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 258074C521 for ; Sun, 28 Jul 2024 18:48:00 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 7E88268D7A9; Sun, 28 Jul 2024 21:47:58 +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 D417168D6ED for ; Sun, 28 Jul 2024 21:47:51 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id 5A991C0137 for ; Sun, 28 Jul 2024 21:47:51 +0300 (EEST) From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= To: ffmpeg-devel@ffmpeg.org Date: Sun, 28 Jul 2024 21:47:51 +0300 Message-ID: <20240728184751.76589-1-remi@remlab.net> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] lavc/rv34dsp: use saturating add/sub for R-V V DC add 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: T-Head C908 (cycles): rv34_idct_dc_add_c: 113.2 rv34_idct_dc_add_rvv_i32: 48.5 (before) rv34_idct_dc_add_rvv_i32: 39.5 (after) --- libavcodec/riscv/rv34dsp_rvv.S | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/libavcodec/riscv/rv34dsp_rvv.S b/libavcodec/riscv/rv34dsp_rvv.S index 98871507c2..70c88fdca5 100644 --- a/libavcodec/riscv/rv34dsp_rvv.S +++ b/libavcodec/riscv/rv34dsp_rvv.S @@ -42,14 +42,17 @@ func ff_rv34_idct_dc_add_rvv, zve32x mul t1, t1, a2 addi t1, t1, 512 srai t1, t1, 10 - vsetivli zero, 4*4, e16, m2, ta, ma - vzext.vf2 v2, v0 - vadd.vx v2, v2, t1 - vmax.vx v2, v2, zero - vsetvli zero, zero, e8, m1, ta, ma - vnclipu.wi v0, v2, 0 - vsetivli zero, 4, e8, mf4, ta, ma - vsse32.v v0, (a0), a1 + vsetivli zero, 4*4, e8, m2, ta, ma + bgez t1, 1f + neg t1, t1 + vssubu.vx v0, v0, t1 + vsetivli zero, 4, e8, mf4, ta, ma + vsse32.v v0, (a0), a1 + ret +1: + vsaddu.vx v0, v0, t1 + vsetivli zero, 4, e8, mf4, ta, ma + vsse32.v v0, (a0), a1 ret endfunc -- 2.45.2 _______________________________________________ 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".