[PATCH] D64896: Make DT a transitive dependency of LI.

[Evgenii Stepanov via Phabricator via llvm-commits]

eugenis added a comment.

This fixes http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/18689.
I've added a pass that preservesCFG; following passes use LI but not DT. Without the transitive dependency, the pass manager kills DT before my pass as there are no future users, but then calls LoopInfoWrapperPass::verify that assumes that DT is still alive.


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