Update documentation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146781 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/SourceLevelDebugging.html b/docs/SourceLevelDebugging.html
index d940184..80fe5cb 100644
--- a/docs/SourceLevelDebugging.html
+++ b/docs/SourceLevelDebugging.html
@@ -574,6 +574,7 @@
   i64,      ;; Size in bits
   i64,      ;; Alignment in bits
   i64,      ;; Offset in bits
+  i32,      ;; Flags to encode attributes, e.g. private
   metadata, ;; Reference to type derived from
   metadata, ;; (optional) Name of the Objective C property assoicated with 
             ;; Objective-C an ivar