Mark all _unconditionallyBridgeFromObjectiveC functions as @_effects(readonly)

eeckstein · eeckstein · commit 6e6aae8d61c3 · 2018-10-10T08:24:26.000-07:00
This enables removal of those bridging calls for dead parameters. Read-only lets the optimizer remove such a call if the result is not used.
Note that "readonly" means: no observable write operations. It's okay to allocate and initialize new objects.

rdar://problem/44944094
diff --git a/stdlib/public/SDK/Dispatch/Data.swift b/stdlib/public/SDK/Dispatch/Data.swift
@@ -356,6 +356,7 @@ extension DispatchData {
 		return true
 	}
 
+	@_effects(readonly)
 	public static func _unconditionallyBridgeFromObjectiveC(_ source: __DispatchData?) -> DispatchData {
 		var result: DispatchData?
 		_forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/AffineTransform.swift b/stdlib/public/SDK/Foundation/AffineTransform.swift
@@ -317,6 +317,7 @@ extension AffineTransform : _ObjectiveCBridgeable {
         return true // Can't fail
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ x: NSAffineTransform?) -> AffineTransform {
         guard let src = x else { return AffineTransform.identity }
         return AffineTransform(reference: src)
diff --git a/stdlib/public/SDK/Foundation/Calendar.swift b/stdlib/public/SDK/Foundation/Calendar.swift
@@ -1113,6 +1113,7 @@ extension Calendar : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSCalendar?) -> Calendar {
         var result: Calendar?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/CharacterSet.swift b/stdlib/public/SDK/Foundation/CharacterSet.swift
@@ -782,6 +782,7 @@ extension CharacterSet : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSCharacterSet?) -> CharacterSet {
         guard let src = source else { return CharacterSet() }
         return CharacterSet(_bridged: src)
diff --git a/stdlib/public/SDK/Foundation/Data.swift b/stdlib/public/SDK/Foundation/Data.swift
@@ -1902,7 +1902,8 @@ extension Data : _ObjectiveCBridgeable {
         result = Data(referencing: input)
         return true
     }
-    
+
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSData?) -> Data {
         guard let src = source else { return Data() }
         return Data(referencing: src)
diff --git a/stdlib/public/SDK/Foundation/Date.swift b/stdlib/public/SDK/Foundation/Date.swift
@@ -257,6 +257,7 @@ extension Date : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDate?) -> Date {
         var result: Date?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/DateComponents.swift b/stdlib/public/SDK/Foundation/DateComponents.swift
@@ -338,6 +338,7 @@ extension DateComponents : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDateComponents?) -> DateComponents {
         guard let src = source else { return DateComponents() }
         return DateComponents(reference: src)
diff --git a/stdlib/public/SDK/Foundation/DateInterval.swift b/stdlib/public/SDK/Foundation/DateInterval.swift
@@ -216,6 +216,7 @@ extension DateInterval : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDateInterval?) -> DateInterval {
         var result: DateInterval?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/Decimal.swift b/stdlib/public/SDK/Foundation/Decimal.swift
@@ -487,6 +487,7 @@ extension Decimal : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDecimalNumber?) -> Decimal {
         guard let src = source else { return Decimal(_exponent: 0, _length: 0, _isNegative: 0, _isCompact: 0, _reserved: 0, _mantissa: (0, 0, 0, 0, 0, 0, 0, 0)) }
         return src.decimalValue
diff --git a/stdlib/public/SDK/Foundation/Foundation.swift b/stdlib/public/SDK/Foundation/Foundation.swift
@@ -73,6 +73,7 @@ extension AnyHashable : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: NSObject?
   ) -> AnyHashable {
diff --git a/stdlib/public/SDK/Foundation/IndexPath.swift b/stdlib/public/SDK/Foundation/IndexPath.swift
@@ -780,6 +780,7 @@ extension IndexPath : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSIndexPath?) -> IndexPath {
         guard let src = source else { return IndexPath() }
         return IndexPath(nsIndexPath: src)
diff --git a/stdlib/public/SDK/Foundation/IndexSet.swift b/stdlib/public/SDK/Foundation/IndexSet.swift
@@ -775,6 +775,7 @@ extension IndexSet : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSIndexSet?) -> IndexSet {
         guard let src = source else { return IndexSet() }
         return IndexSet(reference: src)
diff --git a/stdlib/public/SDK/Foundation/Locale.swift b/stdlib/public/SDK/Foundation/Locale.swift
@@ -466,6 +466,7 @@ extension Locale : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSLocale?) -> Locale {
         var result: Locale?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/Measurement.swift b/stdlib/public/SDK/Foundation/Measurement.swift
@@ -238,6 +238,7 @@ extension Measurement : MeasurementBridgeType {
         }
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSMeasurement?) -> Measurement {
         let u = source!.unit as! UnitType
         return Measurement(value: source!.doubleValue, unit: u)
diff --git a/stdlib/public/SDK/Foundation/NSArray.swift b/stdlib/public/SDK/Foundation/NSArray.swift
@@ -84,6 +84,7 @@ extension Array : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: NSArray?
   ) -> Array {
diff --git a/stdlib/public/SDK/Foundation/NSDictionary.swift b/stdlib/public/SDK/Foundation/NSDictionary.swift
@@ -125,6 +125,7 @@ extension Dictionary : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ d: NSDictionary?
   ) -> Dictionary {
diff --git a/stdlib/public/SDK/Foundation/NSError.swift b/stdlib/public/SDK/Foundation/NSError.swift
@@ -547,6 +547,7 @@ extension _SwiftNewtypeWrapper where Self.RawValue == Error {
   }
 
