[PATCH] D100176: [VPlan] Use recursive traversal iterator in VPSlotTracker.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: gilr, Ayal, sguggill, a.elovikov, rengolin.
Herald added subscribers: tschuett, psnobl, rogfer01, bollu, hiraditya.
fhahn requested review of this revision.
Herald added a subscriber: vkmr.
Herald added a project: LLVM.

This patch simplifies VPSlotTracker by using the recursive traversal
iterator to traverse all blocks in a VPlan in reverse post-order when
numbering VPValues in a plan.

This depends on a fix to RPOT (D100169 <https://reviews.llvm.org/D100169>). It also extends the traversal
unit tests to check RPOT.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D100176

Files:
  llvm/lib/Transforms/Vectorize/VPlan.cpp
  llvm/lib/Transforms/Vectorize/VPlanValue.h
  llvm/unittests/Transforms/Vectorize/VPlanTest.cpp

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