.lispwords @ c76d55908e2e

Optimize circles a bit

After reviewing some disassembly elsewhere I realized that declaring a function
to return `(values)` and adding that form actually prevents last-call
optimization, at least in SBCL.  It's a cleaner API, but it wastes lots of stack
frames.

Save the frames, kill the `(values)`.

(2 code-push-instruction!)
(1 repeat)
(2 define-instruction define-instructions)
(1 with-database)
(3 with-cell)
(2 set-when-unbound)
(1 recursively)
(1 when-let)
(1 rule)
(0 push-logic-frame-with)