[all-commits] [llvm/llvm-project] b49a6b: [AArch64] Consider histcnt smaller than i32 in the...

[Sam Tebbs via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b49a6b2a9d9f02da49476865334348f480cc1d4d
      https://github.com/llvm/llvm-project/commit/b49a6b2a9d9f02da49476865334348f480cc1d4d
  Author: Sam Tebbs <samuel.tebbs at arm.com>
  Date:   2024-09-19 (Thu, 19 Sep 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
    M llvm/test/Analysis/CostModel/AArch64/sve-intrinsics.ll

  Log Message:
  -----------
  [AArch64] Consider histcnt smaller than i32 in the cost model (#108521)

This PR updates the AArch64 cost model to consider the cheaper cost of
<i32 histograms to reflect the improvements from
https://github.com/llvm/llvm-project/pull/101017 and
https://github.com/llvm/llvm-project/pull/103037

Work by Max Beck-Jones (@DevM-uk)

---------

Co-authored-by: DevM-uk <max.beck-jones at arm.com>



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