On 2/18/19, Andrew Pinski <pins...@gmail.com> wrote: > GCC already has most of this support. See > https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Vector-Extensions.html#Vector-Extensions > > The dot in the typenames are not going to supported though. > > Thanks, > Andrew
--what #include files and/or compiler flags are needed to enable this stuff? (Be nice if that doc page said.) My gcc allows me to use, e.g. c = _mm_shuffle_epi8(a, b); (and my code worked!) provided I have done #include <tmmintrin.h> #include <immintrin.h> but if I try to replace that with the nicer (since more portable) c = __builtin_shuffle(a, b); then error: use of unknown builtin '__builtin_shuffle' [-Wimplicit-function-declaration] -- Warren D. Smith http://RangeVoting.org <-- add your endorsement (by clicking "endorse" as 1st step)
