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* commit '07e1f99a1bb41d1a615676140eefc85cf69fa793':
  x86util: Document SBUTTERFLY macro

Merged-by: Clément Bœsch <u@pkh.me>
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Clément Bœsch 2017-03-20 18:38:07 +01:00
commit 3898e346b3
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libavutil/x86/x86util.asm
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@ -34,6 +34,16 @@
[base], [base + stride], [base + 2*stride], [base3], \ [base], [base + stride], [base + 2*stride], [base3], \
[base3 + stride], [base3 + 2*stride], [base3 + stride3], [base3 + stride*4] [base3 + stride], [base3 + 2*stride], [base3 + stride3], [base3 + stride*4]
; 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 %macro SBUTTERFLY 4
%ifidn %1, dqqq %ifidn %1, dqqq
vperm2i128 m%4, m%2, m%3, q0301 vperm2i128 m%4, m%2, m%3, q0301