Chris Lattner f9e69b4553 Fix a couple of minor problems. Because PHI nodes can use themselves, this ... could cause infinite loops. Also, getUnderlyingObject can return null llvm-svn: 12351		2004-03-12 23:12:55 +00:00
llvm	Fix a couple of minor problems. Because PHI nodes can use themselves, this	2004-03-12 23:12:55 +00:00