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ffmpeg.wasm-core
Commit c9076276 authored by Michael Niedermayer's avatar Michael Niedermayer
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optimize 1st horizontal lifting step 

Originally committed as revision 10231 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 1104bf2b
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Showing with 22 additions and 34 deletions
libavcodec/i386/snowdsp_mmx.c
View file @ c9076276
......@@ -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"
......
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