remove unions from LLVM IR.  They are severely buggy and not
being actively maintained, improved, or extended.

llvm-svn: 112356
diff --git a/llvm/docs/ReleaseNotes.html b/llvm/docs/ReleaseNotes.html
index ebf68f8..3595735 100644
--- a/llvm/docs/ReleaseNotes.html
+++ b/llvm/docs/ReleaseNotes.html
@@ -67,9 +67,8 @@
   include/llvm/Analysis/LiveValues.h => Dan
   lib/Transforms/IPO/MergeFunctions.cpp => consider for 2.8.
   llvm/Analysis/PointerTracking.h => Edwin wants this, consider for 2.8.
-  ABCD, GEPSplitterPass
+  GEPSplitterPass
   MSIL backend?
-  lib/Transforms/Utils/SSI.cpp  -> ABCD depends on it.
 -->