1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/Analysis/CallGraph.h b/include/llvm/Analysis/CallGraph.h
index 089f322..fb77da7 100644
--- a/include/llvm/Analysis/CallGraph.h
+++ b/include/llvm/Analysis/CallGraph.h
@@ -259,6 +259,9 @@ public:
   /// addCalledFunction - Add a function to the list of functions called by this
   /// one.
   void addCalledFunction(CallSite CS, CallGraphNode *M) {
+    assert(!CS.getInstruction() ||
+           !CS.getCalledFunction() ||
+           !CS.getCalledFunction()->isIntrinsic());
     CalledFunctions.push_back(std::make_pair(CS.getInstruction(), M));
     M->AddRef();
   }