x86: swscale: remove disabled code

This code has been disabled since 2003.  Nobody will ever look at
it again.

Signed-off-by: Mans Rullgard <mans@mansr.com>

diff --git a/libswscale/x86/rgb2rgb_template.c b/libswscale/x86/rgb2rgb_template.c
index 3374f45..0f2bfd0 100644 (file)
--- a/libswscale/x86/rgb2rgb_template.c
+++ b/libswscale/x86/rgb2rgb_template.c
@@ -287,7 +287,6 @@ static inline void RENAME(rgb32to16)(const uint8_t *src, uint8_t *dst, int src_s
     uint16_t *d = (uint16_t *)dst;
     end = s + src_size;
     mm_end = end - 15;
-#if 1 //is faster only if multiplies are reasonably fast (FIXME figure out on which CPUs this is faster, on Athlon it is slightly faster)
     __asm__ volatile(
         "movq           %3, %%mm5   \n\t"
         "movq           %4, %%mm6   \n\t"
@@ -322,47 +321,6 @@ static inline void RENAME(rgb32to16)(const uint8_t *src, uint8_t *dst, int src_s
         : "+r" (d), "+r"(s)
         : "r" (mm_end), "m" (mask3216g), "m" (mask3216br), "m" (mul3216)
     );
-#else
-    __asm__ volatile(PREFETCH"    %0"::"m"(*src):"memory");
-    __asm__ volatile(
-        "movq    %0, %%mm7    \n\t"
-        "movq    %1, %%mm6    \n\t"
-        ::"m"(red_16mask),"m"(green_16mask));
-    while (s < mm_end) {
-        __asm__ volatile(
-            PREFETCH"    32%1           \n\t"
-            "movd          %1, %%mm0    \n\t"
-            "movd         4%1, %%mm3    \n\t"
-            "punpckldq    8%1, %%mm0    \n\t"
-            "punpckldq   12%1, %%mm3    \n\t"
-            "movq       %%mm0, %%mm1    \n\t"
-            "movq       %%mm0, %%mm2    \n\t"
-            "movq       %%mm3, %%mm4    \n\t"
-            "movq       %%mm3, %%mm5    \n\t"
-            "psrlq         $3, %%mm0    \n\t"
-            "psrlq         $3, %%mm3    \n\t"
-            "pand          %2, %%mm0    \n\t"
-            "pand          %2, %%mm3    \n\t"
-            "psrlq         $5, %%mm1    \n\t"
-            "psrlq         $5, %%mm4    \n\t"
-            "pand       %%mm6, %%mm1    \n\t"
-            "pand       %%mm6, %%mm4    \n\t"
-            "psrlq         $8, %%mm2    \n\t"
-            "psrlq         $8, %%mm5    \n\t"
-            "pand       %%mm7, %%mm2    \n\t"
-            "pand       %%mm7, %%mm5    \n\t"
-            "por        %%mm1, %%mm0    \n\t"
-            "por        %%mm4, %%mm3    \n\t"
-            "por        %%mm2, %%mm0    \n\t"
-            "por        %%mm5, %%mm3    \n\t"
-            "psllq        $16, %%mm3    \n\t"
-            "por        %%mm3, %%mm0    \n\t"
-            MOVNTQ"     %%mm0, %0       \n\t"
-            :"=m"(*d):"m"(*s),"m"(blue_16mask):"memory");
-        d += 4;
-        s += 16;
-    }
-#endif
     __asm__ volatile(SFENCE:::"memory");
     __asm__ volatile(EMMS:::"memory");
     while (s < end) {
@@ -434,7 +392,6 @@ static inline void RENAME(rgb32to15)(const uint8_t *src, uint8_t *dst, int src_s
     uint16_t *d = (uint16_t *)dst;
     end = s + src_size;
     mm_end = end - 15;
-#if 1 //is faster only if multiplies are reasonably fast (FIXME figure out on which CPUs this is faster, on Athlon it is slightly faster)
     __asm__ volatile(
         "movq           %3, %%mm5   \n\t"
         "movq           %4, %%mm6   \n\t"
@@ -469,47 +426,6 @@ static inline void RENAME(rgb32to15)(const uint8_t *src, uint8_t *dst, int src_s
         : "+r" (d), "+r"(s)
         : "r" (mm_end), "m" (mask3215g), "m" (mask3216br), "m" (mul3215)
     );
-#else
-    __asm__ volatile(PREFETCH"    %0"::"m"(*src):"memory");
-    __asm__ volatile(
-        "movq          %0, %%mm7    \n\t"
-        "movq          %1, %%mm6    \n\t"
-        ::"m"(red_15mask),"m"(green_15mask));
-    while (s < mm_end) {
-        __asm__ volatile(
-            PREFETCH"    32%1           \n\t"
-            "movd          %1, %%mm0    \n\t"
-            "movd         4%1, %%mm3    \n\t"
-            "punpckldq    8%1, %%mm0    \n\t"
-            "punpckldq   12%1, %%mm3    \n\t"
-            "movq       %%mm0, %%mm1    \n\t"
-            "movq       %%mm0, %%mm2    \n\t"
-            "movq       %%mm3, %%mm4    \n\t"
-            "movq       %%mm3, %%mm5    \n\t"
-            "psrlq         $3, %%mm0    \n\t"
-            "psrlq         $3, %%mm3    \n\t"
-            "pand          %2, %%mm0    \n\t"
-            "pand          %2, %%mm3    \n\t"
-            "psrlq         $6, %%mm1    \n\t"
-            "psrlq         $6, %%mm4    \n\t"
-            "pand       %%mm6, %%mm1    \n\t"
-            "pand       %%mm6, %%mm4    \n\t"
-            "psrlq         $9, %%mm2    \n\t"
-            "psrlq         $9, %%mm5    \n\t"
-            "pand       %%mm7, %%mm2    \n\t"
-            "pand       %%mm7, %%mm5    \n\t"
-            "por        %%mm1, %%mm0    \n\t"
-            "por        %%mm4, %%mm3    \n\t"
-            "por        %%mm2, %%mm0    \n\t"
-            "por        %%mm5, %%mm3    \n\t"
-            "psllq        $16, %%mm3    \n\t"
-            "por        %%mm3, %%mm0    \n\t"
-            MOVNTQ"     %%mm0, %0       \n\t"
-            :"=m"(*d):"m"(*s),"m"(blue_15mask):"memory");
-        d += 4;
-        s += 16;
-    }
-#endif
     __asm__ volatile(SFENCE:::"memory");
     __asm__ volatile(EMMS:::"memory");
     while (s < end) {