[all-commits] [llvm/llvm-project] 0b4ee8: [X86] combineKSHIFT - fold kshiftr(kshiftr/extract...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0b4ee8d4ee4be78e90fd7c4dc4a8f05e6b1a091e
      https://github.com/llvm/llvm-project/commit/0b4ee8d4ee4be78e90fd7c4dc4a8f05e6b1a091e
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-12-18 (Wed, 18 Dec 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx512-bugfix-26264.ll
    M llvm/test/CodeGen/X86/avx512-masked-memop-64-32.ll
    M llvm/test/CodeGen/X86/pr33349.ll
    M llvm/test/CodeGen/X86/pr34177.ll
    M llvm/test/CodeGen/X86/vec_smulo.ll
    M llvm/test/CodeGen/X86/vec_umulo.ll
    M llvm/test/CodeGen/X86/vector-compress.ll
    M llvm/test/CodeGen/X86/vector-replicaton-i1-mask.ll

  Log Message:
  -----------
  [X86] combineKSHIFT - fold kshiftr(kshiftr/extract_subvector(X,C1),C2) --> kshiftr(X,C1+C2) (#115528)

Merge serial KSHIFTR nodes, possibly separated by EXTRACT_SUBVECTOR, to allow mask instructions to be computed in parallel.



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