[PATCH] D21916: Add LiveRegUnits class.

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

In the interest of not having this lying around uncommitted for much longer, I am committing this without the RegisterScavenging parts (the RegisterScavenging rewrite this was based on caused build failures).


Repository:
  rL LLVM

https://reviews.llvm.org/D21916