[midend]更新遍静态ID定义方法，

注册遍模板函数重构（针对遍的不同构造方法），
修复phi指令更新引起的旧代码错误，
将CFG优化适配到现有终端框架中，
独立CFG优化方法使得其他优化遍能独立调用，
usedelete方法回调取消删除功能。
IRGenerator代码风格修改。

src/Pass.cpp

@@ -1,15 +1,14 @@
-// Pass.cpp
-#include "Pass.h"
+#include "Dom.h"
+#include "Liveness.h"
 #include "SysYIRCFGOpt.h"
 #include "SysYIRPrinter.h"
+#include "Pass.h"
 #include <iostream>
 #include <queue>
 #include <map>
 #include <set>
 #include <algorithm>
 #include <vector>
-#include "Dom.h"
-#include "Liveness.h"
 
 extern int DEBUG; // 全局调试标志
 namespace sysy {
@@ -18,18 +17,45 @@ namespace sysy {
 // 封装优化流程的函数：包含Pass注册和迭代运行逻辑
 // ======================================================================
 
-void PassManager::runOptimizationPipeline(Module* moduleIR, int optLevel) {
+void PassManager::runOptimizationPipeline(Module* moduleIR, IRBuilder* builderIR, int optLevel) {
     if (DEBUG) std::cout << "--- Starting Middle-End Optimizations (Level -O" << optLevel << ") ---\n";
 
-    // 1. 注册所有可用的分析遍和优化遍
-    // 这些注册只需执行一次。
-    sysy::registerAnalysisPass<sysy::DominatorTreeAnalysisPass>();
-    sysy::registerAnalysisPass<sysy::LivenessAnalysisPass>();
+    /*
+      中端开发框架基本流程：
+      1) 分析pass
+        1. 实现分析pass并引入Pass.cpp
+        2. 注册分析pass
+      2) 优化pass
+        1. 实现优化pass并引入Pass.cpp
+        2. 注册优化pass
+        3. 添加优化passid
+    */
+    // 注册分析遍
+    registerAnalysisPass<sysy::DominatorTreeAnalysisPass>();
+    registerAnalysisPass<sysy::LivenessAnalysisPass>();
 
+    // 注册优化遍
+    registerOptimizationPass<SysYDelInstAfterBrPass>();
+    registerOptimizationPass<SysYDelNoPreBLockPass>();
+    registerOptimizationPass<SysYBlockMergePass>();
+
+    registerOptimizationPass<SysYDelEmptyBlockPass>(builderIR);
+    registerOptimizationPass<SysYCondBr2BrPass>(builderIR);
+    registerOptimizationPass<SysYAddReturnPass>(builderIR);
+
+    if (optLevel >= 1) {
+        if (DEBUG) std::cout << "Applying -O1 optimizations.\n";
+
+        // 只添加优化遍的 ID
+        this->addPass(&SysYDelInstAfterBrPass::ID);
+        this->addPass(&SysYDelNoPreBLockPass::ID);
+        this->addPass(&SysYBlockMergePass::ID);
+        this->addPass(&SysYDelEmptyBlockPass::ID);
+        this->addPass(&SysYCondBr2BrPass::ID);
+        this->addPass(&SysYAddReturnPass::ID);
+    }
 
     // 2. 创建遍管理器
-    sysy::PassManager pm(moduleIR);
-
     // 3. 根据优化级别添加不同的优化遍
     // TODO : 根据 optLevel 添加不同的优化遍
     //        讨论 是不动点迭代进行优化遍还是手动客制化优化遍的顺序？
@@ -42,7 +68,7 @@ void PassManager::runOptimizationPipeline(Module* moduleIR, int optLevel) {
         while(changed_in_iteration) {
             iteration_count++;
             if (DEBUG) std::cout << "Optimization iteration: " << iteration_count << std::endl;
-            changed_in_iteration = pm.run(); // 运行一次所有添加到 PassManager 的遍
+            changed_in_iteration = run(); // 运行一次所有添加到 PassManager 的遍
             if (DEBUG && changed_in_iteration) {
               std::cout << "=== IR after iteration " << iteration_count << " ===\n";
               SysYPrinter printer_iter(moduleIR);
@@ -130,4 +156,24 @@ bool PassManager::run() {
 
 }
 
+
+template <typename AnalysisPassType> void registerAnalysisPass() {
+  PassRegistry::getPassRegistry().registerPass(&AnalysisPassType::ID,
+                                               []() { return std::make_unique<AnalysisPassType>(); });
+}
+
+template <typename OptimizationPassType, typename std::enable_if<
+    std::is_constructible<OptimizationPassType, IRBuilder*>::value, int>::type = 0>
+void registerOptimizationPass(IRBuilder* builder) {
+    PassRegistry::getPassRegistry().registerPass(&OptimizationPassType::ID,
+                                                 [builder]() { return std::make_unique<OptimizationPassType>(builder); });
+}
+
+template <typename OptimizationPassType, typename std::enable_if<
+    !std::is_constructible<OptimizationPassType, IRBuilder*>::value, int>::type = 0>
+void registerOptimizationPass() {
+    PassRegistry::getPassRegistry().registerPass(&OptimizationPassType::ID,
+                                                 []() { return std::make_unique<OptimizationPassType>(); });
+}
+
 } // namespace sysy