[all-commits] [llvm/llvm-project] 8352ca: [X86] combineConcatVectorOps - fold(undef, zero) ->...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8352ca0d354f7f196eb2acd76740fdff9984664c
      https://github.com/llvm/llvm-project/commit/8352ca0d354f7f196eb2acd76740fdff9984664c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2025-03-25 (Tue, 25 Mar 2025)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx512bwvl.ll

  Log Message:
  -----------
  [X86] combineConcatVectorOps - fold(undef,zero) -> zero

Concat any mixture of zero/undefs to zero (we've already handled all undefs at this point).



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