Add ir interpreter tests

compiler/testData/ir/interpreter/proxy/customCharSequence.kt

@@ -0,0 +1,12 @@
+@CompileTimeCalculation
+class MyCharSequence(val str: String): CharSequence {
+    override val length: Int = str.length
+
+    override fun get(index: Int) = str[index]
+
+    override fun subSequence(startIndex: Int, endIndex: Int) = str.subSequence(startIndex, endIndex)
+}
+
+const val sbSize = StringBuilder(MyCharSequence("MyString")).<!EVALUATED: `8`!>length<!>
+const val appendSize = StringBuilder().append(MyCharSequence("MyString")).<!EVALUATED: `8`!>length<!>
+const val subSequenceSize = StringBuilder(StringBuilder(MyCharSequence("MyString")).subSequence(0, 4)).<!EVALUATED: `4`!>length<!>

compiler/testData/ir/interpreter/proxy/customEquals.kt

@@ -0,0 +1,13 @@
+import kotlin.collections.*
+
+@CompileTimeCalculation
+class B(val b: Int) {
+    override fun equals(other: Any?): Boolean {
+        other as? B ?: return false
+        return this.b == other.b
+    }
+
+    override fun toString(): String = "B($b)"
+}
+const val areEquals = <!EVALUATED: `true`!>listOf(B(1), B(2)) == listOf(B(1), B(2))<!>
+const val asString = listOf(B(1), B(2)).<!EVALUATED: `[B(1), B(2)]`!>toString()<!>

compiler/testData/ir/interpreter/proxy/proxyPair.kt

@@ -0,0 +1,8 @@
+import kotlin.*
+import kotlin.collections.*
+
+@CompileTimeCalculation
+class A(val a: Int)
+const val size = mapOf(1 to "A(1)").<!EVALUATED: `1`!>size<!>
+const val first = mapOf(1 to "A(1)").entries.single().<!EVALUATED: `1`!>key<!>
+const val second = mapOf(1 to "A(1)").values.<!EVALUATED: `A(1)`!>single()<!>

compiler/testData/ir/interpreter/proxy/superWrapper.kt

@@ -0,0 +1,21 @@
+import kotlin.collections.*
+
+@CompileTimeCalculation
+class MyArrayList<E>: ArrayList<E>() {
+    var addCounter = 0
+    override fun add(element: E): Boolean {
+        addCounter++
+        return super.add(element)
+    }
+}
+
+@CompileTimeCalculation
+fun test(): String {
+    val list = MyArrayList<Int>()
+    list.add(1)
+    list.add(2)
+    list.add(3)
+    return "Counter " + list.addCounter + "; size " + list.size
+}
+
+const val testResult = <!EVALUATED: `Counter 3; size 3`!>test()<!>