   @inlinable // FIXME(sil-serialize-all)
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: NSError?
   ) -> Self {
diff --git a/stdlib/public/SDK/Foundation/NSNumber.swift b/stdlib/public/SDK/Foundation/NSNumber.swift
@@ -46,6 +46,7 @@ extension Int8 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Int8 {
         var result: Int8?
         guard let src = source else { return Int8(0) }
@@ -87,6 +88,7 @@ extension UInt8 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> UInt8 {
         var result: UInt8?
         guard let src = source else { return UInt8(0) }
@@ -128,6 +130,7 @@ extension Int16 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Int16 {
         var result: Int16?
         guard let src = source else { return Int16(0) }
@@ -169,6 +172,7 @@ extension UInt16 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> UInt16 {
         var result: UInt16?
         guard let src = source else { return UInt16(0) }
@@ -210,6 +214,7 @@ extension Int32 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Int32 {
         var result: Int32?
         guard let src = source else { return Int32(0) }
@@ -251,6 +256,7 @@ extension UInt32 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> UInt32 {
         var result: UInt32?
         guard let src = source else { return UInt32(0) }
@@ -292,6 +298,7 @@ extension Int64 : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Int64 {
         var result: Int64?
         guard let src = source else { return Int64(0) }
@@ -332,7 +339,8 @@ extension UInt64 : _ObjectiveCBridgeable {
         result = value
         return true
     }
-    
+
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> UInt64 {
         var result: UInt64?
         guard let src = source else { return UInt64(0) }
@@ -374,6 +382,7 @@ extension Int : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Int {
         var result: Int?
         guard let src = source else { return Int(0) }
@@ -415,6 +424,7 @@ extension UInt : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> UInt {
         var result: UInt?
         guard let src = source else { return UInt(0) }
@@ -467,6 +477,7 @@ extension Float : _ObjectiveCBridgeable {
         return result != nil
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Float {
         var result: Float?
         guard let src = source else { return Float(0) }
@@ -521,6 +532,7 @@ extension Double : _ObjectiveCBridgeable {
         return result != nil
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Double {
         var result: Double?
         guard let src = source else { return Double(0) }
@@ -572,6 +584,7 @@ extension Bool : _ObjectiveCBridgeable {
         return false
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> Bool {
         var result: Bool?
         guard let src = source else { return false }
@@ -614,6 +627,7 @@ extension CGFloat : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNumber?) -> CGFloat {
         var result: CGFloat?
         guard let src = source else { return CGFloat(0) }
diff --git a/stdlib/public/SDK/Foundation/NSSet.swift b/stdlib/public/SDK/Foundation/NSSet.swift
@@ -111,6 +111,7 @@ extension Set : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(_ s: NSSet?) -> Set {
     // `nil` has historically been used as a stand-in for an empty
     // set; map it to an empty set.
diff --git a/stdlib/public/SDK/Foundation/Notification.swift b/stdlib/public/SDK/Foundation/Notification.swift
@@ -120,6 +120,7 @@ extension Notification : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSNotification?) -> Notification {
         guard let src = source else { return Notification(name: Notification.Name("")) }
         return Notification(name: src.name, object: src.object, userInfo: src.userInfo)
diff --git a/stdlib/public/SDK/Foundation/PersonNameComponents.swift b/stdlib/public/SDK/Foundation/PersonNameComponents.swift
@@ -129,6 +129,7 @@ extension PersonNameComponents : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSPersonNameComponents?) -> PersonNameComponents {
         var result: PersonNameComponents?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/String.swift b/stdlib/public/SDK/Foundation/String.swift
@@ -50,6 +50,7 @@ extension String : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: NSString?
   ) -> String {
@@ -82,6 +83,7 @@ extension Substring : _ObjectiveCBridgeable {
     return result != nil
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: NSString?
   ) -> Substring {
diff --git a/stdlib/public/SDK/Foundation/TimeZone.swift b/stdlib/public/SDK/Foundation/TimeZone.swift
@@ -262,6 +262,7 @@ extension TimeZone : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSTimeZone?) -> TimeZone {
         var result: TimeZone?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/URL.swift b/stdlib/public/SDK/Foundation/URL.swift
@@ -1205,6 +1205,7 @@ extension URL : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSURL?) -> URL {
         var result: URL?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/URLComponents.swift b/stdlib/public/SDK/Foundation/URLComponents.swift
@@ -372,6 +372,7 @@ extension URLComponents : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSURLComponents?) -> URLComponents {
         guard let src = source else { return URLComponents() }
         return URLComponents(reference: src)
@@ -465,6 +466,7 @@ extension URLQueryItem : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSURLQueryItem?) -> URLQueryItem {
         var result: URLQueryItem?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/URLRequest.swift b/stdlib/public/SDK/Foundation/URLRequest.swift
@@ -286,6 +286,7 @@ extension URLRequest : _ObjectiveCBridgeable {
         return true
     }
     
