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remove some useless instructions

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Originally committed as revision 5109 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Loren Merritt 19 years ago
parent 14b005d009
commit 7a5b2fa812
1 changed files with 4 additions and 18 deletions
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  1. 22
      libavcodec/i386/h264dsp_mmx.c

22
libavcodec/i386/h264dsp_mmx.c
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@ -109,12 +109,9 @@ void ff_h264_idct_dc_add_mmx2(uint8_t *dst, int16_t *block, int stride)
int dc = (block[0] + 32) >> 6;
asm volatile(
"movd %0, %%mm0 \n\t"
"pxor %%mm7, %%mm7 \n\t"
"pshufw $0, %%mm0, %%mm0 \n\t"
"pxor %%mm1, %%mm1 \n\t"
"psubw %%mm0, %%mm1 \n\t"
"pmaxsw %%mm7, %%mm0 \n\t"
"pmaxsw %%mm7, %%mm1 \n\t"
"packuswb %%mm0, %%mm0 \n\t"
"packuswb %%mm1, %%mm1 \n\t"
::"r"(dc)
@ -149,12 +146,9 @@ void ff_h264_idct8_dc_add_mmx2(uint8_t *dst, int16_t *block, int stride)
int y;
asm volatile(
"movd %0, %%mm0 \n\t"
"pxor %%mm7, %%mm7 \n\t"
"pshufw $0, %%mm0, %%mm0 \n\t"
"pxor %%mm1, %%mm1 \n\t"
"psubw %%mm0, %%mm1 \n\t"
"pmaxsw %%mm7, %%mm0 \n\t"
"pmaxsw %%mm7, %%mm1 \n\t"
"packuswb %%mm0, %%mm0 \n\t"
"packuswb %%mm1, %%mm1 \n\t"
::"r"(dc)
@ -972,7 +966,6 @@ static void OPNAME ## h264_qpel16_hv_lowpass_ ## MMX(uint8_t *dst, int16_t *tmp,
static void OPNAME ## pixels4_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, uint8_t *src8, int dstStride, int src8Stride, int h)\
{\
asm volatile(\
"pxor %%mm7, %%mm7 \n\t"\
"movq %5, %%mm6 \n\t"\
"movq (%1), %%mm0 \n\t"\
"movq 24(%1), %%mm1 \n\t"\
@ -980,10 +973,8 @@ static void OPNAME ## pixels4_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, ui
"paddw %%mm6, %%mm1 \n\t"\
"psraw $5, %%mm0 \n\t"\
"psraw $5, %%mm1 \n\t"\
"pmaxsw %%mm7, %%mm0 \n\t"\
"pmaxsw %%mm7, %%mm1 \n\t"\
"packuswb %%mm7, %%mm0 \n\t"\
"packuswb %%mm7, %%mm1 \n\t"\
"packuswb %%mm0, %%mm0 \n\t"\
"packuswb %%mm1, %%mm1 \n\t"\
PAVGB" (%0), %%mm0 \n\t"\
PAVGB" (%0,%3), %%mm1 \n\t"\
OP(%%mm0, (%2), %%mm4, d)\
@ -996,10 +987,8 @@ static void OPNAME ## pixels4_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, ui
"paddw %%mm6, %%mm1 \n\t"\
"psraw $5, %%mm0 \n\t"\
"psraw $5, %%mm1 \n\t"\
"pmaxsw %%mm7, %%mm0 \n\t"\
"pmaxsw %%mm7, %%mm1 \n\t"\
"packuswb %%mm7, %%mm0 \n\t"\
"packuswb %%mm7, %%mm1 \n\t"\
"packuswb %%mm0, %%mm0 \n\t"\
"packuswb %%mm1, %%mm1 \n\t"\
PAVGB" (%0), %%mm0 \n\t"\
PAVGB" (%0,%3), %%mm1 \n\t"\
OP(%%mm0, (%2), %%mm4, d)\
@ -1011,7 +1000,6 @@ static void OPNAME ## pixels4_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, ui
static void OPNAME ## pixels8_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, uint8_t *src8, int dstStride, int src8Stride, int h)\
{\
asm volatile(\
"pxor %%mm7, %%mm7 \n\t"\
"movq %0, %%mm6 \n\t"\
::"m"(ff_pw_16)\
);\
@ -1023,8 +1011,6 @@ static void OPNAME ## pixels8_l2_shift5_ ## MMX(uint8_t *dst, int16_t *src16, ui
"paddw %%mm6, %%mm1 \n\t"\
"psraw $5, %%mm0 \n\t"\
"psraw $5, %%mm1 \n\t"\
"pmaxsw %%mm7, %%mm0 \n\t"\
"pmaxsw %%mm7, %%mm1 \n\t"\
"packuswb %%mm1, %%mm0 \n\t"\
PAVGB" (%0), %%mm0 \n\t"\
OP(%%mm0, (%2), %%mm5, q)\

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