Re: GCC 7 on ppc64le does not recognize vec_xl_be?

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On Sat, Nov 16, 2019 at 5:33 PM Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote:
>
> On Sat, 16 Nov 2019 at 21:25, Jeffrey Walton <noloader@xxxxxxxxx> wrote:
> >
> > On Sat, Nov 16, 2019 at 1:26 PM Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote:
> > >  ...
> > > I already sent the following to Jeffrey 8 hours ago (off-list, because
> > > I could only send HTML mail at the time):
> > >
> > > "Those are the docs for GCC trunk. That function is not listed in the
> > > docs for GCC 7."
> >
> > GCC tells me it supports the load by accepting -mcpu=power9 and
> > defining _ARCH_PWR9.
> >
> > The problems with GCC seem to be a little larger then inaccurate docs.
>
> What? You're talking nonsense.
>
> You said:
> "According to the GCC docs vec_xl_be is available with ISA 3.0:
> https://gcc.gnu.org/onlinedocs/gcc/PowerPC-AltiVec-Built-in-Functions-Available-on-ISA-3_002e0.html
> "
>
> You are consulting the docs for GCC trunk and assuming they apply to
> GCC 7. That's simply wrong.

The docs don't list an "applies to" or "since". We asked for that
about 5 years ago.

Here is the link returned for a search of "GCC vec_xl_be". There is no
mention of GCC 10.0 or limitations on availability:
https://gcc.gnu.org/onlinedocs/gcc/PowerPC-AltiVec-Built-in-Functions-Available-on-ISA-3_002e0.html

Like I said, you don't understand how search works and how users use it.

Jeff



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