diff --git a/src/mapleall/maple_be/include/cg/aarch64/aarch64_insn.h b/src/mapleall/maple_be/include/cg/aarch64/aarch64_insn.h
index 6b6b0b5a4d34435d21d02f25112c7b2fa8c4f751..2b44aeb30e03fdd1f3a7e1f2ddba0174b4810ca1 100644
--- a/src/mapleall/maple_be/include/cg/aarch64/aarch64_insn.h
+++ b/src/mapleall/maple_be/include/cg/aarch64/aarch64_insn.h
@@ -222,6 +222,21 @@ class AArch64VectorInsn : public AArch64Insn {
     return ret;
   }
 
+  int GetNumOfRegSpec() const {
+    if (IsVectorOp() && !regSpecList.empty()) {
+      return regSpecList.size();
+    }
+    return 0;
+  }
+
+  MapleVector<VectorRegSpec*> &GetRegSpecList() {
+    return regSpecList;
+  }
+
+  void SetRegSpecList(MapleVector<VectorRegSpec*> &vec) {
+    regSpecList = vec;
+  }
+
   void PushRegSpecEntry(VectorRegSpec *v) {
     regSpecList.emplace(regSpecList.begin(), v); /* add at front  */
   }
diff --git a/src/mapleall/maple_be/src/cg/aarch64/aarch64_insn.cpp b/src/mapleall/maple_be/src/cg/aarch64/aarch64_insn.cpp
index af84671c3c42a1503d9c50770492436943b8c0a8..ce95a257ebc3dbce95f5f6a8b7d28b64c98c3a57 100644
--- a/src/mapleall/maple_be/src/cg/aarch64/aarch64_insn.cpp
+++ b/src/mapleall/maple_be/src/cg/aarch64/aarch64_insn.cpp
@@ -1830,6 +1830,13 @@ void AArch64Insn::Dump() const {
     opnd.Dump();
     LogInfo::MapleLogger() << ")";
   }
+
+  if (IsVectorOp()) {
+    const AArch64VectorInsn *vInsn = static_cast<const AArch64VectorInsn*>(this);
+    if (vInsn->GetNumOfRegSpec() != 0) {
+      LogInfo::MapleLogger() << " (vecSpec: " << vInsn->GetNumOfRegSpec() << ")";
+    }
+  }
   LogInfo::MapleLogger() << "\n";
 }
 
diff --git a/src/mapleall/maple_be/src/cg/aarch64/aarch64_optimize_common.cpp b/src/mapleall/maple_be/src/cg/aarch64/aarch64_optimize_common.cpp
index b219063de0256cfb38ff35f4d9e1c3bfc89b921e..7ae00b38be1a91a34dc3e9154730c798086f9ab3 100644
--- a/src/mapleall/maple_be/src/cg/aarch64/aarch64_optimize_common.cpp
+++ b/src/mapleall/maple_be/src/cg/aarch64/aarch64_optimize_common.cpp
@@ -57,7 +57,13 @@ void AArch64InsnVisitor::ModifyJumpTarget(BB &newTarget, BB &bb) {
 Insn *AArch64InsnVisitor::CloneInsn(Insn &originalInsn) {
   MemPool *memPool = const_cast<MemPool*>(CG::GetCurCGFunc()->GetMemoryPool());
   if (originalInsn.IsTargetInsn()) {
-    return memPool->Clone<AArch64Insn>(*static_cast<AArch64Insn*>(&originalInsn));
+    if (!originalInsn.IsVectorOp()) {
+      return memPool->Clone<AArch64Insn>(*static_cast<AArch64Insn*>(&originalInsn));
+    } else {
+      AArch64VectorInsn *insn = memPool->Clone<AArch64VectorInsn>(*static_cast<AArch64VectorInsn*>(&originalInsn));
+      insn->SetRegSpecList(static_cast<AArch64VectorInsn&>(originalInsn).GetRegSpecList());
+      return insn;
+    }
   } else if (originalInsn.IsCfiInsn()) {
     return memPool->Clone<cfi::CfiInsn>(*static_cast<cfi::CfiInsn*>(&originalInsn));
   } else if (originalInsn.IsDbgInsn()) {