arrange to create prototypes for generators

src/objects.cc

 // Copyright 2013 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 8385 matching lines @@
 
 int SharedFunctionInfo::CalculateInObjectProperties() {
   return (CalculateInstanceSize() - JSObject::kHeaderSize) / kPointerSize;
 }
 
 
 bool SharedFunctionInfo::CanGenerateInlineConstructor(Object* prototype) {
   // Check the basic conditions for generating inline constructor code.
   if (!FLAG_inline_new
       || !has_only_simple_this_property_assignments()
+      || is_generator()
       || this_property_assignments_count() == 0) {
     return false;
   }
 
   Isolate* isolate = GetIsolate();
   Heap* heap = isolate->heap();
 
   // Traverse the proposed prototype chain looking for properties of the
   // same names as are set by the inline constructor.
   for (Object* obj = prototype;
@@ skipping 5954 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal