Introduce KProperty{0,1,2}.getDelegate

#KT-8384 In Progress

compiler/testData/codegen/box/reflection/properties/getDelegate/overrideDelegatedByDelegated.kt

@@ -0,0 +1,37 @@
+// IGNORE_BACKEND: JS
+// WITH_REFLECT
+
+import kotlin.reflect.KProperty
+import kotlin.reflect.jvm.isAccessible
+import kotlin.test.*
+
+class Delegate(val value: String) {
+    operator fun getValue(instance: Any?, property: KProperty<*>) = value
+}
+
+open class Base {
+    open val x: String by Delegate("Base")
+}
+
+class Derived : Base() {
+    override val x: String by Delegate("Derived")
+}
+
+fun check(expected: String, delegate: Any?) {
+    if (delegate == null) throw AssertionError("getDelegate returned null")
+    assertEquals(expected, (delegate as Delegate).value)
+}
+
+fun box(): String {
+    val base = Base()
+    val derived = Derived()
+
+    check("Base", (Base::x).apply { isAccessible = true }.getDelegate(base))
+    check("Base", (base::x).apply { isAccessible = true }.getDelegate())
+    check("Derived", (Derived::x).apply { isAccessible = true }.getDelegate(derived))
+    check("Derived", (derived::x).apply { isAccessible = true }.getDelegate())
+
+    check("Base", (Base::x).apply { isAccessible = true }.getDelegate(derived))
+
+    return "OK"
+}