Welcome to Interrupt @gdharris! Exciting to hear from more folks using clang on embedded. We had evaluated clang 5-6 years ago, but we found that it wasn’t quite as good at optimizing for code size then. Was that a concern for your use case?
Thank you for bringing up clang-tidy. I have not had the change to try it, but I will. If you’re ever inspired to write a short post about it, we’d love to publish it :-).