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 )
