3 ms·
There is already the ARM "big.LITTLE" architecture which pairs fast high-power cores with slow low-power ones on the same die. In the future I could imagine th
by bodyfour 13y ago
There is already the ARM "big.LITTLE" architecture which pairs fast high-power cores with slow low-power ones on the same die. In the future I could imagine that extended so that a subset of cores are 64-bit only.
As others mentioned, though, I don't think Apple will need to do that since they've got a closed ecosystem. They can just declare one day that they won't accept App Store submissions that don't include a 64-bit version and very quickly move the entire universe of iOS software. There will be some no-longer maintained apps that aren't updated but they can just say "Sorry, this app doesn't support iOS 8"
There are also binary-translation techniques like what they did with Rosetta in the PowerPC->Intel transition. This wouldn't need to be done on the phone; they could just do the translation once on the app-store side.