diff --git a/paddle/fluid/framework/ir/conv_elementwise_add_mkldnn_fuse_pass.cc b/paddle/fluid/framework/ir/conv_elementwise_add_mkldnn_fuse_pass.cc
index f96db7e89bbbe28f354c95e65da59a15cc88658b..b2c0fd63d04062fd5def2ebf79330c30a495daf0 100644
--- a/paddle/fluid/framework/ir/conv_elementwise_add_mkldnn_fuse_pass.cc
+++ b/paddle/fluid/framework/ir/conv_elementwise_add_mkldnn_fuse_pass.cc
@@ -22,112 +22,13 @@ namespace framework {
 namespace ir {
 namespace patterns {
 
-/*
-struct Pattern : public PatternBase {
-  Pattern(PDPattern* pattern, const std::string& name_scope)
-      : PatternBase{pattern, name_scope, ""} {}
-
- private:
-  std::string name_scope() { return name_scope_; }
-  std::string repr() { return repr_; }
-  size_t id() { return id_; }
-  PDPattern* node_pattern() { return pattern; }
-
- public:
-  std::string node_name(std::string op_name) {
-    return PDNodeName(name_scope(), repr(), id(), op_name);
-  }
-
-  PDNode* retrieve_node(std::string op_name) {
-    return node_pattern()->RetrieveNode(node_name(op_name));
-  }
-
-  PDNode* new_node(std::string op_name) {
-    return node_pattern()->NewNode(node_name(op_name));
-  }
-};
-*/
-/*
-struct Conv {
-  std::string op_name() const { return "conv2d"; }
-  std::string input_name() const { return "Input"; }
-  std::string bias_name() const { return "Bias"; }
-  std::string filter_name() const { return "Filter"; }
-  std::string residual_data_name() const { return "ResidualData"; }
-  std::string output_name() const { return "Output"; }
-
-  std::function<PDNode*()> operator()(std::shared_ptr<Pattern> pattern) {
-    return [&]() -> PDNode* {
-      auto conv_op = pattern->new_node(op_name())->assert_is_op(op_name());
-
-      auto input_var = pattern->new_node(input_name())
-                           ->assert_is_op_input(op_name(), input_name());
-
-      auto bias_var = pattern->new_node(bias_name())
-                          ->assert_is_op_input(op_name(), bias_name());
-
-      auto filter_var = pattern->new_node(filter_name())
-                            ->assert_is_op_input(op_name(), filter_name());
-
-      auto output_var = pattern->new_node(output_name())
-                            ->assert_is_op_output(op_name(), output_name());
-
-      conv_op->LinksFrom({input_var, bias_var, filter_var});
-      conv_op->LinksTo({output_var});
-
-      return output_var;
-    };
-  }
-};
-
-struct ElementwiseAdd {
-  std::string op_name() const { return "elementwise_add"; }
-  std::string x_name() const { return "X"; }
-  std::string y_name() const { return "Y"; }
-  std::string out_name() const { return "Out"; }
-
-  std::function<PDNode*(PDNode*)> operator()(std::shared_ptr<Pattern> pattern) {
-    return [&](PDNode* conv_output) -> PDNode* {
-      auto elementwise_add_op =
-          pattern->new_node(op_name())->assert_is_op(op_name());
-
-      auto x_var =
-          pattern->new_node(x_name())->assert_is_op_input(op_name(), x_name());
-
-      conv_output->assert_is_op_input(op_name(), y_name());
-
-      auto out_var = pattern->new_node(out_name())
-                         ->AsOutput()
-                         ->assert_is_op_output(op_name(), out_name());
-
-      elementwise_add_op->LinksFrom({x_var, conv_output});
-      elementwise_add_op->LinksTo({out_var});
-
-      return out_var;
-    };
-  }
-};
-*/
-/*
-Node* GetNodeFromSubgraph(const GraphPatternDetector::subgraph_t& subgraph,
-                          std::shared_ptr<patterns::Pattern> pattern,
-                          const std::string& op_name) {
-  PADDLE_ENFORCE(subgraph.count(pattern->retrieve_node(op_name)),
-                 "Node not found for PDNode %s", pattern->node_name(op_name));
-  Node* var = subgraph.at(pattern->retrieve_node(op_name));
-  PADDLE_ENFORCE(var, "node %s not exists in the sub-graph");
-
-  return var;
-}
-*/
-
-void LinkNodes(Node* from, Node* to) {
+static void LinkNodes(Node* from, Node* to) {
   from->outputs.push_back(to);
   to->inputs.push_back(from);
 }
 
 template <typename IT, typename FindFunc, typename ReplaceFunc>
-void ReplaceAllOccurances(IT s, IT e, FindFunc f, ReplaceFunc r) {
+static void ReplaceAllOccurances(IT s, IT e, FindFunc f, ReplaceFunc r) {
   if (s == e) return;
 
   auto it = std::find_if(s, e, f);
@@ -140,7 +41,7 @@ void ReplaceAllOccurances(IT s, IT e, FindFunc f, ReplaceFunc r) {
   ReplaceAllOccurances(it, e, f, r);
 }
 
-void CorrectGraphEdges(Graph* graph, Node* from, Node* to) {
+static void CorrectGraphEdges(Graph* graph, Node* from, Node* to) {
   for (auto& node : GraphTraits::DFS(*graph)) {
     auto same = std::find_if(std::begin(node.inputs), std::end(node.inputs),
                              [from](Node* n) { return n == from; });