optimization and gcc 4.0 bug workaround patch by (Martin Drab >drab kepler.fjfi.cvut...

Originally committed as revision 3945 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
index 6071d04..5501226 100644 (file)
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@@ -672,26 +672,22 @@ static void h263_h_loop_filter_mmx(uint8_t *src, int stride, int qscale){
         "punpcklwd %%mm0, %%mm1                \n\t"
         "punpckhwd %%mm4, %%mm3                \n\t"
         "punpckhwd %%mm0, %%mm6                \n\t"
-        "movd %%mm5, %0                        \n\t"
+        "movd %%mm5, (%0)              \n\t"
         "punpckhdq %%mm5, %%mm5                \n\t"
-        "movd %%mm5, %1                        \n\t"
-        "movd %%mm3, %2                        \n\t"
+        "movd %%mm5, (%0,%2)           \n\t"
+        "movd %%mm3, (%0,%2,2)         \n\t"
         "punpckhdq %%mm3, %%mm3                \n\t"
-        "movd %%mm3, %3                        \n\t"
-        "movd %%mm1, %4                        \n\t"
+        "movd %%mm3, (%0,%3)           \n\t"
+        "movd %%mm1, (%1)              \n\t"
         "punpckhdq %%mm1, %%mm1                \n\t"
-        "movd %%mm1, %5                        \n\t"
-        "movd %%mm6, %6                        \n\t"
+        "movd %%mm1, (%1,%2)           \n\t"
+        "movd %%mm6, (%1,%2,2)         \n\t"
         "punpckhdq %%mm6, %%mm6                \n\t"
-        "movd %%mm6, %7                        \n\t"
-        : "=m" (*(uint32_t*)(src + 0*stride)),
-          "=m" (*(uint32_t*)(src + 1*stride)),
-          "=m" (*(uint32_t*)(src + 2*stride)),
-          "=m" (*(uint32_t*)(src + 3*stride)),
-          "=m" (*(uint32_t*)(src + 4*stride)),
-          "=m" (*(uint32_t*)(src + 5*stride)),
-          "=m" (*(uint32_t*)(src + 6*stride)),
-          "=m" (*(uint32_t*)(src + 7*stride))
+        "movd %%mm6, (%1,%3)           \n\t"
+        :: "r" (src),
+           "r" (src + 4*stride),
+           "r" ((long)   stride ),
+           "r" ((long)(3*stride))
     );
 }