diff --git a/src/mapleall/maple_me/include/ssa_mir_nodes.h b/src/mapleall/maple_me/include/ssa_mir_nodes.h
index a8a42987420a3aaa2fa842d31c5cf79374f770c0..6bb9fc9eab4d09c1231cd1c5eef4c3b58ff97c39 100644
--- a/src/mapleall/maple_me/include/ssa_mir_nodes.h
+++ b/src/mapleall/maple_me/include/ssa_mir_nodes.h
@@ -488,6 +488,8 @@ class SSANode : public BaseNode {
     return *(GetSSAVar()->GetOst()->GetMIRSymbol());
   }
 
+  virtual BaseNode *GetNoSSANode() = 0;
+
  protected:
   VersionSt *ssaVar = nullptr;
 };
@@ -514,6 +516,11 @@ class AddrofSSANode : public SSANode {
   FieldID GetFieldID() const {
     return addrofNode->GetFieldID();
   }
+
+  BaseNode *GetNoSSANode() override {
+    return addrofNode;
+  }
+
  private:
   AddrofNode *addrofNode;
 };
@@ -547,6 +554,11 @@ class IreadSSANode : public SSANode {
   void SetOpnd(BaseNode *node, size_t i = 0) override {
     ireadNode->SetOpnd(node, i);
   }
+
+  BaseNode *GetNoSSANode() override {
+    return ireadNode;
+  }
+
  private:
   IreadNode *ireadNode;
 };
@@ -568,6 +580,11 @@ class RegreadSSANode : public SSANode {
   PregIdx GetRegIdx() const {
     return regreadNode->GetRegIdx();
   }
+
+  BaseNode *GetNoSSANode() override {
+    return regreadNode;
+  }
+
  private:
   RegreadNode *regreadNode;
 };
diff --git a/src/mapleall/maple_me/src/func_emit.cpp b/src/mapleall/maple_me/src/func_emit.cpp
index 6404100a72cd492767bf2602b4ee46f79ca43f05..72ee655528ee077b5aa6d660b71862c741e126d4 100644
--- a/src/mapleall/maple_me/src/func_emit.cpp
+++ b/src/mapleall/maple_me/src/func_emit.cpp
@@ -14,6 +14,7 @@
  */
 #include "func_emit.h"
 #include "mir_function.h"
+#include "ssa_mir_nodes.h"
 
 namespace maple {
 void FuncEmit::EmitLabelForBB(MIRFunction &func, BB &bb) const {
@@ -48,8 +49,23 @@ void FuncEmit::EmitLabelForBB(MIRFunction &func, BB &bb) const {
   }
 }
 
-static void ConvertMaydassign(BB &bb) {
+static BaseNode *ConvertSSANode(BaseNode *node) {
+  if (node->IsSSANode()) {
+    node = static_cast<SSANode *>(node)->GetNoSSANode();
+  }
+  if (node->IsLeaf()) {
+    return node;
+  }
+  for (uint32 opndId = 0; opndId < node->GetNumOpnds(); ++opndId) {
+    auto *retOpnd = ConvertSSANode(node->Opnd(opndId));
+    node->SetOpnd(retOpnd, opndId);
+  }
+  return node;
+}
+
+static void ConvertStmt(BB &bb) {
   for (auto &stmt : bb.GetStmtNodes()) {
+    ConvertSSANode(&stmt);
     if (stmt.GetOpCode() == OP_maydassign) {
       stmt.SetOpCode(OP_dassign);
     }
@@ -65,7 +81,7 @@ void FuncEmit::EmitBeforeHSSA(MIRFunction &func, const MapleVector<BB*> &bbList)
     if (bb == nullptr) {
       continue;
     }
-    ConvertMaydassign(*bb);
+    ConvertStmt(*bb);
     if (bb->GetBBLabel() != 0) {
       EmitLabelForBB(func, *bb);
     }