[PATCH] D145221: [X86] Prefer `vpternlog` instead of `blendv` for `vselect` on masks.

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n updated this revision to Diff 502256.
goldstein.w.n added a comment.

Use `ComputeNumSignBits` instead of `PCMPGT` check. Fix comment


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145221/new/

https://reviews.llvm.org/D145221

Files:
  llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
  llvm/test/CodeGen/X86/abds-vector-128.ll
  llvm/test/CodeGen/X86/abds-vector-256.ll
  llvm/test/CodeGen/X86/abdu-vector-128.ll
  llvm/test/CodeGen/X86/abdu-vector-256.ll
  llvm/test/CodeGen/X86/avx512-gfni-intrinsics.ll
  llvm/test/CodeGen/X86/var-permute-256.ll
  llvm/test/CodeGen/X86/vector-shuffle-v1.ll
  llvm/test/CodeGen/X86/vselect-avx.ll
  llvm/test/CodeGen/X86/vselect-pcmp.ll

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