Since I've not found a better name for this sort of thing, I call this a waterfall optimization, when it's not only removing tailcalls, but you let the PC keep going and hitting the next routine, and then the next.

"Don't repeat yourself" (DRY) is a principle of software development aimed at reducing repetition of software patterns, replacing it with abstractions or using data normalization to avoid redundancy.

this trampoline is just a pit