[llvm] r212635 - Update ReleaseNotes to mention Atomic NAND semantic changes.

[Cameron McInally]

Author: mcinally
Date: Wed Jul  9 13:29:55 2014
New Revision: 212635

URL: http://llvm.org/viewvc/llvm-project?rev=212635&view=rev
Log:
Update ReleaseNotes to mention Atomic NAND semantic changes.

Modified:
    llvm/trunk/docs/ReleaseNotes.rst

Modified: llvm/trunk/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/ReleaseNotes.rst?rev=212635&r1=212634&r2=212635&view=diff
==============================================================================
--- llvm/trunk/docs/ReleaseNotes.rst (original)
+++ llvm/trunk/docs/ReleaseNotes.rst Wed Jul  9 13:29:55 2014
@@ -59,6 +59,10 @@ Non-comprehensive list of changes in thi
 * The prefix for loop vectorizer hint metadata has been changed from
   ``llvm.vectorizer`` to ``llvm.loop.vectorize``.
 
+* Some backends previously implemented Atomic NAND(x,y) as ``x & ~y``. Now 
+  all backends implement it as ``~(x & y)``, matching the semantics of GCC 4.4
+  and later.
+
 .. NOTE
    For small 1-3 sentence descriptions, just add an entry at the end of
    this list. If your description won't fit comfortably in one bullet