Add ir interpreter tests

compiler/testData/ir/interpreter/defaultEquals.kt

@@ -0,0 +1,13 @@
+@CompileTimeCalculation
+class A
+
+@CompileTimeCalculation
+fun getTheSameValue(a: Any): Any = a
+
+@CompileTimeCalculation
+fun theSameObjectEquals(value: Any): Boolean {
+    return value == getTheSameValue(value) && value === getTheSameValue(value)
+}
+
+const val equals1 = A().<!EVALUATED: `false`!>equals(A())<!>
+const val equals2 = <!EVALUATED: `true`!>theSameObjectEquals(A())<!>