Computing in the theoretical sense, right? I've always heard the opposite of this claim: Lisp abstracts away how computation is done on actual hardware. Isn't that what the famous Alan Perlis quote was referring to?
Specifically, ANSI Common Lisp is equipped with a function called DISASSEMBLE, and on many implementations it will provide you not only with plain assembly dump, but also with comments regarding said assembly, for example a comment specifying "we're calling X here", "this is handler for single parameter, and this is for multiple parameters" (in case of optional arguments to function)