[all-commits] [llvm/llvm-project] 497272: [X86] lowerV4F64Shuffle - prefer lowerShuffleAsDec...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4972722f90deddf45c29958070bb1beb509e72ac
      https://github.com/llvm/llvm-project/commit/4972722f90deddf45c29958070bb1beb509e72ac
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-02-09 (Sun, 09 Feb 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/copy-low-subvec-elt-to-high-subvec-elt.ll
    M llvm/test/CodeGen/X86/horizontal-sum.ll
    M llvm/test/CodeGen/X86/matrix-multiply.ll
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx.ll

  Log Message:
  -----------
  [X86] lowerV4F64Shuffle - prefer lowerShuffleAsDecomposedShuffleMerge if we're blending inplace/splatable shuffle inputs on AVX2 targets (#126420)

More aggressively use broadcast instructions where possible

Fixes #50315



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