From 7c1b44731ed3fe7f973c386b849fc3dd76d1cced Mon Sep 17 00:00:00 2001
From: wuyongkang <wuyongkang7@huawei.com>
Date: Thu, 16 Jul 2020 09:43:36 +0800
Subject: [PATCH] Optimization for map_data_.clear()

---
 mindspore/ccsrc/utils/ordered_map.h | 4 +++-
 mindspore/ccsrc/utils/ordered_set.h | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/mindspore/ccsrc/utils/ordered_map.h b/mindspore/ccsrc/utils/ordered_map.h
index 48aa36df31..56ae281dcf 100644
--- a/mindspore/ccsrc/utils/ordered_map.h
+++ b/mindspore/ccsrc/utils/ordered_map.h
@@ -88,7 +88,9 @@ class OrderedMap {
   }
 
   void clear() {
-    map_data_.clear();
+    if (!map_data_.empty()) {
+      map_data_.clear();
+    }
     sequential_data_.clear();
   }
 
diff --git a/mindspore/ccsrc/utils/ordered_set.h b/mindspore/ccsrc/utils/ordered_set.h
index f393ce74f2..8d2f7af15c 100644
--- a/mindspore/ccsrc/utils/ordered_set.h
+++ b/mindspore/ccsrc/utils/ordered_set.h
@@ -127,7 +127,9 @@ class OrderedSet {
 
   // Clear the elements
   void clear() {
-    mapped_data_.clear();
+    if (!mapped_data_.empty()) {
+      mapped_data_.clear();
+    }
     ordered_data_.clear();
   }