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Code Issues Releases Activity

avcodec/x86/blockdsp: Remove obsolete MMX functions

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x64 always has MMX, MMXEXT, SSE and SSE2 and this means
that some functions for MMX, MMXEXT and 3dnow are always
overridden by other functions (unless one e.g. explicitly
disables SSE2) for x64. So given that the only systems that
benefit from these functions are truely ancient 32bit x86s
they are removed.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-06-10 20:49:50 +02:00
parent bfb28b5ce8
commit ee551a21dd
2 changed files with 0 additions and 13 deletions
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6
libavcodec/x86/blockdsp.asm
View File

@ -46,9 +46,6 @@ cglobal clear_block, 1, 1, %1, blocks
RET
%endmacro
INIT_MMX mmx
%define ZERO pxor
CLEAR_BLOCK 0, 4
INIT_XMM sse
%define ZERO xorps
CLEAR_BLOCK 1, 2
@ -78,9 +75,6 @@ cglobal clear_blocks, 1, 2, %1, blocks, len
RET
%endmacro
INIT_MMX mmx
%define ZERO pxor
CLEAR_BLOCKS 0
INIT_XMM sse
%define ZERO xorps
CLEAR_BLOCKS 1

7
libavcodec/x86/blockdsp_init.c
View File

@ -24,10 +24,8 @@
#include "libavutil/x86/cpu.h"
#include "libavcodec/blockdsp.h"
void ff_clear_block_mmx(int16_t *block);
void ff_clear_block_sse(int16_t *block);
void ff_clear_block_avx(int16_t *block);
void ff_clear_blocks_mmx(int16_t *blocks);
void ff_clear_blocks_sse(int16_t *blocks);
void ff_clear_blocks_avx(int16_t *blocks);
@ -37,11 +35,6 @@ av_cold void ff_blockdsp_init_x86(BlockDSPContext *c,
#if HAVE_X86ASM
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_MMX(cpu_flags)) {
c->clear_block = ff_clear_block_mmx;
c->clear_blocks = ff_clear_blocks_mmx;
}
if (EXTERNAL_SSE(cpu_flags)) {
c->clear_block = ff_clear_block_sse;
c->clear_blocks = ff_clear_blocks_sse;