[interpreter] Support for ES6 super keyword.

src/interpreter/interpreter.cc

 // Copyright 2015 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/interpreter/interpreter.h"
 
 #include "src/ast/prettyprinter.h"
 #include "src/code-factory.h"
 #include "src/compiler.h"
 #include "src/factory.h"
@@ skipping 1148 matching lines @@
 // CallJSRuntimeWide <context_index> <receiver> <arg_count>
 //
 // Call the JS runtime function that has the |context_index| with the receiver
 // in register |receiver| and |arg_count| arguments in subsequent registers.
 void Interpreter::DoCallJSRuntimeWide(InterpreterAssembler* assembler) {
   DoCallJSRuntimeCommon(assembler);
 }
 
 void Interpreter::DoCallConstruct(InterpreterAssembler* assembler) {
   Callable ic = CodeFactory::InterpreterPushArgsAndConstruct(isolate_);
+  Node* new_target = __ GetAccumulator();
   Node* constructor_reg = __ BytecodeOperandReg(0);
   Node* constructor = __ LoadRegister(constructor_reg);
   Node* first_arg_reg = __ BytecodeOperandReg(1);
   Node* first_arg = __ RegisterLocation(first_arg_reg);
   Node* args_count = __ BytecodeOperandCount(2);
   Node* context = __ GetContext();
-  Node* result = __ CallConstruct(constructor, context, constructor, first_arg,
-                                  args_count);
+  Node* result =
+      __ CallConstruct(constructor, context, new_target, first_arg, args_count);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 
 // New <constructor> <first_arg> <arg_count>
 //
 // Call operator new with |constructor| and the first argument in
 // register |first_arg| and |arg_count| arguments in subsequent
+// registers. The new.target is in the accumulator.
 //
 void Interpreter::DoNew(InterpreterAssembler* assembler) {
   DoCallConstruct(assembler);
 }
 
 
 // NewWide <constructor> <first_arg> <arg_count>
 //
 // Call operator new with |constructor| and the first argument in
 // register |first_arg| and |arg_count| arguments in subsequent
+// registers. The new.target is in the accumulator.
 //
 void Interpreter::DoNewWide(InterpreterAssembler* assembler) {
   DoCallConstruct(assembler);
 }
 
 
 // TestEqual <src>
 //
 // Test if the value in the <src> register equals the accumulator.
 void Interpreter::DoTestEqual(InterpreterAssembler* assembler) {
@@ skipping 681 matching lines @@
   Node* index = __ LoadRegister(index_reg);
   Node* context = __ GetContext();
   Node* result = __ CallRuntime(Runtime::kForInStep, context, index);
   __ SetAccumulator(result);
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8