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avcodec/x86/sbcdsp: Avoid shift

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2026-07-11 09:43:26 +02:00
parent f769e433a3
commit 8bea614d98
1 changed files with 4 additions and 7 deletions
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11
libavcodec/x86/sbcdsp.asm
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@@ -39,13 +39,10 @@ SECTION .text
mov%6 %4, [inq+%5+mmsize]
%if %5 == 0
pcmpeqd m0, m0
psrld m0, 31
pslld m0, 15 ; -1 << (SBC_PROTO_FIXED_SCALE - 1) as dword
%endif
pmaddwd %3, [constsq+%5]
pmaddwd %4, [constsq+%5+mmsize]
%if %5 == 0
pslld m0, 15 ; 1 << (SBC_PROTO_FIXED_SCALE - 1) as dword
%endif
NIDN paddd, %1, %3
NIDN paddd, %2, %4
%endmacro
@@ -58,7 +55,7 @@ cglobal sbc_analyze_4, 3, 3, 5, in, out, consts
ANALYZE_MAC m1, m2, m1, m2, 0, u
ANALYZE_MAC m1, m2, m3, m4, 32, u
movu m3, [inq+64]
paddd m1, m0
psubd m1, m0
pmaddwd m3, [constsq+64]
paddd m1, m2
paddd m1, m3
@@ -83,10 +80,10 @@ INIT_XMM sse2
cglobal sbc_analyze_8, 3, 3, 6, in, out, consts
ANALYZE_MAC m1, m2, m1, m2, 0, a
ANALYZE_MAC m1, m2, m3, m4, 32, a
paddd m1, m0
psubd m1, m0
ANALYZE_MAC m1, m2, m3, m4, 64, a
ANALYZE_MAC m1, m2, m3, m4, 96, a
paddd m2, m0
psubd m2, m0
ANALYZE_MAC m1, m2, m3, m4, 128, a
psrad m1, 16