[PATCH] D89890: [Docs] Clarify that FunctionPasses can't add/remove declarations

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

How is this supposed to work practically? A huge number of functions passes want to add intrinsic declarations


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D89890/new/

https://reviews.llvm.org/D89890