[x86-64 psABI]: Extend x86-64 psABI to support AVX-512

[Richard Henderson]

On 07/24/2013 05:23 AM, Richard Biener wrote:
> "H.J. Lu" <hjl.tools@gmail.com> wrote:
> 
>> Hi,
>>
>> Here is a patch to extend x86-64 psABI to support AVX-512:
> 
> Afaik avx 512 doubles the amount of xmm registers. Can we get them callee saved please?

Having them callee saved pre-supposes that one knows the width of the register.

There's room in the instruction set for avx1024.  Does anyone believe that is
not going to appear in the next few years?


r~