using fewer registers ... to workaround something

Originally committed as revision 7991 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

diff --git a/postproc/postprocess_template.c b/postproc/postprocess_template.c
index efaaad7..3289bb1 100644 (file)
--- a/postproc/postprocess_template.c
+++ b/postproc/postprocess_template.c
@@ -892,11 +892,8 @@ src-=8;
 */
 #elif defined (HAVE_MMX)
        src+= stride*4;
-
        asm volatile(
                "pxor %%mm7, %%mm7                              \n\t"
-               "leal (%0, %1), %%eax                           \n\t"
-               "leal (%%eax, %1, 4), %%edx                     \n\t"
                "leal -40(%%esp), %%ecx                         \n\t" // make space for 4 8-byte vars
                "andl $0xFFFFFFF8, %%ecx                        \n\t" // align
 //     0       1       2       3       4       5       6       7
@@ -908,12 +905,13 @@ src-=8;
                "punpcklbw %%mm7, %%mm0                         \n\t" // low part of line 0
                "punpckhbw %%mm7, %%mm1                         \n\t" // high part of line 0
 
-               "movq (%%eax), %%mm2                            \n\t"
+               "movq (%0, %1), %%mm2                           \n\t"
+               "leal (%0, %1, 2), %%eax                        \n\t"
                "movq %%mm2, %%mm3                              \n\t"
                "punpcklbw %%mm7, %%mm2                         \n\t" // low part of line 1
                "punpckhbw %%mm7, %%mm3                         \n\t" // high part of line 1
 
-               "movq (%%eax, %1), %%mm4                        \n\t"
+               "movq (%%eax), %%mm4                            \n\t"
                "movq %%mm4, %%mm5                              \n\t"
                "punpcklbw %%mm7, %%mm4                         \n\t" // low part of line 2
                "punpckhbw %%mm7, %%mm5                         \n\t" // high part of line 2
@@ -930,7 +928,7 @@ src-=8;
                "psubw %%mm2, %%mm0                             \n\t" // 2L0 - 5L1 + 5L2
                "psubw %%mm3, %%mm1                             \n\t" // 2H0 - 5H1 + 5H2
 
-               "movq (%%eax, %1, 2), %%mm2                     \n\t"
+               "movq (%%eax, %1), %%mm2                        \n\t"
                "movq %%mm2, %%mm3                              \n\t"
                "punpcklbw %%mm7, %%mm2                         \n\t" // L3
                "punpckhbw %%mm7, %%mm3                         \n\t" // H3
@@ -942,7 +940,7 @@ src-=8;
                "movq %%mm0, (%%ecx)                            \n\t" // 2L0 - 5L1 + 5L2 - 2L3
                "movq %%mm1, 8(%%ecx)                           \n\t" // 2H0 - 5H1 + 5H2 - 2H3
 
-               "movq (%0, %1, 4), %%mm0                        \n\t"
+               "movq (%%eax, %1, 2), %%mm0                     \n\t"
                "movq %%mm0, %%mm1                              \n\t"
                "punpcklbw %%mm7, %%mm0                         \n\t" // L4
                "punpckhbw %%mm7, %%mm1                         \n\t" // H4
@@ -956,12 +954,13 @@ src-=8;
                "psubw %%mm2, %%mm4                             \n\t" // 2L2 - L3 + L4
                "psubw %%mm3, %%mm5                             \n\t" // 2H2 - H3 + H4
 
+               "leal (%%eax, %1), %0                           \n\t"
                "psllw $2, %%mm2                                \n\t" // 4L3 - 4L4
                "psllw $2, %%mm3                                \n\t" // 4H3 - 4H4
                "psubw %%mm2, %%mm4                             \n\t" // 2L2 - 5L3 + 5L4
                "psubw %%mm3, %%mm5                             \n\t" // 2H2 - 5H3 + 5H4
 //50 opcodes so far
-               "movq (%%edx), %%mm2                            \n\t"
+               "movq (%0, %1, 2), %%mm2                        \n\t"
                "movq %%mm2, %%mm3                              \n\t"
                "punpcklbw %%mm7, %%mm2                         \n\t" // L5
                "punpckhbw %%mm7, %%mm3                         \n\t" // H5
@@ -970,10 +969,10 @@ src-=8;
                "psubw %%mm2, %%mm4                             \n\t" // 2L2 - 5L3 + 5L4 - 2L5
                "psubw %%mm3, %%mm5                             \n\t" // 2H2 - 5H3 + 5H4 - 2H5
 
-               "movq (%%edx, %1), %%mm6                        \n\t"
+               "movq (%%eax, %1, 4), %%mm6                     \n\t"
                "punpcklbw %%mm7, %%mm6                         \n\t" // L6
                "psubw %%mm6, %%mm2                             \n\t" // L5 - L6
-               "movq (%%edx, %1), %%mm6                        \n\t"
+               "movq (%%eax, %1, 4), %%mm6                     \n\t"
                "punpckhbw %%mm7, %%mm6                         \n\t" // H6
                "psubw %%mm6, %%mm3                             \n\t" // H5 - H6
 
@@ -987,7 +986,7 @@ src-=8;
                "psubw %%mm2, %%mm0                             \n\t" // 2L4 - 5L5 + 5L6
                "psubw %%mm3, %%mm1                             \n\t" // 2H4 - 5H5 + 5H6
 
-               "movq (%%edx, %1, 2), %%mm2                     \n\t"
+               "movq (%0, %1, 4), %%mm2                        \n\t"
                "movq %%mm2, %%mm3                              \n\t"
                "punpcklbw %%mm7, %%mm2                         \n\t" // L7
                "punpckhbw %%mm7, %%mm3                         \n\t" // H7
@@ -1110,16 +1109,16 @@ src-=8;
                "psubw %%mm6, %%mm4                             \n\t"
                "psubw %%mm7, %%mm5                             \n\t"
                "packsswb %%mm5, %%mm4                          \n\t"
-               "movq (%%eax, %1, 2), %%mm0                     \n\t"
+               "movq (%0), %%mm0                               \n\t"
                "paddb   %%mm4, %%mm0                           \n\t"
-               "movq %%mm0, (%%eax, %1, 2)                     \n\t"
-               "movq (%0, %1, 4), %%mm0                        \n\t"
+               "movq %%mm0, (%0)                               \n\t"
+               "movq (%0, %1), %%mm0                           \n\t"
                "psubb %%mm4, %%mm0                             \n\t"
-               "movq %%mm0, (%0, %1, 4)                        \n\t"
+               "movq %%mm0, (%0, %1)                           \n\t"
 
-               :
-               : "r" (src), "r" (stride), "m" (c->pQPb)
-               : "%eax", "%edx", "%ecx"
+               : "+r" (src)
+               : "r" (stride), "m" (c->pQPb)
+               : "%eax", "%ecx"
        );
 #else
        const int l1= stride;