[PATCH] D43293: [SimplifyCFG] Don't remove preheaders when we need canonical loops.

[Dave Green via Phabricator via llvm-commits]

dmgreen updated this revision to Diff 134454.
dmgreen added a comment.

Updated to simplify if condition.


https://reviews.llvm.org/D43293

Files:
  include/llvm/Transforms/Utils/Local.h
  lib/Transforms/Scalar/SimplifyCFGPass.cpp
  lib/Transforms/Utils/SimplifyCFG.cpp
  test/Transforms/LoopUnswitch/2015-06-17-Metadata.ll
  test/Transforms/LoopUnswitch/infinite-loop.ll
  test/Transforms/SimplifyCFG/UncondBranchToHeader.ll

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