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avcodec/x86/lossless_videoencdsp: Remove obsolete MMX function

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The only systems which benefit from ff_diff_bytes_mmx are truely
ancient 32bit x86s as all other systems use at least the SSE2 versions
(this includes all x64 cpus (which is why this code is restricted
to x86-32)).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2022-06-20 07:20:40 +02:00
parent 839fbe0e98
commit 230ea38de1
2 changed files with 0 additions and 15 deletions
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9
libavcodec/x86/lossless_videoencdsp.asm
View File

@@ -113,15 +113,6 @@ cglobal diff_bytes, 4,5,2, dst, src1, src2, w
REP_RET
%endmacro
%if ARCH_X86_32
INIT_MMX mmx
DIFF_BYTES_PROLOGUE
%define regsize mmsize
DIFF_BYTES_LOOP_PREP .skip_main_aa, .end_aa
DIFF_BYTES_BODY a, a
%undef i
%endif
INIT_XMM sse2
DIFF_BYTES_PROLOGUE
%define regsize mmsize

6
libavcodec/x86/lossless_videoencdsp_init.c
View File

@@ -29,8 +29,6 @@
#include "libavcodec/lossless_videoencdsp.h"
#include "libavcodec/mathops.h"
void ff_diff_bytes_mmx(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
intptr_t w);
void ff_diff_bytes_sse2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
intptr_t w);
void ff_diff_bytes_avx2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
@@ -87,10 +85,6 @@ av_cold void ff_llvidencdsp_init_x86(LLVidEncDSPContext *c)
{
av_unused int cpu_flags = av_get_cpu_flags();
if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
c->diff_bytes = ff_diff_bytes_mmx;
}
#if HAVE_INLINE_ASM
if (INLINE_MMXEXT(cpu_flags)) {
c->sub_median_pred = sub_median_pred_mmxext;