Affect of program size on memory usage

I've taken some pride in reducing static storage by moving variables to
local subprocedures, which also makes the code more readable too. However,
I often see the size of the program itself grow by much more than the
storage reduction. I use DBGVIEW(*LIST), so I'm fairly certain that as I
add more source lines, my program object grows quickly in size. SQL also
takes a toll as it adds access path information when the program is first
executed.

My question is, does the system i load the whole program object into
memory, or is their some intelligence there? If so, is there a way to
compare the real program object size, minus the source view?