[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/kclass/kClassEnumArgument.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+// WITH_STDLIB
+// WITH_REFLECT
+
+import kotlin.test.*
+import kotlin.reflect.KClass
+
+enum class E(val arg: KClass<*>?) {
+    A(null as KClass<*>?),
+    B(String::class);
+}
+
+fun box(): String {
+    assertEquals("String", E.B.arg?.simpleName)
+
+    return "OK"
+}