EAST=D, NORTH=ID, SOUTH=ID, WEST=ID}
magic[FAKE_INITIALIZER](EAST) -> <v3> INIT: in: {EAST=D, NORTH=ID, SOUTH=ID, WEST=ID} out: {EAST=D, NORTH=ID, SOUTH=ID, WEST=ID}
w(EAST|<v3>) INIT: in: {EAST=D, NORTH=ID, SOUTH=ID, WEST=ID} out: {EAST=ID, NORTH=ID, SOUTH=ID, WEST=ID}
L1:
<END> INIT: in: {EAST=ID, NORTH=ID, SOUTH=ID, WEST=ID} out: {EAST=ID, NORTH=ID, SOUTH=ID, WEST=ID}
error:
<ERROR> INIT: in: {} out: {}
sink:
<SINK> INIT: in: {EAST=I?, NORTH=I?, SOUTH=I?, WEST=I?} out: {EAST=I?, NORTH=I?, SOUTH=I?, WEST=I?} USE: in: {} out: {}
=====================
== foo ==
fun foo(dir: Direction): Int {
val res: Int
when (dir) {
Direction.NORTH -> res = 1
Direction.SOUTH -> res = 2
Direction.WEST -> res = 3
Direction.EAST -> res = 4
}
return res
}
---------------------
L0:
1 <START> INIT: in: {} out: {}
v(dir: Direction) INIT: in: {} out: {dir=D}
magic[FAKE_INITIALIZER](dir: Direction) -> <v0> INIT: in: {dir=D} out: {dir=D}
w(dir|<v0>) INIT: in: {dir=D} out: {dir=ID} USE: in: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, dir=READ} out: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, dir=READ}
2 mark({ val res: Int when (dir) { Direction.NORTH -> res = 1 Direction.SOUTH -> res = 2 Direction.WEST -> res = 3 Direction.EAST -> res = 4 } return res }) INIT: in: {dir=ID} out: {dir=ID}
v(val res: Int) INIT: in: {dir=ID} out: {dir=ID, res=D}
mark(when (dir) { Direction.NORTH -> res = 1 Direction.SOUTH -> res = 2 Direction.WEST -> res = 3 Direction.EAST -> res = 4 }) INIT: in: {dir=ID, res=D} out: {dir=ID, res=D} USE: in: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, dir=READ, res=READ} out: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, dir=READ, res=READ}
r(dir) -> <v1> USE: in: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, res=READ} out: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, dir=READ, res=READ}
mark(Direction.NORTH -> res = 1)
mark(Direction.NORTH)
mark(Direction.NORTH) USE: in: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, res=READ} out: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, res=READ}
r(NORTH) -> <v2> USE: in: {EAST=READ, SOUTH=READ, WEST=READ, res=READ} out: {EAST=READ, NORTH=READ, SOUTH=READ, WEST=READ, res=READ}
magic[EQUALS_IN_WHEN_CONDITION](Direction.NORTH|<v1>, <v2>) -> <v3>
jmp?(L4|<v3>) USE: in: {EAST=READ, SOUTH=READ, WEST=READ, res=READ} out: {EAST=READ, SOUTH=READ, WEST=READ, res=READ}
L3 ['when' entry body]:
r(1) -> <v4> USE: in: {res=WRITTEN_AFTER_READ} out: {res=WRITTEN_AFTER_READ}
w(res|<v4>) INIT: in: {dir=ID, res=D} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=WRITTEN_AFTER_READ}
jmp(L2) INIT: in: {dir=ID, res=ID} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=READ}
L4 [next 'when' entry]:
mark(Direction.SOUTH -> res = 2) INIT: in: {dir=ID, res=D} out: {dir=ID, res=D}
mark(Direction.SOUTH)
