That was a bit overblown, due to my lack of knowlage about MMX. It has a lot mor... | Hacker News

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		camel-cdr 5 days ago \| parent \| context \| favorite \| on: RISC-V Vector Primer That was a bit overblown, due to my lack of knowlage about MMX. It has a lot more things than MMX. But the core idea behind the P extension was to reuse the GPRs to do SIMD operations with little additional implementation cost. The spec is currently all over the place, the best reference is currently probably the WIP intrinsics documentation: https://github.com/topperc/p-ext-intrinsics/blob/main/source... P is not meant to compete/be an alternative for RVV. It's meant for hardware targets you can't scale RVV down to.

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Narishma 2 days ago [–]

> But the core idea behind the P extension was to reuse the GPRs to do SIMD operations with little additional implementation cost.

I think ARMv6 had something similar, before they went with proper SIMD in v7.

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