On Wed, Jul 24, 2013 at 10:36 AM, Richard Biener <richard.guent...@gmail.com> wrote: > "H.J. Lu" <hjl.to...@gmail.com> wrote: > >>On Wed, Jul 24, 2013 at 8:23 AM, Richard Biener >><richard.guent...@gmail.com> wrote: >>> "H.J. Lu" <hjl.to...@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? >>> >> >>Make them callee saved means we need to change ld.so to >>preserve them and we need to change unwind library to >>support them. It is certainly doable. > > IMHO it was a mistake to not have any callee saved xmm register in the > original abi - we should fix this at this opportunity. Loops with function > calls are not that uncommon. >
Are there any other Linux targets with callee saved vector registers? -- H.J.
