Quote:
Originally Posted by J-bo09
I read an interesting article on the 5S that states the 64 bit operating is not going to be taken advantage of, due to the backwards capatibility of all 32 bit apps.
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Currently a developer has to choose, if they only want to support iOS7 they can compile and submit a combo 32/64 bit version of their app that'll run on any iOS7 device, but not on iOS6. If they want to support previous versions of iOS they have to stay purely 32 bit.
But next month Apple will update (presumably to Xcode) so that developers can release a unified binary that'll support 32 bit or 64 bit if it's available regardless of OS version.
Unless it's something very specific, I doubt the 32->64 bit update would have a significant impact on most apps as far as performance goes, it's just so the OS can efficiently address more than 4GB of RAM. Though I guess bigger registers might make video encoding/decoding faster, so maybe a little benefit.