[PATCH] D50778: [LV] Vectorize loops where non-phi instructions used outside loop

[Anna Thomas via Phabricator via llvm-commits]

anna created this revision.
anna added reviewers: Ayal, mkuper, fhahn.
Herald added a subscriber: javed.absar.

Follow up change to https://reviews.llvm.org/rL339703, where we now vectorize loops with non-phi
instructions used outside the loop. Note that the cyclic dependency
identification occurs when identifying reduction/induction vars.

We also need to identify that we do not allow users where the PSCEV information
within and outside the loop are different. This was the fix added in https://reviews.llvm.org/rL307837
for PR33706.


Repository:
  rL LLVM

https://reviews.llvm.org/D50778

Files:
  lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
  test/Transforms/LoopVectorize/no_outside_user.ll

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