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| author | Alexandra Hájková <alexandra.khirnova@gmail.com> | 2016-09-10 20:41:43 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2016-09-19 10:02:43 +0200 |
| commit | 07e1f99a1bb41d1a615676140eefc85cf69fa793 (patch) | |
| tree | 2b9124dba04f2cfe4cb27c1ac1b623bf3bf93d72 | |
| parent | de64dd13cbd47fd54334b6aa2a2cd3c7c36daae2 (diff) | |
| download | ffmpeg-07e1f99a1bb41d1a615676140eefc85cf69fa793.tar.gz | |
x86util: Document SBUTTERFLY macro
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
| -rw-r--r-- | libavutil/x86/x86util.asm | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavutil/x86/x86util.asm b/libavutil/x86/x86util.asm index 16a9baef7a..bba958ebfc 100644 --- a/libavutil/x86/x86util.asm +++ b/libavutil/x86/x86util.asm @@ -29,6 +29,16 @@ %include "libavutil/x86/x86inc.asm" +; Interleave low src0 with low src1 and store in src0, +; interleave high src0 with high src1 and store in src1. +; %1 - types +; %2 - index of the register with src0 +; %3 - index of the register with src1 +; %4 - index of the register for intermediate results +; example for %1 - wd: input: src0: x0 x1 x2 x3 z0 z1 z2 z3 +; src1: y0 y1 y2 y3 q0 q1 q2 q3 +; output: src0: x0 y0 x1 y1 x2 y2 x3 y3 +; src1: z0 q0 z1 q1 z2 q2 z3 q3 %macro SBUTTERFLY 4 %if avx_enabled == 0 mova m%4, m%2 |