Fortran vector math header

[Joseph Myers]

On Mon, 4 Feb 2019, Jakub Jelinek wrote:

> > +!GCC$ builtin (sin) attributes simd (notinbranch) if('x86_64')
> > +!GCC$ builtin (sinf) attributes simd (notinbranch) if('i386')
> 
> That is all from me, but I think you need a buy-in from the Fortran
> maintainers (if they are ok with such an extension from Fortran language
> POV) and from Joseph (or other glibc people).

My main comment here is that if you go with the approach of a single 
header shared by multilibs, you should also update the driver code so it 
no longer uses any sort of multilib suffix when searching for this header 
(it *should* still use the sysroot headers suffix when searching in a 
sysroot).

-- 
Joseph S. Myers
joseph@codesourcery.com