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Commit f0b0127f authored by Haicheng Wu's avatar Haicheng Wu
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[AArch64] Set COPY ZR isAsCheapAsAMove when needed. 

If a subtarget has both ZCZeroing and CustomCheapAsMoveHandling features (now
only Kryo has both), set COPY (W|X)ZR isAsCheapAsAMove.

Differential Revision: http://reviews.llvm.org/D22360

llvm-svn: 275503
parent c29b4f07
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