This cleans up handling of objects that are not reference counted and
makes their interactions with ARC more consistent. We should probably
generalise this somewhat - it currently special cases NSConstantString
and NSGlobalBlock, but it would be nice to have an API for constant
objects.
Every class is either a class or a metaclass, it doesn't make sense to
use two flags to store one bit of data.
Also remove the newabi flag from classes in the v2 ABI, where it's
redundant.
In the legact ABI, superclass pointers are initially set to strings
containing the superclass name and the runtime fixes them up. In the
new ABI, the compiler sets up the linkage directly.
David Chisnall
David Chisnall
theraven
rfm