diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index 6ef160b..c5cf3ff 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -406,6 +406,8 @@
 /// information for the function F.
 bool DISubprogram::describes(const Function *F) {
   assert(F && "Invalid function");
+  if (F == getFunction())
+    return true;
   StringRef Name = getLinkageName();
   if (Name.empty())
     Name = getName();