[all-commits] [llvm/llvm-project] fa9e1a: [AArch64] Expand llvm.histogram intrinsic to suppo...

[RonDahan101 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fa9e1a1515549124dd76ddc55a8a532795d51fae
      https://github.com/llvm/llvm-project/commit/fa9e1a1515549124dd76ddc55a8a532795d51fae
  Author: RonDahan101 <166982786+RonDahan101 at users.noreply.github.com>
  Date:   2025-06-11 (Wed, 11 Jun 2025)

  Changed paths:
    M llvm/docs/LangRef.rst
    M llvm/include/llvm/IR/Intrinsics.td
    M llvm/lib/Transforms/Scalar/ScalarizeMaskedMemIntrin.cpp
    M llvm/test/CodeGen/AArch64/neon-scalarize-histogram.ll

  Log Message:
  -----------
  [AArch64] Expand llvm.histogram intrinsic to support umax, umin, and uadd.sat operations (#138447)

This patch extends the llvm.histogram intrinsic to support additional
update operations beyond the existing add. Specifically, the new
supported operations are:

* umax: unsigned maximum

* umin: unsigned minimum

* uadd.sat: unsigned saturated addition

Based on the discussion from:


https://discourse.llvm.org/t/rfc-expanding-the-experimental-histogram-intrinsic/84673



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