Implement attribute 'ns_autorelease'.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHReaderDecl.cpp b/lib/Frontend/PCHReaderDecl.cpp
index 7bcd296..059aa25 100644
--- a/lib/Frontend/PCHReaderDecl.cpp
+++ b/lib/Frontend/PCHReaderDecl.cpp
@@ -478,6 +478,7 @@
     SIMPLE_ATTR(CFOwnershipRelease);
     SIMPLE_ATTR(CFOwnershipRetain);
     SIMPLE_ATTR(CFOwnershipReturns);
+    SIMPLE_ATTR(NSOwnershipAutorelease);
     SIMPLE_ATTR(NSOwnershipRelease);
     SIMPLE_ATTR(NSOwnershipRetain);
     SIMPLE_ATTR(NSOwnershipReturns);
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 98ed063..9b14a94 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -1552,6 +1552,7 @@
     case Attr::CFOwnershipRelease:
     case Attr::CFOwnershipRetain:
     case Attr::CFOwnershipReturns:
+    case Attr::NSOwnershipAutorelease:
     case Attr::NSOwnershipRelease:
     case Attr::NSOwnershipRetain:
     case Attr::NSOwnershipReturns: