[all-commits] [llvm/llvm-project] 34013e: [X86] Add shuffle tests for BLEND(PERMUTE(X), PERMU...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 34013e7ce25868aa8ddea116f79184e8603af56c
      https://github.com/llvm/llvm-project/commit/34013e7ce25868aa8ddea116f79184e8603af56c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-04-16 (Tue, 16 Apr 2024)

  Changed paths:
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx.ll
    M llvm/test/CodeGen/X86/vector-shuffle-combining-avx512f.ll
    M llvm/test/CodeGen/X86/vector-shuffle-combining-sse41.ll

  Log Message:
  -----------
  [X86] Add shuffle tests for BLEND(PERMUTE(X),PERMUTE(Y)) patterns

Some very basic tests for a case where we could fold BLEND(PERMUTE(X),PERMUTE(Y)) -> PERMUTE(BLEND(X,Y))

These assume the permute masks are the same, and "complete" (no undefs/duplicate elements) but we could relax that depending on the blend mask



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