[Interpreter] Add support for new local function context creation.

src/interpreter/bytecodes.cc

Index: src/interpreter/bytecodes.cc
diff --git a/src/interpreter/bytecodes.cc b/src/interpreter/bytecodes.cc
index a50e39cc2f3f97b12d6162105b7cfafffeba2b83..7102e664d56d5a961d16e7ff7f13493dc9afa582 100644
--- a/src/interpreter/bytecodes.cc
+++ b/src/interpreter/bytecodes.cc
@@ -225,7 +225,11 @@ std::ostream& Bytecodes::Decode(std::ostream& os, const uint8_t* bytecode_start,
         break;
       case interpreter::OperandType::kReg8: {
         Register reg = Register::FromOperand(*operand_start);
-        if (reg.is_parameter()) {
+        if (reg.is_function_context()) {
+          os << "<context>";
+        } else if (reg.is_function_closure()) {
+          os << "<closure>";
+        } else if (reg.is_parameter()) {
           int parameter_index = reg.ToParameterIndex(parameter_count);
           if (parameter_index == 0) {
             os << "<this>";
@@ -266,6 +270,8 @@ std::ostream& operator<<(std::ostream& os, const OperandSize& operand_size) {
 
 static const int kLastParamRegisterIndex =
     -InterpreterFrameConstants::kLastParamFromRegisterPointer / kPointerSize;
+static const int kFunctionClosureRegisterIndex =
+    -InterpreterFrameConstants::kFunctionFromRegisterPointer / kPointerSize;
 static const int kFunctionContextRegisterIndex =
     -InterpreterFrameConstants::kContextFromRegisterPointer / kPointerSize;
 
@@ -293,6 +299,16 @@ int Register::ToParameterIndex(int parameter_count) const {
 }
 
 
+Register Register::function_closure() {
+  return Register(kFunctionClosureRegisterIndex);
+}
+
+
+bool Register::is_function_closure() const {
+  return index() == kFunctionClosureRegisterIndex;
+}
+
+
 Register Register::function_context() {
   return Register(kFunctionContextRegisterIndex);
 }