dsp: fix diff_bytes_mmx() with small width

Fixes Ticket1068 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-03-17 20:45:45 +01:00 · 2012-03-17 20:45:45 +01:00 · 219a6fb61c
parent 69174fad73
commit 219a6fb61c
1 changed files with 1 additions and 0 deletions
--- a/libavcodec/x86/dsputilenc_mmx.c
+++ b/libavcodec/x86/dsputilenc_mmx.c
@ -823,6 +823,7 @@ static int vsad16_mmx2(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, i

 static void diff_bytes_mmx(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int w){
    x86_reg i=0;
+    if(w>=16)
    __asm__ volatile(
        "1:                             \n\t"
        "movq  (%2, %0), %%mm0          \n\t"