Add ir interpreter tests

compiler/testData/ir/interpreter/helpers/Sets.kt

@@ -0,0 +1,41 @@
+@file:kotlin.jvm.JvmMultifileClass
+@file:kotlin.jvm.JvmName("SetsKt")
+
+package kotlin.collections
+
+internal object EmptySet : Set<Nothing>, Serializable {
+    private const val serialVersionUID: Long = 3406603774387020532
+
+    override fun equals(other: Any?): Boolean = other is Set<*> && other.isEmpty()
+    override fun hashCode(): Int = 0
+    override fun toString(): String = "[]"
+
+    override val size: Int get() = 0
+    override fun isEmpty(): Boolean = true
+    override fun contains(element: Nothing): Boolean = false
+    override fun containsAll(elements: Collection<Nothing>): Boolean = elements.isEmpty()
+
+    override fun iterator(): Iterator<Nothing> = EmptyIterator
+
+    private fun readResolve(): Any = EmptySet
+}
+
+public fun <T> emptySet(): Set<T> = EmptySet
+
+public fun <T> setOf(vararg elements: T): Set<T> = if (elements.size > 0) elements.toSet() else emptySet()
+
+public inline fun <T> setOf(): Set<T> = emptySet()
+
+public inline fun <T> mutableSetOf(): MutableSet<T> = LinkedHashSet()
+
+public fun <T> mutableSetOf(vararg elements: T): MutableSet<T> = elements.toCollection(LinkedHashSet(mapCapacity(elements.size)))
+
+public inline fun <T> hashSetOf(): HashSet<T> = kotlin.UnsupportedOperationException("This is intrinsic")
+
+public fun <T> hashSetOf(vararg elements: T): HashSet<T> = kotlin.UnsupportedOperationException("This is intrinsic")
+
+internal fun <T> Set<T>.optimizeReadOnlySet() = when (size) {
+    0 -> emptySet()
+    1 -> setOf(iterator().next())
+    else -> this
+}