CFG exhaustive when else instruction for KT-8700

2015-12-14 16:08:01 +03:00
parent 697228eae0
commit b805ce06c2
25 changed files with 446 additions and 51 deletions
@@ -0,0 +1,14 @@
+enum class Color { RED, GREEN, BLUE }
+
+fun foo(arr: Array<Color>): Color {
+    loop@ for (color in arr) {
+        when (color) {
+            Color.RED -> return color
+            Color.GREEN -> break@loop
+            Color.BLUE -> if (arr.size == 1) return color else continue@loop
+        }
+        // Unreachable
+        <!UNREACHABLE_CODE!>return Color.BLUE<!>
+    }
+    return Color.GREEN
+}
@@ -0,0 +1,25 @@
+package
+
+public fun foo(/*0*/ arr: kotlin.Array<Color>): Color
+
+public final enum class Color : kotlin.Enum<Color> {
+    enum entry RED
+
+    enum entry GREEN
+
+    enum entry BLUE
+
+    private constructor Color()
+    public final override /*1*/ /*fake_override*/ val name: kotlin.String
+    public final override /*1*/ /*fake_override*/ val ordinal: kotlin.Int
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: Color): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    @kotlin.Deprecated(level = DeprecationLevel.ERROR, message = "Use 'values()' function instead", replaceWith = kotlin.ReplaceWith(expression = "this.values()", imports = {})) public final /*synthesized*/ val values: kotlin.Array<Color>
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): Color
+    public final /*synthesized*/ fun values(): kotlin.Array<Color>
+}
@@ -0,0 +1,11 @@
+fun foo(b: Boolean): Int {
+    val x: Int
+    val y: Int
+    when (b) {
+        true -> y = 1
+        false -> y = 0
+    }
+    // x is initialized here
+    x = 3
+    return x + y
+}
@@ -0,0 +1,3 @@
+package
+
+public fun foo(/*0*/ b: kotlin.Boolean): kotlin.Int
@@ -0,0 +1,14 @@
+enum class Direction {
+    NORTH, SOUTH, WEST, EAST
+}
+
+fun foo(dir: Direction): Int {
+    when (dir) {
+        Direction.NORTH -> return 1
+        Direction.SOUTH -> throw AssertionError("!!!")
+        Direction.WEST  -> return 3
+        Direction.EAST  -> return 4
+    }
+    // Error: Unreachable code. Return is not required.
+    <!UNREACHABLE_CODE!>if (dir == Direction.SOUTH) return 2<!>
+}
@@ -0,0 +1,27 @@
+package
+
+public fun foo(/*0*/ dir: Direction): kotlin.Int
+
+public final enum class Direction : kotlin.Enum<Direction> {
+    enum entry NORTH
+
+    enum entry SOUTH
+
+    enum entry WEST
+
+    enum entry EAST
+
+    private constructor Direction()
+    public final override /*1*/ /*fake_override*/ val name: kotlin.String
+    public final override /*1*/ /*fake_override*/ val ordinal: kotlin.Int
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: Direction): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    @kotlin.Deprecated(level = DeprecationLevel.ERROR, message = "Use 'values()' function instead", replaceWith = kotlin.ReplaceWith(expression = "this.values()", imports = {})) public final /*synthesized*/ val values: kotlin.Array<Direction>
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): Direction
+    public final /*synthesized*/ fun values(): kotlin.Array<Direction>
+}
@@ -0,0 +1,22 @@
+fun foo(a: Boolean, b: Boolean): Int {
+    val x: Int
+    if (a) {
+        x = 1
+    }
+    when (b) {
+        true -> <!VAL_REASSIGNMENT!>x<!> = 2
+        false -> x = 3
+    }
+    return x
+}
+
+fun bar(a: Boolean, b: Boolean): Int {
+    val x: Int
+    if (a) {
+        x = 1
+    }
+    when (b) {
+        false -> <!VAL_REASSIGNMENT!>x<!> = 3
+    }
+    return <!UNINITIALIZED_VARIABLE!>x<!>
+}
@@ -0,0 +1,4 @@
+package
+
+public fun bar(/*0*/ a: kotlin.Boolean, /*1*/ b: kotlin.Boolean): kotlin.Int
+public fun foo(/*0*/ a: kotlin.Boolean, /*1*/ b: kotlin.Boolean): kotlin.Int
@@ -0,0 +1,22 @@
+fun foo(a: Boolean, b: Boolean): Int {
+    var x: Int
+    if (a) {
+        x = 1
+    }
+    when (b) {
+        true -> x = 2
+        false -> x = 3
+    }
+    return x
+}
+
+fun bar(a: Boolean, b: Boolean): Int {
+    var x: Int
+    if (a) {
+        x = 1
+    }
+    when (b) {
+        false -> x = 3
+    }
+    return <!UNINITIALIZED_VARIABLE!>x<!>
+}
@@ -0,0 +1,4 @@
+package
+
+public fun bar(/*0*/ a: kotlin.Boolean, /*1*/ b: kotlin.Boolean): kotlin.Int
+public fun foo(/*0*/ a: kotlin.Boolean, /*1*/ b: kotlin.Boolean): kotlin.Int