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSURLRequest?) -> URLRequest {
         var result: URLRequest?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Foundation/UUID.swift b/stdlib/public/SDK/Foundation/UUID.swift
@@ -148,6 +148,7 @@ extension UUID : _ObjectiveCBridgeable {
         return true
     }
 
+    @_effects(readonly)
     public static func _unconditionallyBridgeFromObjectiveC(_ source: NSUUID?) -> UUID {
         var result: UUID?
         _forceBridgeFromObjectiveC(source!, result: &result)
diff --git a/stdlib/public/SDK/Intents/INShortcut.swift b/stdlib/public/SDK/Intents/INShortcut.swift
@@ -113,6 +113,7 @@ extension INShortcut : _ObjectiveCBridgeable {
     return true
   }
 
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(_ source: INShortcutReference?) -> INShortcut {
     guard let src = source else { fatalError("Missing source") }
     return INShortcut(from: src)
diff --git a/stdlib/public/core/BridgeObjectiveC.swift b/stdlib/public/core/BridgeObjectiveC.swift
@@ -78,6 +78,7 @@ public protocol _ObjectiveCBridgeable {
   /// implementation of `Swift.Array`'s conformance to
   /// `_ObjectiveCBridgeable` will produce an empty array rather than
   /// dynamically failing.
+  @_effects(readonly)
   static func _unconditionallyBridgeFromObjectiveC(_ source: _ObjectiveCType?)
       -> Self
 }
@@ -133,6 +134,7 @@ public struct _BridgeableMetatype: _ObjectiveCBridgeable {
   }
 
   @inlinable // FIXME(sil-serialize-all)
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(_ source: AnyObject?)
       -> _BridgeableMetatype {
     var result: _BridgeableMetatype?
diff --git a/stdlib/public/core/NewtypeWrapper.swift b/stdlib/public/core/NewtypeWrapper.swift
@@ -133,6 +133,7 @@ extension _SwiftNewtypeWrapper where Self.RawValue : _ObjectiveCBridgeable {
   }
 
   @inlinable // FIXME(sil-serialize-all)
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: Self.RawValue._ObjectiveCType?
   ) -> Self {
@@ -165,6 +166,7 @@ extension _SwiftNewtypeWrapper where Self.RawValue: AnyObject {
   }
 
   @inlinable // FIXME(sil-serialize-all)
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(
     _ source: Self.RawValue?
   ) -> Self {
diff --git a/stdlib/public/core/Optional.swift b/stdlib/public/core/Optional.swift
@@ -727,6 +727,7 @@ extension Optional : _ObjectiveCBridgeable {
   }
 
   @inlinable // FIXME(sil-serialize-all)
+  @_effects(readonly)
   public static func _unconditionallyBridgeFromObjectiveC(_ source: AnyObject?)
       -> Optional<Wrapped> {
     if let nonnullSource = source {
diff --git a/test/SILOptimizer/dead_bridging_code.swift b/test/SILOptimizer/dead_bridging_code.swift

