[PATCH] D157484: [VPlan] Support scalable vectors in outer-loop vectorization

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iamlouk created this revision.
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This patch enables scalable vectors in the VPlan-native path.
If a vectorization factor is specified via loop vectorization hints,
that factor is used. If no vectorization factor is specified, but the
target preferes scalable vectorization, a scalable vectorization factor
is selected.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157484

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/outer_loop_prefer_scalable.ll
  llvm/test/Transforms/LoopVectorize/outer_loop_scalable.ll

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