Using dyn_cast_or_null here is redundant, use dyn_cast instead.
treefdbe3c2f3175462c78da3fa82e5832accb3edf34
drwxr-xr-x - Driver
drwxr-xr-x - INPUTS
-rw-r--r-- 2744 LICENSE.TXT
-rw-r--r-- 197 Makefile
-rw-r--r-- 96 ModuleInfo.txt
-rw-r--r-- 6232 NOTES.txt
-rw-r--r-- 9047 README.txt
-rw-r--r-- 1076 TODO.txt
drwxr-xr-x - clang.xcodeproj
drwxr-xr-x - docs
drwxr-xr-x - include
drwxr-xr-x - lib
drwxr-xr-x - test
drwxr-xr-x - tools
drwxr-xr-x - utils
drwxr-xr-x - win32
drwxr-xr-x - www