git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212635
91177308-0d34-0410-b5e6-
96231b3b80d8
* 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.
+
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