On Wed, Nov 09, 2011 at 10:55:53AM -0800, Richard Henderson wrote:
> On 11/09/2011 10:50 AM, Jakub Jelinek wrote:
> > Aren't the symbol versions part of the ABI discussed with Intel and others
> > though?
>
> Ug. Probably. Though they never actually responded wrt the symbol versions
> when we talked; none of the guys on the conference call undersood that bit
> about how ELF works.
>
> Other options for building a library with missing symbols?
What exactly are AVX instructions needed for?
Is it just that the entry points get their arguments in %ymm0/%ymm1 etc.
and/or return results in %ymm0? If so, the poor man's/not very capable
target hack could be to have assembly wrappers for those that would
just vextractf128 the high parts either into some other %xmm registers,
or into memory (using .byte ...) and then call some less optimized C
version of those.
Jakub
