* 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?
