[PING^2 PATCH] rs6000: Add Power10 optimization for most _mm_movemask*

Paul A. Clarke pc@us.ibm.com
Fri Nov 19 02:26:06 GMT 2021


On Mon, Nov 08, 2021 at 11:42:56AM -0600, Paul A. Clarke via Gcc-patches wrote:
> Gentle ping...

Gentle re-ping.

> On Thu, Oct 21, 2021 at 12:22:12PM -0500, Paul A. Clarke via Gcc-patches wrote:
> > Power10 ISA added `vextract*` instructions which are realized in the
> > `vec_extractm` instrinsic.
> > 
> > Use `vec_extractm` for `_mm_movemask_ps`, `_mm_movemask_pd`, and
> > `_mm_movemask_epi8` compatibility intrinsics, when `_ARCH_PWR10`.
> > 
> > 2021-10-21  Paul A. Clarke  <pc@us.ibm.com>
> > 
> > gcc
> > 	* config/rs6000/xmmintrin.h (_mm_movemask_ps): Use vec_extractm
> > 	when _ARCH_PWR10.
> > 	* config/rs6000/emmintrin.h (_mm_movemask_pd): Likewise.
> > 	(_mm_movemask_epi8): Likewise.
> > ---
> > Tested on Power10 powerpc64le-linux (compiled with and without
> > `-mcpu=power10`).
> > 
> > OK for trunk?
> > 
> >  gcc/config/rs6000/emmintrin.h | 8 ++++++++
> >  gcc/config/rs6000/xmmintrin.h | 4 ++++
> >  2 files changed, 12 insertions(+)
> > 
> > diff --git a/gcc/config/rs6000/emmintrin.h b/gcc/config/rs6000/emmintrin.h
> > index 32ad72b4cc35..ab16c13c379e 100644
> > --- a/gcc/config/rs6000/emmintrin.h
> > +++ b/gcc/config/rs6000/emmintrin.h
> > @@ -1233,6 +1233,9 @@ _mm_loadl_pd (__m128d __A, double const *__B)
> >  extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
> >  _mm_movemask_pd (__m128d  __A)
> >  {
> > +#ifdef _ARCH_PWR10
> > +  return vec_extractm ((__v2du) __A);
> > +#else
> >    __vector unsigned long long result;
> >    static const __vector unsigned int perm_mask =
> >      {
> > @@ -1252,6 +1255,7 @@ _mm_movemask_pd (__m128d  __A)
> >  #else
> >    return result[0];
> >  #endif
> > +#endif /* !_ARCH_PWR10 */
> >  }
> >  #endif /* _ARCH_PWR8 */
> >  
> > @@ -2030,6 +2034,9 @@ _mm_min_epu8 (__m128i __A, __m128i __B)
> >  extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
> >  _mm_movemask_epi8 (__m128i __A)
> >  {
> > +#ifdef _ARCH_PWR10
> > +  return vec_extractm ((__v16qu) __A);
> > +#else
> >    __vector unsigned long long result;
> >    static const __vector unsigned char perm_mask =
> >      {
> > @@ -2046,6 +2053,7 @@ _mm_movemask_epi8 (__m128i __A)
> >  #else
> >    return result[0];
> >  #endif
> > +#endif /* !_ARCH_PWR10 */
> >  }
> >  #endif /* _ARCH_PWR8 */
> >  
> > diff --git a/gcc/config/rs6000/xmmintrin.h b/gcc/config/rs6000/xmmintrin.h
> > index ae1a33e8d95b..4c093fd1d5ae 100644
> > --- a/gcc/config/rs6000/xmmintrin.h
> > +++ b/gcc/config/rs6000/xmmintrin.h
> > @@ -1352,6 +1352,9 @@ _mm_storel_pi (__m64 *__P, __m128 __A)
> >  extern __inline int __attribute__((__gnu_inline__, __always_inline__, __artificial__))
> >  _mm_movemask_ps (__m128  __A)
> >  {
> > +#ifdef _ARCH_PWR10
> > +  return vec_extractm ((vector unsigned int) __A);
> > +#else
> >    __vector unsigned long long result;
> >    static const __vector unsigned int perm_mask =
> >      {
> > @@ -1371,6 +1374,7 @@ _mm_movemask_ps (__m128  __A)
> >  #else
> >    return result[0];
> >  #endif
> > +#endif /* !_ARCH_PWR10 */
> >  }
> >  #endif /* _ARCH_PWR8 */
> >  
> > -- 
> > 2.27.0
> > 


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