fix static warnings for some graph_kernel files

mindspore/ccsrc/backend/optimizer/graph_kernel/eliminate_redundant_output.cc

@@ -123,7 +123,7 @@ bool IsSideEffectNode(const AnfNodePtr &node) {
  */
 class UnifyRepeatedOutput : public Pass {
  public:
-  bool Run(const FuncGraphPtr &func_graph) {
+  bool Run(const FuncGraphPtr &func_graph) override {
     auto mng = func_graph->manager();
     MS_EXCEPTION_IF_NULL(mng);
     auto todos = FindGraphKernelsWithMultiOutput(func_graph);
@@ -156,7 +156,8 @@ class UnifyRepeatedOutput : public Pass {
     index_map_.resize(outputs.size());
     bool found = false;
     for (size_t i = 0; i < outputs.size(); ++i) {
-      index_map_[i] = std::find(outputs.begin(), outputs.begin() + i, outputs[i]) - outputs.begin();
+      index_map_[i] =
+        static_cast<size_t>(std::find(outputs.begin(), outputs.begin() + i, outputs[i]) - outputs.begin());
       if (index_map_[i] != i) {
         found = true;
       }
@@ -184,7 +185,7 @@ class UnifyRepeatedOutput : public Pass {
  */
 class UnifyRepeatedGetitem : public Pass {
  public:
-  bool Run(const FuncGraphPtr &func_graph) {
+  bool Run(const FuncGraphPtr &func_graph) override {
     auto mng = func_graph->manager();
     MS_EXCEPTION_IF_NULL(mng);
     auto todos = FindGraphKernelsWithMultiOutput(func_graph);
@@ -211,7 +212,7 @@ bool EliminateRedundantOutput::Run(const FuncGraphPtr &func_graph) {
   return changed;
 }
 
-void EliminateHangingOutput::UpdateGetitemIndex(const AnfNodePtr &getitem, size_t offset) {
+void EliminateHangingOutput::UpdateGetitemIndex(const AnfNodePtr &getitem, size_t offset) const {
   if (offset == 0) return;
   MS_EXCEPTION_IF_NULL(getitem);
   auto index = GetIndex(getitem);

mindspore/ccsrc/backend/optimizer/graph_kernel/eliminate_redundant_output.h

@@ -41,7 +41,7 @@ class EliminateHangingOutput : public Pass {
 
  private:
   // update the GetItem(node, i) to GetItem(node, i - offset)
-  void UpdateGetitemIndex(const AnfNodePtr &getitem, size_t offset);
+  void UpdateGetitemIndex(const AnfNodePtr &getitem, size_t offset) const;
   AnfNodePtr ReplaceMakeTuple(const AnfNodePtr &node, const AnfNodePtrList &getitems);
 };
 

mindspore/ccsrc/backend/optimizer/graph_kernel/update_state_formatter.cc

@@ -220,7 +220,7 @@ bool ExtendOutputForUpdateState::ProcessIndex(const FuncGraphPtr &func_graph, co
   MS_EXCEPTION_IF_NULL(mng);
   for (auto user : mng->node_users()[getitems_[index]]) {
     if (IsPrimitiveCNode(user.first, prim::kPrimUpdateState)) {
-      user.first->cast<CNodePtr>()->set_input(user.second, new_node);
+      user.first->cast<CNodePtr>()->set_input(static_cast<size_t>(user.second), new_node);
     }
   }
   return true;

mindspore/ccsrc/backend/optimizer/graph_kernel/value_graph_binder.h

@@ -25,7 +25,7 @@ class BindValueToGraph : public Pass {
  public:
   BindValueToGraph() : Pass("bind_value_to_graph") {}
   ~BindValueToGraph() override = default;
-  bool Run(const FuncGraphPtr &func_graph);
+  bool Run(const FuncGraphPtr &func_graph) override;
 };
 using BindValueToGraphPtr = std::shared_ptr<BindValueToGraph>;
 }  // namespace opt