Separate stub types from property types.

Separate stub types from property types.

Committed: https://code.google.com/p/v8/source/detail?r=11920

[Toon Verwaest, 2012-06-25 09:09:00]

PTAL.

[Jakob Kummerow, 2012-06-25 10:40:31]

LGTM with comments.

https://chromiumcodereview.appspot.com/10656018/diff/1/src/objects.h
File src/objects.h (right):

https://chromiumcodereview.appspot.com/10656018/diff/1/src/objects.h#newcode182
src/objects.h:182: enum StubType {
How do you feel about moving this into the Code class? It would require
inserting a bunch of "Code::" everywhere, but I think it'd be cleaner. In turn,
you could probably remove the _STUB part of the values' names.

https://chromiumcodereview.appspot.com/10656018/diff/1/src/objects.h#newcode183
src/objects.h:183: NORMAL_STUB              = 0,
no need to explicitly define the values.

https://chromiumcodereview.appspot.com/10656018/diff/1/src/objects.h#newcode4567
src/objects.h:4567: class TypeField: public BitField<StubType, 3, 4> {};
You don't need 4 bits for an enum with 7 possible values. Please either reduce
the BitField size to 3, or add a comment pointing out that there's a slack bit
in there that can be reclaimed if it's needed for some other purpose.