[builtins] Migrate Number predicates and make them optimizable.

src/js/i18n.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.
 
 // ECMAScript 402 API implementation.
 
 /**
  * Intl object is a single object that has some named properties,
  * all of which are constructors.
  */
@@ skipping 11 matching lines @@
 var FLAG_intl_extra;
 var GlobalDate = global.Date;
 var GlobalNumber = global.Number;
 var GlobalRegExp = global.RegExp;
 var GlobalString = global.String;
 var InstallFunctions = utils.InstallFunctions;
 var InstallGetter = utils.InstallGetter;
 var InternalArray = utils.InternalArray;
 var InternalRegExpMatch;
 var InternalRegExpReplace
-var IsNaN;
 var ObjectHasOwnProperty = utils.ImportNow("ObjectHasOwnProperty");
 var OverrideFunction = utils.OverrideFunction;
 var patternSymbol = utils.ImportNow("intl_pattern_symbol");
 var resolvedSymbol = utils.ImportNow("intl_resolved_symbol");
 var SetFunctionName = utils.SetFunctionName;
 var StringIndexOf;
 var StringLastIndexOf;
 var StringSubstr;
 var StringSubstring;
 
 utils.Import(function(from) {
   ArrayJoin = from.ArrayJoin;
   ArrayPush = from.ArrayPush;
-  IsNaN = from.IsNaN;
   InternalRegExpMatch = from.InternalRegExpMatch;
   InternalRegExpReplace = from.InternalRegExpReplace;
   StringIndexOf = from.StringIndexOf;
   StringLastIndexOf = from.StringLastIndexOf;
   StringSubstr = from.StringSubstr;
   StringSubstring = from.StringSubstring;
 });
 
 utils.ImportFromExperimental(function(from) {
   FLAG_intl_extra = from.FLAG_intl_extra;
@@ skipping 2163 matching lines @@
 
 
 /**
  * Returns actual formatted date or fails if date parameter is invalid.
  */
 function toLocaleDateTime(date, locales, options, required, defaults, service) {
   if (!(date instanceof GlobalDate)) {
     throw %make_type_error(kMethodInvokedOnWrongType, "Date");
   }
 
-  if (IsNaN(date)) return 'Invalid Date';
+  var dateValue = TO_NUMBER(date);
+  if (NUMBER_IS_NAN(dateValue)) return 'Invalid Date';
 
   var internalOptions = toDateTimeOptions(options, required, defaults);
 
   var dateFormat =
       cachedOrNewService(service, locales, options, internalOptions);
 
   return formatDate(dateFormat, date);
 }
 
 
@@ skipping 50 matching lines @@
   }
 );
 
 utils.Export(function(to) {
   to.AddBoundMethod = AddBoundMethod;
   to.IntlParseDate = IntlParseDate;
   to.IntlParseNumber = IntlParseNumber;
 });
 
 })