mozilla/rust — pull request #12407 by alexcrichton (2014-02-19 23:00:08+00:00)
Title: Upgrade LLVM for segmented stacks on thumb

This updates the LLVM submodule to the `rust-llvm-2014-02-19` tag which is the
old one with https://github.com/rust-lang/llvm/pull/4 cherry-picked on top.

Awesome job by @neykov for this!