[PATCH] D52285: [SelectionDAG] replace duplicated peekThroughBitcast helper functions; NFCI

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Would we be better off keeping the separate peekThroughOneUseBitcasts helper for clarity? Still putting them both in SelectionDAG


https://reviews.llvm.org/D52285