Add a dose of reality into the release notes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12510 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index c0ff975..1b8eb15 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -602,7 +602,7 @@
 <div class="doc_text">
 
 <ul>
-<li>None so far.
+<li>There are several programs in the LLVM testsuite that the Sparc code generator is known to miscompile.</li>
 </ul>
 
 </div>