[all-commits] [llvm/llvm-project] bbc4c2: [DAG] SimplifyDemandedBits - ensure we have simpli...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbc4c2e047107c62d49ce1e0474635ea55a2b006
      https://github.com/llvm/llvm-project/commit/bbc4c2e047107c62d49ce1e0474635ea55a2b006
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-05-22 (Wed, 22 May 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AArch64/arm64-vhadd.ll

  Log Message:
  -----------
  [DAG] SimplifyDemandedBits - ensure we have simplified the shift operands before folding to AVG

Pulled out of #92096 - ensure we have completed a topological simplification of the SRA/SRL shift operands before we try to combine to a AVG node, as its difficult to later simplify through AVG nodes.



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