tree 1449dba3d3a97a380575317087a5e5805796455b
parent bff44407e8f371298df3d31dd076a231039a7912
author Chris Lattner <sabre@nondot.org> 1118972753 +0000
committer Chris Lattner <sabre@nondot.org> 1118972753 +0000

Don't crash on:  X = phi (X, X).

This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22232 91177308-0d34-0410-b5e6-96231b3b80d8