Make CreateProgramDesc more robust (#31543)

paddle/fluid/imperative/jit/program_desc_tracer.cc

@@ -69,6 +69,7 @@ UniqueBlockVarGenerator::UniqueBlockVarGenerator(
 
 std::string UniqueBlockVarGenerator::NameOf(const std::weak_ptr<VarBase> &var,
                                             const std::string &prefix) {
+  VLOG(3) << "Finding: " << var.lock()->Name();
   auto all_vars_iter = all_vars_.find(var);
   PADDLE_ENFORCE_EQ(all_vars_iter != all_vars_.end(), true,
                     platform::errors::NotFound(
@@ -111,6 +112,15 @@ void UniqueBlockVarGenerator::InsertNewVarInBlock(
   }
 }
 
+bool ProgramDescTracer::ContainVar(const std::weak_ptr<VarBase> &var) const {
+  auto vars_iter = vars_.find(var);
+  bool ret = (vars_iter != vars_.end());
+  if (!ret) {
+    VLOG(5) << "Can't found variable: " << var.lock()->Name();
+  }
+  return ret;
+}
+
 void ProgramDescTracer::InsertOp(const std::string &type,
                                  const NameVarBaseMap &inputs,
                                  const NameVarBaseMap &outputs,
@@ -147,13 +157,17 @@ TracedProgramTuple ProgramDescTracer::CreateProgramDesc(
 
   std::vector<std::string> feed_var_names;
   for (auto &feed_var : feed_vars) {
+    if (ContainVar(feed_var)) {
       feed_var_names.emplace_back(generator.NameOf(feed_var, feed_prefix));
     }
+  }
 
   std::vector<std::string> fetch_var_names;
   for (auto &fetch_var : fetch_vars) {
+    if (ContainVar(fetch_var)) {
       fetch_var_names.emplace_back(generator.NameOf(fetch_var, fetch_prefix));
     }
+  }
 
   for (auto &op : ops_) {
     auto *op_desc = block->AppendOp();
@@ -164,8 +178,10 @@ TracedProgramTuple ProgramDescTracer::CreateProgramDesc(
       std::vector<std::string> names;
       names.reserve(pair.second.size());
       for (auto &var : pair.second) {
+        if (ContainVar(var)) {
           names.emplace_back(generator.NameOf(var, tmp_prefix));
         }
+      }
 
       op_desc->SetInput(pair.first, std::move(names));
     }
@@ -174,8 +190,10 @@ TracedProgramTuple ProgramDescTracer::CreateProgramDesc(
       std::vector<std::string> names;
       names.reserve(pair.second.size());
       for (auto &var : pair.second) {
+        if (ContainVar(var)) {
           names.emplace_back(generator.NameOf(var, tmp_prefix));
         }
+      }
 
       op_desc->SetOutput(pair.first, std::move(names));
     }

paddle/fluid/imperative/jit/program_desc_tracer.h

@@ -66,7 +66,7 @@ class ProgramDescTracer {
       const std::string &feed_prefix,
       const std::vector<std::shared_ptr<VarBase>> &fetch_vars,
       const std::string &fetch_prefix, const std::string &tmp_prefix) const;
-
+  bool ContainVar(const std::weak_ptr<VarBase> &var) const;
   void Reset();
 
  private: