[all-commits] [llvm/llvm-project] 11c818: [AArch64] Improve index selection for histograms (...

[James Chesterman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 11c818816d0558408eb966238bd9df5f54ac5fd0
      https://github.com/llvm/llvm-project/commit/11c818816d0558408eb966238bd9df5f54ac5fd0
  Author: James Chesterman <James.Chesterman at arm.com>
  Date:   2024-10-22 (Tue, 22 Oct 2024)

  Changed paths:
    M llvm/include/llvm/CodeGen/SelectionDAGNodes.h
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/sve2-histcnt.ll

  Log Message:
  -----------
  [AArch64] Improve index selection for histograms (#111150)

Removes unnecessary extends on the indices passed into histogram instructions. It also removes the instruction when the mask is zero.



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