From: Lynne <dev@lynne.ee>
To: Ffmpeg Devel <ffmpeg-devel@ffmpeg.org>
Subject: [FFmpeg-devel] [PATCH 1/2] x86/tx_float: add support for calling assembly functions from assembly
Date: Sat, 3 Sep 2022 03:41:38 +0200 (CEST)
Message-ID: <NB0-fO---3-2@lynne.ee> (raw)
[-- Attachment #1: Type: text/plain, Size: 161 bytes --]
Needed for the next patch.
We get this for the extremely small cost of a branch on _ns functions,
which wouldn't be used anyway with assembly.
Patch attached.
[-- Attachment #2: 0001-x86-tx_float-add-support-for-calling-assembly-functi.patch --]
[-- Type: text/x-diff, Size: 13592 bytes --]
From a62ecf3fb5bcb192566bb89d5fad2762baa6f95d Mon Sep 17 00:00:00 2001
From: Lynne <dev@lynne.ee>
Date: Sat, 3 Sep 2022 03:34:57 +0200
Subject: [PATCH 1/2] x86/tx_float: add support for calling assembly functions
from assembly
Needed for the next patch.
We get this for the extremely small cost of a branch on _ns functions,
which wouldn't be used anyway with assembly.
---
libavutil/tx.c | 2 +
libavutil/tx_priv.h | 1 +
libavutil/x86/tx_float.asm | 160 ++++++++++++++++++++++++----------
libavutil/x86/tx_float_init.c | 25 ++++++
4 files changed, 141 insertions(+), 47 deletions(-)
diff --git a/libavutil/tx.c b/libavutil/tx.c
index 28e49a5d41..14bfef040f 100644
--- a/libavutil/tx.c
+++ b/libavutil/tx.c
@@ -313,6 +313,8 @@ static void print_flags(AVBPrint *bp, uint64_t f)
av_bprintf(bp, "%spreshuf", prev > 1 ? sep : "");
if ((f & AV_TX_FULL_IMDCT) && ++prev)
av_bprintf(bp, "%simdct_full", prev > 1 ? sep : "");
+ if ((f & FF_TX_ASM_CALL) && ++prev)
+ av_bprintf(bp, "%sasm_call", prev > 1 ? sep : "");
av_bprintf(bp, "]");
}
diff --git a/libavutil/tx_priv.h b/libavutil/tx_priv.h
index e38490bd56..691942f808 100644
--- a/libavutil/tx_priv.h
+++ b/libavutil/tx_priv.h
@@ -145,6 +145,7 @@ typedef void TXComplex;
#define FF_TX_PRESHUFFLE (1ULL << 61) /* Codelet expects permuted coeffs */
#define FF_TX_INVERSE_ONLY (1ULL << 60) /* For non-orthogonal inverse-only transforms */
#define FF_TX_FORWARD_ONLY (1ULL << 59) /* For non-orthogonal forward-only transforms */
+#define FF_TX_ASM_CALL (1ULL << 58) /* For asm->asm functions only */
typedef enum FFTXCodeletPriority {
FF_TX_PRIO_BASE = 0, /* Baseline priority */
diff --git a/libavutil/x86/tx_float.asm b/libavutil/x86/tx_float.asm
index 191af7d68f..791ad7b322 100644
--- a/libavutil/x86/tx_float.asm
+++ b/libavutil/x86/tx_float.asm
@@ -707,20 +707,21 @@ cglobal fft4_ %+ %1 %+ _float, 4, 4, 3, ctx, out, in, stride
FFT4 fwd, 0
FFT4 inv, 1
-%macro FFT8_SSE_FN 2
+%macro FFT8_SSE_FN 1
INIT_XMM sse3
