[PATCH] D76944: [GVN] Fix VNCoercion/BasicAA for Scalable Vector.

[Huihui Zhang via Phabricator via llvm-commits]

huihuiz created this revision.
huihuiz added reviewers: sdesmalen, efriedma, spatel, fhahn, reames, apazos.
huihuiz added a project: LLVM.
Herald added subscribers: jfb, hiraditya.

For VNCoercion, skip scalable vector when analysis rely on fixed size,
otherwise call TypeSize::getFixedSize() explicitly.

For BasicAAResult, do not decompose gep expression if gep does not have
constant offset.

Add unit tests to check funtionality of GVN load elimination for scalable vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D76944

Files:
  llvm/lib/Analysis/BasicAliasAnalysis.cpp
  llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
  llvm/lib/Transforms/Utils/VNCoercion.cpp
  llvm/test/Transforms/GVN/vscale.ll

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