Add two ARM known problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36958 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index c7e55af3defee5f4ad43897b74b80bd3ea239ee7..4937d0eab02b4136e377cdeb616206f6e24035aa 100644 (file)
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -66,7 +66,7 @@ ways from our previous releases:</p>
 <li>We took this as an opportunity to
 break backwards compatibility with the LLVM 1.x bytecode and .ll file format.
 If you have LLVM 1.9 .ll files that you would like to upgrade to LLVM 2.x, we 
-recommend the use of the stand alone <a href=#llvm-upgrade">llvm-upgrade</a>
+recommend the use of the stand alone <a href=#llvm-upgrade>llvm-upgrade</a>
 tool.  We intend to keep compatibility with .ll and .bc formats within the 2.x
 release series, like we did within the 1.x series.</li>
 <li>There are several significant change to the LLVM IR and internal APIs, such
@@ -344,8 +344,11 @@ programs.</li>
 <div class="doc_text">
 
 <ul>
-<li>The ARM backend is currently in early development stages, it is not 
-ready for production use.</li>
+<li>The Thumb mode works only on ARMv6 or higher processors. On sub-ARMv6
+processors, any thumb program compiled with LLVM crashes or produces wrong
+results. (<a href="http://llvm.org/PR1388">PR1388</a>)</li>
+<li>Compilation for ARM Linux OABI (old ABI) is supported, but not fully tested.
+</li>
 </ul>
 
 </div>