[all-commits] [llvm/llvm-project] 70e8c9: [AArch64] Bail out for scalable vecs in areExtract...

[Sjoerd Meijer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 70e8c982d0589b1a56faf0768b45596c2da3a510
      https://github.com/llvm/llvm-project/commit/70e8c982d0589b1a56faf0768b45596c2da3a510
  Author: Sjoerd Meijer <smeijer at nvidia.com>
  Date:   2024-08-21 (Wed, 21 Aug 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/Transforms/CodeGenPrepare/AArch64/sink-free-instructions.ll

  Log Message:
  -----------
  [AArch64] Bail out for scalable vecs in areExtractShuffleVectors (#105484)

The added test triggers the following assert in `areExtractShuffleVectors`
that is called from `shouldSinkOperands`:

Assertion `(!isScalable() || isZero()) && "Request for a fixed element count on a scalable object"' failed.

I don't think scalable types can be extract shuffles, so bail early if
this is the case.



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