-cglobal fft8_ %+ %1, 4, 4, 6, ctx, out, in, tmp
-%if %2
+%if %1
+cglobal fft8_asm_float, 0, 0, 0, ctx, out, in, tmp
+ movaps m0, [inq + 0*mmsize]
+ movaps m1, [inq + 1*mmsize]
+ movaps m2, [inq + 2*mmsize]
+ movaps m3, [inq + 3*mmsize]
+%else
+cglobal fft8_float, 4, 4, 6, ctx, out, in, tmp
mov ctxq, [ctxq + AVTXContext.map]
LOAD64_LUT m0, inq, ctxq, (mmsize/2)*0, tmpq
LOAD64_LUT m1, inq, ctxq, (mmsize/2)*1, tmpq
LOAD64_LUT m2, inq, ctxq, (mmsize/2)*2, tmpq
LOAD64_LUT m3, inq, ctxq, (mmsize/2)*3, tmpq
-%else
- movaps m0, [inq + 0*mmsize]
- movaps m1, [inq + 1*mmsize]
- movaps m2, [inq + 2*mmsize]
- movaps m3, [inq + 3*mmsize]
%endif
FFT8 m0, m1, m2, m3, m4, m5
@@ -735,22 +736,33 @@ cglobal fft8_ %+ %1, 4, 4, 6, ctx, out, in, tmp
movups [outq + 2*mmsize], m5
movups [outq + 3*mmsize], m1
+%if %1
+ ret
+%else
+ RET
+%endif
+
+%if %1
+cglobal fft8_ns_float, 4, 4, 6, ctx, out, in, tmp
+ call ff_tx_fft8_asm_float_sse3
RET
+%endif
%endmacro
-FFT8_SSE_FN float, 1
-FFT8_SSE_FN ns_float, 0
+FFT8_SSE_FN 0
+FFT8_SSE_FN 1
-%macro FFT8_AVX_FN 2
+%macro FFT8_AVX_FN 1
INIT_YMM avx
-cglobal fft8_ %+ %1, 4, 4, 4, ctx, out, in, tmp
-%if %2
+%if %1
+cglobal fft8_asm_float, 0, 0, 0, ctx, out, in, tmp
+ movaps m0, [inq + 0*mmsize]
+ movaps m1, [inq + 1*mmsize]
+%else
+cglobal fft8_float, 4, 4, 4, ctx, out, in, tmp
mov ctxq, [ctxq + AVTXContext.map]
LOAD64_LUT m0, inq, ctxq, (mmsize/2)*0, tmpq, m2
LOAD64_LUT m1, inq, ctxq, (mmsize/2)*1, tmpq, m3
-%else
- movaps m0, [inq + 0*mmsize]
- movaps m1, [inq + 1*mmsize]
%endif
FFT8_AVX m0, m1, m2, m3
@@ -764,21 +776,32 @@ cglobal fft8_ %+ %1, 4, 4, 4, ctx, out, in, tmp
vextractf128 [outq + 16*2], m2, 1
vextractf128 [outq + 16*3], m0, 1
+%if %1
+ ret
+%else
+ RET
+%endif
+
+%if %1
+cglobal fft8_ns_float, 4, 4, 4, ctx, out, in, tmp
+ call ff_tx_fft8_asm_float_avx
RET
+%endif
%endmacro
-FFT8_AVX_FN float, 1
-FFT8_AVX_FN ns_float, 0
+FFT8_AVX_FN 0
+FFT8_AVX_FN 1
-%macro FFT16_FN 3
+%macro FFT16_FN 2
INIT_YMM %1
-cglobal fft16_ %+ %2, 4, 4, 8, ctx, out, in, tmp
-%if %3
+%if %2
+cglobal fft16_asm_float, 0, 0, 0, ctx, out, in, tmp
movaps m0, [inq + 0*mmsize]
movaps m1, [inq + 1*mmsize]
movaps m2, [inq + 2*mmsize]
movaps m3, [inq + 3*mmsize]
%else
+cglobal fft16_float, 4, 4, 8, ctx, out, in, tmp
mov ctxq, [ctxq + AVTXContext.map]
LOAD64_LUT m0, inq, ctxq, (mmsize/2)*0, tmpq, m4
LOAD64_LUT m1, inq, ctxq, (mmsize/2)*1, tmpq, m5
@@ -802,23 +825,34 @@ cglobal fft16_ %+ %2, 4, 4, 8, ctx, out, in, tmp
vextractf128 [outq + 16*6], m5, 1
vextractf128 [outq + 16*7], m1, 1
+%if %2
+ ret
+%else
+ RET
+%endif
+
+%if %2
