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[2001:470:27:11::2]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553ac1e0cb9sm76523e87.201.2025.06.12.04.11.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Jun 2025 04:11:35 -0700 (PDT) Date: Thu, 12 Jun 2025 14:11:33 +0300 (EEST) From: =?ISO-8859-15?Q?Martin_Storsj=F6?= To: Jiawei In-Reply-To: Message-ID: <19444a95-4c7c-ee43-491e-1b1bdbdd02b@martin.st> References: <20250612104645.8990-1-jiawei@iscas.ac.cn> MIME-Version: 1.0 X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [FFmpeg-devel] [PATCH v3] gcc: Don't disable '-ftree-vectorize' if gcc version higher than 13. 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 Cc: michael@niedermayer.cc, george@nsup.org, kieran618@googlemail.com, remi@remlab.net, post@frankplowman.com, quinkblack@foxmail.com, ffmpeg-devel@ffmpeg.org, andreas.rheinhardt@outlook.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-15"; Format="flowed" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: On Thu, 12 Jun 2025, Martin Storsj=F6 wrote: > On Thu, 12 Jun 2025, Jiawei wrote: > >> This patch modifies the FFmpeg build system to allow gcc use = >> '-ftree-vectorize' >> option in newer releases. >> = >> Modern GCC versions can be benefit when using the `-ftree-vectorize` fla= g. >> Through it can optimizations in loop analysis and SIMD code generation. >> = >> Version log: >> Only allow GCC versions >=3D 13 to use -ftree-vectorize. >> Modify the commit description. >> = >> Disscussion see: >> https://patchwork.ffmpeg.org/project/ffmpeg/patch/20250521061750.54882-1= -jiawei@iscas.ac.cn/ >> = > > Thanks for removing the somewhat misleading references to AVX, SVE and RV= V. > > But please do include the references to the earlier reverted attempt at = > reenabling this - that is key to why this may work better now than it did = > last time. And to make it clear: The commit message itself really should contain this = information, it's not enough to reference information elsewhere on = patchwork/ML archives for such essential parts of the change. // Martin _______________________________________________ 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".