diff --git a/src/Mem2Reg.cpp b/src/Mem2Reg.cpp
index 968e4f3..bf7e541 100644
--- a/src/Mem2Reg.cpp
+++ b/src/Mem2Reg.cpp
@@ -745,11 +745,10 @@ auto Mem2Reg::renameAll() -> void {
  */
 auto Mem2Reg::mem2regPipeline() -> void {
   // 首先进行mem2reg的前置分析
-  controlFlowAnalysis = new ControlFlowAnalysis(pModule);
-  activeVarAnalysis = new ActiveVarAnalysis();
-  // 控制流分析
+  controlFlowAnalysis->clear();
   controlFlowAnalysis->runControlFlowAnalysis();
   // 活跃变量分析
+  activeVarAnalysis->clear();
   dataFlowAnalysisUtils.addBackwardAnalyzer(activeVarAnalysis);
   dataFlowAnalysisUtils.backwardAnalyze(pModule);
 
diff --git a/src/include/Mem2Reg.h b/src/include/Mem2Reg.h
index f3b54ff..0004708 100644
--- a/src/include/Mem2Reg.h
+++ b/src/include/Mem2Reg.h
@@ -17,13 +17,14 @@ class Mem2Reg {
 private:
   Module *pModule;
   IRBuilder *pBuilder;
-  ActiveVarAnalysis *activeVarAnalysis;  // 活跃变量分析
   ControlFlowAnalysis *controlFlowAnalysis;  // 控制流分析
+  ActiveVarAnalysis *activeVarAnalysis;  // 活跃变量分析
   DataFlowAnalysisUtils dataFlowAnalysisUtils;
 
 public:
-  Mem2Reg(Module *pMoudle, IRBuilder *pBuilder) : 
-    pModule(pMoudle), pBuilder(pBuilder), activeVarAnalysis(nullptr), controlFlowAnalysis(nullptr), dataFlowAnalysisUtils()
+  Mem2Reg(Module *pMoudle, IRBuilder *pBuilder, 
+          ControlFlowAnalysis *pCFA = nullptr, ActiveVarAnalysis *pAVA = nullptr) :
+    pModule(pMoudle), pBuilder(pBuilder), controlFlowAnalysis(pCFA), activeVarAnalysis(pAVA), dataFlowAnalysisUtils()
    {}  // 初始化函数
 
   void mem2regPipeline();  ///< mem2reg