NextPrevUpTopContentsIndex Optimized and unoptimized INT32 code

When optimized correctly, the intermediate sys:int32 objects are not constructed.

In unoptimized code, sequences of operations like

( sys:int32+ ( sys:int32- a b) (sys:int32- c d))

will generate intermediate sys:int32 objects for the results of the subtraction, but the compiler can optimize these away because it knows that the function sys:int32+ consumes sys:int32 objects.

Note: the INT32 API is not designed to optimize sys:int32 objects passed as arguments.

LispWorks User Guide - 11 Mar 2008