[PATCH] D53355: Introducing VPPHINode

[Nikolay Panchenko via Phabricator via llvm-commits]

npanchen created this revision.
npanchen added reviewers: rengolin, fhahn, hsaito, dcaballe, sguggill.
Herald added subscribers: llvm-commits, rogfer01, bollu.

[VPlan] Added VPPHINode class that is constructed and used to represent phi-nodes.

Detailed description: 
Current representation of phi-nodes in VPlan completely depends on underlying IR, which means that any VPlan xform has to generate PHINode instruction that contradicts to VPlan's philosophy "Don't generate any IR instruction before decision is taken."

In this patch VPPHINode is constructed for phi-nodes and underlying IR is still used in CG.
In a next patch CG will be fixed so that it will not use underlying IR.


Repository:
  rL LLVM

https://reviews.llvm.org/D53355

Files:
  lib/Transforms/Vectorize/LoopVectorizationPlanner.h
  lib/Transforms/Vectorize/VPlan.cpp
  lib/Transforms/Vectorize/VPlan.h
  lib/Transforms/Vectorize/VPlanHCFGBuilder.cpp
  unittests/Transforms/Vectorize/VPlanHCFGTest.cpp

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