[all-commits] [llvm/llvm-project] d55a3f: [VPlan] Mark histogram increment as only having it...

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d55a3fd2cec0e02d475bebba4772c1edee02aa89
      https://github.com/llvm/llvm-project/commit/d55a3fd2cec0e02d475bebba4772c1edee02aa89
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/VPlan.h
    M llvm/test/Transforms/LoopVectorize/AArch64/sve2-histcnt.ll

  Log Message:
  -----------
  [VPlan] Mark histogram increment as only having its first lane used. (#226138)

The second operand (increment ) of llvm.experimental.vector.histogram.*
is a scalar. Handle it in usesFirstLaneOnly.

PR: https://github.com/llvm/llvm-project/pull/226138



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