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 C3BD444F5C for ; Mon, 12 Dec 2022 20:32:50 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id DDFC868BDE8; Mon, 12 Dec 2022 22:32:47 +0200 (EET) Received: from mail-pg1-f180.google.com (mail-pg1-f180.google.com [209.85.215.180]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id E8AB268BDCA for ; Mon, 12 Dec 2022 22:32:41 +0200 (EET) Received: by mail-pg1-f180.google.com with SMTP id f3so9032393pgc.2 for ; Mon, 12 Dec 2022 12:32:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=zcRActndez+ksY/RykW34kEA6FYyaEKGR5gszLUZdns=; b=lgK8/h61VptNRZcDr0KSRcBYA9OGmpOE5DaflNNVVp6dA7WCWIaau5HuFfAtA1oQrT j8zYuHJcTiHBl+qUiUdUoQt7pNPvD9vlWGD+S5iW3JUUaB+ddmTWfqN/PGPIghoQLHeC ByChmR/z7QP62utiDGqBN1TBfSxu6nHazFKIwF9hgLJtkEuyIGwzOY/CXxfZCCUSCPnt Gnj6pfaw7PBF/figm6wjTruQzxTKqbvtu7X5AWW6UCG24AXrS/9smpwrznhDMySu+0ZK yD9Hfpz1Y/orWphB2R/vjqe+HReeZ+FXRf/omDcskwapLib6zNrUoyhE2t+pzySUrWnz HEuw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=zcRActndez+ksY/RykW34kEA6FYyaEKGR5gszLUZdns=; b=S1GthIE+DNk2ok9LzHOznbuoktAYZGC1sWxbluxk7MtKh9LhCcEhTYw3WeuhNTotEl Rfulm0RvvxVHnstU1XQ2uoFPFdqOtyQfiTHgwWlHNwQMv1oufaYp/a4beZxWeha1Gn5+ u1lXe5gC4phHD1e7MqPj2ivSeJZbsnwIwvJsuWJvbdayI50w5h9KQLxUKFPmBmJy7o3C kKl3VHq9xV8jOkTrT7lNWCrpwcT/jyn3+I5sSFJcfeBUQVIPM1GkUizMpxelio5O37s7 txt53iQjSXz4jUs2h/RaiId6Oey8sM+9H52T7GYIxG0d6va30jviLF7HpdnSQfjtwCg+ pXHg== X-Gm-Message-State: ANoB5pnXRoE/FIgiO5XGkXpT7TiABIea3xId8Wlh07kFML5O/rtOgobj XrGgXqH30gE8FW2jqVe1MSvb9j4SXcDmvbGkNI9Xv3xn X-Google-Smtp-Source: AA0mqf7XyFBa4IwM2Lmtx6GReX6bjpXsBH/fj0sp78w5SfAkARBMT2In7GWknkWZzakHhaU2fbsOCn9ULF1BmsrQ+Iw= X-Received: by 2002:a63:155e:0:b0:476:95a8:de91 with SMTP id 30-20020a63155e000000b0047695a8de91mr68775030pgv.102.1670877159720; Mon, 12 Dec 2022 12:32:39 -0800 (PST) MIME-Version: 1.0 References: <185cfb01d90e57$c22e5420$468afc60$@gmail.com> <24ff042f-7281-a1e0-9b6f-4e26e0560d11@rothenpieler.org> In-Reply-To: <24ff042f-7281-a1e0-9b6f-4e26e0560d11@rothenpieler.org> From: Thomson Tan Date: Mon, 12 Dec 2022 12:32:28 -0800 Message-ID: To: FFmpeg development discussions and patches X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [FFmpeg-devel] [PATCH] configure: Change _cflags_noopt for MSVC to -Od 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: Thanks. Wondering why and where DCE is needed in FFmpeg build? On Mon, Dec 12, 2022 at 12:26 PM Timo Rothenpieler wrote: > On 12.12.2022 19:30, lilotom@gmail.com wrote: > > Currently -O1 is set to _cflags_noopt, but -O1 is actually for size > > optimization instead of no-opt which causes size optimized binaries > > been built with --disable-optimizations. > > It's like this very intentionally, since ffmpeg relies on > dead-code-elimination in a lot of places, which MSVC does not perform > when optimizations are turned off. > So optimizations cannot be fully turned off on MSVC. > _______________________________________________ > 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". > _______________________________________________ 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".