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x86/synth_filter: add synth_filter_avx 

Sandy Bridge Win64:
180 cycles in ff_synth_filter_inner_sse2
150 cycles in ff_synth_filter_inner_avx

Also switch some instructions to a three operand format to avoid
assembly errors with Yasm 1.1.0 or older.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
tags/n2.3
James Almer Anton Khirnov 11 years ago
parent
2025d8026f
commit
81e02fae6e
2 changed files with 57 additions and 32 deletions
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  1. +53
    -32
      libavcodec/x86/dcadsp.asm
  2. +4
    -0
      libavcodec/x86/dcadsp_init.c

+ 53
- 32
libavcodec/x86/dcadsp.asm View File

@@ -200,18 +200,22 @@ DCA_LFE_FIR 0
DCA_LFE_FIR 1

%macro SETZERO 1
%if cpuflag(sse2)
%if cpuflag(sse2) && notcpuflag(avx)
pxor %1, %1
%else
xorps %1, %1, %1
%endif
%endmacro

%macro SHUF 2
%if cpuflag(sse2)
pshufd %1, %2, q0123
%macro SHUF 3
%if cpuflag(avx)
mova %3, [%2 - 16]
vperm2f128 %1, %3, %3, 1
vshufps %1, %1, %1, q0123
%elif cpuflag(sse2)
pshufd %1, [%2], q0123
%else
mova %1, %2
mova %1, [%2]
shufps %1, %1, q0123
%endif
%endmacro
@@ -220,43 +224,43 @@ DCA_LFE_FIR 1
; reading backwards: ptr1 = synth_buf + j + i; ptr2 = synth_buf + j - i
;~ a += window[i + j] * (-synth_buf[15 - i + j])
;~ b += window[i + j + 16] * (synth_buf[i + j])
SHUF m5, [ptr2 + j + (15 - 3) * 4]
SHUF m5, ptr2 + j + (15 - 3) * 4, m6
mova m6, [ptr1 + j]
%if ARCH_X86_64
SHUF m11, [ptr2 + j + (15 - 3) * 4 - mmsize]
SHUF m11, ptr2 + j + (15 - 3) * 4 - mmsize, m12
mova m12, [ptr1 + j + mmsize]
%endif
mulps m6, [win + %1 + j + 16 * 4]
mulps m5, [win + %1 + j]
mulps m6, m6, [win + %1 + j + 16 * 4]
mulps m5, m5, [win + %1 + j]
%if ARCH_X86_64
mulps m12, [win + %1 + j + mmsize + 16 * 4]
mulps m11, [win + %1 + j + mmsize]
mulps m12, m12, [win + %1 + j + mmsize + 16 * 4]
mulps m11, m11, [win + %1 + j + mmsize]
%endif
addps m2, m6
subps m1, m5
addps m2, m2, m6
subps m1, m1, m5
%if ARCH_X86_64
addps m8, m12
subps m7, m11
addps m8, m8, m12
subps m7, m7, m11
%endif
;~ c += window[i + j + 32] * (synth_buf[16 + i + j])
;~ d += window[i + j + 48] * (synth_buf[31 - i + j])
SHUF m6, [ptr2 + j + (31 - 3) * 4]
SHUF m6, ptr2 + j + (31 - 3) * 4, m5
mova m5, [ptr1 + j + 16 * 4]
%if ARCH_X86_64
SHUF m12, [ptr2 + j + (31 - 3) * 4 - mmsize]
SHUF m12, ptr2 + j + (31 - 3) * 4 - mmsize, m11
mova m11, [ptr1 + j + mmsize + 16 * 4]
%endif
mulps m5, [win + %1 + j + 32 * 4]
mulps m6, [win + %1 + j + 48 * 4]
mulps m5, m5, [win + %1 + j + 32 * 4]
mulps m6, m6, [win + %1 + j + 48 * 4]
%if ARCH_X86_64
mulps m11, [win + %1 + j + mmsize + 32 * 4]
mulps m12, [win + %1 + j + mmsize + 48 * 4]
mulps m11, m11, [win + %1 + j + mmsize + 32 * 4]
mulps m12, m12, [win + %1 + j + mmsize + 48 * 4]
%endif
addps m3, m5
addps m4, m6
addps m3, m3, m5
addps m4, m4, m6
%if ARCH_X86_64
addps m9, m11
addps m10, m12
addps m9, m9, m11
addps m10, m10, m12
%endif
sub j, 64 * 4
%endmacro
@@ -269,25 +273,34 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
synth_buf, synth_buf2, window, out, off, scale
%define scale m0
%if ARCH_X86_32 || WIN64
%if cpuflag(sse2)
%if cpuflag(sse2) && notcpuflag(avx)
movd scale, scalem
SPLATD m0
%else
movss scale, scalem
VBROADCASTSS m0, scalem
%endif
; Make sure offset is in a register and not on the stack
%define OFFQ r4q
%else
SPLATD xmm0
%if cpuflag(avx)
vinsertf128 m0, m0, xmm0, 1
%endif
%define OFFQ offq
%endif
SPLATD m0
; prepare inner counter limit 1
mov r5q, 480
sub r5q, offmp
and r5q, -64
shl r5q, 2
%if ARCH_X86_32 || notcpuflag(avx)
mov OFFQ, r5q
%define i r5q
mov i, 16 * 4 - (ARCH_X86_64 + 1) * mmsize ; main loop counter
%else
%define i 0
%define OFFQ r5q
%endif

