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Commit 95865e51 authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAG] SimplifyDemandedBits - if we're only demanding the signbit, a SMIN/SMAX... 

[DAG] SimplifyDemandedBits - if we're only demanding the signbit, a SMIN/SMAX node can be simplified to a OR/AND node respectively.

Alive2: https://alive2.llvm.org/ce/z/MehvFB

REAPPLIED from 54d663d5 with fix for using the correct DemandedBits mask.
parent ca10a6ca
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