iojs/io.js — pull request #130 by bnoordhuis (2014-12-09 20:34:45+00:00)
Title: lib: optimize require() path walking

Remove a speed bump from commit 36777d2 by reusing the result of the
previous stat() system call. It's a code path that gets called many
thousands of times at startup in most applications so shaving off an
extra system call can have an appreciable impact on startup times.

R=@chrisdickinson @robertkowalski