Add ir interpreter tests

compiler/testData/ir/interpreter/enums1.kt

@@ -0,0 +1,25 @@
+import kotlin.*
+import kotlin.collections.*
+
+@CompileTimeCalculation
+enum class EnumClass {
+    VALUE1, VALUE2
+}
+
+const val a = EnumClass.VALUE1.<!EVALUATED: `VALUE1`!>name<!>
+const val b = EnumClass.values().<!EVALUATED: `2`!>size<!>
+const val c = EnumClass.valueOf("VALUE1").<!EVALUATED: `0`!>ordinal<!>
+const val d = EnumClass.valueOf("VALUE3").<!WAS_NOT_EVALUATED: `
+Exception java.lang.IllegalArgumentException: No enum constant EnumClass.VALUE3
+	at Enums1Kt.EnumClass.valueOf(enums1.kt)
+	at Enums1Kt.<clinit>(enums1.kt:12)`!>ordinal<!>
+
+const val e1 = EnumClass.VALUE1.hashCode().<!EVALUATED: `true`!>let { it is Int && it > 0 && it == EnumClass.VALUE1.hashCode() }<!>
+const val e2 = EnumClass.VALUE1.<!EVALUATED: `VALUE1`!>toString()<!>
+const val e3 = <!EVALUATED: `true`!>EnumClass.VALUE1 == EnumClass.VALUE1<!>
+const val e4 = <!EVALUATED: `false`!>EnumClass.VALUE1 == EnumClass.VALUE2<!>
+
+const val f1 = enumValues<EnumClass>().<!EVALUATED: `2`!>size<!>
+const val f2 = enumValueOf<EnumClass>("VALUE1").<!EVALUATED: `VALUE1`!>name<!>
+
+const val j1 = enumValues<EnumClass>().<!EVALUATED: `VALUE1, VALUE2`!>joinToString { it.name }<!>