proper compilation of enums

compiler/testData/codegen/enum/name.kt

@@ -0,0 +1,6 @@
+enum class State {
+  O
+  K
+}
+
+fun box() = "${State.O.name()}${State.K.name()}"

compiler/testData/codegen/enum/ordinal.kt

@@ -0,0 +1,8 @@
+enum class State {
+  _0
+  _1
+  _2
+  _3
+}
+
+fun box() = if(State._0.ordinal()==0 && State._1.ordinal() == 1 &&  State._2.ordinal() == 2 &&  State._3.ordinal() == 3) "OK" else "fail"

compiler/testData/codegen/enum/toString.kt

@@ -0,0 +1,6 @@
+enum class State {
+  O
+  K
+}
+
+fun box() = "${State.O}${State.K}"

compiler/testData/codegen/enum/valueof.kt

@@ -0,0 +1,11 @@
+enum class Color {
+  RED
+  BLUE
+}
+
+fun box() = if(
+     Color.valueOf("RED") == Color.RED
+  && Color.valueOf("BLUE") == Color.BLUE
+  && Color.values()[0] == Color.RED
+  && Color.values()[1] == Color.BLUE
+  ) "OK" else "fail"