Michael S (already5chosen.delete@this.yahoo.com) on February 21, 2019 12:47 am wrote:
> none (none.delete@this.none.com) on February 20, 2019 11:03 pm wrote:
> >
> > I hope they won't do as Intel that still don't have AVX on all of their CPU more than
> > 10 years after it was announced.
> >
>
> You mean, you have hopes that by 2026 all ARMv8-A cores shipped in new silicon
> will include support for SVE? Given Arm's business model, the chance for it
> appears very close to zero. Personally, I don't consider it a problem.

What in ARM's business model would prevent from having SVE in v8A cores according to you?

A 128-bit SVE should not be significantly larger than Neon and could reuse the datapaths,
so it'd be better to have it even on lower end A class CPU.

> The problem right now is not that SVE support is not universal, but that it does
> not exist at all, even in cores like N1, where it would already make sense.

Agreed. But that's not what I had in mind. Once ARM has a core with SVE, I would prefer
that they have it in every A class CPU, contrary to what Intel does. ARM already made a
mistake by making Neon optional on Cortex-A9, which resulted in NVidia not using it, which
in turn meant that Android did not have support for Neon enabled by default in their
toolchains for years, and you had to have two codepaths.