Le 3 juin 2025 19:15:57 GMT+03:00, Niklas Haas <ffm...@haasn.xyz> a écrit : >On Mon, 02 Jun 2025 15:41:33 -0300 James Almer <jamr...@gmail.com> wrote: >> GCC/Clang is smart enough to emit minss/maxss the same way as these >> functions. >> The only theoretical benefit was in x86_32, where x87 floats are used, but >> the >> penalty of making the clipping opaque to the compiler's scheduler plus moving >> values from mmx regs to xmm and back will offset any potential speedup. >> x86_32 builds targetting anything made in the last two decades and a half >> should use -msse -mfp=sse anyway. > >As mention in the another thread, x87 FPU usage causes non-bitexact results in >swscale. Should we at this point consider setting -mfpu=sse by default for >x86_32 builds?
As a general rule, I prefer to leave the choice of compiler flags to the distributor than to hard-code them in project specific build scripts. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
