The C*$* limit directive sets the maximum effort KAP
will expend on optimizing a loop nest.
The value is a dial to control how much time KAP is to spend
optimizing loops; a larger number means that KAP tries to optimize
more deeply nested loop structures. The default value is 20000.
The /limit command qualifier sets this first value
globally. Setting /limit=0 turns off loop optimization,
allowing dusty-deck and other straight-line transformations only.