!22978 fix insert cast in cpu pynative mode

Merge pull request !22978 from baihuawei/fix_pynative_insert_cast

mindspore/ccsrc/backend/optimizer/cpu/insert_cast_cpu.cc

@@ -26,6 +26,7 @@
 #include "backend/session/anf_runtime_algorithm.h"
 #include "backend/session/kernel_graph.h"
 #include "utils/utils.h"
+#include "utils/ms_context.h"
 #include "backend/kernel_compiler/common_utils.h"
 
 namespace mindspore {
@@ -129,13 +130,17 @@ bool InsertCastCPU::Run(const FuncGraphPtr &func_graph) {
       InsertCast(func_graph, cnode);
     }
   }
-  AnfNodePtrList outputs;
-  kernel::GetFuncGraphOutputNodes(func_graph, &outputs);
-  auto func_output = func_graph->output();
-  for (auto node : outputs) {
-    if (node != nullptr && node->isa<CNode>() && AnfAlgo::IsRealKernel(node)) {
-      auto cnode = node->cast<CNodePtr>();
-      InsertCastForGraphOutput(func_graph, cnode, func_output);
+  auto ms_context = MsContext::GetInstance();
+  MS_EXCEPTION_IF_NULL(ms_context);
+  if (ms_context->get_param<int>(MS_CTX_EXECUTION_MODE) != kPynativeMode) {
+    AnfNodePtrList outputs;
+    kernel::GetFuncGraphOutputNodes(func_graph, &outputs);
+    auto func_output = func_graph->output();
+    for (auto node : outputs) {
+      if (node != nullptr && node->isa<CNode>() && AnfAlgo::IsRealKernel(node)) {
+        auto cnode = node->cast<CNodePtr>();
+        InsertCastForGraphOutput(func_graph, cnode, func_output);
+      }
     }
   }
   return true;