[all-commits] [llvm/llvm-project] 61aab8: [X86] getFauxShuffleMask - insert_subvector - skip...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 61aab82135db3e5e69a660f395c2008e812b8946
      https://github.com/llvm/llvm-project/commit/61aab82135db3e5e69a660f395c2008e812b8946
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-02-27 (Thu, 27 Feb 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx-insertelt.ll
    M llvm/test/CodeGen/X86/avx512-insert-extract.ll
    M llvm/test/CodeGen/X86/vector-interleaved-load-i32-stride-6.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i32-stride-7.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i64-stride-5.ll
    M llvm/test/CodeGen/X86/vector-interleaved-store-i64-stride-7.ll
    M llvm/test/CodeGen/X86/vector-pack-512.ll
    M llvm/test/CodeGen/X86/zero_extend_vector_inreg_of_broadcast.ll
    M llvm/test/CodeGen/X86/zero_extend_vector_inreg_of_broadcast_from_memory.ll

  Log Message:
  -----------
  [X86] getFauxShuffleMask - insert_subvector - skip undemanded subvectors (#129042)

If the shuffle combine doesn't require the subvector of a insert_subvector node, we can just combine the base vector directly.



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