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 B5F384A243 for ; Sat, 25 May 2024 15:39:09 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id B7A8168D547; Sat, 25 May 2024 18:38:49 +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 7DE1D68BEFE for ; Sat, 25 May 2024 18:38:41 +0300 (EEST) Received: from basile.remlab.net (localhost [IPv6:::1]) by ursule.remlab.net (Postfix) with ESMTP id D4F8AC0215 for ; Sat, 25 May 2024 18:38:40 +0300 (EEST) From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= To: ffmpeg-devel@ffmpeg.org Date: Sat, 25 May 2024 18:38:39 +0300 Message-ID: <20240525153840.78147-4-remi@remlab.net> X-Mailer: git-send-email 2.45.1 In-Reply-To: <20240525153840.78147-1-remi@remlab.net> References: <20240525153840.78147-1-remi@remlab.net> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 4/5] lavc/vp8dsp: save one R-V GPR 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: This saves one instruction and frees up A5, which will be repurposed in later changes. Unfortunately, we need to add quite a lot of alternative code for this. --- libavcodec/riscv/vp8dsp_rvv.S | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/libavcodec/riscv/vp8dsp_rvv.S b/libavcodec/riscv/vp8dsp_rvv.S index 545c2e9728..a4fcd158a5 100644 --- a/libavcodec/riscv/vp8dsp_rvv.S +++ b/libavcodec/riscv/vp8dsp_rvv.S @@ -202,23 +202,31 @@ func ff_put_vp8_epel\len\()_\type\()\size\()_rvv, zve32x 1: addi a4, a4, -1 .ifc \type,v - mv a5, a3 + sub t6, a2, a3 + add a7, a2, a3 .else - li a5, 1 + addi t6, a2, -1 + addi a7, a2, 1 .endif - sub t6, a2, a5 - add a7, a2, a5 - vle8.v v24, (a2) vle8.v v22, (t6) vle8.v v26, (a7) - add a7, a7, a5 +.ifc \type,v + add a7, a7, a3 +.else + addi a7, a7, 1 +.endif vle8.v v28, (a7) vwmulu.vx v16, v24, t2 vwmulu.vx v20, v26, t3 .ifc \size,6 - sub t6, t6, a5 - add a7, a7, a5 +.ifc \type,v + sub t6, t6, a3 + add a7, a7, a3 +.else + addi t6, t6, -1 + addi a7, a7, 1 +.endif vle8.v v24, (t6) vle8.v v26, (a7) vwmaccu.vx v16, t0, v24 -- 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".