[PATCH] D29687: [TargetLowering] check for sign-bit comparisons in SimplifyDemandedBits

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 87663.
spatel added a comment.

Patch updated:
No code changes, but added a RUN for avx512vl in https://reviews.llvm.org/rL294462 to show that variant.
I think the first test shows a missed opportunity for avx512vl and avx512f; not sure about the rest.


https://reviews.llvm.org/D29687

Files:
  lib/CodeGen/SelectionDAG/TargetLowering.cpp
  test/CodeGen/X86/vselect-pcmp.ll

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