[PATCH] D48974: [DomTreeUpdater] Ignore updates when both DT and PDT are nullptrs

[Chijun Sima via Phabricator via llvm-commits]

NutshellySima updated this revision to Diff 155111.
NutshellySima set the repository for this revision to rL LLVM.
NutshellySima added a comment.

Amend the document.


Repository:
  rL LLVM

https://reviews.llvm.org/D48974

Files:
  include/llvm/IR/DomTreeUpdater.h
  lib/IR/DomTreeUpdater.cpp
  unittests/IR/DomTreeUpdaterTest.cpp

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