diff --git a/es2panda/binder/binder.cpp b/es2panda/binder/binder.cpp
index 47b85b99676b3303e32added1978fff7bf90f1c3..1c6f0022a76f4dedfab7b15aeb9d13e7f47fc929 100644
--- a/es2panda/binder/binder.cpp
+++ b/es2panda/binder/binder.cpp
@@ -609,6 +609,7 @@ void Binder::AddMandatoryParam(const std::string_view &name)
 
     auto &funcParams = scope_->AsFunctionVariableScope()->ParamScope()->Params();
     funcParams.insert(funcParams.begin(), param);
+    scope_->AsFunctionVariableScope()->ParamScope()->Bindings().insert({decl->Name(), param});
     scope_->AsFunctionVariableScope()->Bindings().insert({decl->Name(), param});
 }
 
diff --git a/es2panda/compiler/core/pandagen.cpp b/es2panda/compiler/core/pandagen.cpp
index 88a863f84f23b3fbf09436c1d599fd4fea1d0c86..3488d439f952da11a35264406b67230d14273577 100644
--- a/es2panda/compiler/core/pandagen.cpp
+++ b/es2panda/compiler/core/pandagen.cpp
@@ -1180,11 +1180,11 @@ void PandaGen::CallThis(const ir::AstNode *node, VReg startReg, size_t argCount)
         default: {
             int64_t actualArgs = argCount - 1;
             if (actualArgs <= util::Helpers::MAX_INT8) {
-                rra_.Emit<Callthisrange>(node, thisReg, argCount + 1, 0, actualArgs, thisReg);
+                rra_.Emit<Callthisrange>(node, thisReg, argCount, 0, actualArgs, thisReg);
                 break;
             }
 
-            rra_.Emit<WideCallthisrange>(node, thisReg, argCount + 1, actualArgs, thisReg);
+            rra_.Emit<WideCallthisrange>(node, thisReg, argCount, actualArgs, thisReg);
             break;
         }
     }
diff --git a/es2panda/compiler/core/regAllocator.cpp b/es2panda/compiler/core/regAllocator.cpp
index 7e9ce2ca7268ae0afc3ad16cda4b9b2ad95d2ad8..88613e85bda2794fe3c0fab2a1fc1fefdbf5267b 100644
--- a/es2panda/compiler/core/regAllocator.cpp
+++ b/es2panda/compiler/core/regAllocator.cpp
@@ -89,6 +89,11 @@ void RegAllocatorBase::Restore(IRNode *ins)
     Add<Mov>(ins->Node(), spillReg, origin);
 }
 
+void RegAllocatorBase::ClearSpillMap()
+{
+    spillMap_.clear();
+}
+
 // RegAllocator
 
 void RegAllocator::Run(IRNode *ins)
@@ -122,7 +127,7 @@ void RegAllocator::Run(IRNode *ins)
         Restore(ins);
     }
 
-    spillMap_.clear();
+    ClearSpillMap();
 }
 
 void RegAllocator::Run(IRNode *ins, int64_t typeIndex)
@@ -176,6 +181,8 @@ void RangeRegAllocator::Run(IRNode *ins, VReg rangeStart, size_t argCount)
     while (spillIndex_ != 0) {
         Restore(ins);
     }
+
+    ClearSpillMap();
 }
 
 }  // namespace panda::es2panda::compiler
diff --git a/es2panda/compiler/core/regAllocator.h b/es2panda/compiler/core/regAllocator.h
index dd00e365b7b4cffee4f21338bd1492b8b283d28b..bd1bb17fa87ad60a5ffa29ccceba83cb3eced954 100644
--- a/es2panda/compiler/core/regAllocator.h
+++ b/es2panda/compiler/core/regAllocator.h
@@ -151,6 +151,7 @@ protected:
 
     VReg Spill(IRNode *ins, VReg reg);
     void Restore(IRNode *ins);
+    void ClearSpillMap();
 
