On 6 March 2018 at 16:22, Jens Axboe <axboe@xxxxxxxxx> wrote:
>
> +##########################################
> +# sse probe
> +sse="no"
> +cat > $TMPC << EOF
> +#include <xmmintrin.h>
> +#include <immintrin.h>
> +int main(int argc, char **argv)
> +{
> + __m128 val;
> + float const *src = NULL;
> + float *dst = NULL;
> + val = _mm_load_ps(src);
> + _mm_store_ps(dst, val);
> + return 0;
> +}
> +EOF
> +if compile_prog "-msse" "" "sse"; then
> + sse="yes"
> +fi
> +print_config "SSE (compiler)" "$sse"
According to https://stackoverflow.com/questions/28939652/how-to-detect-sse-sse2-avx-avx2-avx-512-avx-128-fma-kcvi-availability-at-compile/28939692#28939692
in gcc and clang you can just check for the appropriate define (e.g.
__SSE2__ ) if you're only interested in what's available at compile
time...
--
Sitsofe | http://sucs.org/~sits/
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