diff --git a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 59a08e58b226a..49a0c88922c3e 100644
--- a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -2029,7 +2029,7 @@ struct DSEState {
     auto *InnerCallee = Malloc->getCalledFunction();
     if (!InnerCallee)
       return false;
-    LibFunc Func;
+    LibFunc Func = NotLibFunc;
     StringRef ZeroedVariantName;
     if (!TLI.getLibFunc(*InnerCallee, Func) || !TLI.has(Func) ||
         Func != LibFunc_malloc) {