diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2007-08-26 08:31:55 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2007-08-26 08:31:55 +0000 |
| commit | c90762766a501b39c353f3b0bce9279e447a0d96 (patch) | |
| tree | 405b634502a22af5a1f7f69ff628726d3db60207 /libavcodec | |
| parent | 1104bf2b2068893cbfc5877e0d576b37f6cd3cfe (diff) | |
optimize 1st horizontal lifting step
Originally committed as revision 10231 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/i386/snowdsp_mmx.c | 56 |
1 files changed, 22 insertions, 34 deletions
diff --git a/libavcodec/i386/snowdsp_mmx.c b/libavcodec/i386/snowdsp_mmx.c index e23d264c7a..fc26537f9b 100644 --- a/libavcodec/i386/snowdsp_mmx.c +++ b/libavcodec/i386/snowdsp_mmx.c @@ -42,8 +42,10 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){ i = 0; asm volatile( "pcmpeqd %%xmm7, %%xmm7 \n\t" - "psllw $15, %%xmm7 \n\t" - "psrlw $14, %%xmm7 \n\t" + "pcmpeqd %%xmm3, %%xmm3 \n\t" + "psllw $1, %%xmm3 \n\t" + "paddw %%xmm7, %%xmm3 \n\t" + "psrlw $13, %%xmm3 \n\t" ::); for(; i<w_l-15; i+=16){ asm volatile( @@ -53,22 +55,14 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){ "movdqu 18(%1), %%xmm6 \n\t" "paddw %%xmm1, %%xmm2 \n\t" "paddw %%xmm5, %%xmm6 \n\t" - "movdqa %%xmm2, %%xmm0 \n\t" - "movdqa %%xmm6, %%xmm4 \n\t" - "psraw $1, %%xmm0 \n\t" - "psraw $1, %%xmm4 \n\t" - "paddw %%xmm0, %%xmm2 \n\t" - "paddw %%xmm4, %%xmm6 \n\t" "paddw %%xmm7, %%xmm2 \n\t" "paddw %%xmm7, %%xmm6 \n\t" - "psraw $2, %%xmm2 \n\t" - "psraw $2, %%xmm6 \n\t" - "movdqa (%0), %%xmm0 \n\t" - "movdqa 16(%0), %%xmm4 \n\t" - "psubw %%xmm2, %%xmm0 \n\t" - "psubw %%xmm6, %%xmm4 \n\t" - "movdqa %%xmm0, (%0) \n\t" - "movdqa %%xmm4, 16(%0) \n\t" + "pmulhw %%xmm3, %%xmm2 \n\t" + "pmulhw %%xmm3, %%xmm6 \n\t" + "paddw (%0), %%xmm2 \n\t" + "paddw 16(%0), %%xmm6 \n\t" + "movdqa %%xmm2, (%0) \n\t" + "movdqa %%xmm6, 16(%0) \n\t" :: "r"(&b[i]), "r"(&ref[i]) : "memory" ); @@ -111,7 +105,7 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){ i = 0; asm volatile( - "psllw $13, %%xmm7 \n\t" + "psllw $15, %%xmm7 \n\t" "pcmpeqw %%xmm6, %%xmm6 \n\t" "psrlw $13, %%xmm6 \n\t" "paddw %%xmm7, %%xmm6 \n\t" @@ -234,8 +228,10 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){ b[0] = b[0] - ((W_DM * 2 * ref[1]+W_DO)>>W_DS); asm volatile( "pcmpeqw %%mm7, %%mm7 \n\t" - "psllw $15, %%mm7 \n\t" - "psrlw $14, %%mm7 \n\t" + "pcmpeqw %%mm3, %%mm3 \n\t" + "psllw $1, %%mm3 \n\t" + "paddw %%mm7, %%mm3 \n\t" + "psllw $13, %%mm3 \n\t" ::); for(; i<w_l-7; i+=8){ asm volatile( @@ -243,22 +239,14 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){ "movq 8(%1), %%mm6 \n\t" "paddw 2(%1), %%mm2 \n\t" "paddw 10(%1), %%mm6 \n\t" - "movq %%mm2, %%mm0 \n\t" - "movq %%mm6, %%mm4 \n\t" - "psraw $1, %%mm2 \n\t" - "psraw $1, %%mm6 \n\t" - "paddw %%mm0, %%mm2 \n\t" - "paddw %%mm4, %%mm6 \n\t" "paddw %%mm7, %%mm2 \n\t" "paddw %%mm7, %%mm6 \n\t" - "psraw $2, %%mm2 \n\t" - "psraw $2, %%mm6 \n\t" - "movq (%0), %%mm0 \n\t" - "movq 8(%0), %%mm4 \n\t" - "psubw %%mm2, %%mm0 \n\t" - "psubw %%mm6, %%mm4 \n\t" - "movq %%mm0, (%0) \n\t" - "movq %%mm4, 8(%0) \n\t" + "pmulhw %%mm3, %%mm2 \n\t" + "pmulhw %%mm3, %%mm6 \n\t" + "paddw (%0), %%mm2 \n\t" + "paddw 8(%0), %%mm6 \n\t" + "movq %%mm2, (%0) \n\t" + "movq %%mm6, 8(%0) \n\t" :: "r"(&b[i]), "r"(&ref[i]) : "memory" ); @@ -295,7 +283,7 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){ i = 1; b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS); asm volatile( - "psllw $14, %%mm7 \n\t" + "psllw $15, %%mm7 \n\t" "pcmpeqw %%mm6, %%mm6 \n\t" "psrlw $13, %%mm6 \n\t" "paddw %%mm7, %%mm6 \n\t" |