Sorry to sound sarcastic - but what you need is a compiler - it converts 'c' into assembler!

You haven't stated what your code uses too much of - is it code space or is it ram space - I expect it is ram as I can see you've got a lot of variables declared as 'long'. If you wrote the code in assembly the same way ,it to would use a lot of ram. You need to reorganise your code so that you don't have as many variables declared as 'long' - I think this may address your problem.

Have a look at the linker map file - that will tell you what is consuming the memory -be it code or ram. The tool you require is inside your head - it is much smarter than the lowly compiler - you need to help the compiler achieve your requirements.