diff --git a/src/SysYIRGenerator.cpp b/src/SysYIRGenerator.cpp
index f38db5c..6fe421f 100644
--- a/src/SysYIRGenerator.cpp
+++ b/src/SysYIRGenerator.cpp
@@ -1,3 +1,4 @@
+// SysYIRGenerator.cpp
 #include "SysYIRGenerator.h"
 #include <iomanip>
 
@@ -32,10 +33,9 @@ std::any SysYIRGenerator::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
     std::string type = ctx->bType()->getText();
     for (auto constDef : ctx->constDef()) {
         std::string varName = constDef->Ident()->getText();
-        symbolTable[varName].second = type;
         std::string llvmType = getLLVMType(type);
         std::string allocaName = getNextTemp();
-        symbolTable[varName] = {allocaName, llvmType};
+        
         irStream << "  " << allocaName << " = alloca " << llvmType << ", align 4\n";
         
         if (constDef->constInitVal()) {
@@ -43,6 +43,7 @@ std::any SysYIRGenerator::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
             irStream << "  store " << llvmType << " " << value << ", " << llvmType 
                      << "* " << allocaName << ", align 4\n";
         }
+        symbolTable[varName] = {allocaName, llvmType};
     }
     return nullptr;
 }
@@ -50,7 +51,6 @@ std::any SysYIRGenerator::visitConstDecl(SysYParser::ConstDeclContext* ctx) {
 std::any SysYIRGenerator::visitVarDecl(SysYParser::VarDeclContext* ctx) {
     std::string type = ctx->bType()->getText();
     for (auto varDef : ctx->varDef()) {
-        symbolTable[varDef->Ident()->getText()].second = type;
         varDef->accept(this);
     }
     return nullptr;
@@ -61,7 +61,7 @@ std::any SysYIRGenerator::visitVarDef(SysYParser::VarDefContext* ctx) {
     std::string type = symbolTable[varName].second;
     std::string llvmType = getLLVMType(type);
     std::string allocaName = getNextTemp();
-    symbolTable[varName] = {allocaName, llvmType};
+    
     irStream << "  " << allocaName << " = alloca " << llvmType << ", align 4\n";
     
     if (ctx->ASSIGN()) {
@@ -69,6 +69,7 @@ std::any SysYIRGenerator::visitVarDef(SysYParser::VarDefContext* ctx) {
         irStream << "  store " << llvmType << " " << value << ", " << llvmType 
                  << "* " << allocaName << ", align 4\n";
     }
+    symbolTable[varName] = {allocaName, llvmType};
     return nullptr;
 }
 
@@ -86,18 +87,10 @@ std::any SysYIRGenerator::visitFuncDef(SysYParser::FuncDefContext* ctx) {
             if (i > 0) irStream << ", ";
             std::string paramType = getLLVMType(params[i]->bType()->getText());
             irStream << paramType << " noundef %" << i;
+            symbolTable[params[i]->Ident()->getText()] = {"%" + std::to_string(i), paramType};
         }
     }
-    irStream << ") #0 {\nentry:\n";
-    
-    if (ctx->funcFParams()) {
-        auto params = ctx->funcFParams()->funcFParam();
-        for (size_t i = 0; i < params.size(); ++i) {
-            std::string paramName = params[i]->Ident()->getText();
-            std::string paramType = getLLVMType(params[i]->bType()->getText());
-            symbolTable[paramName] = {"%" + std::to_string(i), paramType};
-        }
-    }
+    irStream << ") #0 {\n";
     
     ctx->blockStmt()->accept(this);
     
@@ -108,7 +101,7 @@ std::any SysYIRGenerator::visitFuncDef(SysYParser::FuncDefContext* ctx) {
             irStream << "  ret " << currentReturnType << " 0\n";
         }
     }
-    irStream << "}\n\n";
+    irStream << "}\n";
     return nullptr;
 }
 
