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Update ReleaseNotes to mention Atomic NAND semantic changes.
author
Cameron McInally
<cameron.mcinally@nyu.edu>
Wed, 9 Jul 2014 18:29:55 +0000
(18:29 +0000)
committer
Cameron McInally
<cameron.mcinally@nyu.edu>
Wed, 9 Jul 2014 18:29:55 +0000
(18:29 +0000)
llvm-svn: 212635
llvm/docs/ReleaseNotes.rst
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a/llvm/docs/ReleaseNotes.rst
b/llvm/docs/ReleaseNotes.rst
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--- a/
llvm/docs/ReleaseNotes.rst
+++ b/
llvm/docs/ReleaseNotes.rst
@@
-59,6
+59,10
@@
Non-comprehensive list of changes in this release
* 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