Indeed.

One of the hacks I needed to do to save space was by dedicating two registers to just hold the value 0 and 1.
That way I could change
```
movs r0, #0
str r0, [r3]
```
to
```
str r4, [r3]
```

This would save 2 bytes every time it needs to store a 1 or a 0 to some location!