@@ -122,8 +115,7 @@ std::any SysYIRGenerator::visitBlockStmt(SysYParser::BlockStmtContext* ctx) {
 std::any SysYIRGenerator::visitStmt(SysYParser::StmtContext* ctx) {
     if (ctx->lValue() && ctx->ASSIGN()) {
         std::string lhsAlloca = std::any_cast<std::string>(ctx->lValue()->accept(this));
-        std::string varName = ctx->lValue()->Ident()->getText();
-        std::string lhsType = symbolTable[varName].second;
+        std::string lhsType = symbolTable[ctx->lValue()->Ident()->getText()].second;
         std::string rhs = std::any_cast<std::string>(ctx->exp()->accept(this));
         irStream << "  store " << lhsType << " " << rhs << ", " << lhsType 
                  << "* " << lhsAlloca << ", align 4\n";
@@ -141,17 +133,17 @@ std::any SysYIRGenerator::visitStmt(SysYParser::StmtContext* ctx) {
         std::string falseLabel = "if.else." + std::to_string(tempCounter);
         std::string mergeLabel = "if.end." + std::to_string(tempCounter++);
         
-        irStream << "  br i1 " << cond << ", label %" << trueLabel << ", label %" << falseLabel << "\n\n";
+        irStream << "  br i1 " << cond << ", label %" << trueLabel << ", label %" << falseLabel << "\n";
         
         irStream << trueLabel << ":\n";
         ctx->stmt(0)->accept(this);
-        irStream << "  br label %" << mergeLabel << "\n\n";
+        irStream << "  br label %" << mergeLabel << "\n";
         
         irStream << falseLabel << ":\n";
         if (ctx->ELSE()) {
             ctx->stmt(1)->accept(this);
         }
-        irStream << "  br label %" << mergeLabel << "\n\n";
+        irStream << "  br label %" << mergeLabel << "\n";
         
         irStream << mergeLabel << ":\n";
     }
@@ -207,14 +199,12 @@ std::any SysYIRGenerator::visitUnaryExp(SysYParser::UnaryExpContext* ctx) {
                 args.push_back(std::any_cast<std::string>(argCtx->accept(this)));
             }
         }
-        
         std::string temp = getNextTemp();
         std::string argList = "";
         for (size_t i = 0; i < args.size(); ++i) {
             if (i > 0) argList += ", ";
             argList += args[i];
         }
-        
         irStream << "  " << temp << " = call " << currentReturnType << " @" << funcName << "(" << argList << ")\n";
         return temp;
     }
@@ -307,14 +297,11 @@ std::any SysYIRGenerator::visitLAndExp(SysYParser::LAndExpContext* ctx) {
         std::string endLabel = "land.end." + std::to_string(tempCounter++);
         std::string temp = getNextTemp();
         
-        irStream << "  " << temp << " = and i1 " << left << ", 1\n";
-        irStream << "  br i1 " << temp << ", label %" << falseLabel << ", label %" << endLabel << "\n\n";
-        
+        irStream << "  br label %" << falseLabel << "\n";
         irStream << falseLabel << ":\n";
         std::string right = std::any_cast<std::string>(eqExps[i]->accept(this));
-        irStream << "  " << temp << " = and i1 " << temp << ", " << right << "\n";
-        irStream << "  br label %" << endLabel << "\n\n";
-        
+        irStream << "  " << temp << " = and i1 " << left << ", " << right << "\n";
+        irStream << "  br label %" << endLabel << "\n";
         irStream << endLabel << ":\n";
         left = temp;
     }
@@ -329,14 +316,11 @@ std::any SysYIRGenerator::visitLOrExp(SysYParser::LOrExpContext* ctx) {
         std::string endLabel = "lor.end." + std::to_string(tempCounter++);
         std::string temp = getNextTemp();
         
-        irStream << "  " << temp << " = or i1 " << left << ", 0\n";
-        irStream << "  br i1 " << temp << ", label %" << trueLabel << ", label %" << endLabel << "\n\n";
-        
+        irStream << "  br label %" << trueLabel << "\n";
         irStream << trueLabel << ":\n";
         std::string right = std::any_cast<std::string>(lAndExps[i]->accept(this));
-        irStream << "  " << temp << " = or i1 " << temp << ", " << right << "\n";
-        irStream << "  br label %" << endLabel << "\n\n";
-        
+        irStream << "  " << temp << " = or i1 " << left << ", " << right << "\n";
+        irStream << "  br label %" << endLabel << "\n";
         irStream << endLabel << ":\n";
         left = temp;
     }