Correctly tag padding instructions

python/dune/perftool/sumfact/sumfact.py

@@ -174,7 +174,7 @@ def generate_accumulation_instruction(visitor, accterm, measure, subdomain_id):
                         expression=0,
                         forced_iname_deps=frozenset(quadrature_inames() + visitor.inames),
                         forced_iname_deps_is_final=True,
-                        tags=frozenset(["quadvec"])
+                        tags=frozenset(["quadvec", "gradvec"])
                         )
 
         # Replace gradient iname with correct index for assignement