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avcodec/x86/vorbisdsp: Remove obsolete 3dnow functions

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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>
This commit is contained in:
Andreas Rheinhardt 2022-06-11 03:31:25 +02:00
parent ec73557981
commit f76477d4d7
2 changed files with 0 additions and 35 deletions

29
libavcodec/x86/vorbisdsp.asm

@ -27,35 +27,6 @@ pdw_80000000: times 4 dd 0x80000000
SECTION .text
%if ARCH_X86_32
INIT_MMX 3dnow
cglobal vorbis_inverse_coupling, 3, 3, 6, mag, ang, block_size
pxor m7, m7
lea magq, [magq+block_sizeq*4]
lea angq, [angq+block_sizeq*4]
neg block_sizeq
.loop:
mova m0, [magq+block_sizeq*4]
mova m1, [angq+block_sizeq*4]
mova m2, m0
mova m3, m1
pfcmpge m2, m7 ; m <= 0.0
pfcmpge m3, m7 ; a <= 0.0
pslld m2, 31 ; keep only the sign bit
pxor m1, m2
mova m4, m3
pand m3, m1
pandn m4, m1
pfadd m3, m0 ; a = m + ((a < 0) & (a ^ sign(m)))
pfsub m0, m4 ; m = m + ((a > 0) & (a ^ sign(m)))
mova [angq+block_sizeq*4], m3
mova [magq+block_sizeq*4], m0
add block_sizeq, 2
jl .loop
femms
RET
%endif
INIT_XMM sse
cglobal vorbis_inverse_coupling, 3, 3, 6, mag, ang, block_size
mova m5, [pdw_80000000]

6
libavcodec/x86/vorbisdsp_init.c

@ -24,8 +24,6 @@
#include "libavutil/x86/cpu.h"
#include "libavcodec/vorbisdsp.h"
void ff_vorbis_inverse_coupling_3dnow(float *mag, float *ang,
intptr_t blocksize);
void ff_vorbis_inverse_coupling_sse(float *mag, float *ang,
intptr_t blocksize);
@ -33,10 +31,6 @@ av_cold void ff_vorbisdsp_init_x86(VorbisDSPContext *dsp)
{
int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_AMD3DNOW(cpu_flags))
dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_3dnow;
#endif /* ARCH_X86_32 */
if (EXTERNAL_SSE(cpu_flags))
dsp->vorbis_inverse_coupling = ff_vorbis_inverse_coupling_sse;
}