[all-commits] [llvm/llvm-project] 05443a: [X86] isHorizontalBinOp - always create HADD/SUB i...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 05443aded7b2fa43af01bc0cfab024277855ca30
      https://github.com/llvm/llvm-project/commit/05443aded7b2fa43af01bc0cfab024277855ca30
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-05-28 (Tue, 28 May 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/haddsub-undef.ll

  Log Message:
  -----------
  [X86] isHorizontalBinOp - always create HADD/SUB if it will be merged with another existing HADD/SUB

Fixes some more cases from #34072 where undemanded vector elements prevent HADD/SUB being matched on slow targets



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