Merge remote-tracking branch 'origin/master' into master-next

Author: swift-ci

test/Interpreter/SDK/objc_getClass.swift

@@ -179,6 +179,7 @@ testSuite.test("GenericMangled")
                 reason: "objc_getClass hook not present"))
   .requireOwnProcess()
   .code {
+  guard #available(macOS 9999, iOS 9999, watchOS 9999, tvOS 9999, *) else { return }
   requireClass(named:   "_TtC4main24ConstrainedSwiftSubclass",
                demangledName: "main.ConstrainedSwiftSubclass")
   requireClass(named:   "_TtC4main26ConstrainedSwiftSuperclass",

validation-test/Reflection/inherits_ObjCClasses.swift

@@ -9,6 +9,9 @@
 
 // REQUIRES: objc_interop
 // REQUIRES: executable_test
+// REQUIRES: OS=macosx || OS=ios || OS=tvos
+// NOTE: Test is temporarily disabled for watchOS until we can figure out why
+// it's failing there. rdar://problem/50898688
 
 import simd
 import ObjCClasses