Create an abstraction for the string type flags so that they can be cached....

src/codegen.cc

 // Copyright 2007-2008 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 312 matching lines @@
      "_Arguments"},
     {&v8::internal::CodeGenerator::GenerateValueOf,
      "_ValueOf"},
     {&v8::internal::CodeGenerator::GenerateSetValueOf,
      "_SetValueOf"},
     {&v8::internal::CodeGenerator::GenerateFastCharCodeAt,
      "_FastCharCodeAt"},
     {&v8::internal::CodeGenerator::GenerateObjectEquals,
      "_ObjectEquals"}
   };
-  if (node->name()->length() > 0 && node->name()->Get(0) == '_') {
+  Handle<String> name = node->name();
+  StringShape shape(*name);
+  if (name->length(shape) > 0 && name->Get(shape, 0) == '_') {
     for (unsigned i = 0;
          i < sizeof(kInlineRuntimeLUT) / sizeof(InlineRuntimeLUT);
          i++) {
       const InlineRuntimeLUT* entry = kInlineRuntimeLUT + i;
-      if (node->name()->IsEqualTo(CStrVector(entry->name))) {
+      if (name->IsEqualTo(CStrVector(entry->name))) {
         ((*this).*(entry->method))(args);
         return true;
       }
     }
   }
   return false;
 }
 
 
 void CodeGenerator::GenerateFastCaseSwitchStatement(SwitchStatement* node,
@@ skipping 116 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