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