[RFC] PPC64: Vector Function ABI for Power Architecture

[GT]

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, November 22, 2019 3:34 PM, Bill Schmidt <wschmidt@linux.ibm.com> wrote:

> On 11/22/19 2:27 PM, Tulio Magno Quites Machado Filho wrote:
>
> > GT tnggil@protonmail.com writes:
> >
> > > 1.  The document is hosted at URL: https://github.com/power8-abi-doc
> > > 2.  Bill Schmidt, cc'ed here, is the IBMer ultimately responsible for the document.
> > >
> > > The pdf does not render quite right - so for feedback regarding visual presentation of the document, first download the html and open it in a browser. Please use the ABI's rendering in a browser as the basis for any recommendations on its formatting.
> > > In section "Vector Function Name Mangling", I'm afraid we can't leave the <isa>
> > > with an entry as generic as VSX.
> >
> > There are VSX instructions included in ISA 3.0 that will not execute in ISA
> > 2.07. So, I think we need 2 <isa> entries there:
> >
> > 1.  ISA 2.07, which is the minimum ISA required in this document.
> > 2.  ISA 3.0
>

We have not used any instructions introduced in ISA 3.0. Can I simply have a single
entry indicating ISA 2.07? Or should it be ISA 2.07+ (i.e. ISA at or above v2.07)?
Or do we still really need 2 separate entries?

Thanks.
Bert.