     VReg spillIndex_ {0};
     VReg regEnd_ {0};
diff --git a/es2panda/test/compiler/js/parameter/parameter-with-default-value-1-expected.txt b/es2panda/test/compiler/js/parameter/parameter-with-default-value-1-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1191247b6d9a206f6ba3d8ac79e26d041dd86941
--- /dev/null
+++ b/es2panda/test/compiler/js/parameter/parameter-with-default-value-1-expected.txt
@@ -0,0 +1,2 @@
+1
+2
diff --git a/es2panda/test/compiler/js/parameter/parameter-with-default-value-1.js b/es2panda/test/compiler/js/parameter/parameter-with-default-value-1.js
new file mode 100644
index 0000000000000000000000000000000000000000..e749bcbacdebb822b1d06dfb475dfb2e43bcf684
--- /dev/null
+++ b/es2panda/test/compiler/js/parameter/parameter-with-default-value-1.js
@@ -0,0 +1,13 @@
+class A {
+    constructor(param) {
+        this.c = param;
+    }
+
+    a(b = this.c) {
+        print(b);
+    }
+}
+
+let aa = new A(1);
+aa.a();
+aa.a(2);
diff --git a/es2panda/test/compiler/js/regAllocator/test-spill-fill-2-expected.txt b/es2panda/test/compiler/js/regAllocator/test-spill-fill-2-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..190a18037c64c43e6b11489df4bf0b9eb6d2c9bf
--- /dev/null
+++ b/es2panda/test/compiler/js/regAllocator/test-spill-fill-2-expected.txt
@@ -0,0 +1 @@
+123
diff --git a/es2panda/test/compiler/js/regAllocator/test-spill-fill-2.js b/es2panda/test/compiler/js/regAllocator/test-spill-fill-2.js
new file mode 100644
index 0000000000000000000000000000000000000000..66a845537c907468e091a5447e159e846ed82e1e
--- /dev/null
+++ b/es2panda/test/compiler/js/regAllocator/test-spill-fill-2.js
@@ -0,0 +1,267 @@
+function xx() {
+    let a = undefined;
+    let aa = undefined;
+    let aaa = undefined;
+    let aaaa = undefined;
+    let aaaaa = undefined;
+    let aaaaaa = undefined;
+    let aaaaaaa = undefined;
+    let aaaaaaaa = undefined;
+    let b = undefined;
+    let bb = undefined;
+    let bbb = undefined;
+    let aaabab = undefined;
+    let aaaabab = undefined;
+    let aaaabaab = undefined;
+    let aaaaabaab = undefined;
+    let aaaaaabaab = undefined;
+    let ab = undefined;
+    let aba = undefined;
+    let abaa = undefined;
+    let abaaa = undefined;
+    let abaaaa = undefined;
+    let aabaaaa = undefined;
+    let aabaaaaa = undefined;
+    let aaabaaaaa = undefined;
+    let bbbbb = undefined;
+    let bbbbbb = undefined;
+    let bbbb = undefined;
+    let aaaba = undefined;
+    let aaaaba = undefined;
+    let aaaabaa = undefined;
+    let aaaaabaa = undefined;
+    let aaaaaabaa = undefined;
+    let c = undefined;
+    let ac = undefined;
+    let aac = undefined;
+    let aaac = undefined;
+    let aaaac = undefined;
+    let aaaaac = undefined;
+    let aaaaaac = undefined;
+    let aaaaaaac = undefined;
+    let aaaaaaaca = undefined;
+    let bc = undefined;
+    let bbc = undefined;
+    let bbbc = undefined;
+    let aaabcab = undefined;
+    let aaaababc = undefined;
+    let aaaabaabc = undefined;
+    let aaaaabaabc = undefined;
+    let aaaaaabaabc = undefined;
+    let abc = undefined;
+    let abca = undefined;
+    let abcaa = undefined;
+    let abacaa = undefined;
+    let abacaaa = undefined;
