Merge pull request #68614 from kubamracek/embedded-arrays

[embedded] Avoid use of a metatype in array implementation for embedded Swift

Author: kubamracek

stdlib/public/core/ArrayShared.swift

@@ -41,9 +41,14 @@ func _allocateUninitializedArray<Element>(_  builtinCount: Builtin.Word)
   if count > 0 {
     // Doing the actual buffer allocation outside of the array.uninitialized
     // semantics function enables stack propagation of the buffer.
+    let storageType: _ContiguousArrayStorage<Element>.Type
+    #if !$Embedded
+    storageType = getContiguousArrayStorageType(for: Element.self)
+    #else
+    storageType = _ContiguousArrayStorage<Element>.self
+    #endif
     let bufferObject = Builtin.allocWithTailElems_1(
-       getContiguousArrayStorageType(for: Element.self),
-       builtinCount, Element.self)
+       storageType, builtinCount, Element.self)
 
     let (array, ptr) = Array<Element>._adoptStorage(bufferObject, count: count)
     return (array, ptr._rawValue)

stdlib/public/core/ContiguousArrayBuffer.swift

@@ -297,9 +297,14 @@ internal struct _ContiguousArrayBuffer<Element>: _ArrayBufferProtocol {
       self = _ContiguousArrayBuffer<Element>()
     }
     else {
+      let storageType: _ContiguousArrayStorage<Element>.Type
+      #if !$Embedded
+      storageType = getContiguousArrayStorageType(for: Element.self)
+      #else
+      storageType = _ContiguousArrayStorage<Element>.self
+      #endif
       _storage = Builtin.allocWithTailElems_1(
-         getContiguousArrayStorageType(for: Element.self),
-         realMinimumCapacity._builtinWordValue, Element.self)
+         storageType, realMinimumCapacity._builtinWordValue, Element.self)
 
       let storageAddr = UnsafeMutableRawPointer(Builtin.bridgeToRawPointer(_storage))
       let allocSize: Int?