sysv/ms_abi attribute fix, part 5, proper call clobbered registers for ms->sysv calls

[Ian Lance Taylor]

Jan Hubicka <hubicka@ucw.cz> writes:

> I was always under impression that unspec is more or less expression so
> it should appear in set or something.  unspec_volatile is not that much
> worse than foreign ABI function call, but I will update it to unspec.
> At least rep;return is modelled same way.

Using unspec by itself in an insn isn't too useful, as it doesn't have
any outputs and thus tends to get deleted.  Using unspec in
conjunction with other RTL in a parallel is fine.


>> ...
>
> This is actually good idea ;)

Phew, got my good idea for 2008 just in time.  I was getting worried.

Ian