On Thu, 29 Sept 2022 at 16:22, Richard Henderson <richard.hender...@linaro.org> wrote: > > On 9/29/22 04:44, Peter Maydell wrote: > > Architecturally, Neon implies that you must have 32 dp registers, > > but not having Neon does not imply that you must only have 16. > > In particular, the Cortex-A15 always implements VFPv4-D32 > > whether Neon is enabled or not. > > A15 requires VFP == NEON in its configuration.
No, it requires that if you have Neon then you have VFP; but it allows all of: * no VFP or Neon * VFP, no Neon * VFP and Neon https://developer.arm.com/documentation/ddi0438/i/neon-and-vfp-unit/about-neon-and-vfp-unit -- PMM
