Tests for for-in optimization with unsigned ranges

compiler/testData/codegen/bytecodeText/forLoop/forInOptimizableUnsignedRange.kt

@@ -0,0 +1,53 @@
+// IGNORE_BACKEND: JVM_IR
+
+fun testUIntRangeLiteral(a: UInt, b: UInt): Int {
+    var s = 0
+    for (x in a .. b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+fun testULongRangeLiteral(a: ULong, b: ULong): Int {
+    var s = 0
+    for (x in a .. b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+fun testUIntUntil(a: UInt, b: UInt): Int {
+    var s = 0
+    for (x in a until b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+fun testULongUntil(a: ULong, b: ULong): Int {
+    var s = 0
+    for (x in a until b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+fun testUIntDownTo(a: UInt, b: UInt): Int {
+    var s = 0
+    for (x in a downTo b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+fun testULongDownTo(a: ULong, b: ULong): Int {
+    var s = 0
+    for (x in a downTo b) {
+        s += x.toInt()
+    }
+    return s
+}
+
+// 0 iterator
+// 0 hasNext
+// 0 next