[midend]初步修复内存泄漏问题(仍然剩余11处)

src/sysyc.cpp

@@ -110,6 +110,7 @@ int main(int argc, char **argv) {
   // 如果指定停止在 AST 阶段，则打印并退出
   if (argStopAfter == "ast") {
     cout << moduleAST->toStringTree(true) << '\n';
+    sysy::cleanupIRPools(); // 清理内存池
     return EXIT_SUCCESS;
   }
 
@@ -150,6 +151,8 @@ int main(int argc, char **argv) {
       ofstream fout(argOutputFilename);
       if (not fout.is_open()) {
         cerr << "Failed to open output file: " << argOutputFilename << endl;
+        moduleIR->cleanup(); // 清理模块
+        sysy::cleanupIRPools(); // 清理内存池
         return EXIT_FAILURE;
       }
       moduleIR->print(fout);
@@ -158,6 +161,8 @@ int main(int argc, char **argv) {
       // 输出到标准输出
       moduleIR->print(cout);
     }
+    moduleIR->cleanup(); // 清理模块
+    sysy::cleanupIRPools(); // 清理内存池
     return EXIT_SUCCESS;
 
   }
@@ -178,6 +183,8 @@ int main(int argc, char **argv) {
       ofstream fout(argOutputFilename);
       if (not fout.is_open()) {
         cerr << "Failed to open output file: " << argOutputFilename << endl;
+        moduleIR->cleanup(); // 清理模块
+        sysy::cleanupIRPools(); // 清理内存池
         return EXIT_FAILURE;
       }
       fout << asmCode << endl;
@@ -185,6 +192,8 @@ int main(int argc, char **argv) {
     } else {
       cout << asmCode << endl;
     }
+    moduleIR->cleanup(); // 清理模块
+    sysy::cleanupIRPools(); // 清理内存池
     return EXIT_SUCCESS;
   }
 
@@ -193,5 +202,7 @@ int main(int argc, char **argv) {
   cout << "Compilation completed. No output specified (neither -s nor -S). Exiting.\n";
   // return EXIT_SUCCESS; // 或者这里调用一个链接器生成可执行文件
 
+  moduleIR->cleanup(); // 清理模块
+  sysy::cleanupIRPools(); // 清理内存池
   return EXIT_SUCCESS; 
 }