diff --git a/clang/lib/AST/ODRHash.cpp b/clang/lib/AST/ODRHash.cpp
--- a/clang/lib/AST/ODRHash.cpp
+++ b/clang/lib/AST/ODRHash.cpp
@@ -889,9 +889,6 @@
   void VisitFunctionType(const FunctionType *T) {
     AddQualType(T->getReturnType());
     T->getExtInfo().Profile(ID);
-    Hash.AddBoolean(T->isConst());
-    Hash.AddBoolean(T->isVolatile());
-    Hash.AddBoolean(T->isRestrict());
     VisitType(T);
   }
 
@@ -904,6 +901,9 @@
     for (auto ParamType : T->getParamTypes())
       AddQualType(ParamType);
 
+    Hash.AddBoolean(T->isConst());
+    Hash.AddBoolean(T->isVolatile());
+    Hash.AddBoolean(T->isRestrict());
     VisitFunctionType(T);
   }