D-Programming-Language/druntime — pull request #801 by Safety0ff (2014-05-22 20:17:41+00:00)
Title: GC: Remove redundant pool searches

This is a reboot of PR 646, but with a slightly different approach.
This PR reduces the worst case times of GC extend and realloc specifically.

It replaces the size and info cache with a single pool cache.