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

src/codegen.cc

 // Copyright 2009 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 401 matching lines @@
 // inline instead of generating calls to them.  They are used
 // for implementing Function.prototype.call() and
 // Function.prototype.apply().
 CodeGenerator::InlineRuntimeLUT CodeGenerator::kInlineRuntimeLUT[] = {
   {&CodeGenerator::GenerateIsSmi, "_IsSmi"},
   {&CodeGenerator::GenerateIsNonNegativeSmi, "_IsNonNegativeSmi"},
   {&CodeGenerator::GenerateIsArray, "_IsArray"},
   {&CodeGenerator::GenerateIsConstructCall, "_IsConstructCall"},
   {&CodeGenerator::GenerateArgumentsLength, "_ArgumentsLength"},
   {&CodeGenerator::GenerateArgumentsAccess, "_Arguments"},
+  {&CodeGenerator::GenerateClassOf, "_ClassOf"},
   {&CodeGenerator::GenerateValueOf, "_ValueOf"},
   {&CodeGenerator::GenerateSetValueOf, "_SetValueOf"},
   {&CodeGenerator::GenerateFastCharCodeAt, "_FastCharCodeAt"},
   {&CodeGenerator::GenerateObjectEquals, "_ObjectEquals"},
   {&CodeGenerator::GenerateLog, "_Log"},
   {&CodeGenerator::GenerateRandomPositiveSmi, "_RandomPositiveSmi"},
   {&CodeGenerator::GenerateMathSin, "_Math_sin"},
   {&CodeGenerator::GenerateMathCos, "_Math_cos"}
 };
 
@@ skipping 96 matching lines @@
 void ArgumentsAccessStub::Generate(MacroAssembler* masm) {
   switch (type_) {
     case READ_LENGTH: GenerateReadLength(masm); break;
     case READ_ELEMENT: GenerateReadElement(masm); break;
     case NEW_OBJECT: GenerateNewObject(masm); break;
   }
 }
 
 
 } }  // namespace v8::internal