Earlier quoted context omitted.
> my PPC Mac software Rosetta was bundled with OSX for 4 years. That's for PPC mac software running on hardware which literally could not run it natively. > my 68K Mac software The Mac 68k emulator was only deprecated with the Intel transition, 68K mac software remained supported for about a decade . > How far back should Apple go supporting older platforms? Supporting software which runs natively on the hardware doe…
32 bit apps don't run natively on the new ARM chips. Heck many old apps don't run at all on iOS 10. Apple was able to reduce the size of iOS by not having 32 bit support libraries in memory. Since iOS doesn't have paging, that saved memory benefits 64 bit apps.
Which is not my issue, have you considered reading my comments? Here, let me make it easy for you:
> the problem is that you can't play phone games from 2009 on your 2013~2016 iPhone which had been able to run them right until you updated iOS.
> Apple was able to reduce the size of iOS by not having 32 bit support libraries in memory.
Is that why capacity available went down 730MB on a 7?
> Since iOS doesn't have paging, that saved memory benefits 64 bit apps.
You could already save that memory by not using 32b software. Don't use the software, the libraries don't get loaded. Furthermore given iOS will kill background applications to reclaim memory, the "saved memory" is just about non-existant.