matthewrobb/six — pull request #63 by nuisanceofcats (2012-10-31 00:39:15+00:00)
Title: 10% compiler speedup by reducing number of tree traversals.

This reduces the six bootstrap-compilation time for me from 5.4s to 4.8s.

I was expecting a greater speedup, but ah well.. it's over 10%.

There's probably a better way to write the code for this but it demonstrates the principle and that it works.

Let me know how you want to proceed.