hide attention lstm fuse (#13615)

Author: Superjomn

paddle/fluid/framework/ir/attention_lstm_fuse_pass.cc

@@ -257,6 +257,22 @@ std::unique_ptr<ir::Graph> AttentionLSTMFusePass::ApplyImpl(
     std::unique_ptr<ir::Graph> graph) const {
   PDPattern external_pattern, subblock_pattern;
 
+  // Use the following variables to tell whether this model is RNN1.
+  // This fuse can only works on the RNN1 model.
+  std::unordered_set<std::string> specified_vars({"data_lod_attention",
+                                                  "cell_init", "hidden_init",
+                                                  "data", "week", "minute"});
+  int count = 0;
+  for (auto* node : graph->Nodes()) {
+    if (node->IsVar() && specified_vars.count(node->Name())) {
+      ++count;
+    }
+  }
+  if (count < specified_vars.size()) {
+    return graph;
+  }
+
+  // Continue to fuse.
   FindWhileOp(graph.get());
   return graph;
 }

paddle/fluid/inference/api/paddle_inference_api.h

@@ -212,10 +212,11 @@ struct AnalysisConfig : public NativeConfig {
     kExclude   // Specify the disabled passes in `ir_passes`.
   };
 
+  // Determine whether to perform graph optimization.
   bool enable_ir_optim = true;
+  // Manually determine the IR passes to run.
   IrPassMode ir_mode{IrPassMode::kExclude};
-  // attention lstm fuse works only on some specific models, disable as default.
-  std::vector<std::string> ir_passes{"attention_lstm_fuse_pass"};
+  std::vector<std::string> ir_passes;
 
   // NOTE this is just for internal development, please not use it.
   bool _use_mkldnn{false};