[PATCH] D102476: [VectorCombine] Use constant range info for index scalarization legality.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: RKSimon, spatel, nlopes, qiucf.
Herald added subscribers: arphaman, hiraditya.
fhahn requested review of this revision.
Herald added a project: LLVM.

We can only scalarize memory accesses if we know the index is valid.

This patch adjusts canScalarizeAcceess to fall back to
computeConstantRange to check if the index is known to be valid.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D102476

Files:
  llvm/lib/Transforms/Vectorize/VectorCombine.cpp
  llvm/test/Transforms/VectorCombine/AArch64/load-extractelement-scalarization.ll
  llvm/test/Transforms/VectorCombine/load-insert-store.ll

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