Introduce a BuiltinsConstructStub that sets up new.target and does a [[call]] per ES6 9.3.2

src/js/typedarray.js

 // Copyright 2013 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) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 747 matching lines @@
     "toString", TypedArrayToString,
     "toLocaleString", TypedArrayToLocaleString
   ]);
 endmacro
 
 TYPED_ARRAYS(SETUP_TYPED_ARRAY)
 
 // --------------------------- DataView -----------------------------
 
 function DataViewConstructor(buffer, byteOffset, byteLength) { // length = 3
-  if (%_IsConstructCall()) {
-    // TODO(binji): support SharedArrayBuffers?
-    if (!IS_ARRAYBUFFER(buffer)) throw MakeTypeError(kDataViewNotArrayBuffer);
-    if (!IS_UNDEFINED(byteOffset)) {
-      byteOffset = ToPositiveInteger(byteOffset, kInvalidDataViewOffset);
-    }
-    if (!IS_UNDEFINED(byteLength)) {
-      byteLength = TO_INTEGER(byteLength);
-    }
-
-    var bufferByteLength = %_ArrayBufferGetByteLength(buffer);
-
-    var offset = IS_UNDEFINED(byteOffset) ?  0 : byteOffset;
-    if (offset > bufferByteLength) throw MakeRangeError(kInvalidDataViewOffset);
-
-    var length = IS_UNDEFINED(byteLength)
-        ? bufferByteLength - offset
-        : byteLength;
-    if (length < 0 || offset + length > bufferByteLength) {
-      throw new MakeRangeError(kInvalidDataViewLength);
-    }
-    %_DataViewInitialize(this, buffer, offset, length);
-  } else {
+  if (IS_UNDEFINED(new.target)) {
     throw MakeTypeError(kConstructorNotFunction, "DataView");
   }
+
+  // TODO(binji): support SharedArrayBuffers?
+  if (!IS_ARRAYBUFFER(buffer)) throw MakeTypeError(kDataViewNotArrayBuffer);
+  if (!IS_UNDEFINED(byteOffset)) {
+    byteOffset = ToPositiveInteger(byteOffset, kInvalidDataViewOffset);
+  }
+  if (!IS_UNDEFINED(byteLength)) {
+    byteLength = TO_INTEGER(byteLength);
+  }
+
+  var bufferByteLength = %_ArrayBufferGetByteLength(buffer);
+
+  var offset = IS_UNDEFINED(byteOffset) ?  0 : byteOffset;
+  if (offset > bufferByteLength) throw MakeRangeError(kInvalidDataViewOffset);
+
+  var length = IS_UNDEFINED(byteLength)
+      ? bufferByteLength - offset
+      : byteLength;
+  if (length < 0 || offset + length > bufferByteLength) {
+    throw new MakeRangeError(kInvalidDataViewLength);
+  }
+  var result = %NewObject(GlobalDataView, new.target);
+  %_DataViewInitialize(result, buffer, offset, length);
+  return result;
 }
 
 function DataViewGetBufferJS() {
   if (!IS_DATAVIEW(this)) {
     throw MakeTypeError(kIncompatibleMethodReceiver, 'DataView.buffer', this);
   }
   return %DataViewGetBuffer(this);
 }
 
 function DataViewGetByteOffset() {
@@ skipping 84 matching lines @@
   "setUint32", DataViewSetUint32JS,
 
   "getFloat32", DataViewGetFloat32JS,
   "setFloat32", DataViewSetFloat32JS,
 
   "getFloat64", DataViewGetFloat64JS,
   "setFloat64", DataViewSetFloat64JS
 ]);
 
 })