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avcodec/x86/vp8dsp: Don't use MMX registers in ff_put_vp8_epel4_v4_ssse3

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Switching to xmm registers allows to process two rows in parallel,
leading to speedups. It is also ABI compliant (no more missing emms).

Old benchmarks:
vp8_put_epel4_v4_c:                                     96.8 ( 1.00x)
vp8_put_epel4_v4_ssse3:                                 28.2 ( 3.43x)

New benchmarks:
vp8_put_epel4_v4_c:                                     95.1 ( 1.00x)
vp8_put_epel4_v4_ssse3:                                 22.8 ( 4.17x)

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-11-24 09:16:26 +01:00
parent f017806829
commit 714cbf1c70
1 changed files with 31 additions and 5 deletions
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36
libavcodec/x86/vp8dsp.asm
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@@ -238,6 +238,7 @@ cglobal put_vp8_epel%1_h4, 6, 6 + npicregs, 7, dst, dststride, src, srcstride, h
jg .nextrow
RET
INIT_XMM ssse3
cglobal put_vp8_epel%1_v4, 7, 7, 8, dst, dststride, src, srcstride, height, picreg, my
shl myd, 4
%if PIC
@@ -250,13 +251,38 @@ cglobal put_vp8_epel%1_v4, 7, 7, 8, dst, dststride, src, srcstride, height, picr
; read 3 lines
mov picregq, srcstrideq
neg picregq
movh m0, [srcq+picregq]
movh m1, [srcq]
movh m2, [srcq+srcstrideq]
MOV m0, [srcq+picregq]
MOV m1, [srcq]
MOV m2, [srcq+srcstrideq]
lea srcq, [srcq+2*srcstrideq]
punpcklbw m0, m2
%if %1 == 4
.next2rows:
movd m3, [srcq]
movd m4, [srcq+srcstrideq]
punpcklbw m1, m3
punpcklqdq m0, m1
punpcklbw m2, m4
pmaddubsw m0, m5
punpcklqdq m1, m2
pmaddubsw m1, m6
lea srcq, [srcq+2*srcstrideq]
paddsw m1, m0
pmulhrsw m1, m7
mova m0, m2
packuswb m1, m1
movd [dstq], m1
mova m2, m4
psrldq m1, 4
movd [dstq+dststrideq], m1
mova m1, m3
lea dstq, [dstq+2*dststrideq]
sub heightd, 2
jg .next2rows
%else
.nextrow:
movh m3, [srcq+2*srcstrideq] ; read new row
movh m3, [srcq] ; read new row
pmaddubsw m0, m5
punpcklbw m1, m3
pmaddubsw m4, m1, m6
@@ -273,9 +299,9 @@ cglobal put_vp8_epel%1_v4, 7, 7, 8, dst, dststride, src, srcstride, height, picr
add dstq, dststrideq
dec heightd ; next row
jg .nextrow
%endif
RET
INIT_XMM ssse3
cglobal put_vp8_epel%1_v6, 7, 7, 8, dst, dststride, src, srcstride, height, picreg, my
lea myd, [myq*3]
%if PIC