[PATCH] D132450: StructurizeCFG: Set Undef for non-predecessors in setPhiValues()

[Ruiling, Song via Phabricator via llvm-commits]

ruiling updated this revision to Diff 455461.
ruiling added a comment.

refine the code and add some comment.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D132450/new/

https://reviews.llvm.org/D132450

Files:
  llvm/lib/Transforms/Scalar/StructurizeCFG.cpp
  llvm/test/CodeGen/AMDGPU/multilevel-break.ll
  llvm/test/CodeGen/AMDGPU/while-break.ll
  llvm/test/Transforms/StructurizeCFG/workarounds/needs-fr-ule.ll
  llvm/test/Transforms/StructurizeCFG/workarounds/needs-unified-loop-exits.ll

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