[PATCH] D43173: [CallSiteSplitting] Preserve DominatorTreeAnalysis.

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

Please use getAnalysisIfAvailable for the old pass manager
Please use getCachedResult for the new pass manager.

That is the correct way to "get an analysis if it is sitting around so we can update it".

The way you've done it now will actually calculate DT if it's not calculated already.


Repository:
  rL LLVM

https://reviews.llvm.org/D43173