replace MULL with asm too, no significnat speedup but its probably better to not...

Originally committed as revision 6049 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index 5ad8c69a52a7ae633021fb18208aecedfef82d2d..55276e3b584517b70959168a8433e43c30d492e4 100644 (file)
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -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) \