Hello Marc, Uroš,
On 10 Nov 21:33, Uros Bizjak wrote:
> On Sun, Nov 9, 2014 at 5:26 PM, Marc Glisse <marc.gli...@inria.fr> wrote:
> > Hello,
> >
> > < > and == for integer vectors of size 128. I was surprised not to find
> > _mm_cmplt_epi64 anywhere. Note that I can do the same for size 256, but not
> > 512, there is no corresponding intrinsic, there are only _mask versions that
> > return a mask.
>
> Let's ask Kirill (CC'd) about missing intrinsics.
We have no `_mm_cmplt_epi64' intrinsic because there's no such instruction in
Intel ISA. All we have is [V]PCMP[EQ|GT] on pre-AVX-512* and VPCMP starting from
AVX-512*.
VPCMP is able to model VPCMPLT by specifiyng corresponding immediate and we
have intrinsics for that (config/i386/avx512fintrin.h):
extern __inline __mmask16
__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
_mm512_cmplt_epu32_mask (__m512i __X, __m512i __Y)
--
Thanks, K
