‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, February 19, 2020 5:52 PM, Joseph Myers <jos...@codesourcery.com>
wrote:
> On Wed, 19 Feb 2020, GT wrote:
>
> > 1. In the Vector Function ABI document, under section "Vector Function
> > Name Mangling", state that all <isa> vector variants will be created by
> > the compiler. And that it will be up to the caller of vectorized
> > functions to select the preferred version ('b' or 'c' are the only
> > choices presently).
> >
>
> A reminder, "all" needs to be a particular fixed set that will not be
> expanded in future versions of the ABI, so that a glibc installed now
> continues to work with future compilers (rather than a future compiler
> wrongly taking a pragma / attribute in existing glibc headers as meaning
> some future vector ISA variant, unknown when that glibc header was
> written, is available).
What more needs to be done other than documenting the GLIBC and GCC versions for
which 'b' and 'c' vector versions are available? It is how x86_64 explained
the differences between Examples 1 and 2 at
https://sourceware.org/glibc/wiki/libmvec
Bert.
