[PATCH] Add support for part-word atomics for PPC

[hfinkel at anl.gov]

REPOSITORY
  rL LLVM

================
Comment at: lib/Target/PowerPC/PPCSubtarget.h:117
@@ -116,2 +116,3 @@
   bool HasInvariantFunctionDescriptors;
+  bool HasPartwordAtomics;
 
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You need to initialize this in PPCSubtarget.cpp with the others.

http://reviews.llvm.org/D8090

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