reg = holder_reg; // From now on the object will be in holder_reg.
__ mov(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
} else {
+ Register map_reg = scratch1;
+ __ mov(map_reg, FieldOperand(reg, HeapObject::kMapOffset));
if (depth != 1 || check == CHECK_ALL_MAPS) {
- __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK);
+ Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
+ __ CmpWeakValue(map_reg, cell, scratch2);
+ __ j(not_equal, miss);
}
// Check access rights to the global object. This has to happen after
// global proxy (as opposed to using slow ICs). See corresponding code
// in LookupForRead().
if (current_map->IsJSGlobalProxyMap()) {
- __ CheckAccessGlobalProxy(reg, scratch1, scratch2, miss);
+ __ CheckAccessGlobalProxy(reg, map_reg, scratch2, miss);
+ // Restore map_reg.
+ __ mov(map_reg, FieldOperand(reg, HeapObject::kMapOffset));
} else if (current_map->IsJSGlobalObjectMap()) {
GenerateCheckPropertyCell(masm(), Handle<JSGlobalObject>::cast(current),
name, scratch2, miss);
}
-
- __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
-
reg = holder_reg; // From now on the object will be in holder_reg.
-
- __ mov(reg, FieldOperand(scratch1, Map::kPrototypeOffset));
+ __ mov(reg, FieldOperand(map_reg, Map::kPrototypeOffset));
}
// Go to the next object in the prototype chain.
if (depth != 0 || check == CHECK_ALL_MAPS) {
// Check the holder map.
- __ CheckMap(reg, current_map, miss, DONT_DO_SMI_CHECK);
+ __ mov(scratch1, FieldOperand(reg, HeapObject::kMapOffset));
+ Handle<WeakCell> cell = Map::WeakCellForMap(current_map);
+ __ CmpWeakValue(scratch1, cell, scratch2);
+ __ j(not_equal, miss);
}
// Perform security check for access to the global object.