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motion_est_mmx: prefer xmm registers below xmm6 when they are available

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Originally committed as revision 25612 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2010-10-31 15:07:21 +00:00
parent 5d543a3d13
commit 05c018078c
1 changed files with 6 additions and 6 deletions
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12
libavcodec/x86/motion_est_mmx.c
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@ -94,15 +94,15 @@ static int sad16_sse2(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)
{
int ret;
__asm__ volatile(
"pxor %%xmm6, %%xmm6 \n\t"
"pxor %%xmm2, %%xmm2 \n\t"
ASMALIGN(4)
"1: \n\t"
"movdqu (%1), %%xmm0 \n\t"
"movdqu (%1, %3), %%xmm1 \n\t"
"psadbw (%2), %%xmm0 \n\t"
"psadbw (%2, %3), %%xmm1 \n\t"
"paddw %%xmm0, %%xmm6 \n\t"
"paddw %%xmm1, %%xmm6 \n\t"
"paddw %%xmm0, %%xmm2 \n\t"
"paddw %%xmm1, %%xmm2 \n\t"
"lea (%1,%3,2), %1 \n\t"
"lea (%2,%3,2), %2 \n\t"
"sub $2, %0 \n\t"
@ -111,9 +111,9 @@ static int sad16_sse2(void *v, uint8_t *blk2, uint8_t *blk1, int stride, int h)
: "r" ((x86_reg)stride)
);
__asm__ volatile(
"movhlps %%xmm6, %%xmm0 \n\t"
"paddw %%xmm0, %%xmm6 \n\t"
"movd %%xmm6, %0 \n\t"
"movhlps %%xmm2, %%xmm0 \n\t"
"paddw %%xmm0, %%xmm2 \n\t"
"movd %%xmm2, %0 \n\t"
: "=r"(ret)
);
return ret;