Test: import Swift for the Copyable type

Author: kavon

test/SIL/type_lowering_unit.sil

@@ -3,6 +3,7 @@
 sil_stage raw
 
 import Builtin
+import Swift
 
 struct S : ~Copyable {}
 

test/SILOptimizer/earlycodemotion_moveonly.sil

@@ -3,6 +3,7 @@
 sil_stage canonical
 
 import Builtin
+import Swift
 
 struct FileDescriptor: ~Copyable {
   var fd: Builtin.Int64

test/SILOptimizer/instruction_deleter.sil

@@ -1,5 +1,7 @@
 // RUN: %target-sil-opt -test-runner %s -o /dev/null 2>&1 | %FileCheck %s
 
+import Swift
+
 struct MOS : ~Copyable {}
 
 sil @getMOS : $() -> (@owned MOS)

test/SILOptimizer/moveonly_addresschecker_di_interactions.sil

@@ -6,6 +6,8 @@
 
 sil_stage raw
 
+import Swift
+
 fileprivate final class _Box<T> {
   var value: _Node<T>
 

test/SILOptimizer/moveonly_temp_allocation_elim.sil

@@ -2,6 +2,8 @@
 
 sil_stage raw
 
+import Swift
+
 public class Klass {}
 
 public struct Empty : ~Copyable {}

test/SILOptimizer/sil_combine_moveonly.sil

@@ -3,6 +3,7 @@
 sil_stage canonical
 
 import Builtin
+import Swift
 
 struct S : ~Copyable {
   deinit {}