Remove _silgen_name from all Apple overlays except Dispatch and Foundation

apinotes/AppKit.apinotes

@@ -1369,3 +1369,6 @@ Enumerators:
   SwiftName: viewNotSizable
 - Name: NSWindowStyleMaskBorderless
   SwiftName: borderless
+Functions:
+- Name: NSApplicationMain
+  SwiftPrivate: true

stdlib/public/SDK/AppKit/AppKit.swift

@@ -62,10 +62,13 @@ public extension NSGradient {
 
 // Fix the ARGV type of NSApplicationMain, which nonsensically takes
 // argv as a const char**.
-@_silgen_name("NSApplicationMain")
 public func NSApplicationMain(
   _ argc: Int32, _ argv: UnsafeMutablePointer<UnsafeMutablePointer<CChar>?>
-) -> Int32
+) -> Int32 {
+  return argv.withMemoryRebound(to: UnsafePointer<CChar>.self, capacity: Int(argc)) {
+    __NSApplicationMain(argc, $0)
+  }
+}
 
 extension NSColor : _ExpressibleByColorLiteral {
   public required convenience init(colorLiteralRed red: Float, green: Float,

stdlib/public/SDK/GameplayKit/CMakeLists.txt

@@ -1,6 +1,5 @@
 add_swift_library(swiftGameplayKit ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
   GameplayKit.swift
-  GameplayKit.mm
 
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"
   LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"

stdlib/public/SDK/GameplayKit/GameplayKit.swift

@@ -72,10 +72,11 @@ extension GKEntity {
   }
 }
 
-@_silgen_name("GK_Swift_GKStateMachine_stateForClass")
-internal func GK_Swift_GKStateMachine_stateForClass(
-  _ self_: AnyObject,
-  _ stateClass: AnyObject) -> AnyObject?
+@objc
+internal protocol _SwiftGKStateMachineLike {
+  @objc(stateForClass:)
+  func state(forClass: AnyClass) -> AnyObject?
+}
 
 @available(iOS, introduced: 9.0)
 @available(OSX, introduced: 10.11)
@@ -85,8 +86,9 @@ extension GKStateMachine {
   /// - Parameter forClass: the type of the state you want to get
   public func state<StateType : GKState>(
     forClass stateClass: StateType.Type) -> StateType? {
-    return GK_Swift_GKStateMachine_stateForClass(
-      self, stateClass) as! StateType?
+    // FIXME: GameplayKit marked state(forClass:) unavailable, which means we
+    // can't use it from SwiftPrivate. Bounce through perform(_:with:) instead.
+    return self.perform(#selector(_SwiftGKStateMachineLike.state(forClass:)), with: stateClass)?.takeUnretainedValue() as! StateType?
   }
 }
 

stdlib/public/SDK/ObjectiveC/CMakeLists.txt

@@ -1,5 +1,4 @@
 add_swift_library(swiftObjectiveC ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
-  ObjectiveC.mm
   ObjectiveC.swift
 
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"

stdlib/public/SDK/ObjectiveC/ObjectiveC.swift

@@ -12,6 +12,7 @@
 
 @_exported
 import ObjectiveC
+import _SwiftObjectiveCOverlayShims
 
 //===----------------------------------------------------------------------===//
 // Objective-C Primitive Types
@@ -180,18 +181,12 @@ typealias Zone = NSZone
 // @autoreleasepool substitute
 //===----------------------------------------------------------------------===//
 
-@_silgen_name("_swift_objc_autoreleasePoolPush")
-func __pushAutoreleasePool() -> OpaquePointer
-
-@_silgen_name("_swift_objc_autoreleasePoolPop")
-func __popAutoreleasePool(_ pool: OpaquePointer)
-
 public func autoreleasepool<Result>(
   invoking body: () throws -> Result
 ) rethrows -> Result {
-  let pool = __pushAutoreleasePool()
+  let pool = _swift_objc_autoreleasePoolPush()
   defer {
-    __popAutoreleasePool(pool)
+    _swift_objc_autoreleasePoolPop(pool)
   }
   return try body()
 }

stdlib/public/SDK/SafariServices/CMakeLists.txt

@@ -1,5 +1,4 @@
 add_swift_library(swiftSafariServices ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
-  SafariServices.mm
   SafariServices.swift
 
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"

stdlib/public/SDK/SafariServices/SafariServices.swift

@@ -11,11 +11,9 @@
 //===----------------------------------------------------------------------===//
 
 @_exported import SafariServices // Clang module
-
-@_silgen_name("_swift_SafariServices_isSafariServicesAvailable")
-internal func _isSafariServicesAvailable() -> Bool
+import _SwiftSafariServicesOverlayShims
 
 @available(OSX, introduced: 10.11)
 public func SFSafariServicesAvailable() -> Bool {
-  return _isSafariServicesAvailable()
+  return _swift_SafariServices_isSafariServicesAvailable()
 }

stdlib/public/SDK/SceneKit/CMakeLists.txt

@@ -1,6 +1,5 @@
 add_swift_library(swiftSceneKit ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
   SceneKit.swift.gyb
-  Thunks.mm
 
