Optimize %ClassOf() on IA-32 and use it instead of the...

src/v8natives.js

Index: src/v8natives.js
===================================================================
--- src/v8natives.js	(revision 2290)
+++ src/v8natives.js	(working copy)
@@ -192,7 +192,7 @@
 
 // ECMA-262 - 15.2.4.2
 function ObjectToString() {
-  var c = %ClassOf(this);
+  var c = %_ClassOf(this);
   // Hide Arguments from the outside.
   if (c === 'Arguments') c  = 'Object';
   return "[object " + c + "]";
@@ -311,7 +311,7 @@
 function BooleanToString() {
   // NOTE: Both Boolean objects and values can enter here as
   // 'this'. This is not as dictated by ECMA-262.
-  if (!IS_BOOLEAN(this) && !%HasBooleanClass(this))
+  if (!IS_BOOLEAN(this) && !IS_BOOLEAN_WRAPPER(this))
     throw new $TypeError('Boolean.prototype.toString is not generic');
   return ToString(%_ValueOf(this));
 }
@@ -320,7 +320,7 @@
 function BooleanValueOf() {
   // NOTE: Both Boolean objects and values can enter here as
   // 'this'. This is not as dictated by ECMA-262.
-  if (!IS_BOOLEAN(this) && !%HasBooleanClass(this))
+  if (!IS_BOOLEAN(this) && !IS_BOOLEAN_WRAPPER(this))
     throw new $TypeError('Boolean.prototype.valueOf is not generic');
   return %_ValueOf(this);
 }
@@ -365,7 +365,7 @@
   // 'this'. This is not as dictated by ECMA-262.
   var number = this;
   if (!IS_NUMBER(this)) {
-    if (!%HasNumberClass(this))
+    if (!IS_NUMBER_WRAPPER(this))
       throw new $TypeError('Number.prototype.toString is not generic');
     // Get the value of this number in case it's an object.
     number = %_ValueOf(this);
@@ -395,7 +395,7 @@
 function NumberValueOf() {
   // NOTE: Both Number objects and values can enter here as
   // 'this'. This is not as dictated by ECMA-262.
-  if (!IS_NUMBER(this) && !%HasNumberClass(this))
+  if (!IS_NUMBER(this) && !IS_NUMBER_WRAPPER(this))
     throw new $TypeError('Number.prototype.valueOf is not generic');
   return %_ValueOf(this);
 }
@@ -502,10 +502,9 @@
 $Function.prototype.constructor = $Function;
 
 function FunctionSourceString(func) {
-  // NOTE: Both Function objects and values can enter here as
-  // 'func'. This is not as dictated by ECMA-262.
-  if (!IS_FUNCTION(func) && !%HasFunctionClass(func))
+  if (!IS_FUNCTION(func)) {
     throw new $TypeError('Function.prototype.toString is not generic');
+  }
 
   var source = %FunctionGetSourceCode(func);
   if (!IS_STRING(source)) {