Do not apply the ARC move optimization to 'const'-qualified xvalues.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133861 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenObjCXX/arc-move.mm b/test/CodeGenObjCXX/arc-move.mm
index 87011a6..70469e6 100644
--- a/test/CodeGenObjCXX/arc-move.mm
+++ b/test/CodeGenObjCXX/arc-move.mm
@@ -61,3 +61,15 @@
   // CHECK-NEXT: call void @objc_release(i8* [[OBJ]])
   // CHECK-NEXT: ret void
 }
+
+// CHECK: define void @_Z10const_moveRKU8__strongP11objc_object(
+void const_move(const __strong id &x) {
+  // CHECK:      [[Y:%.*]] = alloca i8*,
+  // CHECK:      [[X:%.*]] = call i8** @_Z4moveIRKU8__strongP11objc_objectEON16remove_referenceIT_E4typeEOS5_(
+  // CHECK-NEXT: [[T0:%.*]] = load i8** [[X]]
+  // CHECK-NEXT: [[T1:%.*]] = call i8* @objc_retain(i8* [[T0]])
+  // CHECK-NEXT: store i8* [[T1]], i8** [[Y]]
+  // CHECK-NEXT: [[T0:%.*]] = load i8** [[Y]]
+  // CHECK-NEXT: call void @objc_release(i8* [[T0]])
+  id y = move(x);
+}