[all-commits] [llvm/llvm-project] 197ead: [X86] splitVector - split concat_vectors(a, b, c, d) ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 197ead75fb7a3c57f7a41cdbcff48ef3841e3832
      https://github.com/llvm/llvm-project/commit/197ead75fb7a3c57f7a41cdbcff48ef3841e3832
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-04-01 (Tue, 01 Apr 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-interleaved-load-i8-stride-3.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-3.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-6.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-7.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i16-stride-8.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-4.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-6.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-7.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i8-stride-8.ll

  Log Message:
  -----------
  [X86] splitVector - split concat_vectors(a,b,c,d) -> concat_vectors(a,b) + concat_vectors(c,d) (#133753)

Similar to what we already for build_vectors during subvector extraction, when splitting concat_vectors nodes, attempt to create a pair of half size concat_vectors nodes to see if these can fold.



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