Janis Common Lisp implementation is also very interesting. Moreover, it explains how to optimize CL code: http://t-b-o-g.blogspot.com/2009/10/brians-brain-on-c

Janis Common Lisp implementation is also very interesting. Moreover, it explains how to optimize CL code: http://t-b-o-g.blogspot.com/2009/10/brians-brain-on-common-lisp.html http://t-b-o-g.blogspot.com/2009/10/brians-brain-on-common-l... http://t-b-o-g.blogspot.com/2009/10/brians-brain-on-common-lisp-take-2.html http://t-b-o-g.blogspot.com/2009/10/brians-brain-on-common-l... http://t-b-o-g.blogspot.com/2009/12/brians-brain-on-common-lisp-take-3.html http://t-b-o-g.blogspot.com/2009/12/brians-brain-on-common-l...