Merging r323034:
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r323034 | dmgreen | 2018-01-20 11:29:37 +0100 (Sat, 20 Jan 2018) | 9 lines
[Dominators] Fix some edge cases for PostDomTree updating
These fix some odd cfg cases where batch-updating the post
dom tree fails. Usually around infinite loops and roots
ending up being different.
Differential Revision: https://reviews.llvm.org/D42247
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@323121
91177308-0d34-0410-b5e6-
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projects / llvm / commit