Zufolek has update his tool which can be used to free more space in your games (codewise).

According to cd-w it does the following:

1.Merges multiple loads of the same value into a single load
2.Removes unnecessary compares with zero
3.Removes store followed immediately by load
4.Removes unnecessary consecutive loads and stores
5.Removes unused code (between a jmp and a label)
6.Removes unnecessary zero initialisation
7.Removes unused loads
8.Converts subroutines into jmps
9.Converts load/tax into lax
10.Converts and/tax into lxa
11.Converts sequences of short jumps into a single jump

Release notes:

I’ve fixed some problems in Squeeze so it should work with more games, and I’ve added a simple uninstaller. I’ve fixed a syntax error when calling the modified 2600bas.bat with only -O option. (My bad.)

I’ve disabled the LXA optimization since that apparently fails (at least in emus) for whatever reason.