The & (address) operator and register allocation

[The Demented Teddy Bear]

In article <1988Dec3.221843.28966 at utzoo.uucp>,
	henry at utzoo (Henry Spencer) writes:
> The original Berkeley RISC design had registers with addresses, carefully
> set up in such a way that you could pass pointers to them around freely.
> The idea was to maximize the ability to put local variables into registers.
> I don't know of anybody commercial who's copied this idea.

Umm, Henry, doesn't a PDP-10 count?  Seemed kinda like a commercial
system to me....  The registers certainly seemed addressable (hey,
you can even point the PC at them and execute code out of them).

Or have I missed something again?

Dieter
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