Amends the TypedArray constructor to use the path for primitives for all

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 245 matching lines @@
   if (IS_RECEIVER(prototype) && prototype !== GlobalArrayBufferPrototype) {
     %InternalSetPrototype(%TypedArrayGetBuffer(obj), prototype);
   }
 }
 
 function NAMEConstructor(arg1, arg2, arg3) {
   if (!IS_UNDEFINED(new.target)) {
     if (IS_ARRAYBUFFER(arg1) || IS_SHAREDARRAYBUFFER(arg1)) {
       NAMEConstructByArrayBuffer(this, arg1, arg2, arg3);
     } else if (IS_NUMBER(arg1) || IS_STRING(arg1) ||
-               IS_BOOLEAN(arg1) || IS_UNDEFINED(arg1)) {
+               IS_BOOLEAN(arg1) || IS_UNDEFINED(arg1) ||
+               IS_SYMBOL(arg1) || IS_NULL(arg1)) {

[Dan Ehrenberg, 2016/06/23 22:03:33]

This will become outdated next time a new primitive type is added (e.g.,
SIMD.js). Maybe instead rephrase this code to put this as the "else" case, and
the current else case would be if (IS_OBJECT(arg1)) ?

[bakkot, 2016/06/23 22:29:53]

Done.

       NAMEConstructByLength(this, arg1);
     } else if (IS_TYPEDARRAY(arg1)) {
       NAMEConstructByTypedArray(this, arg1);
     } else {
       var iteratorFn = arg1[iteratorSymbol];
       if (IS_UNDEFINED(iteratorFn) || iteratorFn === ArrayValues) {
         NAMEConstructByArrayLike(this, arg1, arg1.length);
       } else {
         NAMEConstructByIterable(this, arg1, iteratorFn);
       }
@@ skipping 622 matching lines @@
   "setUint32", DataViewSetUint32JS,
 
   "getFloat32", DataViewGetFloat32JS,
   "setFloat32", DataViewSetFloat32JS,
 
   "getFloat64", DataViewGetFloat64JS,
   "setFloat64", DataViewSetFloat64JS
 ]);
 
 })