+cglobal fft16_ns_float, 4, 4, 8, ctx, out, in, tmp
+ call ff_tx_fft16_asm_float_ %+ %1
RET
+%endif
%endmacro
-FFT16_FN avx, float, 0
-FFT16_FN avx, ns_float, 1
-FFT16_FN fma3, float, 0
-FFT16_FN fma3, ns_float, 1
+FFT16_FN avx, 0
+FFT16_FN avx, 1
+FFT16_FN fma3, 0
+FFT16_FN fma3, 1
-%macro FFT32_FN 3
+%macro FFT32_FN 2
INIT_YMM %1
-cglobal fft32_ %+ %2, 4, 4, 16, ctx, out, in, tmp
-%if %3
+%if %2
+cglobal fft32_asm_float, 0, 0, 0, ctx, out, in, tmp
movaps m4, [inq + 4*mmsize]
movaps m5, [inq + 5*mmsize]
movaps m6, [inq + 6*mmsize]
movaps m7, [inq + 7*mmsize]
%else
+cglobal fft32_float, 4, 4, 16, ctx, out, in, tmp
mov ctxq, [ctxq + AVTXContext.map]
LOAD64_LUT m4, inq, ctxq, (mmsize/2)*4, tmpq, m8, m12
LOAD64_LUT m5, inq, ctxq, (mmsize/2)*5, tmpq, m9, m13
@@ -828,7 +862,7 @@ cglobal fft32_ %+ %2, 4, 4, 16, ctx, out, in, tmp
FFT8 m4, m5, m6, m7, m8, m9
-%if %3
+%if %2
movaps m0, [inq + 0*mmsize]
movaps m1, [inq + 1*mmsize]
movaps m2, [inq + 2*mmsize]
@@ -875,14 +909,24 @@ cglobal fft32_ %+ %2, 4, 4, 16, ctx, out, in, tmp
vextractf128 [outq + 16*14], m10, 1
vextractf128 [outq + 16*15], m5, 1
+%if %2
+ ret
+%else
+ RET
+%endif
+
+%if %2
+cglobal fft32_ns_float, 4, 4, 16, ctx, out, in, tmp
+ call ff_tx_fft32_asm_float_ %+ %1
RET
+%endif
%endmacro
%if ARCH_X86_64
-FFT32_FN avx, float, 0
-FFT32_FN avx, ns_float, 1
-FFT32_FN fma3, float, 0
-FFT32_FN fma3, ns_float, 1
+FFT32_FN avx, 0
+FFT32_FN avx, 1
+FFT32_FN fma3, 0
+FFT32_FN fma3, 1
%endif
%macro FFT_SPLIT_RADIX_DEF 1-2
@@ -923,17 +967,21 @@ ALIGN 16
%endif
%endmacro
-%macro FFT_SPLIT_RADIX_FN 3
+%macro FFT_SPLIT_RADIX_FN 2
INIT_YMM %1
-cglobal fft_sr_ %+ %2, 4, 8, 16, 272, lut, out, in, len, tmp, itab, rtab, tgt
- movsxd lenq, dword [lutq + AVTXContext.len]
- mov lutq, [lutq + AVTXContext.map]
+%if %2
+cglobal fft_sr_asm_float, 0, 0, 0, ctx, out, in, tmp, len, lut, itab, rtab, tgt
+%else
+cglobal fft_sr_float, 4, 9, 16, 272, ctx, out, in, tmp, len, lut, itab, rtab, tgt
+ movsxd lenq, dword [ctxq + AVTXContext.len]
+ mov lutq, [ctxq + AVTXContext.map]
mov tgtq, lenq
+%endif
; Bottom-most/32-point transform ===============================================
ALIGN 16
.32pt:
-%if %3
+%if %2
movaps m4, [inq + 4*mmsize]
movaps m5, [inq + 5*mmsize]
movaps m6, [inq + 6*mmsize]
@@ -947,7 +995,7 @@ ALIGN 16
FFT8 m4, m5, m6, m7, m8, m9
-%if %3
+%if %2
movaps m0, [inq + 0*mmsize]
movaps m1, [inq + 1*mmsize]
movaps m2, [inq + 2*mmsize]
@@ -972,7 +1020,7 @@ ALIGN 16
movaps [outq + 5*mmsize], m5
movaps [outq + 7*mmsize], m7
-%if %3
+%if %2
add inq, 8*mmsize
%else
add lutq, (mmsize/2)*8
@@ -1007,7 +1055,7 @@ ALIGN 16
SWAP m4, m1
