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ARM paired GPR COPY was being lowered to two MOVr without CC. This patch puts the CC back. My test is a reduction of the case where I encountered the issue, 64-bit atomics use paired GPRs. The issue only occurs with selectionDAG, FastISel doesn't encounter it so I didn't bother calling it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186226 91177308-0d34-0410-b5e6-96231b3b80d8
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