[PATCH] D133866: [SelectionDAG] Add helper function to check whether a SDValue is neutral element. NFC.

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Please can you look at whether this is compatible with something similar we already have in foldSelectWithIdentityConstant in DAGCombiner.cpp?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D133866/new/

https://reviews.llvm.org/D133866