[all-commits] [llvm/llvm-project] 83fbe6: [X86] combineX86ShufflesRecursively - iteratively ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 83fbe6798605c7b1ebec1287f90a41949cb1d235
      https://github.com/llvm/llvm-project/commit/83fbe6798605c7b1ebec1287f90a41949cb1d235
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-04-08 (Tue, 08 Apr 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/any_extend_vector_inreg_of_broadcast.ll
    M llvm/test/CodeGen/X86/vector-interleaved-load-i16-stride-3.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-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-shuffle-256-v32.ll
    M llvm/test/CodeGen/X86/x86-interleaved-access.ll

  Log Message:
  -----------
  [X86] combineX86ShufflesRecursively - iteratively peek through bitcasts to free subvector widening/narrowing sources. (#134701)

Generalizes the existing code to repeatedly peek though mixed bitcast/insert_subvector/extract_subvector chains to find the source of the shuffle operand.



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