+    let aabaacaa = undefined;
+    let aabaacaaa = undefined;
+    let aaabcaaaaa = undefined;
+    let bbbbcb = undefined;
+    let bbbbcbb = undefined;
+    let bbbcb = undefined;
+    let aacaba = undefined;
+    let aaaabca = undefined;
+    let aaaacbaa = undefined;
+    let aaaaabcaa = undefined;
+    let aaaaacabaa = undefined;
+    let add = undefined;
+    let aadd = undefined;
+    let aaadd = undefined;
+    let aaaadd = undefined;
+    let aaaaadd = undefined;
+    let aaaaaadd = undefined;
+    let aaaaaadda = undefined;
+    let aaaaaaadda = undefined;
+    let bdd = undefined;
+    let bbdd = undefined;
+    let bbbdd = undefined;
+    let aaababdd = undefined;
+    let aaaabddab = undefined;
+    let aaaabddaab = undefined;
+    let aaaaaddbaab = undefined;
+    let aaaaaabddaab = undefined;
+    let ddab = undefined;
+    let abdda = undefined;
+    let abadda = undefined;
+    let abaddaa = undefined;
+    let abaaddaa = undefined;
+    let aabaaddaa = undefined;
+    let aabaaaddaa = undefined;
+    let aaabaaaddaa = undefined;
+    let bbbddbb = undefined;
+    let bbbddbbb = undefined;
+    let bbddbb = undefined;
+    let aaaddba = undefined;
+    let aaaddaba = undefined;
+    let aaaabaadd = undefined;
+    let aaaaabaadd = undefined;
+    let aaaaaabaadd = undefined;
+    let cdd = undefined;
+    let acdd = undefined;
+    let aacdd = undefined;
+    let aaacdd = undefined;
+    let aaaacddd = undefined;
+    let aaaaacddd = undefined;
+    let aaaaaacddd = undefined;
+    let aaaaaaacdd = undefined;
+    let aaaaaaacadd = undefined;
+    let bcdd = undefined;
+    let bbcdd = undefined;
+    let bbbcdd = undefined;
+    let aaabcabdd = undefined;
+    let aaaababcdd = undefined;
+    let aaaabaabcdd = undefined;
+    let aaaaabaabcdd = undefined;
+    let aaaaaabaabcdd = undefined;
+    let abcdd = undefined;
+    let abcdda = undefined;
+    let abcaddda = undefined;
+    let abacaddda = undefined;
+    let abacaadda = undefined;
+    let aabaacddaa = undefined;
+    let aabaacaaadd = undefined;
+    let aaabcaaaaadd = undefined;
+    let bbbbcbdd = undefined;
+    let bbbbcbbdd = undefined;
+    let bbbcbdd = undefined;
+    let aacabdda = undefined;
+    let aaaabcadd = undefined;
+    let aaaacbadda = undefined;
+    let aaaaabcaadd = undefined;
+    let aaaaacabddaa = undefined;
+    let ae = undefined;
+    let aaee = undefined;
+    let aaaee = undefined;
+    let aaaae = undefined;
+    let aaaaea = undefined;
+    let aaaaaea = undefined;
+    let aaaaaeaa = undefined;
+    let aaaaaaeaa = undefined;
+    let be = undefined;
+    let bbe = undefined;
+    let bbeb = undefined;
+    let aaabeab = undefined;
+    let aaaaebab = undefined;
+    let aaaabaeab = undefined;
+    let aaaaaebaab = undefined;
+    let aaaaaaebaab = undefined;
+    let abe = undefined;
+    let aeba = undefined;
+    let abeaa = undefined;
+    let abaeaa = undefined;
+    let abaeaaa = undefined;
+    let aabaeaaa = undefined;
+    let aabaaeaaa = undefined;
+    let aaabeaaaaa = undefined;
+    let bbbbeb = undefined;
+    let bbbbebb = undefined;
+    let bbbeb = undefined;
+    let aaaeba = undefined;
+    let aaaeaba = undefined;
+    let aaaeabaa = undefined;
