Lack of autorelease optimization under ARC compiler

Question

I was just wondering, why is there no autorelease pool optimization under the ARC compiler, where it would retain an object in the innermost scope, remove it from the autoreleas

Answer 1

Why do you believe that ARC doesn't optimize the above code? Try it in Release mode under Instruments. The heap doesn't grow. If you're testing under Debug, then the problem is that you're not engaging the optimizer.