I think there is only little freedom. Floating point operations always allocate memory. Integer operations do not allocate memory as long as the result fits into 30 bit. Then memory must be allocated to store the result. Example on a LoPy:
>>> f2 = 2
>>> for _ in range(32):
... f1 *= f2
... print(_+1, end = " ")
... gc.mem_free()
...
1 37408
2 37408
3 37408
4 37408
5 37408
6 37408
7 37408
8 37408
9 37408
10 37408
11 37408
12 37408
13 37408
14 37408
15 37408
16 37408
17 37408
18 37408
19 37408
20 37408
21 37408
22 37408
23 37408
24 37408
25 37408
26 37408
27 37408
28 37408
29 37408
30 37344
31 37312
32 37280
