Richard Diamond bd753c9315 Fix an alignment error in llvm::expandAtomicRMWToCmpXchg without breaking the build where X86 isn't enabled. ...

Summary: Divide the primitive size in bits by eight so the initial load's alignment is in bytes as expected. Tested with the included unit test.

Reviewers: rengolin, jfb

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11804

llvm-svn: 244229

2015-08-06 16:55:03 +00:00

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