[PATCH] D110235: [LoopVectorize] Support reductions that store intermediary result

[Igor Kirillov via Phabricator via llvm-commits]

igor.kirillov updated this revision to Diff 405949.
igor.kirillov marked 2 inline comments as done.
igor.kirillov added a comment.

Add fix that prevents vectorization for the case when not a final reduction value stored in a loop invariant address.
Add test for this case.
Remove some unused code and rename a couple of IR variables in the `reduction-with-invariant-store.ll` test.
Fix incorrect phi node in `reduc_store_inside_unrolled` and `reduc_double_invariant_store` tests.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110235/new/

https://reviews.llvm.org/D110235

Files:
  llvm/include/llvm/Analysis/IVDescriptors.h
  llvm/include/llvm/Analysis/LoopAccessAnalysis.h
  llvm/include/llvm/Transforms/Vectorize/LoopVectorizationLegality.h
  llvm/lib/Analysis/IVDescriptors.cpp
  llvm/lib/Analysis/LoopAccessAnalysis.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorizationLegality.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/scalable-reductions.ll
  llvm/test/Transforms/LoopVectorize/reduction-with-invariant-store.ll
  llvm/test/Transforms/LoopVectorize/vplan-printing.ll

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