* Re: [FFmpeg-devel] [PATCH v3] gcc: Don't disable '-ftree-vectorize' if gcc version higher than 13. [not found] <20250612104645.8990-1-jiawei@iscas.ac.cn> @ 2025-06-12 11:08 ` Martin Storsjö 2025-06-12 11:11 ` Martin Storsjö 0 siblings, 1 reply; 2+ messages in thread From: Martin Storsjö @ 2025-06-12 11:08 UTC (permalink / raw) To: Jiawei Cc: michael, george, kieran618, remi, post, quinkblack, ffmpeg-devel, andreas.rheinhardt 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` flag. > Through it can optimizations in loop analysis and SIMD code generation. > > Version log: > Only allow GCC versions >= 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 RVV. 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. // 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". ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [FFmpeg-devel] [PATCH v3] gcc: Don't disable '-ftree-vectorize' if gcc version higher than 13. 2025-06-12 11:08 ` [FFmpeg-devel] [PATCH v3] gcc: Don't disable '-ftree-vectorize' if gcc version higher than 13 Martin Storsjö @ 2025-06-12 11:11 ` Martin Storsjö 0 siblings, 0 replies; 2+ messages in thread From: Martin Storsjö @ 2025-06-12 11:11 UTC (permalink / raw) To: Jiawei Cc: michael, george, kieran618, remi, post, quinkblack, ffmpeg-devel, andreas.rheinhardt On Thu, 12 Jun 2025, Martin Storsjö 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` flag. >> Through it can optimizations in loop analysis and SIMD code generation. >> >> Version log: >> Only allow GCC versions >= 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 RVV. > > 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". ^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-06-12 11:08 ` [FFmpeg-devel] [PATCH v3] gcc: Don't disable '-ftree-vectorize' if gcc version higher than 13 Martin Storsjö
2025-06-12 11:11 ` Martin Storsjö
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