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avcodec/x86/fmtconvert: Remove obsolete SSE 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 21:00:55 +02:00
parent 9426a2f8ff
commit 4038b5b209
2 changed files with 0 additions and 43 deletions
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36
libavcodec/x86/fmtconvert.asm
View File

@ -44,35 +44,17 @@ cglobal int32_to_float_fmul_scalar, 4, 4, %1, dst, src, mul, len
add dstq, lenq
neg lenq
.loop:
%if cpuflag(sse2)
cvtdq2ps m1, [srcq+lenq ]
cvtdq2ps m2, [srcq+lenq+16]
%else
cvtpi2ps m1, [srcq+lenq ]
cvtpi2ps m3, [srcq+lenq+ 8]
cvtpi2ps m2, [srcq+lenq+16]
cvtpi2ps m4, [srcq+lenq+24]
movlhps m1, m3
movlhps m2, m4
%endif
mulps m1, m0
mulps m2, m0
mova [dstq+lenq ], m1
mova [dstq+lenq+16], m2
add lenq, 32
jl .loop
%if notcpuflag(sse2)
;; cvtpi2ps switches to MMX even if the source is a memory location
;; possible an error in documentation since every tested CPU disagrees with
;; that. Use emms anyway since the vast majority of machines will use the
;; SSE2 variant
emms
%endif
RET
%endmacro
INIT_XMM sse
INT32_TO_FLOAT_FMUL_SCALAR 5
INIT_XMM sse2
INT32_TO_FLOAT_FMUL_SCALAR 3
@ -89,17 +71,8 @@ cglobal int32_to_float_fmul_array8, 5, 5, 5, c, dst, src, mul, len
.loop:
movss m0, [mulq]
SPLATD m0
%if cpuflag(sse2)
cvtdq2ps m1, [srcq+lenq ]
cvtdq2ps m2, [srcq+lenq+16]
%else
cvtpi2ps m1, [srcq+lenq ]
cvtpi2ps m3, [srcq+lenq+ 8]
cvtpi2ps m2, [srcq+lenq+16]
cvtpi2ps m4, [srcq+lenq+24]
movlhps m1, m3
movlhps m2, m4
%endif
mulps m1, m0
mulps m2, m0
mova [dstq+lenq ], m1
@ -107,18 +80,9 @@ cglobal int32_to_float_fmul_array8, 5, 5, 5, c, dst, src, mul, len
add mulq, 4
add lenq, 32
jl .loop
%if notcpuflag(sse2)
;; cvtpi2ps switches to MMX even if the source is a memory location
;; possible an error in documentation since every tested CPU disagrees with
;; that. Use emms anyway since the vast majority of machines will use the
;; SSE2 variant
emms
%endif
RET
%endmacro
INIT_XMM sse
INT32_TO_FLOAT_FMUL_ARRAY8
INIT_XMM sse2
INT32_TO_FLOAT_FMUL_ARRAY8

7
libavcodec/x86/fmtconvert_init.c
View File

@ -29,10 +29,7 @@
#if HAVE_X86ASM
void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
void ff_int32_to_float_fmul_array8_sse (FmtConvertContext *c, float *dst, const int32_t *src,
const float *mul, int len);
void ff_int32_to_float_fmul_array8_sse2(FmtConvertContext *c, float *dst, const int32_t *src,
const float *mul, int len);
@ -43,10 +40,6 @@ av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx
#if HAVE_X86ASM
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_SSE(cpu_flags)) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
}
if (EXTERNAL_SSE2(cpu_flags)) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;