Re: Keeping other stuff with addresses (was: What is an N-bit machine?)

Michael S <already5chosen@yahoo.com> writes:

On Sat, 30 Nov 2024 16:57:56 GMT
anton@mips.complang.tuwien.ac.at (Anton Ertl) wrote:
>

Thomas Koenig <tkoenig@netcologne.de> writes:

Anton Ertl <anton@mips.complang.tuwien.ac.at> schrieb: 

anton@mips.complang.tuwien.ac.at (Anton Ertl) writes: 

John Levine <johnl@taugh.com> writes: 

These days I'd say the relevant N is the size of arithmetic
registers but a lot of marketers appear to disagree with me. 

...

John Levine said "arythmetic". Not logic, not move, not swizzle, not
load/store. The widest arythmetic on Intel/AMD is 64 bits for inputs and
128 bits for output (integer multiplication).

The widest arithmetic registers on AMD64 with AVX-512 are the ZMM
registers with 512 bits each.  Sure, they are used for arithmetic on a
sequence of individually narrower data, but the registers have 512
bits nonetheless.

- anton
--
'Anyone trying for "industrial quality" ISA should avoid undefined behavior.'
  Mitch Alsup, <c17fcd89-f024-40e7-a594-88a85ac10d20o@googlegroups.com>