[backend]引入了新的pass，负责消除数组复杂地址访问

src/sysyc.cpp

@@ -17,6 +17,7 @@ using namespace antlr4;
 #include "RISCv64Backend.h"
 #include "SysYIRAnalyser.h"
 #include "DeadCodeElimination.h"
+#include "AddressCalculationExpansion.h"
 #include "Mem2Reg.h"
 #include "Reg2Mem.h"
 
@@ -143,20 +144,19 @@ int main(int argc, char **argv) {
     cout << "=== After CFA & AVA (Default) ===\n";
     SysYPrinter(moduleIR).printIR(); // 临时打印器用于调试
   }
-
-  DeadCodeElimination dce(moduleIR, &cfa, &ava);
-  dce.runDCEPipeline();
-  if (DEBUG) {
-    cout << "=== After 1st DCE (Default) ===\n";
-    SysYPrinter(moduleIR).printIR();
+  AddressCalculationExpansion ace(moduleIR, builder);
+  if (ace.run()) {
+      cout << "AddressCalculationExpansion made changes.\n";
+      // 如果 ACE 改变了IR，并且 DEBUG 模式开启，可以考虑打印IR
+      if (DEBUG) {
+          cout << "=== After AddressCalculationExpansion ===\n";
+          SysYPrinter(moduleIR).printIR();
+      }
+  } else {
+      cout << "AddressCalculationExpansion made no changes.\n";
   }
 
 
-
-
-
-
-
   // 根据优化级别，执行额外的优化 pass
   if (optLevel >= 1) { 
     cout << "Applying additional -O" << optLevel << " optimizations...\n";
@@ -174,7 +174,13 @@ int main(int argc, char **argv) {
     // MyCustomOpt2 opt2_pass(moduleIR, builder, &cfa); // 假设需要CFA
     // opt2_pass.run();
     // ... 更多 -O1 特有的优化
-    
+    DeadCodeElimination dce(moduleIR, &cfa, &ava);
+    dce.runDCEPipeline();
+    if (DEBUG) {
+      cout << "=== After 1st DCE (Default) ===\n";
+      SysYPrinter(moduleIR).printIR();
+    }
+
     Mem2Reg mem2reg(moduleIR, builder, &cfa, &ava);
     mem2reg.mem2regPipeline();
     if (DEBUG) {
@@ -212,7 +218,7 @@ int main(int argc, char **argv) {
   // 设置 DEBUG 模式（如果指定了 'asmd'）
   if (argStopAfter == "asmd") {
     DEBUG = 1;
-    DEEPDEBUG = 1;
+    // DEEPDEBUG = 1;
   }
   sysy::RISCv64CodeGen codegen(moduleIR); // 传入优化后的 moduleIR
   string asmCode = codegen.code_gen();