Marc:

I took the gcbench.sch file from Clinger, changed

(let-class (((make-empty-node) (make-vector 4 0))

to (let-class (((make-empty-node) (vector 0 0 0 0))

and the run time went from

(time (gc-benchmark)) 4834 ms real time 4679 ms cpu time (4619 user, 60 system) 38 collections accounting for 1519 ms real time (1465 user, 9 system) 1247819792 bytes allocated 22074 minor faults no major faults

to

(time (gc-benchmark)) 3110 ms real time 2981 ms cpu time (2902 user, 79 system) 57 collections accounting for 1443 ms real time (1374 user, 16 system) 1247692592 bytes allocated 17367 minor faults no major faults

on a 64-bit gambc40b13 on Opteron.

This should be done by the compiler.

Brad