Add a note about GCC 3.3.2 optimization bug that causes llc to spin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14250 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 9d199c8..b160b67 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -651,7 +651,13 @@
<div class="doc_text">
<ul>
-<li>None so far.
+ <li>Optimized (Release) versions of LLVM built with GCC 3.3.2 or 3.3.3 will
+ produce an llc tool that always enters an infinite loop due to what
+ appears to be an optimization bug (-O2 and -O3) in those versions of GCC.
+ This problem does not happen in GCC 3.3.1 nor GCC 3.4.0 nor does it happen if
+ you build a Debug version of LLVM. You are cautioned not to use GCC 3.3.2 or
+ GCC 3.3.3 to build Optimized versions of LLVM. It is unclear whether this problem
+ affects other backends but it is unlikely.</li>
</ul>
</div>