[PATCH] D105473: [LV] Ignore candidate VFs with invalid costs.

[Sander de Smalen via Phabricator via llvm-commits]

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This follows on from discussion on the mailing-list:

  https://lists.llvm.org/pipermail/llvm-dev/2021-June/151047.html

to interpret an Invalid cost as 'infinitely expensive', as this
simplifies some of the legalization issues with scalable vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D105473

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/scalable-call.ll

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