Add ir interpreter tests

compiler/testData/ir/interpreter/instanceOf.kt

@@ -0,0 +1,22 @@
+interface Base
+
+@CompileTimeCalculation
+open class A : Base
+
+@CompileTimeCalculation
+class B : A()
+
+const val a1 = 1 is Int
+const val a2 = 2 !is Int
+
+const val b1 = <!EVALUATED: `true`!>A() is Base<!>
+const val b2 = <!EVALUATED: `false`!>A() !is Base<!>
+const val b3 = <!EVALUATED: `true`!>A() is A<!>
+const val b4 = <!EVALUATED: `false`!>A() !is A<!>
+
+const val c1 = <!EVALUATED: `true`!>B() is Base<!>
+const val c2 = <!EVALUATED: `false`!>B() !is Base<!>
+const val c3 = <!EVALUATED: `true`!>B() is A<!>
+const val c4 = <!EVALUATED: `false`!>B() !is A<!>
+const val c5 = <!EVALUATED: `true`!>B() is B<!>
+const val c6 = <!EVALUATED: `false`!>B() !is B<!>