[PATCH] D149479: [LV] Enable scalable outer loop vectorization

[Kolya Panchenko via Phabricator via llvm-commits]

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The changeset allows VLA outer loop vectorization as well as

- fixes incorrect handling of a loopnest during HCFG VPlan construction
- adds vec remark when outer loop was successfully vectorized


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149479

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
  llvm/test/Transforms/LoopVectorize/RISCV/outer_loop_scalable.ll
  llvm/test/Transforms/LoopVectorize/X86/outer_loop_no_scalable.ll
  llvm/test/Transforms/LoopVectorize/outer_loop_test3.ll

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