Re: [pygame] transform module not MMX

[Lenard Lindstrom <len-l@xxxxxxxxx>]

Lenard Lindstrom wrote:
> The assembler code in the transform module is not MMX as advertised. 
> It contains at least one SSE instruction: PSHUFW .

This is a patch for SVN transform.c that removes the offensive SSE 
instructions when the macro NO_SSE is defined.

--
Lenard Lindstrom
<len-l@xxxxxxxxx>

31a32,42
> /*  mmx/sse assembly sequence to dumplicate the first word in an mmx register. */
> #if defined(NO_SSE)
> #define PSHUFW_0(mmxregno)   \
>   " punpcklwd        %%mm" #mmxregno ", %%mm" #mmxregno ";"   \
>   " punpckldq        %%mm" #mmxregno ", %%mm" #mmxregno ";"
> #else
> #define PSHUFW_O(mmxregno)   \
>   " pshufw       $0, %%mm" #mmxregno ", %%mm" #mmxregno ";"
> #endif
> 
> 
1026c1037
<         " pshufw    $0, %%mm7,      %%mm7;           "
---
> 	PSHUFW_0(7)
1043c1054
<         " pshufw    $0, %%mm2,      %%mm2;           "
---
> 	PSHUFW_0(2)
1077c1088
<         " pshufw    $0, %%mm7,      %%mm7;           "
---
>         PSHUFW_0(7)
1094c1105
<         " pshufw    $0, %%mm2,      %%mm2;           "
---
>         PSHUFW_0(2)
1210c1221
<         " pshufw    $0, %%mm7,      %%mm7;           "
---
>         PSHUFW_0(7)
1232c1243
<         " pshufw    $0, %%mm1,      %%mm1;           "
---
>         PSHUFW_0(1)
1270c1281
<         " pshufw    $0, %%mm7,      %%mm7;           "
---
>         PSHUFW_0(7)
1292c1303
<         " pshufw    $0, %%mm1,      %%mm1;           "
---
>         PSHUFW_0(1)
1535,1536c1546,1547
<              " pshufw      $0, %%mm1, %%mm1;                      "
<              " pshufw      $0, %%mm2, %%mm2;                      "
---
>              PSHUFW_0(1)
>              PSHUFW_0(2)
1564,1565c1575,1576
<              " pshufw      $0, %%mm1, %%mm1;                      "
<              " pshufw      $0, %%mm2, %%mm2;                      "
---
>              PSHUFW_0(1)
>              PSHUFW_0(2)