> it is rather similar to the cost of a function call. It literally is a function call, most of the time. And yeah, thumb-2 was the preferred encoding for 32b

> it is rather similar to the cost of a function call. It literally is a function call, most of the time. And yeah, thumb-2 was the preferred encoding for 32b iOS and Android, and the only supported encoding for Windows phone, so it was used on billions of devices.