mozilla/rust — pull request #3807 by catamorphism (2012-10-18 21:55:01+00:00)
Title: Preliminary support for labeled break/continue for `loop`s

This patch adds preliminary middle-end support (liveness and trans)
for breaks and `loop`s to `loop` constructs that have labels.

while and for loops can't have labels yet.

Progress on #2216

r? @pcwalton