[PATCH] D49982: [TailCallElim] Preserve DT and PDT

[Chijun Sima via Phabricator via llvm-commits]

NutshellySima updated this revision to Diff 158804.
NutshellySima added a comment.

Add the comment to point out the reason why we recalculate the DominatorTree.


https://reviews.llvm.org/D49982

Files:
  include/llvm/Transforms/Utils/BasicBlockUtils.h
  lib/Transforms/Scalar/TailRecursionElimination.cpp
  lib/Transforms/Utils/BasicBlockUtils.cpp
  test/Transforms/TailCallElim/2010-06-26-MultipleReturnValues.ll
  test/Transforms/TailCallElim/EraseBB.ll
  test/Transforms/TailCallElim/accum_recursion.ll
  test/Transforms/TailCallElim/ackermann.ll
  test/Transforms/TailCallElim/basic.ll
  test/Transforms/TailCallElim/deopt-bundle.ll
  test/Transforms/TailCallElim/dont_reorder_load.ll
  test/Transforms/TailCallElim/dup_tail.ll
  test/Transforms/TailCallElim/inf-recursion.ll
  test/Transforms/TailCallElim/notail.ll
  test/Transforms/TailCallElim/opt-remarks-recursion.ll
  test/Transforms/TailCallElim/reorder_load.ll
  test/Transforms/TailCallElim/setjmp.ll

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