diff --git a/scripts/mir_test1.sh b/scripts/mir_test1.sh
index fa2931a..a8f1871 100755
--- a/scripts/mir_test1.sh
+++ b/scripts/mir_test1.sh
@@ -115,31 +115,38 @@ for test_file in "${test_files[@]}"; do
     rm -f "$tmp_out"
     
     if [ -f "$expected_file" ]; then
-        expected=$(cat "$expected_file" | tr -d '\n')
+        expected_output=$(sed '$d' "$expected_file" | tr -d '\n')
+        expected_exit_code=$(tail -1 "$expected_file")
+        # 先比较输出
+        output_match=true
+        if [ "$program_output" != "$expected_output" ]; then
+            output_match=false
+        fi
+        
+        # 再比较退出码
+        exit_match=true
+        if [ $exit_code -ne "$expected_exit_code" ] 2>/dev/null; then
+            exit_match=false
+        fi
         
-        if [[ "$expected" =~ ^[0-9]+$ ]] && [ "$expected" -ge 0 ] && [ "$expected" -le 255 ] && [ -z "$program_output" ]; then
-            # 期望退出码（且没有输出）
-            if [ $exit_code -eq "$expected" ] 2>/dev/null; then
-                echo -e "  ${GREEN}✓${NC} $relative_path (退出码: $exit_code)"
-                ((pass_run++))
-            else
-                echo -e "  ${RED}✗${NC} $relative_path (退出码: 期望 $expected, 实际 $exit_code)"
-                ((fail_run++))
-            fi
+        if [ "$output_match" = true ] && [ "$exit_match" = true ]; then
+            echo -e "  ${GREEN}✓${NC} $relative_path"
+            ((pass_run++))
         else
-            # 期望输出内容
-            if [ "$program_output" = "$expected" ]; then
-                echo -e "  ${GREEN}✓${NC} $relative_path (输出匹配)"
-                ((pass_run++))
-            else
-                echo -e "  ${RED}✗${NC} $relative_path (输出不匹配: 期望 '$expected', 实际 '$program_output')"
-                ((fail_run++))
-            fi
+            echo -ne "  ${RED}✗${NC} $relative_path"
+            [ "$output_match" = false ] && echo -n " (输出不匹配: 期望 '$expected_output', 实际 '$program_output')"
+            [ "$exit_match" = false ] && echo -n " (退出码不匹配: 期望 $expected_exit_code, 实际 $exit_code)"
+            echo
+            ((fail_run++))
         fi
     else
-        # 没有期望文件
-        echo -e "  ${GREEN}✓${NC} $relative_path (退出码: $exit_code, 输出: '$program_output')"
-        ((pass_run++))
+        if [ $exit_code -eq 0 ]; then
+            echo -e "  ${GREEN}✓${NC} $relative_path (退出码: $exit_code, 输出: '$program_output')"
+            ((pass_run++))
+        else
+            echo -e "  ${RED}✗${NC} $relative_path (退出码: $exit_code, 输出: '$program_output')"
+            ((fail_run++))
+        fi
     fi
 done
 
diff --git a/src/irgen/IRGenStmt.cpp b/src/irgen/IRGenStmt.cpp
index ab51ab7..0142a90 100644
--- a/src/irgen/IRGenStmt.cpp
+++ b/src/irgen/IRGenStmt.cpp
@@ -33,21 +33,6 @@ IRGenImpl::BlockFlow IRGenImpl::VisitStmt(SysYParser::StmtContext& s) {
       } else if (func_->GetType()->IsInt32() && v->IsInt1()) {
         v = ToI32(v);
       }
-      if (func_->GetName() == "main" && !func_->GetType()->IsVoid()) {
-          auto* nl = builder_.CreateConstInt(10);
-          // ((v % 256) + 256) % 256
-          auto* mod256 = builder_.CreateMod(v, builder_.CreateConstInt(256), 
-                                            module_.GetContext().NextTemp());
-          auto* add256 = builder_.CreateAdd(mod256, builder_.CreateConstInt(256),
-                                            module_.GetContext().NextTemp());
-          auto* masked = builder_.CreateMod(add256, builder_.CreateConstInt(256),
-                                            module_.GetContext().NextTemp());
-          
-          std::vector<ir::Value*> args1 = {masked};
-          builder_.CreateCallExternal("putint", ir::Type::GetVoidType(), args1, "");
-          std::vector<ir::Value*> args2 = {nl};
-          builder_.CreateCallExternal("putch", ir::Type::GetVoidType(), args2, "");
-      }
       builder_.CreateRet(v);
     } else {
       builder_.CreateRetVoid();
@@ -238,4 +223,4 @@ IRGenImpl::BlockFlow IRGenImpl::VisitStmt(SysYParser::StmtContext& s) {
   }
 
   throw std::runtime_error(FormatError("irgen", "不支持的语句类型"));
-}
+}
\ No newline at end of file
diff --git a/test/test_case/testdata/functional/test_riscv.sy b/test/test_case/testdata/functional/test_riscv.sy
deleted file mode 100644
index 3cb2bdf..0000000
--- a/test/test_case/testdata/functional/test_riscv.sy
+++ /dev/null
@@ -1,7 +0,0 @@
-// test/test_case/functional/test_riscv.sy
-int main() {
-    int a = 10;
-    int b = 20;
-    int c = a + b;
-    return c;  // 应该返回30
-}
\ No newline at end of file