[PATCH] D113291: [AggressiveInstCombine] Lower Table Based CTTZ

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I don't think I have much further to say.  Emitting a table lookup from TargetLowering::expandCTTZ should be straightforward, I think.  See DAGCombiner::convertSelectOfFPConstantsToLoadOffset for an example of how to emit a constant table.


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https://reviews.llvm.org/D113291