Tim Northover 15410e98d3 AArch64: remove barriers from AArch64 atomic operations.
I've managed to convince myself that AArch64's acquire/release
instructions are sufficient to guarantee C++11's required semantics,
even in the sequentially-consistent case.

llvm-svn: 179005
2013-04-08 08:40:41 +00:00
..
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