skip mkldnn related pass when use_mkldnn=false

test=develop

paddle/fluid/inference/analysis/analyzer.cc

@@ -113,7 +113,9 @@ void Analyzer::Run(Argument* argument) {
   passes.push_back("infer_clean_graph_pass");
   passes.push_back("graph_viz_pass");  // add graphviz for debug.
   for (auto& pass : ir_passes_) {
-    if (!disabled_ir_passes_.count(pass)) {
+    // skip mkldnn pass when use_mkldnn_ = false;
+    bool skip_pass = (!use_mkldnn_) && pass.find("mkldnn") != std::string::npos;
+    if (!disabled_ir_passes_.count(pass) && !skip_pass) {
       passes.push_back(pass);
       passes.push_back("graph_viz_pass");  // add graphviz for debug.
     }