From 267a1b02a2e0143c2b4bac11253f32fb1bf6fa7d Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 27 Mar 2005 18:58:23 +0000
Subject: [PATCH] teach andersens about undef

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20881 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/IPA/Andersens.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index 12d4cf5d4cd..12efb46c373 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -481,7 +481,7 @@ void Andersens::IdentifyObjects(Module &M) {
 Andersens::Node *Andersens::getNodeForConstantPointer(Constant *C) {
   assert(isa<PointerType>(C->getType()) && "Not a constant pointer!");
 
-  if (isa<ConstantPointerNull>(C))
+  if (isa<ConstantPointerNull>(C) || isa<UndefValue>(C))
     return &GraphNodes[NullPtr];
   else if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
     return getNode(GV);