Revert "Make Object.freeze fast"

src/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1207 matching lines @@
   %PreventExtensions(obj);
   return obj;
 }
 
 
 // ES5 section 15.2.3.9.
 function ObjectFreeze(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.freeze"]);
   }
-  var isProxy = %IsJSProxy(obj);
-  if (isProxy || %HasNonStrictArgumentsElements(obj)) {
-    if (isProxy) {
-      ProxyFix(obj);
+  if (%IsJSProxy(obj)) {
+    ProxyFix(obj);
+  }
+  var names = ObjectGetOwnPropertyNames(obj);
+  for (var i = 0; i < names.length; i++) {
+    var name = names[i];
+    var desc = GetOwnProperty(obj, name);
+    if (desc.isWritable() || desc.isConfigurable()) {
+      if (IsDataDescriptor(desc)) desc.setWritable(false);
+      desc.setConfigurable(false);
+      DefineOwnProperty(obj, name, desc, true);
     }
-    var names = ObjectGetOwnPropertyNames(obj);
-    for (var i = 0; i < names.length; i++) {
-      var name = names[i];
-      var desc = GetOwnProperty(obj, name);
-      if (desc.isWritable() || desc.isConfigurable()) {
-        if (IsDataDescriptor(desc)) desc.setWritable(false);
-        desc.setConfigurable(false);
-        DefineOwnProperty(obj, name, desc, true);
-      }
-    }
-    %PreventExtensions(obj);
-  } else {
-    // TODO(adamk): Is it worth going to this fast path if the
-    // object's properties are already in dictionary mode?
-    %ObjectFreeze(obj);
   }
+  %PreventExtensions(obj);
   return obj;
 }
 
 
 // ES5 section 15.2.3.10
 function ObjectPreventExtension(obj) {
   if (!IS_SPEC_OBJECT(obj)) {
     throw MakeTypeError("called_on_non_object", ["Object.preventExtension"]);
   }
   if (%IsJSProxy(obj)) {
@@ skipping 542 matching lines @@
   %SetCode($Function, NewFunction);
   %SetProperty($Function.prototype, "constructor", $Function, DONT_ENUM);
 
   InstallFunctions($Function.prototype, DONT_ENUM, $Array(
     "bind", FunctionBind,
     "toString", FunctionToString
   ));
 }
 
 SetUpFunction();