diff --git a/llvm/lib/IR/PassManager.cpp b/llvm/lib/IR/PassManager.cpp
index 8f68bb1..47fdfed 100644
--- a/llvm/lib/IR/PassManager.cpp
+++ b/llvm/lib/IR/PassManager.cpp
@@ -91,4 +91,6 @@
 }
 }
 
+AnalysisSetKey CFGAnalyses::SetKey;
+
 AnalysisSetKey PreservedAnalyses::AllAnalysesKey;