[all-commits] [llvm/llvm-project] 03cc50: [X86] lowerShuffleAsSplitOrBlend - prefer splittin...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 03cc50fd7db734b62783b26e6c6fcfb4f7e33be0
      https://github.com/llvm/llvm-project/commit/03cc50fd7db734b62783b26e6c6fcfb4f7e33be0
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-05-22 (Thu, 22 May 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/matrix-multiply.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-3.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-6.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-7.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-8.ll
    M llvm/test/CodeGen/X86/zero_extend_vector_inreg.ll

  Log Message:
  -----------
  [X86] lowerShuffleAsSplitOrBlend - prefer splitting AVX1-only shuffles if the operands can be freely split (#141055)

On an AVX1-only target, if both operands of a 256-bit shuffle can be freely split (concatenations or splats), then prefer to lower as 128-bit shuffles using splitAndLowerShuffle



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