[PATCH] D97225: Only verify LazyCallGraph under expensive checks

[Arthur Eubanks via Phabricator via llvm-commits]

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These verify calls are causing a lot of slowdown on some files, up to 8x.
The LazyCallGraph infra has been tested a lot over the years, so I'm fairly confident that we don't always need to run the verifys.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97225

Files:
  llvm/lib/Analysis/CGSCCPassManager.cpp
  llvm/lib/Analysis/LazyCallGraph.cpp

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