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Commit ae382bb6 authored by Sanjay Patel's avatar Sanjay Patel
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[DAG] add splat vector support for 'xor' in SimplifyDemandedBits 

This allows forming more 'not' ops, so we get improvements for ISAs that have and-not.

Follow-up to:
https://reviews.llvm.org/rL300725

llvm-svn: 300763
parent ada0888a
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