[PATCH] D147260: [Loads] Support SCEVAddExpr as start for pointer AddRec.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: anna, reames, gilr, rengolin.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
fhahn requested review of this revision.
Herald added a subscriber: pcwang-thead.
Herald added a project: LLVM.

Extend handling to support `%base + offset` as start for AddRecs in
isDereferenceableAndAlignedInLoop. This is done by adjusting AccessSize
by the offset and effectively checking if the full object starting from
%base to %base + offset + access-size is dereferenceable.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147260

Files:
  llvm/lib/Analysis/Loads.cpp
  llvm/test/Transforms/LoopVectorize/X86/load-deref-pred.ll
  llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll

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