+    let aaaeaabaa = undefined;
+    let aaaaeaabaa = undefined;
+    let ce = undefined;
+    let aec = undefined;
+    let aaec = undefined;
+    let aaaec = undefined;
+    let aaaeac = undefined;
+    let aaaaeac = undefined;
+    let aaaaeaac = undefined;
+    let aaaaaeaac = undefined;
+    let aaaaaeaaca = undefined;
+    let bce = undefined;
+    let bbce = undefined;
+    let bbbec = undefined;
+    let aaabceab = undefined;
+    let aaaabaebc = undefined;
+    let aaaabaeabc = undefined;
+    let aaaaabaeabc = undefined;
+    let aaaaaabeaabc = undefined;
+    let abce = undefined;
+    let abcea = undefined;
+    let abcaea = undefined;
+    let abacaea = undefined;
+    let abacaeaa = undefined;
+    let aabaeacaa = undefined;
+    let aabaaceaaa = undefined;
+    let aaabcaaeaaa = undefined;
+    let bbbbecb = undefined;
+    let bbbbcbeb = undefined;
+    let bbbceb = undefined;
+    let aacaeba = undefined;
+    let aaaaebca = undefined;
+    let aaaacbaea = undefined;
+    let aaaaabecaa = undefined;
+    let aaaaaceabaa = undefined;
+    let adde = undefined;
+    let aaded = undefined;
+    let aaaedd = undefined;
+    let aaaaedd = undefined;
+    let aaaaeadd = undefined;
+    let aaaaeaadd = undefined;
+    let aaaaaeadda = undefined;
+    let aaaaaaeadda = undefined;
+    let bded = undefined;
+    let bbedd = undefined;
+    let bbbded = undefined;
+    let aaababedd = undefined;
+    let aaaabdedab = undefined;
+    let aaaabddaeab = undefined;
+    let aaaaaeddbaab = undefined;
+    let aaaaaabeddaab = undefined;
+    let ddabe = undefined;
+    let abdeda = undefined;
+    let abadeda = undefined;
+    let abadedaa = undefined;
+    let abaaddeaa = undefined;
+    let aabaadedaa = undefined;
+    let aabaaaeddaa = undefined;
+    let aaabaaadedaa = undefined;
+    let bbbddebb = undefined;
+    let bbbddbebb = undefined;
+    let bbddebb = undefined;
+    let aaaddeba = undefined;
+    let aaaddaeba = undefined;
+    let aaaabeaadd = undefined;
+    let aaaaabaeadd = undefined;
+    let aaaaaabaeadd = undefined;
+    let cdde = undefined;
+    let acdde = undefined;
+    let aacdde = undefined;
+    let aaacdde = undefined;
+    let aaaacdded = undefined;
+    let aaaaacdded = undefined;
+    let aaaaaacdded = undefined;
+    let aaaaaaacdde = undefined;
+    let aaaaaaacadde = undefined;
+    let bcedd = undefined;
+    let bbcedd = undefined;
+    let bbbcedd = undefined;
+    let aaabceabdd = undefined;
+    let aaaabaebcdd = undefined;
+    let aaaabaaebcdd = undefined;
+    let aaaaabaaebcdd = undefined;
+    let aaaaaabaaebcdd = undefined;
+    let abcdde = undefined;
+    let abcddae = undefined;
+    let abcadddea = undefined;
+    let abacadddea = undefined;
+    let abacaaddae = undefined;
+    let aabaacddaae = undefined;
+    let aabaacaaadde = undefined;
+    let aaabcaaaaadde = undefined;
+    let bbbbcbdde = undefined;
+    let bbbbcbbdde = undefined;
+    let bbbcbdde = undefined;
+    let aacabddae = undefined;
+    let aaaabcadde = undefined;
+    let aaaacbaddae = undefined;
+    let aaaaabcaadde = undefined;
+    let aaaaacabddaae = {a: function b(c) {
+        print(c);
+    }};
+    aaaaacabddaae.a(123);
+}
+
+xx();