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h264dsp: merge some asm blocks 

Some code was initializing some xmm registers in one asm block and using them
in the following block, assuming they wouldn't be changed in between blocks.

Originally committed as revision 25568 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2010-10-25 18:02:02 +00:00
parent 3ab354d777
commit b32c9ca9a3
1 changed files with 20 additions and 26 deletions
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46
libavcodec/x86/h264_qpel_mmx.c
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@ -299,11 +299,8 @@ static av_noinline void OPNAME ## h264_qpel8_h_lowpass_l2_ ## MMX(uint8_t *dst,
int h=8;\
__asm__ volatile(\
"pxor %%mm7, %%mm7 \n\t"\
"movq %0, %%mm6 \n\t"\
:: "m"(ff_pw_5)\
);\
do{\
__asm__ volatile(\
"movq "MANGLE(ff_pw_5)", %%mm6\n\t"\
"1: \n\t"\
"movq (%0), %%mm0 \n\t"\
"movq 1(%0), %%mm2 \n\t"\
"movq %%mm0, %%mm1 \n\t"\
@ -336,7 +333,7 @@ static av_noinline void OPNAME ## h264_qpel8_h_lowpass_l2_ ## MMX(uint8_t *dst,
"punpcklbw %%mm7, %%mm5 \n\t"\
"paddw %%mm3, %%mm2 \n\t"\
"paddw %%mm5, %%mm4 \n\t"\
"movq %5, %%mm5 \n\t"\
"movq "MANGLE(ff_pw_16)", %%mm5\n\t"\
"paddw %%mm5, %%mm2 \n\t"\
"paddw %%mm5, %%mm4 \n\t"\
"paddw %%mm2, %%mm0 \n\t"\
@ -347,15 +344,15 @@ static av_noinline void OPNAME ## h264_qpel8_h_lowpass_l2_ ## MMX(uint8_t *dst,
"packuswb %%mm1, %%mm0 \n\t"\
PAVGB" %%mm4, %%mm0 \n\t"\
OP(%%mm0, (%1),%%mm5, q)\
"add %4, %0 \n\t"\
"add %4, %1 \n\t"\
"add %3, %2 \n\t"\
: "+a"(src), "+c"(dst), "+d"(src2)\
: "D"((x86_reg)src2Stride), "S"((x86_reg)dstStride),\
"m"(ff_pw_16)\
"add %5, %0 \n\t"\
"add %5, %1 \n\t"\
"add %4, %2 \n\t"\
"decl %3 \n\t"\
"jg 1b \n\t"\
: "+a"(src), "+c"(dst), "+d"(src2), "+g"(h)\
: "D"((x86_reg)src2Stride), "S"((x86_reg)dstStride)\
: "memory"\
);\
}while(--h);\
}\
\
static av_noinline void OPNAME ## h264_qpel8or16_v_lowpass_ ## MMX(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int h){\
@ -697,11 +694,8 @@ static av_noinline void OPNAME ## h264_qpel8_h_lowpass_l2_ ## MMX(uint8_t *dst,
int h=8;\
__asm__ volatile(\
"pxor %%xmm7, %%xmm7 \n\t"\
"movdqa %0, %%xmm6 \n\t"\
:: "m"(ff_pw_5)\
);\
do{\
__asm__ volatile(\
"movdqa "MANGLE(ff_pw_5)", %%xmm6\n\t"\
"1: \n\t"\
"lddqu -2(%0), %%xmm1 \n\t"\
"movdqa %%xmm1, %%xmm0 \n\t"\
"punpckhbw %%xmm7, %%xmm1 \n\t"\
@ -721,22 +715,22 @@ static av_noinline void OPNAME ## h264_qpel8_h_lowpass_l2_ ## MMX(uint8_t *dst,
"psllw $2, %%xmm2 \n\t"\
"movq (%2), %%xmm3 \n\t"\
"psubw %%xmm1, %%xmm2 \n\t"\
"paddw %5, %%xmm0 \n\t"\
"paddw "MANGLE(ff_pw_16)", %%xmm0\n\t"\
"pmullw %%xmm6, %%xmm2 \n\t"\
"paddw %%xmm0, %%xmm2 \n\t"\
"psraw $5, %%xmm2 \n\t"\
"packuswb %%xmm2, %%xmm2 \n\t"\
"pavgb %%xmm3, %%xmm2 \n\t"\
OP(%%xmm2, (%1), %%xmm4, q)\
"add %4, %0 \n\t"\
"add %4, %1 \n\t"\
"add %3, %2 \n\t"\
: "+a"(src), "+c"(dst), "+d"(src2)\
: "D"((x86_reg)src2Stride), "S"((x86_reg)dstStride),\
"m"(ff_pw_16)\
"add %5, %0 \n\t"\
"add %5, %1 \n\t"\
"add %4, %2 \n\t"\
"decl %3 \n\t"\
"jg 1b \n\t"\
: "+a"(src), "+c"(dst), "+d"(src2), "+g"(h)\
: "D"((x86_reg)src2Stride), "S"((x86_reg)dstStride)\
: "memory"\
);\
}while(--h);\
}\
QPEL_H264_H16_XMM(OPNAME, OP, MMX)\
\