[PATCH] D32582: [InstCombine] Add range metadata to cttz/ctlz/ctpop intrinsic calls based on known bits

[Craig Topper via Phabricator via llvm-commits]

craig.topper added a comment.

I lifted the scalar restriction on the existing code over the weekend.

I'm having trouble getting range metadata to work with vectors. One piece of code said "Range types must match instruction type!", but computeKnownBitsFromRangeMetadata assumes metadata is scalar. I haven't found any examples of vector range metadata so I don't know what the right answer is.


https://reviews.llvm.org/D32582