[Ping] [patch 0/3] New macro PREFERRED_RENAME_CLASS

[Eric Botcazou]

> For each element in the chain, we have the class.  Can we compute a
> superset of all the classes in the chain?  If we cannot or if this is
> ALL_REGS, then we iterate as before.  If we can, we call the hook on the
> result and we first iterate on the contents of this result (a class); if we
> find a new reg, we stop, otherwise we iterate on the remaining registers.

"the remaining registers" are the registers not in the class.

-- 
Eric Botcazou