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Hi Reid, I'm aware of the invoke instruction and landingpad. But it's too heavy weight for control flow. It's quite expensive to take the exceptional path in C++. What I want is a more lightweight approach, to pass the return address to the callee, and let the callee jump to that address directly. -------------- next part -------------- An HTML attachment was scrubbed... URL:

.... > A custom calling convention doesn't suffice, there could be more than one alternate paths. And invoke instruction is also not general enough. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170602/9a62f335/attachment.html>