SWAP m6, m3
-%if %3
+%if %2
movaps tx1_e0, [inq + 0*mmsize]
movaps tx1_e1, [inq + 1*mmsize]
movaps tx1_o0, [inq + 2*mmsize]
@@ -1021,7 +1069,7 @@ ALIGN 16
FFT16 tx1_e0, tx1_e1, tx1_o0, tx1_o1, tw_e, tw_o, tx2_o0, tx2_o1
-%if %3
+%if %2
movaps tx2_e0, [inq + 4*mmsize]
movaps tx2_e1, [inq + 5*mmsize]
movaps tx2_o0, [inq + 6*mmsize]
@@ -1038,7 +1086,7 @@ ALIGN 16
movaps tw_e, [tab_64_float]
vperm2f128 tw_o, tw_o, [tab_64_float + 64 - 4*7], 0x23
-%if %3
+%if %2
add inq, 8*mmsize
%else
add lutq, (mmsize/2)*8
@@ -1201,7 +1249,11 @@ FFT_SPLIT_RADIX_DEF 131072
sub lenq, 4*mmsize
jg .synth_deinterleave
+%if %2
+ ret
+%else
RET
+%endif
; 64-point deinterleave which only has to load 4 registers =====================
.64pt_deint:
@@ -1278,14 +1330,28 @@ FFT_SPLIT_RADIX_DEF 131072
vextractf128 [outq + 15*mmsize + 0], tw_o, 1
vextractf128 [outq + 15*mmsize + 16], tx2_e1, 1
+%if %2
+ ret
+%else
RET
+%endif
+
+%if %2
+cglobal fft_sr_ns_float, 4, 9, 16, 272, ctx, out, in, tmp, len, lut, itab, rtab, tgt
+ movsxd lenq, dword [ctxq + AVTXContext.len]
+ mov lutq, [ctxq + AVTXContext.map]
+ mov tgtq, lenq
+
+ call ff_tx_fft_sr_asm_float_ %+ %1
+ RET
+%endif
%endmacro
%if ARCH_X86_64
-FFT_SPLIT_RADIX_FN fma3, float, 0
-FFT_SPLIT_RADIX_FN fma3, ns_float, 1
+FFT_SPLIT_RADIX_FN fma3, 0
+FFT_SPLIT_RADIX_FN fma3, 1
%if HAVE_AVX2_EXTERNAL
-FFT_SPLIT_RADIX_FN avx2, float, 0
-FFT_SPLIT_RADIX_FN avx2, ns_float, 1
+FFT_SPLIT_RADIX_FN avx2, 0
+FFT_SPLIT_RADIX_FN avx2, 1
%endif
%endif
diff --git a/libavutil/x86/tx_float_init.c b/libavutil/x86/tx_float_init.c
index 5db0b57d13..9fd98103c8 100644
--- a/libavutil/x86/tx_float_init.c
+++ b/libavutil/x86/tx_float_init.c
@@ -43,6 +43,15 @@ TX_DECL_FN(fft_sr_ns, fma3)
TX_DECL_FN(fft_sr, avx2)
TX_DECL_FN(fft_sr_ns, avx2)
+TX_DECL_FN(fft8_asm, sse3)
+TX_DECL_FN(fft8_asm, avx)
+TX_DECL_FN(fft16_asm, avx)
+TX_DECL_FN(fft16_asm, fma3)
+TX_DECL_FN(fft32_asm, avx)
+TX_DECL_FN(fft32_asm, fma3)
+TX_DECL_FN(fft_sr_asm, fma3)
+TX_DECL_FN(fft_sr_asm, avx2)
+
#define DECL_INIT_FN(basis, interleave) \
static av_cold int b ##basis## _i ##interleave(AVTXContext *s, \
const FFTXCodelet *cd, \
@@ -70,30 +79,46 @@ const FFTXCodelet * const ff_tx_codelet_list_float_x86[] = {
TX_DEF(fft4_fwd, FFT, 4, 4, 2, 0, 192, b8_i0, sse2, SSE2, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
TX_DEF(fft4_inv, FFT, 4, 4, 2, 0, 128, NULL, sse2, SSE2, AV_TX_INPLACE | FF_TX_INVERSE_ONLY, 0),
TX_DEF(fft8, FFT, 8, 8, 2, 0, 128, b8_i0, sse3, SSE3, AV_TX_INPLACE, 0),
+ TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, 0),
TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 192, b8_i0, sse3, SSE3, AV_TX_INPLACE | FF_TX_PRESHUFFLE, 0),
TX_DEF(fft8, FFT, 8, 8, 2, 0, 256, b8_i0, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft8_asm, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft8_ns, FFT, 8, 8, 2, 0, 320, b8_i0, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16, FFT, 16, 16, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16, FFT, 16, 16, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft16_asm, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft16_ns, FFT, 16, 16, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
#if ARCH_X86_64
TX_DEF(fft32, FFT, 32, 32, 2, 0, 256, b8_i2, avx, AVX, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 320, b8_i2, avx, AVX, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32, FFT, 32, 32, 2, 0, 288, b8_i2, fma3, FMA3, AV_TX_INPLACE, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft32_asm, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft32_ns, FFT, 32, 32, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr, FFT, 64, 131072, 2, 0, 288, b8_i2, fma3, FMA3, 0, AV_CPU_FLAG_AVXSLOW),
+ TX_DEF(fft_sr_asm, FFT, 64, 131072, 2, 0, 352, b8_i2, fma3, FMA3,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW),
TX_DEF(fft_sr_ns, FFT, 64, 131072, 2, 0, 352, b8_i2, fma3, FMA3, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW),
#if HAVE_AVX2_EXTERNAL
TX_DEF(fft_sr, FFT, 64, 131072, 2, 0, 320, b8_i2, avx2, AVX2, 0,
AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
+ TX_DEF(fft_sr_asm, FFT, 64, 131072, 2, 0, 384, b8_i2, avx2, AVX2,
+ AV_TX_INPLACE | FF_TX_PRESHUFFLE | FF_TX_ASM_CALL, AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
TX_DEF(fft_sr_ns, FFT, 64, 131072, 2, 0, 384, b8_i2, avx2, AVX2, AV_TX_INPLACE | FF_TX_PRESHUFFLE,
AV_CPU_FLAG_AVXSLOW | AV_CPU_FLAG_SLOW_GATHER),
#endif
--
2.37.2.609.g9ff673ca1a
[-- Attachment #3: Type: text/plain, Size: 251 bytes --]
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next reply other threads:[~2022-09-03 1:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-03 1:41 Lynne [this message]
[not found] ` <NB0-fO---3-2@lynne.ee-NB0-j8B----2>
2022-09-03 1:42 ` [FFmpeg-devel] [PATCH 2/2] x86/tx_float: implement inverse MDCT AVX2 assembly Lynne
2022-09-03 20:55 ` Michael Niedermayer
2022-09-03 21:35 ` Lynne
2022-09-06 13:21 ` [FFmpeg-devel] [PATCH 1/2] x86/tx_float: add support for calling assembly functions from assembly Mattias Wadman
2022-09-06 13:45 ` Martin Storsjö
2022-09-06 13:46 ` Mattias Wadman
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