In an attempt to reduce confusion, mark 'Strong compare exchange' as done, since

we generate correct code for both strong and weak atomic compare-exchanges, even
though we don't propagate to the IR enough information to generate optimal weak
compare-exchanges on architectures which support them.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155161 91177308-0d34-0410-b5e6-96231b3b80d8

www/cxx_status.html

@@ -308,7 +308,7 @@ C++11 mode.</p>
     <tr>
       <td>Strong Compare and Exchange</td>
       <td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2748.html">N2748</a></td>
-      <td class="none" align="center">No</td>
+      <td class="svn" align="center">SVN</td>
     </tr>
     <tr>
       <td>Bidirectional Fences</td>