tree 6668c036eb8f9f133c2f98795381722a97b2728d
parent 841714214ed276c9a69c471b6c85f6388e8db970
author Chris Lattner <sabre@nondot.org> 1079133175 +0000
committer Chris Lattner <sabre@nondot.org> 1079133175 +0000

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