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Fix MMX rgb24 to yuv conversion with gcc 4.6

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When built with gcc 4.6, the MMX rgb24 to yuv conversion gives
wrong output.  The compiler produces this warning:

libswscale/swscale_template.c:1885:5: warning: use of memory input without lvalue in asm operand 4 is deprecated

Changing the memory operand to a register makes it work.

Signed-off-by: Mans Rullgard <mans@mansr.com>
oldabi
Mans Rullgard 14 years ago
parent 44b1120724
commit f344903ca5
1 changed files with 8 additions and 8 deletions
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  1. 16
      libswscale/swscale_template.c

16
libswscale/swscale_template.c
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@ -1883,7 +1883,7 @@ static inline void RENAME(bgr24ToY_mmx)(uint8_t *dst, const uint8_t *src, long w
static inline void RENAME(bgr24ToUV_mmx)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, long width, enum PixelFormat srcFormat)
{
__asm__ volatile(
"movq 24+%4, %%mm6 \n\t"
"movq 24(%4), %%mm6 \n\t"
"mov %3, %%"REG_a" \n\t"
"pxor %%mm7, %%mm7 \n\t"
"1: \n\t"
@ -1894,9 +1894,9 @@ static inline void RENAME(bgr24ToUV_mmx)(uint8_t *dstU, uint8_t *dstV, const uin
"punpcklbw %%mm7, %%mm1 \n\t"
"movq %%mm0, %%mm2 \n\t"
"movq %%mm1, %%mm3 \n\t"
"pmaddwd %4, %%mm0 \n\t"
"pmaddwd 8+%4, %%mm1 \n\t"
"pmaddwd 16+%4, %%mm2 \n\t"
"pmaddwd (%4), %%mm0 \n\t"
"pmaddwd 8(%4), %%mm1 \n\t"
"pmaddwd 16(%4), %%mm2 \n\t"
"pmaddwd %%mm6, %%mm3 \n\t"
"paddd %%mm1, %%mm0 \n\t"
"paddd %%mm3, %%mm2 \n\t"
@ -1908,9 +1908,9 @@ static inline void RENAME(bgr24ToUV_mmx)(uint8_t *dstU, uint8_t *dstV, const uin
"punpcklbw %%mm7, %%mm3 \n\t"
"movq %%mm1, %%mm4 \n\t"
"movq %%mm3, %%mm5 \n\t"
"pmaddwd %4, %%mm1 \n\t"
"pmaddwd 8+%4, %%mm3 \n\t"
"pmaddwd 16+%4, %%mm4 \n\t"
"pmaddwd (%4), %%mm1 \n\t"
"pmaddwd 8(%4), %%mm3 \n\t"
"pmaddwd 16(%4), %%mm4 \n\t"
"pmaddwd %%mm6, %%mm5 \n\t"
"paddd %%mm3, %%mm1 \n\t"
"paddd %%mm5, %%mm4 \n\t"
@ -1933,7 +1933,7 @@ static inline void RENAME(bgr24ToUV_mmx)(uint8_t *dstU, uint8_t *dstV, const uin
"add $4, %%"REG_a" \n\t"
" js 1b \n\t"
: "+r" (src)
: "r" (dstU+width), "r" (dstV+width), "g" ((x86_reg)-width), "m"(ff_bgr24toUV[srcFormat == PIX_FMT_RGB24][0])
: "r" (dstU+width), "r" (dstV+width), "g" ((x86_reg)-width), "r"(ff_bgr24toUV[srcFormat == PIX_FMT_RGB24])
: "%"REG_a
);
}

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