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replace MULL with asm too, no significnat speedup but its probably better to not take any chances, some versions of gcc will almost certainly mess it up too if they can

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Originally committed as revision 6049 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2006-08-22 12:07:02 +00:00
parent 47a0cd7408
commit f617adedc8
1 changed files with 7 additions and 1 deletions
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8
libavcodec/mpegaudiodec.c
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@ -44,7 +44,13 @@
#define FRAC_ONE (1 << FRAC_BITS)
#ifdef ARCH_X86
# define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
# define MULL(ra, rb) \
({ int rt, dummy; asm (\
"imull %3 \n\t"\
"shrdl %4, %%edx, %%eax \n\t"\
: "=a"(rt), "=d"(dummy)\
: "a" (ra), "rm" (rb), "i"(FRAC_BITS));\
rt; })
# define MUL64(ra, rb) \
({ int64_t rt; asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb)); rt; })
# define MULH(ra, rb) \