[PING^2] [PATCH, wwwdocs, AArch64] Document issues with singleton vector types

[Yufeng Zhang <Yufeng dot Zhang at arm dot com>]

Ping^2

Thanks,
Yufeng

On 05/08/14 17:38, Yufeng Zhang wrote:
> Ping~
>
> Originally posted here:
>
> http://gcc.gnu.org/ml/gcc-patches/2014-05/msg00019.html
>
> Thanks,
> Yufeng
>
> On 05/01/14 17:57, Yufeng Zhang wrote:
> > Hi,
> >
> > This patch documents issues with singleton vector types in the 4.9
> > AArch64 backend.
> >
> > "On AArch64, the singleton vector types int64x1_t, uint64x1_t and
> > float64x1_t exported by arm_neon.h are defined to be the same as their
> > base types.  This results in incorrect application of parameter passing
> > rules to arguments of types int64x1_t and uint64x1_t, with respect to
> > the AAPCS64 ABI specification.  In addition, names of C++ functions with
> > parameters of these types (including float64x1_t) are not mangled
> > correctly.  The current typedef declarations also unintentionally
> > allow implicit casting between singleton vector types and their base
> > types.  These issues will be resolved in a near future release.  See
> > PR60825 for more information."
> >
> > OK for the wwwdocs repos?
> >
> > Thanks,
> > Yufeng