Reorder instructions based off of stack

[landaire]

It may be an interesting technique to re-order instructions based off of stack dependencies. So I.e. even if we cannot properly emulate some instructions to determine their value, we could look at where those dependencies are and make them adjacent. E.g. something like

LOAD_CONST 1
# Stack = [(-1, [0])]

LOAD_CONST 2
# Stack = [(-1, [0]), ("SomeModule", [1])]

LOAD_CONST 5
# Stack = [(-1, [0]), ("SomeModule", [1]), (SomeSequence, [2])]

UNPACK_SEQUENCE 2
# Stack = [(-1, [0]), ("SomeModule", [1]), (SomeSequenceValue, [2, 3]), (SomeSequenceValue, [2, 3])]

STORE_NAME 2
# Stack = [(-1, [0]), ("SomeModule", [1]), (SomeSequenceValue, [2, 3])]

STORE_NAME 3
# Stack = [(-1, [0]), ("SomeModule", [1])]

IMPORT_NAME 1

We can see that at IMPORT_NAME (index 6) the TOS is all the way at index 1. These instructions are not adjacent, although they should be! We could walk the instructions in the range [2, 5] to see if there are any dependencies on indexes 1 and 0, and if not, re-order the instructions.