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Commit f445a67b authored by Nirav Dave's avatar Nirav Dave
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[DAGCombine] Improve Predecessor check in SimplifySelectOps. NFCI. 

Reuse search space bookkeeping across multiple predecessor checks
qdone to avoid redundancy. This should cut search cost by ~4x.

llvm-svn: 342984
parent 7373d5e6
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