[all-commits] [llvm/llvm-project] 5d9217: [X86] combineConcatVectorOps - convert X86ISD::HAD...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5d921710c0d6984950f74ba57192aed9c67a84f3
      https://github.com/llvm/llvm-project/commit/5d921710c0d6984950f74ba57192aed9c67a84f3
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-03-10 (Mon, 10 Mar 2025)

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

  Log Message:
  -----------
  [X86] combineConcatVectorOps - convert X86ISD::HADD/SUB concatenation to use combineConcatVectorOps recursion (#130579)

Only concatenate X86ISD::HADD/SUB nodes if at least one operand is beneficial to concatenate



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