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Commit 2599084a authored by Evan Cheng's avatar Evan Cheng
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isAsCheapAsMove instructions can have register src operands. Check if they are... 

isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable.
This fixes sse.expandfft and sse.stepfft.

llvm-svn: 63890
parent f80493bb
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