Define DEBUG for v8_optimized_debug=2

src/ast.cc

 // Copyright 2012 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 609 matching lines @@
     Handle<String> name = Handle<String>::cast(key->value());
     check_type_ = oracle->GetCallCheckType(this);
     receiver_types_.Clear();
     if (check_type_ == RECEIVER_MAP_CHECK) {
       oracle->CallReceiverTypes(this, name, call_kind, &receiver_types_);
       is_monomorphic_ = is_monomorphic_ && receiver_types_.length() > 0;
     } else {
       holder_ = GetPrototypeForPrimitiveCheck(check_type_, oracle->isolate());
       receiver_types_.Add(handle(holder_->map()), oracle->zone());
     }
-#ifdef DEBUG
+#ifdef ENABLE_SLOW_ASSERTS
     if (FLAG_enable_slow_asserts) {
       int length = receiver_types_.length();
       for (int i = 0; i < length; i++) {
         Handle<Map> map = receiver_types_.at(i);
         ASSERT(!map.is_null() && *map != NULL);
       }
     }
 #endif
     if (is_monomorphic_) {
       Handle<Map> map = receiver_types_.first();
@@ skipping 522 matching lines @@
     OS::SNPrintF(buffer, "%d", Smi::cast(*value_)->value());
     str = arr;
   } else {
     str = DoubleToCString(value_->Number(), buffer);
   }
   return isolate_->factory()->NewStringFromAscii(CStrVector(str));
 }
 
 
 } }  // namespace v8::internal