Original file line number	Diff line number	Diff line change
`@@ -356,6 +356,7 @@ extension DispatchData {`
`356`	`356`	`return true`
`357`	`357`	`}`
`358`	`358`
	`359`	`+ @_effects(readonly)`
`359`	`360`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: __DispatchData?) -> DispatchData {`
`360`	`361`	`var result: DispatchData?`
`361`	`362`	`_forceBridgeFromObjectiveC(source!, result: &result)`
Original file line number	Diff line number	Diff line change
`@@ -317,6 +317,7 @@ extension AffineTransform : _ObjectiveCBridgeable {`
`317`	`317`	`return true // Can't fail`
`318`	`318`	`}`
`319`	`319`
	`320`	`+ @_effects(readonly)`
`320`	`321`	`public static func _unconditionallyBridgeFromObjectiveC(_ x: NSAffineTransform?) -> AffineTransform {`
`321`	`322`	`guard let src = x else { return AffineTransform.identity }`
`322`	`323`	`return AffineTransform(reference: src)`
Original file line number	Diff line number	Diff line change
`@@ -1113,6 +1113,7 @@ extension Calendar : _ObjectiveCBridgeable {`
`1113`	`1113`	`return true`
`1114`	`1114`	`}`
`1115`	`1115`
	`1116`	`+ @_effects(readonly)`
`1116`	`1117`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSCalendar?) -> Calendar {`
`1117`	`1118`	`var result: Calendar?`
`1118`	`1119`	`_forceBridgeFromObjectiveC(source!, result: &result)`
Original file line number	Diff line number	Diff line change
`@@ -782,6 +782,7 @@ extension CharacterSet : _ObjectiveCBridgeable {`
`782`	`782`	`return true`
`783`	`783`	`}`
`784`	`784`
	`785`	`+ @_effects(readonly)`
`785`	`786`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSCharacterSet?) -> CharacterSet {`
`786`	`787`	`guard let src = source else { return CharacterSet() }`
`787`	`788`	`return CharacterSet(_bridged: src)`
Original file line number	Diff line number	Diff line change
`@@ -257,6 +257,7 @@ extension Date : _ObjectiveCBridgeable {`
`257`	`257`	`return true`
`258`	`258`	`}`
`259`	`259`
	`260`	`+ @_effects(readonly)`
`260`	`261`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDate?) -> Date {`
`261`	`262`	`var result: Date?`
`262`	`263`	`_forceBridgeFromObjectiveC(source!, result: &result)`
Original file line number	Diff line number	Diff line change
`@@ -338,6 +338,7 @@ extension DateComponents : _ObjectiveCBridgeable {`
`338`	`338`	`return true`
`339`	`339`	`}`
`340`	`340`
	`341`	`+ @_effects(readonly)`
`341`	`342`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDateComponents?) -> DateComponents {`
`342`	`343`	`guard let src = source else { return DateComponents() }`
`343`	`344`	`return DateComponents(reference: src)`
Original file line number	Diff line number	Diff line change
`@@ -216,6 +216,7 @@ extension DateInterval : _ObjectiveCBridgeable {`
`216`	`216`	`return true`
`217`	`217`	`}`
`218`	`218`
	`219`	`+ @_effects(readonly)`
`219`	`220`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDateInterval?) -> DateInterval {`
`220`	`221`	`var result: DateInterval?`
`221`	`222`	`_forceBridgeFromObjectiveC(source!, result: &result)`
Original file line number	Diff line number	Diff line change
`@@ -487,6 +487,7 @@ extension Decimal : _ObjectiveCBridgeable {`
`487`	`487`	`return true`
`488`	`488`	`}`
`489`	`489`
	`490`	`+ @_effects(readonly)`
`490`	`491`	`public static func _unconditionallyBridgeFromObjectiveC(_ source: NSDecimalNumber?) -> Decimal {`
`491`	`492`	`guard let src = source else { return Decimal(_exponent: 0, _length: 0, _isNegative: 0, _isCompact: 0, _reserved: 0, _mantissa: (0, 0, 0, 0, 0, 0, 0, 0)) }`
`492`	`493`	`return src.decimalValue`
Original file line number	Diff line number	Diff line change
`@@ -73,6 +73,7 @@ extension AnyHashable : _ObjectiveCBridgeable {`
`73`	`73`	`return result != nil`
`74`	`74`	`}`
`75`	`75`
	`76`	`+ @_effects(readonly)`
`76`	`77`	`public static func _unconditionallyBridgeFromObjectiveC(`
`77`	`78`	`_ source: NSObject?`
`78`	`79`	`) -> AnyHashable {`