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f76477d4d7
x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT, SSE and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2). So given that the only systems which benefit from the 3dnow implementations are truely ancient 32bit AMD x86s they are removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
58 lines
2.1 KiB
NASM
58 lines
2.1 KiB
NASM
;******************************************************************************
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;* Vorbis x86 optimizations
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;* Copyright (C) 2006 Loren Merritt <lorenm@u.washington.edu>
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg is free software; you can redistribute it and/or
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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;* FFmpeg is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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;* License along with FFmpeg; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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pdw_80000000: times 4 dd 0x80000000
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SECTION .text
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INIT_XMM sse
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cglobal vorbis_inverse_coupling, 3, 3, 6, mag, ang, block_size
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mova m5, [pdw_80000000]
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shl block_sized, 2
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add magq, block_sizeq
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add angq, block_sizeq
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neg block_sizeq
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align 16
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.loop:
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mova m0, [magq+block_sizeq]
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mova m1, [angq+block_sizeq]
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xorps m2, m2
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xorps m3, m3
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cmpleps m2, m0 ; m <= 0.0
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cmpleps m3, m1 ; a <= 0.0
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andps m2, m5 ; keep only the sign bit
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xorps m1, m2
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mova m4, m3
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andps m3, m1
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andnps m4, m1
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addps m3, m0 ; a = m + ((a < 0) & (a ^ sign(m)))
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subps m0, m4 ; m = m + ((a > 0) & (a ^ sign(m)))
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mova [angq+block_sizeq], m3
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mova [magq+block_sizeq], m0
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add block_sizeq, mmsize
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jl .loop
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RET
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