[vlc-devel] VLC_MMX and VLC_SSE function attribute macros breaks outside GCC

[Francois Cartegnie]

Le 04/03/2012 23:55, Rafaël Carré a écrit :
> Wouldn't the asm code fail to build if MMX was not enabled ?
> 
> Compiler wouldn't know what are xmm* in the constraint.
> That mean at least compiler would choke on those functions until user
> adds the correct flags:
> 
> #elif defined(__SUNPRO_C)
> # define VLC_MMX

It's probably better to rely on CAN_COMPILE_MMX && HAVE_MMX set by
autoconf, but...

fcartegn at opensolaris:~/vlc$ isainfo -x
amd64: tscp ahf sse3 sse2 sse fxsr amd_3dnowx amd_3dnow mmx cmov
amd_sysc cx8 tsc fpu
i386: tscp ahf sse3 sse2 sse fxsr amd_3dnowx amd_3dnow mmx cmov amd_sysc
cx8 tsc fpu

For -xtarget=native cpu flags (should enable everything), I have from
autoconf:
fcartegn at opensolaris:~/vlc$ grep -E "MMX|SSE" config.h | grep -v "/\*"
#define CAN_COMPILE_MMX 1
#define CAN_COMPILE_MMXEXT 1
#define CAN_COMPILE_SSE3 1
#define CAN_COMPILE_SSE4A 1
#define CAN_COMPILE_SSE4_1 1
#define CAN_COMPILE_SSE4_2 1
#define CAN_COMPILE_SSSE3 1

Missing the HAVE_MMX && HAVE_SSE :/

Francois