%define buf2 synth_buf2q
%if ARCH_X86_32
@@ -306,8 +319,10 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
%define j r3q
mov win, windowm
mov ptr1, synth_bufm
%if ARCH_X86_32 || notcpuflag(avx)
add win, i
add ptr1, i
%endif
%else ; ARCH_X86_64
%define ptr1 r6q
%define ptr2 r7q ; must be loaded
@@ -323,7 +338,9 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
mov ptr2, synth_bufmp
; prepare the inner loop counter
mov j, OFFQ
%if ARCH_X86_32 || notcpuflag(avx)
sub ptr2, i
%endif
.loop1:
INNER_LOOP 0
jge .loop1
@@ -346,11 +363,11 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
%endif
;~ out[i] = a * scale;
;~ out[i + 16] = b * scale;
mulps m1, scale
mulps m2, scale
mulps m1, m1, scale
mulps m2, m2, scale
%if ARCH_X86_64
mulps m7, scale
mulps m8, scale
mulps m7, m7, scale
mulps m8, m8, scale
%endif
;~ synth_buf2[i] = c;
;~ synth_buf2[i + 16] = d;
@@ -368,8 +385,10 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
mova [outq + i + 0 * 4 + mmsize], m7
mova [outq + i + 16 * 4 + mmsize], m8
%endif
%if ARCH_X86_32 || notcpuflag(avx)
sub i, (ARCH_X86_64 + 1) * mmsize
jge .mainloop
%endif
RET
%endmacro

@@ -379,3 +398,5 @@ SYNTH_FILTER
%endif
INIT_XMM sse2
SYNTH_FILTER
INIT_YMM avx
SYNTH_FILTER

+ 4
- 0
libavcodec/x86/dcadsp_init.c View File

@@ -81,6 +81,7 @@ static void synth_filter_##opt(FFTContext *imdct, \
SYNTH_FILTER_FUNC(sse)
#endif
SYNTH_FILTER_FUNC(sse2)
SYNTH_FILTER_FUNC(avx)
#endif /* HAVE_YASM */

av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
@@ -96,5 +97,8 @@ av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
if (EXTERNAL_SSE2(cpu_flags)) {
s->synth_filter_float = synth_filter_sse2;
}
if (EXTERNAL_AVX(cpu_flags)) {
s->synth_filter_float = synth_filter_avx;
}
#endif /* HAVE_YASM */
}

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