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Author SHA1 Message Date
Bill Schmidt
c98ed219d3 Fix PR15630: Replace faulty stdcx. with stwcx. 
When doing a partword atomic operation, a lwarx was being paired with
a stdcx. instead of a stwcx. when compiling for a 64-bit target.  The
target has nothing to do with it in this case; we always need a stwcx.

Thanks to Kai Nacke for reporting the problem.

llvm-svn: 178559
 2013-04-02 18:37:08 +00:00