On Thu, Mar 3, 2016 at 8:51 AM, Victor Rodriguez <vm.rod25@xxxxxxxxx> wrote: > On Thu, Mar 3, 2016 at 8:49 AM, Florian Weimer <fw@xxxxxxxxxxxxx> wrote: >> * Victor Rodriguez: >> >>> On Thu, Mar 3, 2016 at 8:31 AM, Florian Weimer <fw@xxxxxxxxxxxxx> wrote: >>>> * Victor Rodriguez: >>>> >>>>> What HW are you ussing ? >>>> >>>> Both hardware with amd without avx512f capability. There is run-time >>>> detection for it, but for it to be effective, most of the program has >>>> to be compiled without -mavx512f, otherwise the program will use >>>> avx512f instructions before getting to the detection code. >>> >>> Have you try Function Multi Versioning ? >> >> According to the GCC documentation, "avx2" and so on are not supported >> as targets in target function attributes. Perhaps this is incorrect >> and the manual needs fixing? > > Yes they are in the latest GCC ( mainline ) or in the Clear Linux GCC > ( I added the patches :P ) I think I should fix the documenation :)
