[PATCH] D94426: [VPlan] Introduce VPExternalDef specialization for VPValue

[Satish K Guggilla via Phabricator via llvm-commits]

sguggill created this revision.
sguggill added reviewers: fhahn, hsaito, Ayal.
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The changes here introduce VPExternalDef specialization for VPValues. When constructing VPlan for a candidate loop in the native path, we now create a VPExternalDef when the corresponding underlying value is defined outside the candidate loop.

This change allows us to share the same set of VPExternalDefs in different VPlans constructed for a candidate loop. The sub-class can also be used to infer a VPValue uniformity in VPlan based divergence analysis. These changes will be posted in subsequent follow up patches.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D94426

Files:
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/lib/Transforms/Vectorize/VPlan.h
  llvm/lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
  llvm/lib/Transforms/Vectorize/VPlanValue.h
  llvm/lib/Transforms/Vectorize/VPlanVerifier.cpp
  llvm/unittests/Transforms/Vectorize/VPlanHCFGTest.cpp

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