[PATCH] D89952: [SelectionDAG] Fine tune CTPOP optimizations

[David Zarzycki via Phabricator via llvm-commits]

davezarzycki added a comment.

Also, this patch ought to be refined to optimize something like CTPOP(x) > 62 into CTPOP(NOT(x)) <= 2 or a chain of (x | (x + 1)) and a final comparison against a mask value instead of zero (whatever is more efficient).


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D89952/new/

https://reviews.llvm.org/D89952