Merge pull request #71011 from DougGregor/isolation-any-actor

Switch #isolation from AnyActor to Actor

Author: DougGregor

lib/Sema/CSGen.cpp

@@ -3916,7 +3916,7 @@ namespace {
 
     Type visitCurrentContextIsolationExpr(CurrentContextIsolationExpr *E) {
       auto actorProto = CS.getASTContext().getProtocol(
-          KnownProtocolKind::AnyActor);
+          KnownProtocolKind::Actor);
       return OptionalType::get(actorProto->getDeclaredExistentialType());
     }
 

stdlib/public/Concurrency/Actor.swift

@@ -73,8 +73,11 @@ public func _defaultActorDestroy(_ actor: AnyObject)
 @usableFromInline
 internal func _enqueueOnMain(_ job: UnownedJob)
 
+#if $Macros
 /// Produce a reference to the actor to which the enclosing code is
 /// isolated, or `nil` if the code is nonisolated.
 @available(SwiftStdlib 5.1, *)
 @freestanding(expression)
-public macro isolation() -> (any AnyActor)? = Builtin.IsolationMacro
+public macro isolation() -> (any Actor)? = Builtin.IsolationMacro
+#endif
+