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Translating an ARM iOS App to Intel macOS Using Bitcode

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Re: Translating an ARM iOS App to Intel macOS Using Bitcode

#21
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Re: Translating an ARM iOS App to Intel macOS Using Bitcode

#22
post #7

Alternatives: 1. WebAssembly 2. A subset of LLVM-IR that's architecture independent. PNacl from Google used this across chip architectures

Neither of these would help migrate current Mac apps.

I meant, they are alternatives for Apple to consider, instead of reinventing the wheel on a cross architecture IR. Of course they won't help current Mac apps that don't have IR in those formats

Re: Translating an ARM iOS App to Intel macOS Using Bitcode

#23

Earlier quoted context omitted.

Apple, having already forced PPC->X86 and now forcing X86->X64, clearly has no difficulty forcing an architecture update every 5 years, stranding apps in the past if they don’t update. Saying that they wouldn’t force X64->ARM64 due to migration issues they have repeatedly accepted makes no sense, given their history - and especially having done so regardless of Adobe’s inability to keep up.

The intel transition was 13 years ago? And the powerpc era lasted from 1992ish to 2005?

Wikipedia may be of some use here, I don’t know the exact dates of when OS X was released (with a Mac Classic emulator, how meta!) versus when Apple transitioned 6502->68k and 68k->ppc and ppc->x86. Sorry I can’t be of more help to your questions!

Re: Translating an ARM iOS App to Intel macOS Using Bitcode

#24

Earlier quoted context omitted.

Neither of these would help migrate current Mac apps.

I meant, they are alternatives for Apple to consider, instead of reinventing the wheel on a cross architecture IR. Of course they won't help current Mac apps that don't have IR in those formats

I don’t think we really have a “cross architecture IR” yet.

Re: Translating an ARM iOS App to Intel macOS Using Bitcode

#25

Earlier quoted context omitted.

I meant, they are alternatives for Apple to consider, instead of reinventing the wheel on a cross architecture IR. Of course they won't help current Mac apps that don't have IR in those formats

I don’t think we really have a “cross architecture IR” yet.

Who's "we"? If you mean Apple, their IR (bitcode) is alomst a 100% the same as LLVM-IR, so it is not really Apple's. Aside from WebAssembly and PNacl cited in my parent comment, there's .net IR, JVM byte code, yada yada yada ..

The universe is teeming with cross architecture IRs. Eventually, LLVM will have a cross platform LLVM-IR, which will possibly be even more impactful than WebAssembly has been in it's short lifespan

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