From db7436aae8fc1f3cd993a2a78c4f919bb21e6599 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 18 Mar 2005 23:18:30 +0000
Subject: [PATCH] fix a bogus assertion

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20675 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/DataStructure/DataStructureAA.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Analysis/DataStructure/DataStructureAA.cpp b/lib/Analysis/DataStructure/DataStructureAA.cpp
index dcbb4ed60fb..f880b636dc1 100644
--- a/lib/Analysis/DataStructure/DataStructureAA.cpp
+++ b/lib/Analysis/DataStructure/DataStructureAA.cpp
@@ -190,7 +190,7 @@ DSAA::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
   DSScalarMap &CallerSM = CallerTDGraph.getScalarMap();
   DSScalarMap::iterator NI = CallerSM.find(P);
   if (NI == CallerSM.end()) {
-    if (isa<ConstantPointerNull>(P))
+    if (isa<ConstantPointerNull>(P) || isa<UndefValue>(P))
       Result = NoModRef;                 // null is never modified :)
     else {
       assert(isa<GlobalVariable>(P) &&