Desugar %DefaultConstructorCallSuper partially in parser.

src/parser.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/parser.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/ast-literal-reindexer.h"
 #include "src/bailout-reason.h"
@@ skipping 341 matching lines @@
   ZoneList<Statement*>* body = NULL;
 
   {
     AstNodeFactory function_factory(ast_value_factory());
     FunctionState function_state(&function_state_, &scope_, function_scope,
                                  kind, &function_factory);
 
     body = new (zone()) ZoneList<Statement*>(call_super ? 2 : 1, zone());
     AddAssertIsConstruct(body, pos);
     if (call_super) {
-      // %_DefaultConstructorCallSuper(new.target, .this_function)
+      // %_DefaultConstructorCallSuper(new.target, %GetPrototype(<this-fun>))
       ZoneList<Expression*>* args =
           new (zone()) ZoneList<Expression*>(2, zone());
       VariableProxy* new_target_proxy = scope_->NewUnresolved(
           factory(), ast_value_factory()->new_target_string(), Variable::NORMAL,
           pos);
       args->Add(new_target_proxy, zone());
       VariableProxy* this_function_proxy = scope_->NewUnresolved(
           factory(), ast_value_factory()->this_function_string(),
           Variable::NORMAL, pos);
-      args->Add(this_function_proxy, zone());
+      ZoneList<Expression*>* tmp =
+          new (zone()) ZoneList<Expression*>(1, zone());
+      tmp->Add(this_function_proxy, zone());
+      Expression* get_prototype =
+          factory()->NewCallRuntime(Runtime::kGetPrototype, tmp, pos);
+      args->Add(get_prototype, zone());
       CallRuntime* call = factory()->NewCallRuntime(
           Runtime::kInlineDefaultConstructorCallSuper, args, pos);
       body->Add(factory()->NewReturnStatement(call, pos), zone());
     }
 
     materialized_literal_count = function_state.materialized_literal_count();
     expected_property_count = function_state.expected_property_count();
   }
 
   FunctionLiteral* function_literal = factory()->NewFunctionLiteral(
@@ skipping 5821 matching lines @@
 
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
   return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos);
 }
 }  // namespace internal
 }  // namespace v8