From dbd12523a407824a8ccbb9246a908f3ebb4b3376 Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Sun, 2 Mar 2014 22:54:34 +0100 Subject: aarch64: float_dsp NEON assembler Ported from arm NEON and added vector_dmul_scalar. Functions between 1.5 and 5 times faster than the C implementations using Apple's clang-503.0.19 on A7. --- libavutil/aarch64/Makefile | 5 +- libavutil/aarch64/float_dsp_init.c | 69 +++++++++++++ libavutil/aarch64/float_dsp_neon.S | 202 +++++++++++++++++++++++++++++++++++++ 3 files changed, 275 insertions(+), 1 deletion(-) create mode 100644 libavutil/aarch64/float_dsp_init.c create mode 100644 libavutil/aarch64/float_dsp_neon.S (limited to 'libavutil/aarch64') diff --git a/libavutil/aarch64/Makefile b/libavutil/aarch64/Makefile index 13d26a1520..5613813ba8 100644 --- a/libavutil/aarch64/Makefile +++ b/libavutil/aarch64/Makefile @@ -1 +1,4 @@ -OBJS += aarch64/cpu.o +OBJS += aarch64/cpu.o \ + aarch64/float_dsp_init.o \ + +NEON-OBJS += aarch64/float_dsp_neon.o diff --git a/libavutil/aarch64/float_dsp_init.c b/libavutil/aarch64/float_dsp_init.c new file mode 100644 index 0000000000..37d34c96d0 --- /dev/null +++ b/libavutil/aarch64/float_dsp_init.c @@ -0,0 +1,69 @@ +/* + * ARM NEON optimised Float DSP functions + * Copyright (c) 2008 Mans Rullgard + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#include "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "libavutil/float_dsp.h" +#include "cpu.h" + +void ff_vector_fmul_neon(float *dst, const float *src0, const float *src1, + int len); + +void ff_vector_fmac_scalar_neon(float *dst, const float *src, float mul, + int len); + +void ff_vector_fmul_scalar_neon(float *dst, const float *src, float mul, + int len); + +void ff_vector_dmul_scalar_neon(double *dst, const double *src, double mul, + int len); + +void ff_vector_fmul_window_neon(float *dst, const float *src0, + const float *src1, const float *win, int len); + +void ff_vector_fmul_add_neon(float *dst, const float *src0, const float *src1, + const float *src2, int len); + +void ff_vector_fmul_reverse_neon(float *dst, const float *src0, + const float *src1, int len); + +void ff_butterflies_float_neon(float *v1, float *v2, int len); + +float ff_scalarproduct_float_neon(const float *v1, const float *v2, int len); + +av_cold void ff_float_dsp_init_aarch64(AVFloatDSPContext *fdsp) +{ + int cpu_flags = av_get_cpu_flags(); + + if (have_neon(cpu_flags)) { + fdsp->butterflies_float = ff_butterflies_float_neon; + fdsp->scalarproduct_float = ff_scalarproduct_float_neon; + fdsp->vector_dmul_scalar = ff_vector_dmul_scalar_neon; + fdsp->vector_fmul = ff_vector_fmul_neon; + fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_neon; + fdsp->vector_fmul_add = ff_vector_fmul_add_neon; + fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_neon; + fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_neon; + fdsp->vector_fmul_window = ff_vector_fmul_window_neon; + } +} diff --git a/libavutil/aarch64/float_dsp_neon.S b/libavutil/aarch64/float_dsp_neon.S new file mode 100644 index 0000000000..776542c4a9 --- /dev/null +++ b/libavutil/aarch64/float_dsp_neon.S @@ -0,0 +1,202 @@ +/* + * ARM NEON optimised Float DSP functions + * Copyright (c) 2008 Mans Rullgard + * Copyright (c) 2014 Janne Grunau + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "config.h" +#include "asm.S" + +function ff_vector_fmul_neon, export=1 +1: subs w3, w3, #16 + ld1 {v0.4S, v1.4S}, [x1], #32 + ld1 {v2.4S, v3.4S}, [x1], #32 + ld1 {v4.4S, v5.4S}, [x2], #32 + ld1 {v6.4S, v7.4S}, [x2], #32 + fmul v16.4S, v0.4S, v4.4S + fmul v17.4S, v1.4S, v5.4S + fmul v18.4S, v2.4S, v6.4S + fmul v19.4S, v3.4S, v7.4S + st1 {v16.4S, v17.4S}, [x0], #32 + st1 {v18.4S, v19.4S}, [x0], #32 + b.ne 1b + ret +endfunc + +function ff_vector_fmac_scalar_neon, export=1 + mov x3, #-32 +1: subs w2, w2, #16 + ld1 {v16.4S, v17.4S}, [x0], #32 + ld1 {v18.4S, v19.4S}, [x0], x3 + ld1 {v4.4S, v5.4S}, [x1], #32 + ld1 {v6.4S, v7.4S}, [x1], #32 + fmla v16.4S, v4.4S, v0.S[0] + fmla v17.4S, v5.4S, v0.S[0] + fmla v18.4S, v6.4S, v0.S[0] + fmla v19.4S, v7.4S, v0.S[0] + st1 {v16.4S, v17.4S}, [x0], #32 + st1 {v18.4S, v19.4S}, [x0], #32 + b.ne 1b + ret +endfunc + +function ff_vector_fmul_scalar_neon, export=1 + mov w4, #15 + bics w3, w2, w4 + dup v16.4S, v0.S[0] + b.eq 3f + ld1 {v0.4S, v1.4S}, [x1], #32 +1: subs w3, w3, #16 + fmul v0.4S, v0.4S, v16.4S + ld1 {v2.4S, v3.4S}, [x1], #32 + fmul v1.4S, v1.4S, v16.4S + fmul v2.4S, v2.4S, v16.4S + st1 {v0.4S, v1.4S}, [x0], #32 + fmul v3.4S, v3.4S, v16.4S + b.eq 2f + ld1 {v0.4S, v1.4S}, [x1], #32 + st1 {v2.4S, v3.4S}, [x0], #32 + b 1b +2: ands w2, w2, #15 + st1 {v2.4S, v3.4S}, [x0], #32 + b.eq 4f +3: ld1 {v0.4S}, [x1], #16 + fmul v0.4S, v0.4S, v16.4S + st1 {v0.4S}, [x0], #16 + subs w2, w2, #4 + b.gt 3b +4: ret +endfunc + +function ff_vector_dmul_scalar_neon, export=1 + dup v16.2D, v0.D[0] + ld1 {v0.2D, v1.2D}, [x1], #32 +1: subs w2, w2, #8 + fmul v0.2D, v0.2D, v16.2D + ld1 {v2.2D, v3.2D}, [x1], #32 + fmul v1.2D, v1.2D, v16.2D + fmul v2.2D, v2.2D, v16.2D + st1 {v0.2D, v1.2D}, [x0], #32 + fmul v3.2D, v3.2D, v16.2D + ld1 {v0.2D, v1.2D}, [x1], #32 + st1 {v2.2D, v3.2D}, [x0], #32 + b.gt 1b + ret +endfunc + +function ff_vector_fmul_window_neon, export=1 + sxtw x4, w4 // len + sub x2, x2, #8 + sub x5, x4, #2 + add x2, x2, x5, lsl #2 // src1 + 4 * (len - 4) + add x6, x3, x5, lsl #3 // win + 8 * (len - 2) + add x5, x0, x5, lsl #3 // dst + 8 * (len - 2) + mov x7, #-16 + ld1 {v0.4S}, [x1], #16 // s0 + ld1 {v2.4S}, [x3], #16 // wi + ld1 {v1.4S}, [x2], x7 // s1 +1: ld1 {v3.4S}, [x6], x7 // wj + subs x4, x4, #4 + fmul v17.4S, v0.4S, v2.4S // s0 * wi + rev64 v4.4S, v1.4S + rev64 v5.4S, v3.4S + rev64 v17.4S, v17.4S + ext v4.16B, v4.16B, v4.16B, #8 // s1_r + ext v5.16B, v5.16B, v5.16B, #8 // wj_r + ext v17.16B, v17.16B, v17.16B, #8 // (s0 * wi)_rev + fmul v16.4S, v0.4S, v5.4S // s0 * wj_r + fmla v17.4S, v1.4S, v3.4S // (s0 * wi)_rev + s1 * wj + b.eq 2f + ld1 {v0.4S}, [x1], #16 + fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi + st1 {v17.4S}, [x5], x7 + ld1 {v2.4S}, [x3], #16 + ld1 {v1.4S}, [x2], x7 + st1 {v16.4S}, [x0], #16 + b 1b +2: + fmls v16.4S, v4.4S, v2.4S // s0 * wj_r - s1_r * wi + st1 {v17.4S}, [x5], x7 + st1 {v16.4S}, [x0], #16 + ret +endfunc + +function ff_vector_fmul_add_neon, export=1 + ld1 {v0.4S, v1.4S}, [x1], #32 + ld1 {v2.4S, v3.4S}, [x2], #32 + ld1 {v4.4S, v5.4S}, [x3], #32 +1: subs w4, w4, #8 + fmla v4.4S, v0.4S, v2.4S + fmla v5.4S, v1.4S, v3.4S + b.eq 2f + ld1 {v0.4S, v1.4S}, [x1], #32 + ld1 {v2.4S, v3.4S}, [x2], #32 + st1 {v4.4S, v5.4S}, [x0], #32 + ld1 {v4.4S, v5.4S}, [x3], #32 + b 1b +2: st1 {v4.4S, v5.4S}, [x0], #32 + ret +endfunc + +function ff_vector_fmul_reverse_neon, export=1 + sxtw x3, w3 + add x2, x2, x3, lsl #2 + sub x2, x2, #32 + mov x4, #-32 + ld1 {v2.4S, v3.4S}, [x2], x4 + ld1 {v0.4S, v1.4S}, [x1], #32 +1: subs x3, x3, #8 + rev64 v3.4S, v3.4S + rev64 v2.4S, v2.4S + ext v3.16B, v3.16B, v3.16B, #8 + ext v2.16B, v2.16B, v2.16B, #8 + fmul v16.4S, v0.4S, v3.4S + fmul v17.4S, v1.4S, v2.4S + b.eq 2f + ld1 {v2.4S, v3.4S}, [x2], x4 + ld1 {v0.4S, v1.4S}, [x1], #32 + st1 {v16.4S, v17.4S}, [x0], #32 + b 1b +2: st1 {v16.4S, v17.4S}, [x0], #32 + ret +endfunc + +function ff_butterflies_float_neon, export=1 +1: ld1 {v0.4S}, [x0] + ld1 {v1.4S}, [x1] + subs w2, w2, #4 + fsub v2.4S, v0.4S, v1.4S + fadd v3.4S, v0.4S, v1.4S + st1 {v2.4S}, [x1], #16 + st1 {v3.4S}, [x0], #16 + b.gt 1b + ret +endfunc + +function ff_scalarproduct_float_neon, export=1 + movi v2.4S, #0 +1: ld1 {v0.4S}, [x0], #16 + ld1 {v1.4S}, [x1], #16 + subs w2, w2, #4 + fmla v2.4S, v0.4S, v1.4S + b.gt 1b + faddp v0.4S, v2.4S, v2.4S + faddp s0, v0.2S + ret +endfunc -- cgit v1.2.3