Fix speedup of typedarray-length loading in the ICs as well as Crankshaft

src/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.
 
 "use strict";
 
 // This file relies on the fact that the following declaration has been made
 // in runtime.js:
 // var $Array = global.Array;
 var $ArrayBuffer = global.ArrayBuffer;
@@ skipping 296 matching lines @@
   %FunctionSetPrototype(global.NAME, new $Object());
 
   %AddNamedProperty(global.NAME, "BYTES_PER_ELEMENT", ELEMENT_SIZE,
                     READ_ONLY | DONT_ENUM | DONT_DELETE);
   %AddNamedProperty(global.NAME.prototype,
                     "constructor", global.NAME, DONT_ENUM);
   %AddNamedProperty(global.NAME.prototype,
                     "BYTES_PER_ELEMENT", ELEMENT_SIZE,
                     READ_ONLY | DONT_ENUM | DONT_DELETE);
   InstallGetter(global.NAME.prototype, "buffer", NAME_GetBuffer);
-  InstallGetter(global.NAME.prototype, "byteOffset", NAME_GetByteOffset);
-  InstallGetter(global.NAME.prototype, "byteLength", NAME_GetByteLength);
-  InstallGetter(global.NAME.prototype, "length", NAME_GetLength);
+  InstallGetter(global.NAME.prototype, "byteOffset", NAME_GetByteOffset,
+      DONT_ENUM | DONT_DELETE);
+  InstallGetter(global.NAME.prototype, "byteLength", NAME_GetByteLength,
+      DONT_ENUM | DONT_DELETE);
+  InstallGetter(global.NAME.prototype, "length", NAME_GetLength,
+      DONT_ENUM | DONT_DELETE);
   InstallGetter(global.NAME.prototype, symbolToStringTag,
                 TypedArrayGetToStringTag);
   InstallFunctions(global.NAME.prototype, DONT_ENUM, $Array(
         "subarray", NAMESubArray,
         "set", TypedArraySet
   ));
 endmacro
 
 TYPED_ARRAYS(SETUP_TYPED_ARRAY)
 }
@@ skipping 143 matching lines @@
 
       "getFloat32", DataViewGetFloat32JS,
       "setFloat32", DataViewSetFloat32JS,
 
       "getFloat64", DataViewGetFloat64JS,
       "setFloat64", DataViewSetFloat64JS
   ));
 }
 
 SetupDataView();