diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2007-08-20 23:59:20 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2007-08-20 23:59:20 +0000 |
| commit | 1ffbbef2177f4b6e633f6d52d364c20a17e3410f (patch) | |
| tree | 112fdcb87cd1d3f78eaa57631e450c572e85c83e | |
| parent | 4bf1790421554386abb8056feae98eaef93161ce (diff) | |
Simplify and speedup code, reduce needed headroom by 2 bits in the 3rd
vertical lifting step of the SSE2 code (untested)
Originally committed as revision 10163 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/i386/snowdsp_mmx.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/libavcodec/i386/snowdsp_mmx.c b/libavcodec/i386/snowdsp_mmx.c index 7b3214dbb4..229c721822 100644 --- a/libavcodec/i386/snowdsp_mmx.c +++ b/libavcodec/i386/snowdsp_mmx.c @@ -483,18 +483,17 @@ void ff_snow_vertical_compose97i_sse2(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, DWT snow_vertical_compose_sse2_sub("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6") snow_vertical_compose_sse2_store(REG_S,"xmm0","xmm2","xmm4","xmm6") "mov %2, %%"REG_a" \n\t" - snow_vertical_compose_sse2_load(REG_c,"xmm1","xmm3","xmm5","xmm7") snow_vertical_compose_sse2_add(REG_a,"xmm0","xmm2","xmm4","xmm6") - snow_vertical_compose_sse2_sll("2","xmm1","xmm3","xmm5","xmm7")\ - snow_vertical_compose_sse2_r2r_add("xmm1","xmm3","xmm5","xmm7","xmm0","xmm2","xmm4","xmm6") + snow_vertical_compose_sse2_sra("2","xmm0","xmm2","xmm4","xmm6") + snow_vertical_compose_sse2_add(REG_c,"xmm0","xmm2","xmm4","xmm6") "pcmpeqd %%xmm1, %%xmm1 \n\t" "pslld $31, %%xmm1 \n\t" - "psrld $28, %%xmm1 \n\t" + "psrld $30, %%xmm1 \n\t" "mov %1, %%"REG_S" \n\t" snow_vertical_compose_sse2_r2r_add("xmm1","xmm1","xmm1","xmm1","xmm0","xmm2","xmm4","xmm6") - snow_vertical_compose_sse2_sra("4","xmm0","xmm2","xmm4","xmm6") + snow_vertical_compose_sse2_sra("2","xmm0","xmm2","xmm4","xmm6") snow_vertical_compose_sse2_add(REG_c,"xmm0","xmm2","xmm4","xmm6") snow_vertical_compose_sse2_store(REG_c,"xmm0","xmm2","xmm4","xmm6") snow_vertical_compose_sse2_add(REG_S,"xmm0","xmm2","xmm4","xmm6") |