SILGen: resilient class tests

- final fields of resilient classes are accessed through accessor
- accessors are not transparent

Seems this already works.

Author: slavapestov

test/Inputs/resilient_class.swift

@@ -25,6 +25,7 @@ public class OutsideParent {
 
 public class ResilientOutsideParent {
   public var property: String = "ResilientOutsideParent.property"
+  public final var finalProperty: String = "ResilientOutsideParent.finalProperty"
 
   public class var classProperty: String {
     return "ResilientOutsideParent.classProperty"

test/SILGen/class_resilience.swift

@@ -0,0 +1,28 @@
+// RUN: %target-swift-frontend -I %S/../Inputs -enable-source-import -emit-silgen -enable-resilience %s | FileCheck %s
+
+import resilient_class
+
+// Accessing final property of resilient class from different resilience domain
+// through accessor
+
+// CHECK-LABEL: sil @_TF16class_resilience20finalPropertyOfOtherFC15resilient_class22ResilientOutsideParentT_
+// CHECK: function_ref @_TFC15resilient_class22ResilientOutsideParentg13finalPropertySS
+
+public func finalPropertyOfOther(other: ResilientOutsideParent) {
+  _ = other.finalProperty
+}
+
+public class MyResilientClass {
+  public final var finalProperty: String = "MyResilientClass.finalProperty"
+}
+
+// Accessing final property of resilient class from my resilience domain
+// directly
+
+// CHECK-LABEL: sil @_TF16class_resilience19finalPropertyOfMineFCS_16MyResilientClassT_
+// CHECK: ref_element_addr %0 : $MyResilientClass, #MyResilientClass.finalProperty
+
+public func finalPropertyOfMine(other: MyResilientClass) {
+  _ = other.finalProperty
+}
+