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...ptionHandling(...) will go away in 3.1, one should upgrade their pre 3.0 exception handling code to the 3.0 system as soon as possible. The new system is more concise, and therefore cleaner, as it merges in the old llvm::Intrinsic::eh_selector, and llvm::Intrinsic::eh_exception intrinsics into one landpad instruction. Also I'm not sure if use of UpgradeExceptionHandling(...) is an approved approach so depending on it may be at one's own expense. As I found the implementation of the UpgradeExceptionHandling(...) to be pretty cool, I thought I would take the time to advertise this discovered...