diff --git a/clang/utils/TableGen/NeonEmitter.cpp b/clang/utils/TableGen/NeonEmitter.cpp
index 56f1fdf9ef574..ca8f42eb58970 100644
--- a/clang/utils/TableGen/NeonEmitter.cpp
+++ b/clang/utils/TableGen/NeonEmitter.cpp
@@ -1055,7 +1055,8 @@ std::string Intrinsic::getMangledName(bool ForceClassS) const {
   return mangleName(Name, ForceClassS ? ClassS : LocalCK);
 }
 
-std::string Intrinsic::mangleName(std::string Name, ClassKind LocalCK) const {
+std::string Intrinsic::mangleName(const std::string &Name,
+                                  ClassKind LocalCK) const {
   std::string typeCode = getInstTypeCode(BaseType, LocalCK);
   std::string S = Name;