[all-commits] [llvm/llvm-project] 3ab95e: [AArch64] Scalarize v2f16 vecreduce.fadd (#147783)

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3ab95e434428661f16c3c4bb416e7f97f926fa50
      https://github.com/llvm/llvm-project/commit/3ab95e434428661f16c3c4bb416e7f97f926fa50
  Author: David Green <david.green at arm.com>
  Date:   2025-07-11 (Fri, 11 Jul 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/vecreduce-fadd.ll

  Log Message:
  -----------
  [AArch64] Scalarize v2f16 vecreduce.fadd (#147783)

This adds a custom lowering for v2f16 vecreduce.fadd to scalarize as
opposed to padding with zeroes. This allows it to generate the more
efficient faddp. Helps with #147583.



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