[all-commits] [llvm/llvm-project] 696805: [AArch64] Improve non-SVE popcount for 32bit and 6...

[Tim Gymnich via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 696805d1330491c3228c0221c4458d33a6c4bfac
      https://github.com/llvm/llvm-project/commit/696805d1330491c3228c0221c4458d33a6c4bfac
  Author: Tim Gymnich <tgymnich at icloud.com>
  Date:   2024-07-02 (Tue, 02 Jul 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/popcount.ll

  Log Message:
  -----------
  [AArch64] Improve non-SVE popcount for 32bit and 64 bit using udot (#95881)

fixes #95860

Use `udot` instead of a sequence of `uaddlp` instructions when summing
up lanes for `popcount`.



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