Rainer Brockerhoff

I think bitcode is a huge win. About only thing I’ll miss is cool ISA-specific instructions. Now reliant on OS vendor providing access.

@rentzsch are they disallowing ISA-specific intrinsics? They're definitely representable in bitcode…

@kongtomorrow I was assuming so. I probably shouldn’t.

@rentzsch I need to watch the sessions… biggest wins I could think of were (1) AOT LTO with snapshots of system libraries, (2) microarchs.

@rentzsch you can inline code from the frameworks if you can guarantee a (partial) recompile every time the OS frameworks change.

@kongtomorrow @rentzsch I don’t see how bitcode helps there, tbh, unless the OS install process grows a “recompile installed apps” step

@catfish_man @rentzsch was thinking they could do it in on app store servers, once, and redeliver the "thinned" binaries to all upgraders.