Fix a couple of minor problems. Because PHI nodes can use themselves, this
authorChris Lattner <sabre@nondot.org>
Fri, 12 Mar 2004 23:12:55 +0000 (23:12 +0000)
committerChris Lattner <sabre@nondot.org>
Fri, 12 Mar 2004 23:12:55 +0000 (23:12 +0000)
commit7a82ba0510aece59f59fe988ab273c3542b4d559
tree6668c036eb8f9f133c2f98795381722a97b2728d
parent841714214ed276c9a69c471b6c85f6388e8db970
Fix a couple of minor problems.  Because PHI nodes can use themselves, this
could cause infinite loops.  Also, getUnderlyingObject can return null

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12351 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/BasicAliasAnalysis.cpp