!3612 modify case

Merge pull request !3612 from changzherui/mod_case

mindspore/ccsrc/transform/graph_ir/convert.cc

@@ -1342,9 +1342,11 @@ void DfGraphConvertor::SetOpInput(const OpAdapterPtr &adpt, const CNodePtr &node
   }
 
   for (size_t i = 1; i < input_size; i++) {
-    auto pred = inputs[i];
+    AnfNodePtr pred = nullptr;
     if (case_flag != 0) {
       pred = case_input_handle_cache_[node.get()]->at(i - 1);
+    } else {
+      pred = inputs[i];
     }
 
     while (pred->isa<CNode>() && GetCNodeTargetFuncName(pred->cast<CNodePtr>()) == "Depend") {

tests/ut/python/automl/test_case.py

@@ -29,8 +29,7 @@ class Net(nn.Cell):
 
     def construct(self, x, index):
         x = self.layers[index](x)
-        y = self.conv1(x)
-        return x + y
+        return 2 + x
 
 
 def test_case():