I'm curious how that works. LLVM bitcode backwards/forwards compatibility is quite poor, from what I've heard. Will they fix some bitcode version to transmit, and have translators on the client/server sides? Have a bunch of different toolchain versions on the server side? Force everyone to resubmit with a newer version if they want to do any changes on the server side?
Presumably the backwards/forwards compatibility is poor simply because people don't tend to have these files sitting around, they mostly exist (at the moment) as part of a compilation framework and are tempfiles.
If needed, it wouldn't be too for someone with a few programmers (Apple could spare a few!) to write the proper versioning to upgrade/downgrade the file format as LLVM changes?
