5 Jan
2021
5 Jan
'21
8:32 a.m.
On Tue, Jan 5, 2021 at 8:23 AM Niels Möller nisse@lysator.liu.se wrote:
nisse@lysator.liu.se (Niels Möller) writes:
...
The reference manual says
Armv8 can support the following levels of support for Advanced SIMD and floating-point instructions:
Full SIMD and floating-point support without exception trapping.
Full SIMD and floating-point support with exception trapping.
No floating-point or SIMD support. This option is licensed only for implementations targeting specialized markets.
As far as I understand, that means Neon should be always available, in both 32-bit and 64-bit mode.
NEON is called ASIMD under ARMv8. It is part of the base machine, like SSE2 is part of x86_64.
Jeff