Minor. Add more tests

compiler/testData/codegen/box/inlineClasses/checkCastToInlineClassGeneric.kt

@@ -0,0 +1,22 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class UInt<T: Int>(val s: T)
+
+fun <T: Int> test(a1: Any, a2: UInt<T>?, a3: Any?, a4: Any?): Int {
+    val b1 = a1 as UInt<T>
+    val b2 = a2 as UInt<T>
+    val b3 = (a3 as UInt<T>?) as UInt<T>
+    val b4 = (a4 as? UInt<T>) as UInt<T>
+    return b1.s + b2.s + b3.s + b4.s
+}
+
+fun box(): String {
+    val u1 = UInt(1)
+    val u2 = UInt(2)
+    if (test(u1, u2, u1, u2) != 6) return "fail"
+
+    return "OK"
+}