if you want to cheat, any 2-phase optimizer which analyses the output of post compile state and/or run state to re-optimize the next compile will take as long as you want to pause between run (a) and run (b) ...
-G
if you want to cheat, any 2-phase optimizer which analyses the output of post compile state and/or run state to re-optimize the next compile will take as long as you want to pause between run (a) and run (b) ...
-G