Added two convenience methods to access an int/double argument from within a

src/stub-cache.cc

 // Copyright 2011 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 1352 matching lines @@
   // function.
   return result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty) {
   ASSERT(args.length() == 4);
   JSObject* recv = JSObject::cast(args[0]);
   String* name = String::cast(args[1]);
   Object* value = args[2];
-  StrictModeFlag strict_mode =
-      static_cast<StrictModeFlag>(Smi::cast(args[3])->value());
+  StrictModeFlag strict_mode = static_cast<StrictModeFlag>(args.smi_at(3));
   ASSERT(strict_mode == kStrictMode || strict_mode == kNonStrictMode);
   ASSERT(recv->HasNamedInterceptor());
   PropertyAttributes attr = NONE;
   MaybeObject* result = recv->SetPropertyWithInterceptor(
       name, value, attr, strict_mode);
   return result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor) {
   JSObject* receiver = JSObject::cast(args[0]);
-  ASSERT(Smi::cast(args[1])->value() >= 0);
-  uint32_t index = Smi::cast(args[1])->value();
+  ASSERT(args.smi_at(1) >= 0);
+  uint32_t index = args.smi_at(1);
   return receiver->GetElementWithInterceptor(receiver, index);
 }
 
 
 MaybeObject* StubCompiler::CompileCallInitialize(Code::Flags flags) {
   HandleScope scope(isolate());
   int argc = Code::ExtractArgumentsCountFromFlags(flags);
   Code::Kind kind = Code::ExtractKindFromFlags(flags);
   Code::ExtraICState extra_ic_state = Code::ExtractExtraICStateFromFlags(flags);
   if (kind == Code::CALL_IC) {
@@ skipping 473 matching lines @@
       expected_receiver_type_ =
           FunctionTemplateInfo::cast(signature->receiver());
     }
   }
 
   is_simple_api_call_ = true;
 }
 
 
 } }  // namespace v8::internal