[all-commits] [llvm/llvm-project] 311339: [DAG] SimplifyDemandedBits - ISD::AND - only reque...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 311339e25cd4d431902f93b1cbc6b67ac3fd2abf
      https://github.com/llvm/llvm-project/commit/311339e25cd4d431902f93b1cbc6b67ac3fd2abf
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-05-16 (Thu, 16 May 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/Thumb2/mve-laneinterleaving-cost.ll

  Log Message:
  -----------
  [DAG] SimplifyDemandedBits - ISD::AND - only request DemandedElts when looking for a splat constant

Limit the isConstOrConstSplat call to the vector elements we care about

Noticed while investigating regressions in #92096



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