Re:ARM64 and You
by Tuna-Fish on Saturday September 28, 2013 @03:34AM
(#6461245)
> in the real world we'll never see one.
Not from Apple, maybe. I know there is at least one in the works for the server market.
> And in any case: there's another reasonably well-known company out there with an even cruftier ISA making 4+GHz 6-wide superscalar cores with backwards 32 (and 16!) bit compatibility modes. Instruction decode is the sort of thing programmers understand, so we tend to get hung up on it when talking about CPUs.
You absolutely can implement a fast core out of almost any ISA (just look at IBM System z!) if you have sufficient resources. The point is that A64 is amenable to being made into a fast CPU without Intel-scale design effort.
Not from Apple, maybe. I know there is at least one in the works for the server market.
> And in any case: there's another reasonably well-known company out there with an even cruftier ISA making 4+GHz 6-wide superscalar cores with backwards 32 (and 16!) bit compatibility modes. Instruction decode is the sort of thing programmers understand, so we tend to get hung up on it when talking about CPUs.
You absolutely can implement a fast core out of almost any ISA (just look at IBM System z!) if you have sufficient resources. The point is that A64 is amenable to being made into a fast CPU without Intel-scale design effort.