Terrible is hyperbole. They're not state of the art, but they are pretty decent. If you are using multi-G data structures, or chasing that last 2% of performanc

Terrible is hyperbole. They're not state of the art, but they are pretty decent. If you are using multi-G data structures, or chasing that last 2% of performance, then sure, they will make a difference. But in most large applications, switching to things like that don't make much difference compared to just writing a slightly better algorithm, or compacting your data-structures a little to improve cache-hit, or re-organising your code a little to do the expensive stuff outside the loop. Source: I regularly optimise C++ code in LibreOffice.