[PATCH] D63629: [JumpThreading][PR42085] Fold constant TIs before calculating LoopHeaders

[Brian Rzycki via Phabricator via llvm-commits]

brzycki added a comment.

In D63629#1557847 <https://reviews.llvm.org/D63629#1557847>, @xbolva00 wrote:

> Maybe you can use some reasonable BB size threshold to fix these regressions ?


Hello @xbolva00, I appreciate your help but I but don't quite understand how to apply your suggestion. I have to remove trivially constant `TI`s from all `BB`s before calculating `LoopHeaders` and is irrespective of the size of each `BB` or of the size of `F`. I'm curious if you meant to apply such a heuristic in `FindFunctionBackedges()`?


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