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"
   LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"

stdlib/public/SDK/SceneKit/SceneKit.swift.gyb

@@ -224,18 +224,11 @@ extension SCNBoundingVolume {
 
 // MARK: APIs refined for Swift
 
-@_silgen_name("SCN_Swift_SCNSceneSource_entryWithIdentifier")
-internal func SCN_Swift_SCNSceneSource_entryWithIdentifier(
-  _ self_: AnyObject,
-  _ uid: NSString,
-  _ entryClass: AnyObject) -> AnyObject?
-
 @available(iOS, introduced: 8.0)
 @available(OSX, introduced: 10.8)
 extension SCNSceneSource {
-  public func entryWithIdentifier<T>(_ uid: String, withClass entryClass: T.Type) -> T? {
-    return SCN_Swift_SCNSceneSource_entryWithIdentifier(
-      self, uid as NSString, entryClass as! AnyClass) as! T?
+  public func entryWithIdentifier<T: AnyObject>(_ uid: String, withClass entryClass: T.Type) -> T? {
+    return self.__entry(withIdentifier: uid, with: entryClass) as! T?
   }
 }
 

stdlib/public/SDK/XCTest/XCTest.swift

@@ -13,16 +13,14 @@
 @_exported import XCTest // Clang module
 
 import CoreGraphics
-
-/// Returns the current test case, so we can use free functions instead of methods for the overlay.
-@_silgen_name("_XCTCurrentTestCaseBridge") func _XCTCurrentTestCaseBridge() -> XCTestCase
+import _SwiftXCTestOverlayShims
 
 // --- Failure Formatting ---
 
 /// Register the failure, expected or unexpected, of the current test case.
 func _XCTRegisterFailure(_ expected: Bool, _ condition: String, _ message: @autoclosure () -> String, _ file: StaticString, _ line: UInt) -> Void {
   // Call the real _XCTFailureHandler.
-  let test = _XCTCurrentTestCaseBridge()
+  let test = _XCTCurrentTestCase()
   _XCTPreformattedFailureHandler(test, expected, file.description, line, condition, message())
 }
 
@@ -43,9 +41,6 @@ func _XCTFailureDescription(_ assertionType: _XCTAssertionType, _ formatIndex: U
 
 // --- Exception Support ---
 
-@_silgen_name("_XCTRunThrowableBlockBridge")
-func _XCTRunThrowableBlockBridge(_: @convention(block) () -> Void) -> NSDictionary
-
 /// The Swift-style result of evaluating a block which may throw an exception.
 enum _XCTThrowableBlockResult {
   case success
@@ -70,13 +65,13 @@ func _XCTRunThrowableBlock(_ block: () throws -> Void) -> _XCTThrowableBlockResu
   if let blockError = blockErrorOptional {
     return .failedWithError(error: blockError)
   } else if d.count > 0 {
-    let t: String = d["type"] as! String
+    let t: String = d["type"]!
 
     if t == "objc" {
       return .failedWithException(
-        className: d["className"] as! String,
-        name: d["name"] as! String,
-        reason: d["reason"] as! String)
+        className: d["className"]!,
+        name: d["name"]!,
+        reason: d["reason"]!)
     } else {
       return .failedWithUnknownException
     }

stdlib/public/SDK/XCTest/XCTestCaseAdditions.mm

@@ -126,36 +126,15 @@ - (NSString *)className
 @end
 
 
-// Swift's memory management expectations are different than Objective-C; it
-// expects everything to be +1 rather than +0. So we need to bridge the
-// _XCTCurrentTestCase function to return a +1 object.
-
-XCT_EXPORT XCTestCase *_XCTCurrentTestCase(void);
-
-XCT_EXPORT SWIFT_CC(swift) NS_RETURNS_RETAINED
-XCTestCase *_XCTCurrentTestCaseBridge(void);
-
-NS_RETURNS_RETAINED XCTestCase *_XCTCurrentTestCaseBridge(void)
-{
-    return [_XCTCurrentTestCase() retain];
-}
-
-
 // Since Swift doesn't natively support exceptions, but Objective-C code can
 // still throw them, use a helper to evaluate a block that may result in an
 // exception being thrown that passes back the most important information about
 // it.
 //
 // If no exception is thrown by the block, returns an empty dictionary.
-//
-// Note that this function needs Swift calling conventions, hence the use of
-// NS_RETURNS_RETAINED and Block_release. (The argument should also be marked
-// NS_RELEASES_ARGUMENT, but clang doesn't realize that a block parameter
-// should be treated as an Objective-C parameter here.)
 
-XCT_EXPORT NS_RETURNS_RETAINED NSDictionary *_XCTRunThrowableBlockBridge(void (^block)());
+XCT_EXPORT NSDictionary *_XCTRunThrowableBlockBridge(void (^block)());
 
-SWIFT_CC(swift) NS_RETURNS_RETAINED
 NSDictionary *_XCTRunThrowableBlockBridge(void (^block)())
 {
     NSDictionary *result;

stdlib/public/SDK/XPC/CMakeLists.txt

@@ -1,6 +1,5 @@
 add_swift_library(swiftXPC ${SWIFT_SDK_OVERLAY_LIBRARY_BUILD_TYPES} IS_SDK_OVERLAY
   XPC.swift
-  XPC.mm
 
   SWIFT_COMPILE_FLAGS "${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}"
   LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"