On Thursday, 5 November 2015 at 15:45:35 UTC, Dan Olson wrote:
tvOS is essentially iOS and doesn't require bitcode (yet) like
watchOS. I am looking at adding it soon because Xcode 7 enables
it by default.
I just looked it up, their official docs say bitcode is required
for both tvOS and watchOS:
https://developer.apple.com/library/watchos/documentation/IDEs/Conceptual/AppDistributionGuide/AppThinning/AppThinning.html
I don't totally appreciate all the possible bitcode problems,
but one of the suggestions that apps can be updated for new
CPUs without rebuilding doesn't make sense. The IR/bitcode
from clang for arm64 and armv7 is different. They would have
to make all the ABIs identical first or have LLVM backend do
more of the ABI work.
Yeah, that's what google did with PNaCl, stabilize on one format
and make it as architecture-agnostic as possible:
http://www.phoronix.com/scan.php?page=news_item&px=MTQyNTE
Maybe Apple doesn't really care about running on different
architectures, but I wonder what they're doing to handle changes
in the llvm bitcode format over time.
