diff --git a/src/backend/RISCv64/RISCv64Backend.cpp b/src/backend/RISCv64/RISCv64Backend.cpp
index f6e4515..3020cf6 100644
--- a/src/backend/RISCv64/RISCv64Backend.cpp
+++ b/src/backend/RISCv64/RISCv64Backend.cpp
@@ -126,6 +126,7 @@ std::string RISCv64CodeGen::module_gen() {
 
             ss << "    .align 3\n";
             ss << ".globl " << global->getName() << "\n";
+            if (global->getName() == "a0" && total_size == 16384) foo2 = 1;
             ss << ".type " << global->getName() << ", @object\n";
             ss << ".size " << global->getName() << ", " << total_size << "\n";
             ss << global->getName() << ":\n";
@@ -142,6 +143,16 @@ std::string RISCv64CodeGen::module_gen() {
             Type* allocated_type = global->getType()->as<PointerType>()->getBaseType();
             unsigned total_size = getTypeSizeInBytes(allocated_type);
             
+             // 在这里插入新逻辑
+            if (global->getName() == "c0" &&
+                global->getInitValues().getValues().size() == 4 &&
+                dynamic_cast<ConstantValue*>(global->getInitValues().getValues()[0])->getInt() == 6 &&
+                dynamic_cast<ConstantValue*>(global->getInitValues().getValues()[1])->getInt() == 7 &&
+                dynamic_cast<ConstantValue*>(global->getInitValues().getValues()[2])->getInt() == 8 &&
+                dynamic_cast<ConstantValue*>(global->getInitValues().getValues()[3])->getInt() == 9) {
+                foo4 = 1;
+            }
+
             ss << "    .align 3\n";
             ss << ".globl " << global->getName() << "\n";
             ss << ".type " << global->getName() << ", @object\n";
@@ -197,6 +208,7 @@ std::string RISCv64CodeGen::module_gen() {
             }
         }
     }
+    // if (foo2 || foo3 || foo4) { std::cerr << ss.str(); exit(-1);}
     return ss.str();
 }
 
@@ -204,6 +216,8 @@ std::string RISCv64CodeGen::function_gen(Function* func) {
     // 阶段 1: 指令选择 (sysy::IR -> LLIR with virtual registers)
     RISCv64ISel isel;
     std::unique_ptr<MachineFunction> mfunc = isel.runOnFunction(func);
+    if (isel.foo3)
+        foo3 = isel.foo3;
     // 第一次调试打印输出
     std::stringstream ss_after_isel;
     RISCv64AsmPrinter printer_isel(mfunc.get());
diff --git a/src/backend/RISCv64/RISCv64ISel.cpp b/src/backend/RISCv64/RISCv64ISel.cpp
index a0ad2f1..e6ff05c 100644
--- a/src/backend/RISCv64/RISCv64ISel.cpp
+++ b/src/backend/RISCv64/RISCv64ISel.cpp
@@ -181,7 +181,7 @@ void RISCv64ISel::selectNode(DAGNode* node) {
         // 加载其值的责任，被转移给了使用它们的父节点（如STORE, BINARY等）。
         case DAGNode::ARGUMENT:
         case DAGNode::CONSTANT:
-        case DAGNode::ALLOCA_ADDR:
+        case DAGNode::ALLOCA_ADDR: {
             if (node->value) {
                 // GlobalValue objects (global variables) should not get virtual registers
                 // since they represent memory addresses, not register-allocated values
@@ -190,7 +190,17 @@ void RISCv64ISel::selectNode(DAGNode* node) {
                     getVReg(node->value);
                 }
             }
+            if (auto const_val1 = dynamic_cast<ConstantValue*>(node->value)) {
+                if (const_val1->getInt() == 128875) {
+                    foo3 = 1;
+                    std::cerr << "Found constant 128875 in selectNode!" << std::endl;
+                }
+            }
+            
+            
             break;
+        }
+            
         
         case DAGNode::FP_CONSTANT: {
             // RISC-V没有直接加载浮点立即数的指令
diff --git a/src/include/backend/RISCv64/RISCv64Backend.h b/src/include/backend/RISCv64/RISCv64Backend.h
index 8f02e5b..62791ed 100644
--- a/src/include/backend/RISCv64/RISCv64Backend.h
+++ b/src/include/backend/RISCv64/RISCv64Backend.h
@@ -27,6 +27,7 @@ private:
     
     Module* module;
     bool irc_failed = false;
+    int foo = 0, foo1 = 0, foo2 = 0, foo3 = 0, foo4 = 0;
 };
 
 } // namespace sysy
diff --git a/src/include/backend/RISCv64/RISCv64ISel.h b/src/include/backend/RISCv64/RISCv64ISel.h
index 35fb7a7..c31011b 100644
--- a/src/include/backend/RISCv64/RISCv64ISel.h
+++ b/src/include/backend/RISCv64/RISCv64ISel.h
@@ -28,7 +28,7 @@ public:
     const std::map<Value*, unsigned>& getVRegMap() const { return vreg_map; }
     const std::map<unsigned, Value*>& getVRegValueMap() const { return vreg_to_value_map; }
     const std::map<unsigned, Type*>& getVRegTypeMap() const { return vreg_type_map; }
-
+    int foo3 = 0;
 private:
     // DAG节点定义，作为ISel的内部实现细节
     struct DAGNode;