fix conv2dbackprop_eltwise_eltwise_fusion_pass which lack output_used_num

mindspore/ccsrc/backend/optimizer/ascend/buffer_fusion/conv2dbackprop_eltwise_eltwise_fusion_pass.cc

@@ -38,10 +38,13 @@ void Conv2DBackpropEltwiseEltwiseFusionPass::MatchConv2DBackpropInputEltwiseEltw
   } else {
     return;
   }
+  auto manager = kernel_graph.manager();
+  MS_EXCEPTION_IF_NULL(manager);
   auto input_cnode = eltwise_input->cast<CNodePtr>();
   MS_EXCEPTION_IF_NULL(input_cnode);
   auto double_in_eltwise_input = input_cnode->input(2);
   MS_EXCEPTION_IF_NULL(double_in_eltwise_input);
+  std::vector<int64_t> conv2d_bp_output_used_num;
   if (!double_in_eltwise_input->isa<CNode>() || !AnfAlgo::IsRealCNodeKernel(double_in_eltwise_input)) {
     return;
   }
@@ -50,6 +53,8 @@ void Conv2DBackpropEltwiseEltwiseFusionPass::MatchConv2DBackpropInputEltwiseEltw
     (void)record.insert(double_in_eltwise_input);
     candidate_fusion->push_back(record);
     SetRecordFusionId(record);
+    conv2d_bp_output_used_num.emplace_back(SizeToLong(manager->node_users()[double_in_eltwise_input].size()));
+    AnfAlgo::SetNodeAttr(kAttrOutputUsedNum, MakeValue(conv2d_bp_output_used_num), double_in_eltwise_input);
   } else {
     auto double_in_eltwise_input_1 = input_cnode->input(1);
     MS_EXCEPTION_IF_NULL(double_in_eltwise_input_1);
@@ -61,8 +66,13 @@ void Conv2DBackpropEltwiseEltwiseFusionPass::MatchConv2DBackpropInputEltwiseEltw
       (void)record.insert(double_in_eltwise_input_1);
       candidate_fusion->push_back(record);
       SetRecordFusionId(record);
+      conv2d_bp_output_used_num.emplace_back(SizeToLong(manager->node_users()[double_in_eltwise_input_1].size()));
+      AnfAlgo::SetNodeAttr(kAttrOutputUsedNum, MakeValue(conv2d_bp_output_used_num), double_in_eltwise_input_1);
     }
   }
+  std::vector<int64_t> eltwise_output_used_num;
+  eltwise_output_used_num.emplace_back(SizeToLong(manager->node_users()[input_cnode].size()));
+  AnfAlgo::SetNodeAttr(kAttrOutputUsedNum, MakeValue(eltwise_output_used_num), eltwise_input);
 }
 
 void Conv2DBackpropEltwiseEltwiseFusionPass::MatchSingleFusionPattern(const session::KernelGraph &kernel_graph,