Removed redundant std::string -> string conversions.

PiperOrigin-RevId: 211487989

4 files changed, 11 insertions, 12 deletions

diff --git a/tensorflow/tools/graph_transforms/freeze_requantization_ranges.cc b/tensorflow/tools/graph_transforms/freeze_requantization_ranges.cc
index c8dc2a7c4d..d97496cbeb 100644
--- a/tensorflow/tools/graph_transforms/freeze_requantization_ranges.cc
+++ b/tensorflow/tools/graph_transforms/freeze_requantization_ranges.cc
@@ -92,7 +92,7 @@ Status ExtractMinMaxRecords(const string& log_file_name,
     if (!str_util::EndsWith(name_string, print_suffix)) {
       continue;
     }
-    string name = std::string(
+    string name(
         name_string.substr(0, name_string.size() - print_suffix.size()));
     records->push_back({name, min, max});
   }
diff --git a/tensorflow/tools/graph_transforms/sparsify_gather_test.cc b/tensorflow/tools/graph_transforms/sparsify_gather_test.cc
index dd95779a1f..b8d6ba00de 100644
--- a/tensorflow/tools/graph_transforms/sparsify_gather_test.cc
+++ b/tensorflow/tools/graph_transforms/sparsify_gather_test.cc
@@ -42,8 +42,8 @@ class SparsifyGatherTest : public ::testing::Test {
                       const std::vector<NodeDef*>& inputs, GraphDef* graph_def,
                       bool control_dep = false) {
     NodeDef* node_def = graph_def->add_node();
-    node_def->set_name(std::string(name));
-    node_def->set_op(std::string(op));
+    node_def->set_name(string(name));
+    node_def->set_op(string(op));
     if (!control_dep) {
       std::for_each(inputs.begin(), inputs.end(), [&node_def](NodeDef* input) {
         node_def->add_input(input->name());
diff --git a/tensorflow/tools/graph_transforms/transform_graph.cc b/tensorflow/tools/graph_transforms/transform_graph.cc
index 5cae8f8d8f..7efe450710 100644
--- a/tensorflow/tools/graph_transforms/transform_graph.cc
+++ b/tensorflow/tools/graph_transforms/transform_graph.cc
@@ -65,19 +65,19 @@ Status ParseTransformParameters(const string& transforms_string,
               .GetResult(&remaining, &transform_name);
       if (!found_transform_name) {
         return errors::InvalidArgument("Looking for transform name, but found ",
-                                       std::string(remaining).c_str());
+                                       string(remaining).c_str());
       }
       if (Scanner(remaining).OneLiteral("(").GetResult(&remaining, &match)) {
         state = TRANSFORM_PARAM_NAME;
       } else {
         // Add a transform with no parameters.
-        params_list->push_back({std::string(transform_name), func_parameters});
+        params_list->push_back({string(transform_name), func_parameters});
         transform_name = "";
         state = TRANSFORM_NAME;
       }
     } else if (state == TRANSFORM_PARAM_NAME) {
       if (Scanner(remaining).OneLiteral(")").GetResult(&remaining, &match)) {
-        params_list->push_back({std::string(transform_name), func_parameters});
+        params_list->push_back({string(transform_name), func_parameters});
         transform_name = "";
         state = TRANSFORM_NAME;
       } else {
@@ -92,13 +92,13 @@ Status ParseTransformParameters(const string& transforms_string,
         if (!found_parameter_name) {
           return errors::InvalidArgument(
               "Looking for parameter name, but found ",
-              std::string(remaining).c_str());
+              string(remaining).c_str());
         }
         if (Scanner(remaining).OneLiteral("=").GetResult(&remaining, &match)) {
           state = TRANSFORM_PARAM_VALUE;
         } else {
           return errors::InvalidArgument("Looking for =, but found ",
-                                         std::string(remaining).c_str());
+                                         string(remaining).c_str());
         }
       }
     } else if (state == TRANSFORM_PARAM_VALUE) {
@@ -120,10 +120,9 @@ Status ParseTransformParameters(const string& transforms_string,
       }
       if (!found_parameter_value) {
         return errors::InvalidArgument("Looking for parameter name, but found ",
-                                       std::string(remaining).c_str());
+                                       string(remaining).c_str());
       }
-      func_parameters[std::string(parameter_name)].push_back(
-          std::string(parameter_value));
+      func_parameters[string(parameter_name)].emplace_back(parameter_value);
       // Eat up any trailing quotes.
       Scanner(remaining).ZeroOrOneLiteral("\"").GetResult(&remaining, &match);
       Scanner(remaining).ZeroOrOneLiteral("'").GetResult(&remaining, &match);
diff --git a/tensorflow/tools/graph_transforms/transform_utils.cc b/tensorflow/tools/graph_transforms/transform_utils.cc
index cb084e49b7..c715380aae 100644
--- a/tensorflow/tools/graph_transforms/transform_utils.cc
+++ b/tensorflow/tools/graph_transforms/transform_utils.cc
@@ -93,7 +93,7 @@ void NodeNamePartsFromInput(const string& input_name, string* prefix,
   } else {
     *prefix = "";
   }
-  *node_name = std::string(node_name_piece);
+  *node_name = string(node_name_piece);
 }
 
 string NodeNameFromInput(const string& input_name) {