[PATCH] D134152: [SimplifyCFG][TranformUtils]Do not simplify away a trivial basic block if both this block and at least one of its predecessors are loop latches.

[Mingming Liu via Phabricator via llvm-commits]

mingmingl updated this revision to Diff 462213.
mingmingl added a reviewer: efriedma.
mingmingl added a comment.

Add efriedma@ who has context on two related patch (https://reviews.llvm.org/D42691 and https://reviews.llvm.org/D35411)

p.s. 'test1' CHECK statements in 'preserve-llvm-loop-metadata.ll' is inadvertently removed. add them back.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D134152/new/

https://reviews.llvm.org/D134152

Files:
  llvm/include/llvm/Transforms/Utils/Local.h
  llvm/lib/Transforms/Utils/Local.cpp
  llvm/test/Transforms/SimplifyCFG/preserve-llvm-loop-metadata.ll

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