   }
 
   /// Add an element to the buffer, which must have remaining capacity.
-  @inlinable // FIXME(sil-serialize-all)
+  @inlinable
   @inline(__always) // For performance reasons.
   internal mutating func addWithExistingCapacity(_ element: Element) {
     _sanityCheck(remainingCapacity > 0,

}

// The class that implements the storage for a ContiguousArray<Element>
@_fixed_layout // FIXME(sil-serialize-all)
@usableFromInline
internal final class _ContiguousArrayStorage<
  Element
> : __ContiguousArrayStorageBase {

  @inlinable // FIXME(sil-serialize-all)
  deinit {
    _elementPointer.deinitialize(count: countAndCapacity.count)
    _fixLifetime(self)


  /// Initialize the buffer with an initial size of `initialCapacity`
  /// elements.
  @inlinable
  @inline(__always) // For performance reasons.
  internal init(initialCapacity: Int) {
    if initialCapacity == 0 {
