Register prototype_reg = ToRegister(instr->temp());
Register map_reg = ToRegister(instr->temp2());
- Handle<JSObject> holder = instr->holder();
- Handle<JSObject> current_prototype = instr->prototype();
+ ZoneList<Handle<JSObject> >* prototypes = instr->prototypes();
+ ZoneList<Handle<Map> >* maps = instr->maps();
- // Load prototype object.
- __ LoadHeapObject(prototype_reg, current_prototype);
+ ASSERT(prototypes->length() == maps->length());
- // Check prototype maps up to the holder.
- while (!current_prototype.is_identical_to(holder)) {
+ for (int i = 0; i < prototypes->length(); i++) {
+ __ LoadHeapObject(prototype_reg, prototypes->at(i));
__ lw(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset));
DoCheckMapCommon(map_reg,
- Handle<Map>(current_prototype->map()),
- ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment());
- current_prototype =
- Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype()));
- // Load next prototype object.
- __ LoadHeapObject(prototype_reg, current_prototype);
- }
-
- // Check the holder map.
- __ lw(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset));
- DoCheckMapCommon(map_reg,
- Handle<Map>(current_prototype->map()),
- ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment());
+ maps->at(i),
+ ALLOW_ELEMENT_TRANSITION_MAPS,
+ instr->environment());
+ }
}
DECLARE_CONCRETE_INSTRUCTION(CheckPrototypeMaps, "check-prototype-maps")
DECLARE_HYDROGEN_ACCESSOR(CheckPrototypeMaps)
- Handle<JSObject> prototype() const { return hydrogen()->prototype(); }
- Handle<JSObject> holder() const { return hydrogen()->holder(); }
+ ZoneList<Handle<JSObject> >* prototypes() const {
+ return hydrogen()->prototypes();
+ }
+ ZoneList<Handle<Map> >* maps() const { return hydrogen()->maps(); }
};