On 07/31/2012 06:17 PM, Diego Biurrun wrote:
> ---
>  libavcodec/x86/ac3dsp.asm |    3 ---
>  libavutil/x86/x86util.asm |   10 +++++-----
>  2 files changed, 5 insertions(+), 8 deletions(-)
> 
> diff --git a/libavcodec/x86/ac3dsp.asm b/libavcodec/x86/ac3dsp.asm
> index 841de90..8a16167 100644
> --- a/libavcodec/x86/ac3dsp.asm
> +++ b/libavcodec/x86/ac3dsp.asm
> @@ -63,12 +63,10 @@ cglobal ac3_exponent_min, 3, 4, 2, exp, reuse_blks, expn, 
> offset
>      REP_RET
>  %endmacro
>  
> -%define PMINUB PMINUB_MMX
>  %define LOOP_ALIGN
>  INIT_MMX mmx
>  AC3_EXPONENT_MIN
>  %if HAVE_MMXEXT
> -%define PMINUB PMINUB_MMXEXT
>  %define LOOP_ALIGN ALIGN 16
>  INIT_MMX mmxext
>  AC3_EXPONENT_MIN
> @@ -77,7 +75,6 @@ AC3_EXPONENT_MIN
>  INIT_XMM sse2
>  AC3_EXPONENT_MIN
>  %endif
> -%undef PMINUB
>  %undef LOOP_ALIGN
>  
>  
> ;-----------------------------------------------------------------------------
> diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm
> index 606659c..27eca3a 100644
> --- a/libavutil/x86/x86util.asm
> +++ b/libavutil/x86/x86util.asm
> @@ -528,14 +528,14 @@
>      movh  [%7+%8], %4
>  %endmacro
>  
> -%macro PMINUB_MMX 3 ; dst, src, tmp
> +%macro PMINUB 3 ; dst, src, ignored
> +%if cpuflag(mmxext)
> +    pminub   %1, %2
> +%else ; dst, src, tmp
>      mova     %3, %1
>      psubusb  %3, %2
>      psubb    %1, %3
> -%endmacro
> -
> -%macro PMINUB_MMXEXT 3 ; dst, src, ignored
> -    pminub   %1, %2
> +%endif
>  %endmacro
>  
>  %macro SPLATW 2-3 0

The mmxext version also applies to sse2 but using xmm regs instead of
mmx. The macro needs to check both flags.

-Justin
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