[PATCH] D58874: [DAGCombiner] fold (add (add (xor a, -1), b), 1) -> (sub b, a)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Please can you rebase after rL355699 <https://reviews.llvm.org/rL355699> ?


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  rL LLVM

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  https://reviews.llvm.org/D58874/new/

https://reviews.llvm.org/D58874