Include more information when printing phi nodes.
Include more information when printing phi nodes.

Still a bit cryptic, but people interested in phi nodes should know what they're doing... ;-)
Review URL: http://codereview.chromium.org/7824004

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@9110 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh