Ah, a kindred spirit, I too am an assembly/ISA buff. However, if you pay attention you'll notice that this article is precisely not for ISA buffs: as I've writt

Ah, a kindred spirit, I too am an assembly/ISA buff. However, if you pay attention you'll notice that this article is precisely not for ISA buffs: as I've written, I wouldn't have mentioned conditional execution if not for the debugging side effect. It is aimed at ordinary iOS developers who may be carrying assumptions from desktop architectures and not realize some ARM specificities that may impact them; I titled it "[…]things iOS developers ought to know[…]", not "hey, did you know about that cool thing?". Hence why I didn't mention free shifting (and it's the second operand that can be shaf-- er, shifted, IIRC).