I know many LLVM Meetups have been cancelled due to safety concerns regarding COVID-19. The LLVM Foundation has a monthly subscription to a platform called Remo which can help you host a virtual meetup.
If you attended the virtual LLVM Developers’ Meetings coffee breaks, then this is the platform we used. It has a lot of great features but some limitations as well (which we hope it will evolve over time). If you are interested in giving it a try for your virtual LLVM Meetup, please contact me via email and I can set up an event for you.
If you are interested in learning more about what it might look like, check out this video that was filmed to explain the coffee breaks at the virtual LLVM Dev Mtg: https://youtu.be/JuMO6VJ7A0Q