On Sun, Oct 25, 2015 at 12:08 AM, James Almer <jamr...@gmail.com> wrote:
> + __asm__ ("bsfq %1,%0" : "=r" (c) : "rm" (v));Shouldn't we be using tzcnt instead of bsf? Or rep bsf (which is the same opcode as tzcnt) if we need to support ancient compilers. tzcnt is generally faster than bsf on modern CPUs and backwards-compatible with older CPUs. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
