[embedded] Avoid using reinterpretCast in set bridging

Author: kubamracek

stdlib/public/core/BridgeStorage.swift

@@ -179,16 +179,8 @@ internal struct _BridgeStorage<NativeClass: AnyObject> {
   @inline(__always)
   internal init(native: Native) {
     _internalInvariant(_usesNativeSwiftReferenceCounting(NativeClass.self))
-    rawValue = Builtin.reinterpretCast(native)
-  }
-
-#if _pointerBitWidth(_64)
-  @inlinable
-  @inline(__always)
-  internal init(taggedPayload: UInt) {
-    rawValue = Builtin.reinterpretCast(taggedPayload)
+    rawValue = native
   }
-#endif
 
   @inlinable
   @inline(__always)

stdlib/public/core/SetVariant.swift

@@ -36,9 +36,9 @@ extension Set {
     @inlinable
     @inline(__always)
     init(dummy: ()) {
-#if _pointerBitWidth(_64)
+#if _pointerBitWidth(_64) && !$Embedded
       self.object = _BridgeStorage(taggedPayload: 0)
-#elseif _pointerBitWidth(_32)
+#elseif _pointerBitWidth(_32) || $Embedded
       self.init(native: _NativeSet())
 #else
 #error("Unknown platform")