Add a sanity check.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20195 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/DataStructure.cpp b/lib/Analysis/DataStructure/DataStructure.cpp
index c0e3ef4..98fb07d 100644
--- a/lib/Analysis/DataStructure/DataStructure.cpp
+++ b/lib/Analysis/DataStructure/DataStructure.cpp
@@ -1148,6 +1148,7 @@
assert(isa<PointerType>(Ptr->getType()) && "Ptr is not a pointer!");
const Type *Ty = cast<PointerType>(Ptr->getType())->getElementType();
DSNode *N = new DSNode(UseDeclaredType ? Ty : 0, this);
+ assert(ScalarMap[Ptr].isNull() && "Object already in this graph!");
ScalarMap[Ptr] = N;
if (GlobalValue *GV = dyn_cast<GlobalValue>(Ptr)) {