[PATCH] D109927: [WIP][TLI] SimplifyDemandedVectorElts(): for `OR`, don't demand elements that are known to be all-ones in another operand

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added a reviewer: RKSimon.
Herald added subscribers: pengfei, hiraditya.
lebedev.ri requested review of this revision.
Herald added a project: LLVM.

This is a suggestion from https://reviews.llvm.org/D109726#3004107, although it does not work.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D109927

Files:
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/test/CodeGen/X86/insertelement-ones.ll
  llvm/test/CodeGen/X86/vshift-6.ll

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