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Commit f422c5d8 authored by Sanjay Patel's avatar Sanjay Patel
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[InstCombine] fold select-of-zero-or-ones with negated op 

(X u< 2) ? -X : -1 --> sext (X != 0)
(X u> 1) ? -1 : -X --> sext (X != 0)

https://alive2.llvm.org/ce/z/U3y5Bb
https://alive2.llvm.org/ce/z/hgi-4p

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