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32e8528c33
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Author SHA1 Message Date
Robert Lytton
32e8528c33 Add XCore support for ATOMIC_FENCE. 
ATOMIC_FENCE is lowered to a compiler barrier which is codegen only. There
is no need to emit an instructions since the XCore provides sequential
consistency.

Original patch by Richard Osborne

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194464 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-12 10:11:26 +00:00