diff --git a/src/mapleall/maple_ir/include/mir_builder.h b/src/mapleall/maple_ir/include/mir_builder.h
index be6e53c06e1be2351c7251979f30d4cad3b8e474..1cc176d6722cc0d94207f7ae7cf08e20d088560d 100644
--- a/src/mapleall/maple_ir/include/mir_builder.h
+++ b/src/mapleall/maple_ir/include/mir_builder.h
@@ -149,6 +149,7 @@ class MIRBuilder {
                               MIRStorageClass sc = kScGlobal);
   MIRSymbol *GetOrCreateDeclInFunc(const std::string &str, const MIRType &type, MIRFunction &func);
   // for creating Expression
+  ConstvalNode *CreateConstval(MIRConst *constVal);
   ConstvalNode *CreateIntConst(int64, PrimType);
   ConstvalNode *CreateFloatConst(float val);
   ConstvalNode *CreateDoubleConst(double val);
@@ -285,6 +286,7 @@ class MIRBuilder {
   AddrofNode *CreateDread(const MIRSymbol &st, PrimType pty);
   virtual MemPool *GetCurrentFuncCodeMp();
   virtual MapleAllocator *GetCurrentFuncCodeMpAllocator();
+  virtual MemPool *GetCurrentFuncDataMp();
 
   virtual void GlobalLock() {}
   virtual void GlobalUnlock() {}
diff --git a/src/mapleall/maple_ir/src/mir_builder.cpp b/src/mapleall/maple_ir/src/mir_builder.cpp
index b6f232a3a4261cae95954c2b7255edb951b6f203..67da936926b92a4274391caa78cf8d54535660ab 100644
--- a/src/mapleall/maple_ir/src/mir_builder.cpp
+++ b/src/mapleall/maple_ir/src/mir_builder.cpp
@@ -468,6 +468,10 @@ MIRSymbol *MIRBuilder::CreatePregFormalSymbol(TyIdx tyIdx, PregIdx pRegIdx, MIRF
   return MIRSymbolBuilder::Instance().CreatePregFormalSymbol(tyIdx, pRegIdx, func);
 }
 
+ConstvalNode *MIRBuilder::CreateConstval(MIRConst *mirConst) {
+  return GetCurrentFuncCodeMp()->New<ConstvalNode>(mirConst->GetType().GetPrimType(), mirConst);
+}
+
 ConstvalNode *MIRBuilder::CreateIntConst(int64 val, PrimType pty) {
   auto *mirConst =
       GlobalTables::GetIntConstTable().GetOrCreateIntConst(val, *GlobalTables::GetTypeTable().GetPrimType(pty));
@@ -475,22 +479,19 @@ ConstvalNode *MIRBuilder::CreateIntConst(int64 val, PrimType pty) {
 }
 
 ConstvalNode *MIRBuilder::CreateFloatConst(float val) {
-  MIRFunction *currentFunctionInner = GetCurrentFunctionNotNull();
-  auto *mirConst = currentFunctionInner->GetDataMemPool()->New<MIRFloatConst>(
+  auto *mirConst = GetCurrentFuncDataMp()->New<MIRFloatConst>(
       val, *GlobalTables::GetTypeTable().GetPrimType(PTY_f32));
   return GetCurrentFuncCodeMp()->New<ConstvalNode>(PTY_f32, mirConst);
 }
 
 ConstvalNode *MIRBuilder::CreateDoubleConst(double val) {
-  MIRFunction *currentFunctionInner = GetCurrentFunctionNotNull();
-  auto *mirConst = currentFunctionInner->GetDataMemPool()->New<MIRDoubleConst>(
+  auto *mirConst = GetCurrentFuncDataMp()->New<MIRDoubleConst>(
       val, *GlobalTables::GetTypeTable().GetPrimType(PTY_f64));
   return GetCurrentFuncCodeMp()->New<ConstvalNode>(PTY_f64, mirConst);
 }
 
 ConstvalNode *MIRBuilder::CreateFloat128Const(const uint64 *val) {
-  MIRFunction *currentFunctionInner = GetCurrentFunctionNotNull();
-  auto *mirConst = currentFunctionInner->GetDataMemPool()->New<MIRFloat128Const>(
+  auto *mirConst = GetCurrentFuncDataMp()->New<MIRFloat128Const>(
       *val, *GlobalTables::GetTypeTable().GetPrimType(PTY_f128));
   return GetCurrentFuncCodeMp()->New<ConstvalNode>(PTY_f128, mirConst);
 }
@@ -1011,11 +1012,24 @@ void MIRBuilder::AddStmtInCurrentFunctionBody(StmtNode &stmt) {
 }
 
 MemPool *MIRBuilder::GetCurrentFuncCodeMp() {
-  return mirModule->CurFuncCodeMemPool();
+  if (MIRFunction *curFunction = GetCurrentFunction()) {
+    return curFunction->GetCodeMemPool();
+  }
+  return mirModule->GetMemPool();
 }
 
 MapleAllocator *MIRBuilder::GetCurrentFuncCodeMpAllocator() {
-  return mirModule->CurFuncCodeMemPoolAllocator();
+  if (MIRFunction *curFunction = GetCurrentFunction()) {
+    return &curFunction->GetCodeMPAllocator();
+  }
+  return &mirModule->GetMPAllocator();
+}
+
+MemPool *MIRBuilder::GetCurrentFuncDataMp() {
+  if (MIRFunction *curFunction = GetCurrentFunction()) {
+    return curFunction->GetDataMemPool();
+  }
+  return mirModule->GetMemPool();
 }
 
 MIRBuilderExt::MIRBuilderExt(MIRModule *module, pthread_mutex_t *mutex) : MIRBuilder(module), mutex(mutex) {}