diff --git a/es2panda/compiler/core/function.cpp b/es2panda/compiler/core/function.cpp
index b51e0521b0efb3693c04da2619154d35e0f320e6..57676ef6233872ae4ebccd027f7b95a0f478d04d 100644
--- a/es2panda/compiler/core/function.cpp
+++ b/es2panda/compiler/core/function.cpp
@@ -215,7 +215,6 @@ static void CompileFunction(PandaGen *pg)
         const auto *classDef = util::Helpers::GetClassDefiniton(decl);
         if (classDef->Super() == nullptr && classDef->NeedInstanceInitializer()) {
             RegScope rs(pg);
-            auto callee = pg->AllocReg();
             auto thisReg = pg->AllocReg();
 
             pg->GetThis(decl);
@@ -223,9 +222,7 @@ static void CompileFunction(PandaGen *pg)
 
             auto [level, slot] = pg->Scope()->Find(classDef->InstanceInitializer()->Key());
             pg->LoadLexicalVar(decl, level, slot);
-            pg->StoreAccumulator(decl, callee);
-
-            pg->CallThis(decl, callee, 1);
+            pg->CallInit(decl, thisReg);
         }
     }
 
diff --git a/es2panda/compiler/core/pandagen.cpp b/es2panda/compiler/core/pandagen.cpp
index 5f7527ddbce7c3c9aac4a3b611d506c5efab882b..b2cb94055d80c7e48e5568e82cf2ff8c2a44cb17 100644
--- a/es2panda/compiler/core/pandagen.cpp
+++ b/es2panda/compiler/core/pandagen.cpp
@@ -475,7 +475,7 @@ void PandaGen::DefineClassField(const ir::AstNode *node, VReg obj, const Operand
 
 void PandaGen::DefineClassPrivateField(const ir::AstNode *node, uint32_t level, uint32_t slot, VReg obj)
 {
-    ra_.Emit<CallruntimeDefineprivateproperty>(node, level, slot, obj);
+    ra_.Emit<CallruntimeDefineprivateproperty>(node, 0, level, slot, obj);
 }
 
 void PandaGen::StoreOwnProperty(const ir::AstNode *node, VReg obj, const Operand &prop, bool nameSetting)
@@ -577,7 +577,7 @@ void PandaGen::StoreObjByName(const ir::AstNode *node, VReg obj, const util::Str
 
 void PandaGen::DefineFieldByName(const ir::AstNode *node, VReg obj, const util::StringView &prop)
 {
-    ra_.Emit<CallruntimeDefinefieldbyname>(node, prop, obj);
+    ra_.Emit<Definefieldbyname>(node, 0, prop, obj);
     strings_.insert(prop);
 }
 
@@ -614,12 +614,12 @@ void PandaGen::StoreObjByIndex(const ir::AstNode *node, VReg obj, int64_t index)
 
 void PandaGen::DefineFieldByValue(const ir::AstNode *node, VReg obj, VReg prop)
 {
-    ra_.Emit<CallruntimeDefinefieldbyvalue>(node, prop, obj);
+    ra_.Emit<CallruntimeDefinefieldbyvalue>(node, 0, prop, obj);
 }
 
 void PandaGen::DefineFieldByIndex(const ir::AstNode *node, VReg obj, int64_t index)
 {
-    ra_.Emit<CallruntimeDefinefieldbyindex>(node, index, obj);
+    ra_.Emit<CallruntimeDefinefieldbyindex>(node, 0, index, obj);
 }
 
 void PandaGen::StOwnByName(const ir::AstNode *node, VReg obj, const util::StringView &prop, bool nameSetting)
@@ -1357,6 +1357,12 @@ void PandaGen::NotifyConcurrentResult(const ir::AstNode *node)
     }
 }
 
+void PandaGen::CallInit(const ir::AstNode *node, VReg thisReg)
+{
+    // callee is in acc
+    ra_.Emit<CallruntimeCallinit>(node, 0, thisReg);
+}
+
 void PandaGen::NewObject(const ir::AstNode *node, VReg startReg, size_t argCount)
 {
     if (argCount <= util::Helpers::MAX_INT8) {
diff --git a/es2panda/compiler/core/pandagen.h b/es2panda/compiler/core/pandagen.h
index 7d76bda3acfe83e49885c57e1f9228e719160544..f8028ba21c65774bf63842d007876ee70ebb8b43 100644
--- a/es2panda/compiler/core/pandagen.h
+++ b/es2panda/compiler/core/pandagen.h
@@ -378,6 +378,7 @@ public:
     void SuperCall(const ir::AstNode *node, VReg startReg, size_t argCount);
     void SuperCallSpread(const ir::AstNode *node, VReg vs);
     void NotifyConcurrentResult(const ir::AstNode *node);
+    void CallInit(const ir::AstNode *node, VReg thisReg);
 
     void NewObject(const ir::AstNode *node, VReg startReg, size_t argCount);
     void DefineFunction(const ir::AstNode *node, const ir::ScriptFunction *realNode, const util::StringView &name);
diff --git a/es2panda/ir/expressions/callExpression.cpp b/es2panda/ir/expressions/callExpression.cpp
index e09d1f989a81031abb887059074654208d4646fc..0956850bfca8c928745a350df25ba39bc51f39cd 100644
--- a/es2panda/ir/expressions/callExpression.cpp
+++ b/es2panda/ir/expressions/callExpression.cpp
@@ -124,16 +124,13 @@ void CallExpression::Compile(compiler::PandaGen *pg) const
 
         const auto *classDef = util::Helpers::GetClassDefiniton(util::Helpers::GetContainingConstructor(this));
         if (classDef->NeedInstanceInitializer()) {
-            auto callee = pg->AllocReg();
             auto thisReg = pg->AllocReg();
+            pg->MoveVreg(this, thisReg, newThis);
 
             auto [level, slot] = pg->Scope()->Find(classDef->InstanceInitializer()->Key());
             pg->LoadLexicalVar(this, level, slot);
-            pg->StoreAccumulator(this, callee);
-
-            pg->MoveVreg(this, thisReg, newThis);
 
-            pg->CallThis(this, callee, 1);
+            pg->CallInit(this, thisReg);
         }
         return;
     }