Add some comments, and fix a few places that missed setting Changed.
authorDan Gohman <gohman@apple.com>
Fri, 13 Apr 2012 18:57:48 +0000 (18:57 +0000)
committerDan Gohman <gohman@apple.com>
Fri, 13 Apr 2012 18:57:48 +0000 (18:57 +0000)
commitd6bf201fa20a5cd3aa9f61767081d1d03d8aee3c
tree50c417c5a297910ba1ac1994819289dd5a2ffcf7
parent6c22695c6d10036f5635caec7ea84dbe84cc6bea
Add some comments, and fix a few places that missed setting Changed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154687 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/ObjCARC.cpp