There are some proposals of that form: basically if you have a RAM interface that can support commands like "fill this range of memory with this pattern" or "ad

There are some proposals of that form: basically if you have a RAM interface that can support commands like "fill this range of memory with this pattern" or "add this constant to all values in this range" it can help speed up a decent amount of code, but also drastically reduce power consumption, as the memory interface is a pretty significant source of power drain on mobile systems. It does significantly complicate the interfaces involved, though, so it would require a lot of effort to implement.