!9856 Fixed the recheck issue for operator overflow watchpoint

From: @adelshafiei
Reviewed-by: @john_tzanakakis,@wangyue01
Signed-off-by: @wangyue01

mindspore/ccsrc/debug/debugger/debugger.cc

@@ -1051,7 +1051,15 @@ std::vector<std::string> Debugger::CheckOpOverflow() {
     }
   }
 
-  return op_names;
+  auto iter_op_names = overflow_ops_.find(num_step_);
+  if (iter_op_names == overflow_ops_.end()) {
+    overflow_ops_.insert(std::pair<uint32_t, std::vector<std::string>>(num_step_, op_names));
+
+    return op_names;
+  }
+  iter_op_names->second.insert(std::end(iter_op_names->second), std::begin(op_names), std::end(op_names));
+
+  return iter_op_names->second;
 }
 
 void Debugger::SetTrainingDone(bool training_done) { training_done_ = training_done; }

mindspore/ccsrc/debug/debugger/debugger.h

@@ -233,6 +233,7 @@ class Debugger : public std::enable_shared_from_this<Debugger> {
   bool partial_memory_;
   std::mutex access_lock_;
   std::map<std::pair<uint32_t, uint32_t>, std::string> stream_task_to_opname_;
+  std::map<uint32_t, std::vector<std::string>> overflow_ops_;
   double last_overflow_bin_;
   std::map<uint32_t, std::string> overflow_bin_path_;
   // flag to keep track of the very first suspension of debugger