mark(Direction.SOUTH) USE: in: {EAST=READ, SOUTH=READ, WEST=READ, res=READ} out: {EAST=READ, SOUTH=READ, WEST=READ, res=READ}
r(SOUTH) -> <v5> USE: in: {EAST=READ, WEST=READ, res=READ} out: {EAST=READ, SOUTH=READ, WEST=READ, res=READ}
magic[EQUALS_IN_WHEN_CONDITION](Direction.SOUTH|<v1>, <v5>) -> <v6>
jmp?(L6|<v6>) USE: in: {EAST=READ, WEST=READ, res=READ} out: {EAST=READ, WEST=READ, res=READ}
L5 ['when' entry body]:
r(2) -> <v7> USE: in: {res=WRITTEN_AFTER_READ} out: {res=WRITTEN_AFTER_READ}
w(res|<v7>) INIT: in: {dir=ID, res=D} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=WRITTEN_AFTER_READ}
jmp(L2) INIT: in: {dir=ID, res=ID} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=READ}
L6 [next 'when' entry]:
mark(Direction.WEST -> res = 3) INIT: in: {dir=ID, res=D} out: {dir=ID, res=D}
mark(Direction.WEST)
mark(Direction.WEST) USE: in: {EAST=READ, WEST=READ, res=READ} out: {EAST=READ, WEST=READ, res=READ}
r(WEST) -> <v8> USE: in: {EAST=READ, res=READ} out: {EAST=READ, WEST=READ, res=READ}
magic[EQUALS_IN_WHEN_CONDITION](Direction.WEST|<v1>, <v8>) -> <v9>
jmp?(L8|<v9>) USE: in: {EAST=READ, res=READ} out: {EAST=READ, res=READ}
L7 ['when' entry body]:
r(3) -> <v10> USE: in: {res=WRITTEN_AFTER_READ} out: {res=WRITTEN_AFTER_READ}
w(res|<v10>) INIT: in: {dir=ID, res=D} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=WRITTEN_AFTER_READ}
jmp(L2) INIT: in: {dir=ID, res=ID} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=READ}
L8 [next 'when' entry]:
mark(Direction.EAST -> res = 4) INIT: in: {dir=ID, res=D} out: {dir=ID, res=D}
mark(Direction.EAST)
mark(Direction.EAST) USE: in: {EAST=READ, res=READ} out: {EAST=READ, res=READ}
r(EAST) -> <v11> USE: in: {res=READ} out: {EAST=READ, res=READ}
magic[EQUALS_IN_WHEN_CONDITION](Direction.EAST|<v1>, <v11>) -> <v12>
jmp?(L10|<v12>) USE: in: {res=READ} out: {res=READ}
L9 ['when' entry body]:
r(4) -> <v13> USE: in: {res=WRITTEN_AFTER_READ} out: {res=WRITTEN_AFTER_READ}
w(res|<v13>) INIT: in: {dir=ID, res=D} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=WRITTEN_AFTER_READ}
jmp(L2) INIT: in: {dir=ID, res=ID} out: {dir=ID, res=ID}
L10 [next 'when' entry]:
magic[EXHAUSTIVE_WHEN_ELSE](when (dir) { Direction.NORTH -> res = 1 Direction.SOUTH -> res = 2 Direction.WEST -> res = 3 Direction.EAST -> res = 4 }) -> <v14> INIT: in: {dir=ID, res=D} out: {dir=ID, res=IED}
L2 [after 'when' expression]:
merge(when (dir) { Direction.NORTH -> res = 1 Direction.SOUTH -> res = 2 Direction.WEST -> res = 3 Direction.EAST -> res = 4 }|!<v15>, !<v16>, !<v17>, !<v18>) -> <v19> INIT: in: {dir=ID, res=ID} out: {dir=ID, res=ID} USE: in: {res=READ} out: {res=READ}
r(res) -> <v20> USE: in: {} out: {res=READ}
ret(*|<v20>) L1
L1:
1 <END> INIT: in: {dir=ID} out: {dir=ID}
error:
<ERROR> INIT: in: {} out: {}
sink:
<SINK> INIT: in: {dir=I?} out: {dir=I?} USE: in: {} out: {}
=====================
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