Add ir interpreter tests

compiler/testData/ir/interpreter/interface.kt

@@ -0,0 +1,42 @@
+interface A {
+    @CompileTimeCalculation
+    fun getStr(): String
+}
+
+interface B : A {
+    @CompileTimeCalculation
+    fun getInt(): Int
+}
+
+class C @CompileTimeCalculation constructor(@CompileTimeCalculation val num: Int) : B {
+    @CompileTimeCalculation
+    override fun getStr(): String {
+        return num.toString()
+    }
+
+    @CompileTimeCalculation
+    override fun getInt(): Int {
+        return num
+    }
+}
+
+@CompileTimeCalculation
+fun getClassAsA(num: Int): A {
+    return C(num)
+}
+
+@CompileTimeCalculation
+fun getClassAsB(num: Int): B {
+    return C(num)
+}
+
+@CompileTimeCalculation
+fun getClassAsC(num: Int): C {
+    return C(num)
+}
+
+const val num1 = getClassAsA(1).<!EVALUATED: `1`!>getStr()<!>
+const val num2 = getClassAsB(2).<!EVALUATED: `2`!>getStr()<!>
+const val num3 = getClassAsB(3).<!EVALUATED: `3`!>getInt()<!>
+const val num4 = getClassAsC(4).<!EVALUATED: `4`!>getStr()<!>
+const val num5 = getClassAsC(5).<!EVALUATED: `5`!>getInt()<!>