[midend-Loop]循环分析构建，增加很多统计方法和循环信息方法

src/midend/Pass/Pass.cpp

@@ -1,5 +1,6 @@
 #include "Dom.h"
 #include "Liveness.h"
+#include "Loop.h"
 #include "SysYIRCFGOpt.h"
 #include "SysYIRPrinter.h"
 #include "DCE.h"
@@ -37,6 +38,7 @@ void PassManager::runOptimizationPipeline(Module* moduleIR, IRBuilder* builderIR
     // 注册分析遍
     registerAnalysisPass<sysy::DominatorTreeAnalysisPass>();
     registerAnalysisPass<sysy::LivenessAnalysisPass>();
+    registerAnalysisPass<LoopAnalysisPass>();
 
     // 注册优化遍
     registerOptimizationPass<SysYDelInstAfterBrPass>();