[PATCH] D53316: StructurizeCFG: Simplify inserted PHI nodes

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle created this revision.
nhaehnle added reviewers: arsenm, rampitec.
Herald added subscribers: wdng, jvesely.

This improves subsequent divergence analysis in some cases.

Change-Id: I5e95e7ec7fd3fa80d414d1a53a02fea23e3d67d3


Repository:
  rL LLVM

https://reviews.llvm.org/D53316

Files:
  lib/Transforms/Scalar/StructurizeCFG.cpp
  test/CodeGen/AMDGPU/multi-divergent-exit-region.ll
  test/CodeGen/AMDGPU/multilevel-break.ll
  test/CodeGen/AMDGPU/smrd.ll
  test/Transforms/StructurizeCFG/invert-constantexpr.ll
  test/Transforms/StructurizeCFG/loop-continue-phi.ll
  test/Transforms/StructurizeCFG/one-loop-multiple-backedges.ll

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