mirror of https://github.com/mpv-player/mpv
moves invariant code (chiefly MMX register initialization) out of loops as well as eliminating some memory accesses within the inner loop.
Patch by Zuxy Meng < zuxy POIS meng AH gmail POIS com > Original thread: Date: Mon, 12 Jun 2006 00:31:53 -0700 (PDT) Subject [MPlayer-dev-eng] [PATCH] Loop invariant motion in libvo/osd_template.c git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@18686 b3059339-0415-0410-9bf9-f77b7e298cf2
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gpoirier
parent
2831b49bb5
commit
68a1de942c
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@ -31,6 +31,15 @@ static inline void RENAME(vo_draw_alpha_yv12)(int w,int h, unsigned char* src, u
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int y;
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#if defined(FAST_OSD) && !defined(HAVE_MMX)
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w=w>>1;
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#endif
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#ifdef HAVE_MMX
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asm volatile(
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm4\n\t"
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"movq %%mm5, %%mm7\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::);
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#endif
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for(y=0;y<h;y++){
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register int x;
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@ -39,11 +48,6 @@ static inline void RENAME(vo_draw_alpha_yv12)(int w,int h, unsigned char* src, u
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PREFETCHW" %0\n\t"
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PREFETCH" %1\n\t"
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PREFETCH" %2\n\t"
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// "pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm4\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::"m"(*dstbase),"m"(*srca),"m"(*src):"memory");
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for(x=0;x<w;x+=8){
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asm volatile(
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@ -58,7 +62,7 @@ static inline void RENAME(vo_draw_alpha_yv12)(int w,int h, unsigned char* src, u
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"pand %%mm4, %%mm0\n\t" //0Y0Y0Y0Y
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"psrlw $8, %%mm1\n\t" //0Y0Y0Y0Y
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"movq %1, %%mm2\n\t" //srca HGFEDCBA
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"paddb "MANGLE(bFF)", %%mm2\n\t"
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"paddb %%mm7, %%mm2\n\t"
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"movq %%mm2, %%mm3\n\t"
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"pand %%mm4, %%mm2\n\t" //0G0E0C0A
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"psrlw $8, %%mm3\n\t" //0H0F0D0B
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@ -97,6 +101,16 @@ static inline void RENAME(vo_draw_alpha_yuy2)(int w,int h, unsigned char* src, u
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int y;
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#if defined(FAST_OSD) && !defined(HAVE_MMX)
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w=w>>1;
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#endif
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#ifdef HAVE_MMX
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asm volatile(
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm6\n\t"
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"movq %%mm5, %%mm4\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::);
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#endif
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for(y=0;y<h;y++){
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register int x;
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@ -105,11 +119,6 @@ static inline void RENAME(vo_draw_alpha_yuy2)(int w,int h, unsigned char* src, u
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PREFETCHW" %0\n\t"
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PREFETCH" %1\n\t"
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PREFETCH" %2\n\t"
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm4\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::"m"(*dstbase),"m"(*srca),"m"(*src));
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for(x=0;x<w;x+=4){
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asm volatile(
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@ -123,7 +132,7 @@ static inline void RENAME(vo_draw_alpha_yuy2)(int w,int h, unsigned char* src, u
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"movq %%mm0, %%mm1\n\t"
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"pand %%mm4, %%mm0\n\t" //0Y0Y0Y0Y
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"movd %%eax, %%mm2\n\t" //srca 0000DCBA
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"paddb "MANGLE(bFF)", %%mm2\n\t"
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"paddb %%mm6, %%mm2\n\t"
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"punpcklbw %%mm7, %%mm2\n\t" //srca 0D0C0B0A
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"pmullw %%mm2, %%mm0\n\t"
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"psrlw $8, %%mm0\n\t"
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@ -186,6 +195,12 @@ static inline void RENAME(vo_draw_alpha_uyvy)(int w,int h, unsigned char* src, u
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static inline void RENAME(vo_draw_alpha_rgb24)(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride){
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int y;
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#ifdef HAVE_MMX
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asm volatile(
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm6, %%mm6\n\t" // F..F
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::);
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#endif
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for(y=0;y<h;y++){
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register unsigned char *dst = dstbase;
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register int x;
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@ -195,8 +210,6 @@ static inline void RENAME(vo_draw_alpha_rgb24)(int w,int h, unsigned char* src,
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PREFETCHW" %0\n\t"
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PREFETCH" %1\n\t"
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PREFETCH" %2\n\t"
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm6, %%mm6\n\t" // F..F
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::"m"(*dst),"m"(*srca),"m"(*src):"memory");
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for(x=0;x<w;x+=2){
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if(srca[x] || srca[x+1])
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@ -293,6 +306,22 @@ static inline void RENAME(vo_draw_alpha_rgb32)(int w,int h, unsigned char* src,
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#ifdef WORDS_BIGENDIAN
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dstbase++;
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#endif
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#ifdef HAVE_MMX
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#ifdef HAVE_3DNOW
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asm volatile(
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm6, %%mm6\n\t" // F..F
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::);
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#else /* HAVE_3DNOW */
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asm volatile(
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm4\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::);
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#endif /* HAVE_3DNOW */
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#endif /* HAVE_MMX */
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for(y=0;y<h;y++){
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register int x;
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#if defined(ARCH_X86) || defined(ARCH_X86_64)
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@ -302,8 +331,6 @@ static inline void RENAME(vo_draw_alpha_rgb32)(int w,int h, unsigned char* src,
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PREFETCHW" %0\n\t"
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PREFETCH" %1\n\t"
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PREFETCH" %2\n\t"
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm6, %%mm6\n\t" // F..F
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::"m"(*dstbase),"m"(*srca),"m"(*src):"memory");
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for(x=0;x<w;x+=2){
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if(srca[x] || srca[x+1])
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@ -339,11 +366,6 @@ static inline void RENAME(vo_draw_alpha_rgb32)(int w,int h, unsigned char* src,
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PREFETCHW" %0\n\t"
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PREFETCH" %1\n\t"
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PREFETCH" %2\n\t"
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"pxor %%mm7, %%mm7\n\t"
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"pcmpeqb %%mm5, %%mm5\n\t" // F..F
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"movq %%mm5, %%mm4\n\t"
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"psllw $8, %%mm5\n\t" //FF00FF00FF00
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"psrlw $8, %%mm4\n\t" //00FF00FF00FF
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::"m"(*dstbase),"m"(*srca),"m"(*src):"memory");
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for(x=0;x<w;x+=4){
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asm volatile(
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