On Fri, Feb 24, 2012 at 10:53:35PM -0500, Matt Turner wrote:
> The x86/amd64 mmintrin.h provides the _mm_empty intrinsic for the 'emms'
> MMX instruction. Although ARM does not need such an instruction, we
> should provide an empty _mm_empty function nonetheless for source
> compatibility.
OK for 4.8 and after your copyright assignment has been
sorted.
Ramana
>
> 2012-02-24 Matt Turner <matts...@gmail.com>
>
> * config/arm/mmintrin.h (_mm_empty): New.
> ---
> gcc/config/arm/mmintrin.h | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/gcc/config/arm/mmintrin.h b/gcc/config/arm/mmintrin.h
> index 2cc500d..ea73bf1 100644
> --- a/gcc/config/arm/mmintrin.h
> +++ b/gcc/config/arm/mmintrin.h
> @@ -32,6 +32,12 @@ typedef int __v2si __attribute__ ((vector_size (8)));
> typedef short __v4hi __attribute__ ((vector_size (8)));
> typedef char __v8qi __attribute__ ((vector_size (8)));
>
> +/* Provided for source compatibility with MMX. */
> +extern __inline void __attribute__((__gnu_inline__, __always_inline__,
> __artificial__))
> +_mm_empty (void)
> +{
> +}
> +
> /* "Convert" __m64 and __int64 into each other. */
> static __inline __m64
> _mm_cvtsi64_m64 (__int64 __i)
> @@ -1248,6 +1254,7 @@ _m_from_int (int __a)
> #define _m_psadzbw _mm_sadz_pu8
> #define _m_psadzwd _mm_sadz_pu16
> #define _m_paligniq _mm_align_si64
> +#define _m_empty _mm_empty
> #define _m_cvt_si2pi _mm_cvtsi64_m64
> #define _m_cvt_pi2si _mm_cvtm64_si64
>
> --
> 1.7.3.4
>
