[PATCH] D106536: [LoopVectorize] Fix crash for predicated instruction with scalable VF

[Caroline via Phabricator via llvm-commits]

CarolineConcatto created this revision.
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This patch avoids computing discounts for predicated instructions  when the
VF is scalable.
There is no support for vectorization of loops with division because the
vectorizer cannot guarantee that zero divisions will not happen.

This loop now does not use VF scalable

  for (long long i = 0; i < n; i++)
      if (cond[i])
        a[i] /= b[i];


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106536

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

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