#define PROFITABLE 1, you
move only instructions that are profitable -- i.e., are guaranteed
to execute once the loop body is entered.
You should also move profitable, loop-invariant instructions with
division and remainder opcodes (since those instructions would
execute anyway, it isn't a problem if they cause runtime errors).
Please include a README file in your HANDIN directory that says that you implemented this extension to the project, as well as one file called test.c that demonstrates this work by moving a different set of loop-invariant instructions when PROFITABLE is defined.