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[79.124.17.100]) by mx.google.com with ESMTP id d4-20020a056402144400b0044e85e75120si423532edx.84.2022.09.04.06.55.42; Sun, 04 Sep 2022 06:55:43 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 8A8D468BACA; Sun, 4 Sep 2022 16:55:09 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from ursule.remlab.net (vps-a2bccee9.vps.ovh.net [51.75.19.47]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id D517E68BAAE for ; Sun, 4 Sep 2022 16:55:04 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id A626AC00AE for ; Sun, 4 Sep 2022 16:55:04 +0300 (EEST) From: remi@remlab.net To: ffmpeg-devel@ffmpeg.org Date: Sun, 4 Sep 2022 16:55:01 +0300 Message-Id: <20220904135503.116704-8-remi@remlab.net> X-Mailer: git-send-email 2.37.2 In-Reply-To: <3372981.QJadu78ljV@basile.remlab.net> References: <3372981.QJadu78ljV@basile.remlab.net> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 08/10] riscv: float reversed vector multiplication with RVV X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: AjPzfA+f9QpC From: Rémi Denis-Courmont --- libavutil/riscv/float_dsp_init.c | 3 +++ libavutil/riscv/float_dsp_rvv.S | 22 ++++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/libavutil/riscv/float_dsp_init.c b/libavutil/riscv/float_dsp_init.c index 2165394585..1183460181 100644 --- a/libavutil/riscv/float_dsp_init.c +++ b/libavutil/riscv/float_dsp_init.c @@ -30,6 +30,8 @@ void ff_vector_fmul_scalar_rvv(float *dst, const float *src, float mul, int len); void ff_vector_fmul_add_rvv(float *dst, const float *src0, const float *src1, const float *src2, int len); +void ff_vector_fmul_reverse_rvv(float *dst, const float *src0, + const float *src1, int len); void ff_butterflies_float_rvv(float *v1, float *v2, int len); void ff_vector_dmul_rvv(double *dst, const double *src0, const double *src1, @@ -48,6 +50,7 @@ av_cold void ff_float_dsp_init_riscv(AVFloatDSPContext *fdsp) fdsp->vector_fmac_scalar = ff_vector_fmac_scalar_rvv; fdsp->vector_fmul_scalar = ff_vector_fmul_scalar_rvv; fdsp->vector_fmul_add = ff_vector_fmul_add_rvv; + fdsp->vector_fmul_reverse = ff_vector_fmul_reverse_rvv; fdsp->butterflies_float = ff_butterflies_float_rvv; if (flags & AV_CPU_FLAG_ZVE64D) { diff --git a/libavutil/riscv/float_dsp_rvv.S b/libavutil/riscv/float_dsp_rvv.S index 61beb868b0..e3738ef7c5 100644 --- a/libavutil/riscv/float_dsp_rvv.S +++ b/libavutil/riscv/float_dsp_rvv.S @@ -98,6 +98,28 @@ func ff_vector_fmul_add_rvv ret endfunc +// (a0) = (a1) * reverse(a2) [0..a3-1] +func ff_vector_fmul_reverse_rvv + add t3, a3, -1 + li t2, -4 // byte stride + slli t3, t3, 2 + add a2, a2, t3 + +1: vsetvli t0, a3, e32, m8, ta, ma + slli t1, t0, 2 + vle32.v v16, (a1) + add a1, a1, t1 + vlse32.v v24, (a2), t2 + sub a2, a2, t1 + vfmul.vv v16, v16, v24 + sub a3, a3, t0 + vse32.v v16, (a0) + add a0, a0, t1 + bnez a3, 1b + + ret +endfunc + // (a0) = (a0) + (a1), (a1) = (a0) - (a1) [0..a2-1] func ff_butterflies_float_rvv 1: vsetvli t0, a2, e32, m8, ta, ma