!2780 handle partial node in CreateNewCNode

Merge pull request !2780 from Margaret_wangrui/handle_partial

mindspore/ccsrc/session/session_basic.cc

@@ -447,6 +447,37 @@ CNodePtr SessionBasic::CreateNewCNode(const CNodePtr &cnode, bool valid_input, K
   return new_cnode;
 }
 
+static std::vector<AnfNodePtr> CreateSwitchOrPartialNode(const CNodePtr &cnode, KernelGraph *graph) {
+  MS_EXCEPTION_IF_NULL(cnode);
+  MS_EXCEPTION_IF_NULL(graph);
+  // create primitive of cnode:call(partial or switch)
+  std::vector<AnfNodePtr> cnode_inputs = {
+    graph->NewValueNode(NewValueNode(std::make_shared<Primitive>(prim::kPrimCall->name())))};
+  auto attr_input = cnode->input(kAnfPrimitiveIndex);
+  MS_EXCEPTION_IF_NULL(attr_input);
+  auto cnode_input = graph->GetBackendAnfByFrontAnf(attr_input);
+  if (cnode_input == nullptr) {
+    MS_LOG(EXCEPTION) << "CNode input[0] is CNode:" << attr_input->DebugString()
+                      << ", but input[0] has not been created.";
+  }
+  // if the node is partial, insert the inputs of partial to the call
+  if (AnfAlgo::CheckPrimitiveType(cnode_input, prim::kPrimPartial)) {
+    auto partial_node = attr_input->cast<CNodePtr>();
+    MS_EXCEPTION_IF_NULL(partial_node);
+    auto partial_inputs = partial_node->inputs();
+    std::transform(partial_inputs.begin() + kFirstDataInputIndex, partial_inputs.end(),
+                   std::back_inserter(cnode_inputs), [&graph](const AnfNodePtr &node) {
+                     MS_EXCEPTION_IF_NULL(graph->GetBackendAnfByFrontAnf(node));
+                     return graph->GetBackendAnfByFrontAnf(node);
+                   });
+    return cnode_inputs;
+  } else if (AnfAlgo::CheckPrimitiveType(cnode_input, prim::kPrimSwitch)) {
+    cnode_inputs.emplace_back(cnode_input);
+    return cnode_inputs;
+  }
+  MS_LOG(EXCEPTION) << "CNode input[0] must be partial or switch.";
+}
+
 CNodePtr SessionBasic::CreateNewCNode(const CNodePtr &cnode, KernelGraph *graph) {
   MS_EXCEPTION_IF_NULL(cnode);
   MS_EXCEPTION_IF_NULL(graph);
@@ -471,18 +502,7 @@ CNodePtr SessionBasic::CreateNewCNode(const CNodePtr &cnode, KernelGraph *graph)
       }
     }
   } else if (attr_input->isa<CNode>()) {
-    // create primitive of cnode:call(switch)
-    cnode_inputs = {graph->NewValueNode(NewValueNode(std::make_shared<Primitive>(prim::kPrimCall->name())))};
-    if (graph->GetBackendAnfByFrontAnf(attr_input) != nullptr) {
-      auto cnode_input = graph->GetBackendAnfByFrontAnf(attr_input);
-      if (!AnfAlgo::CheckPrimitiveType(cnode_input, prim::kPrimSwitch)) {
-        MS_LOG(EXCEPTION) << "CNode input[0] must be switch.";
-      }
-      cnode_inputs.emplace_back(cnode_input);
-    } else {
-      MS_LOG(EXCEPTION) << "CNode input[0] is CNode:" << attr_input->DebugString()
-                        << ", but input[0] has not been created.";
-    }
+    cnode_inputs = CreateSwitchOrPartialNode(cnode, graph);
   } else {
     // get primitive of old node
     auto prim = AnfAlgo::GetCNodePrimitive(cnode);