Use new.target in favor of %_IsConstructCall intrinsic (2).

src/js/v8natives.js

 // 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.
 
 (function(global, utils) {
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
@@ skipping 1272 matching lines @@
   // in object-observe.js.
 ]);
 
 
 // ----------------------------------------------------------------------------
 // Boolean
 
 function BooleanConstructor(x) {
   // TODO(bmeurer): Move this to toplevel.
   "use strict";
-  if (%_IsConstructCall()) {
+  if (!IS_UNDEFINED(new.target)) {
     %_SetValueOf(this, TO_BOOLEAN(x));
   } else {
     return TO_BOOLEAN(x);
   }
 }
 
 
 function BooleanToString() {
   // NOTE: Both Boolean objects and values can enter here as
   // 'this'. This is not as dictated by ECMA-262.
@@ skipping 305 matching lines @@
 
 // ES5 15.3.4.5
 function FunctionBind(this_arg) { // Length is 1.
   if (!IS_CALLABLE(this)) throw MakeTypeError(kFunctionBind);
 
   var boundFunction = function () {
     // Poison .arguments and .caller, but is otherwise not detectable.
     "use strict";
     // This function must not use any object literals (Object, Array, RegExp),
     // since the literals-array is being used to store the bound data.
-    if (%_IsConstructCall()) {
+    if (!IS_UNDEFINED(new.target)) {
       return %NewObjectFromBound(boundFunction);
     }
     var bindings = %BoundFunctionGetBindings(boundFunction);
 
     var argc = %_ArgumentsLength();
     if (argc == 0) {
       return %Apply(bindings[0], bindings[1], bindings, 2, bindings.length - 2);
     }
     if (bindings.length === 2) {
       return %Apply(bindings[0], bindings[1], arguments, 0, argc);
@@ skipping 132 matching lines @@
 
 %InstallToContext([
   "global_eval_fun", GlobalEval,
   "object_value_of", ObjectValueOf,
   "object_to_string", ObjectToString,
   "object_get_own_property_descriptor", ObjectGetOwnPropertyDescriptor,
   "to_complete_property_descriptor", ToCompletePropertyDescriptor,
 ]);
 
 })