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commit 5ccfaa872ae46115510fa258c83c14fe528cd222 Author: Andreas Rheinhardt <[email protected]> AuthorDate: Tue Aug 4 18:12:12 2026 +0200 Commit: James Almer <[email protected]> CommitDate: Thu Aug 6 19:59:16 2026 +0000 avfilter/x86/vf_atadenoise: Avoid shifting unnecessarily For a word mask register (where all the values are either 0x0 or 0xFFFF) a right logical shift by 15 is equivalent to negating, so instead of negating the mask and then adding it to another register one can simply subtract the mask from the other register. Signed-off-by: Andreas Rheinhardt <[email protected]> --- libavfilter/x86/vf_atadenoise.asm | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/libavfilter/x86/vf_atadenoise.asm b/libavfilter/x86/vf_atadenoise.asm index 9726084f31..c1217d38ce 100644 --- a/libavfilter/x86/vf_atadenoise.asm +++ b/libavfilter/x86/vf_atadenoise.asm @@ -85,8 +85,7 @@ cglobal atadenoise_filter_row8, 6,10,13, src, dst, srcf, w, mid, size, i, j, src mova m12, m6 pand m9, m6 paddw m7, m9 - psrlw m6, 15 - paddw m8, m6 + psubw m8, m6 mov srcfxq, [srcfq + iq * 8] add srcfxq, wq @@ -105,8 +104,7 @@ cglobal atadenoise_filter_row8, 6,10,13, src, dst, srcf, w, mid, size, i, j, src mova m12, m6 pand m9, m6 paddw m7, m9 - psrlw m6, 15 - paddw m8, m6 + psubw m8, m6 ptest m12, m12 jz .finish @@ -190,8 +188,7 @@ cglobal atadenoise_filter_row8_serial, 6,10,12, src, dst, srcf, w, mid, size, i, mova m11, m6 pand m9, m6 paddw m7, m9 - psrlw m6, 15 - paddw m8, m6 + psubw m8, m6 ptest m11, m11 jz .end_loop0 @@ -223,8 +220,7 @@ cglobal atadenoise_filter_row8_serial, 6,10,12, src, dst, srcf, w, mid, size, i, mova m11, m6 pand m9, m6 paddw m7, m9 - psrlw m6, 15 - paddw m8, m6 + psubw m8, m6 ptest m11, m11 jz .finish _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
