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fix ARMv6 FASTDIV for divisor <=2

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Originally committed as revision 14481 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2008-07-31 02:38:40 +00:00
parent 22e7d9cc25
commit c8fd5da42f
1 changed files with 4 additions and 1 deletions
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5
libavutil/internal.h
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@ -150,7 +150,10 @@ extern const uint32_t ff_inverse[256];
static inline av_const int FASTDIV(int a, int b) static inline av_const int FASTDIV(int a, int b)
{ {
int r; int r;
asm volatile("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(ff_inverse[b])); asm volatile("cmp %2, #0 \n\t"
"smmul %0, %1, %2 \n\t"
"rsblt %0, %0, #0 \n\t"
: "=r"(r) : "r"(a), "r"(ff_inverse[b]));
return r; return r;
} }
#elif defined(ARCH_ARMV4L) #elif defined(ARCH_ARMV4L)