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That makes way more sense, thank you so much! >From your description it sounds like you were assuming that “D1”, rather > than “D0B”, is the original block “D”. In the source, “D1” is “BodyBlock” > and “D”/”D0”/”D0B” are “Target” (and “D0A” is “DirectSucc”). > I’d guess that the “easy cases” remark corresponds to bailing out on EH > pads. Yeah I could see how exception handling branches are a challenge, but wouldn't this also break if the critical edge is one of 2+ incoming i...

Hello all! (I apologize if I've ended up in the wrong list!) I'm trying to get a better understanding of LLVM's critical edge splitting, as documented in `Transforms/Utils/BasicBlockUtils.h`; specifically in the case of critical edges which are indirect transfer. The code comments discuss the following example: a CFG with direct edges A->D, B->D, and an indirect critical edge