From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 565104B011 for ; Sun, 26 May 2024 05:34:30 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id D3D7568D431; Sun, 26 May 2024 08:34:27 +0300 (EEST) Received: from ursule.remlab.net (vps-a2bccee9.vps.ovh.net [51.75.19.47]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 39D3168C704 for ; Sun, 26 May 2024 08:34:22 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id 6C63AC006F for ; Sun, 26 May 2024 08:34:21 +0300 (EEST) From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= To: ffmpeg-devel@ffmpeg.org Date: Sun, 26 May 2024 08:34:21 +0300 Message-ID: <20240526053421.4122-1-remi@remlab.net> X-Mailer: git-send-email 2.45.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] lavc/lpc: optimise RVV vector type for compute_autocorr 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: On SpacemiT X60 (with len == 4000): autocorr_10_c: 2303.7 autocorr_10_rvv_f64: 1411.5 (before) autocorr_10_rvv_f64: 842.2 (after) --- libavcodec/riscv/lpc_init.c | 3 ++- libavcodec/riscv/lpc_rvv.S | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/libavcodec/riscv/lpc_init.c b/libavcodec/riscv/lpc_init.c index ab91956f2d..f21eca4caa 100644 --- a/libavcodec/riscv/lpc_init.c +++ b/libavcodec/riscv/lpc_init.c @@ -36,7 +36,8 @@ av_cold void ff_lpc_init_riscv(LPCContext *c) if ((flags & AV_CPU_FLAG_RVV_F64) && (flags & AV_CPU_FLAG_RVB_ADDR)) { c->lpc_apply_welch_window = ff_lpc_apply_welch_window_rvv; - if (ff_get_rv_vlenb() >= c->max_order) + if ((flags & AV_CPU_FLAG_RVB_BASIC) && + ff_get_rv_vlenb() >= c->max_order) c->lpc_compute_autocorr = ff_lpc_compute_autocorr_rvv; } #endif diff --git a/libavcodec/riscv/lpc_rvv.S b/libavcodec/riscv/lpc_rvv.S index d4ea515fee..024837102c 100644 --- a/libavcodec/riscv/lpc_rvv.S +++ b/libavcodec/riscv/lpc_rvv.S @@ -86,9 +86,10 @@ func ff_lpc_apply_welch_window_rvv, zve64d ret endfunc -func ff_lpc_compute_autocorr_rvv, zve64d +func ff_lpc_compute_autocorr_rvv, zve64d, zbb + vtype_vli t1, a2, t2, e64, ta, ma li t0, 1 - vsetvli zero, a2, e64, m8, ta, ma + vsetvl zero, a2, t1 fcvt.d.l ft0, t0 vle64.v v0, (a0) sh3add a0, a2, a0 # data += lag -- 2.45.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".