diff --git a/llvm/include/llvm/DebugInfo/CodeView/TypeHashing.h b/llvm/include/llvm/DebugInfo/CodeView/TypeHashing.h
index e92ec4855b252..453b38e0c11e3 100644
--- a/llvm/include/llvm/DebugInfo/CodeView/TypeHashing.h
+++ b/llvm/include/llvm/DebugInfo/CodeView/TypeHashing.h
@@ -212,8 +212,8 @@ template <> struct DenseMapInfo<codeview::GloballyHashedType> {
     return *reinterpret_cast<const unsigned *>(Val.Hash.data());
   }
 
-  static bool isEqual(codeview::GloballyHashedType LHS,
-                      codeview::GloballyHashedType RHS) {
+  static bool isEqual(const codeview::GloballyHashedType &LHS,
+                      const codeview::GloballyHashedType &RHS) {
     return LHS == RHS;
   }
 };