Change #270210
| Category | ffmpeg |
| Changed by | Kacper Michajłow <kasper93@gmail.com> |
| Changed at | Tue 09 Jun 2026 19:54:21 |
| Repository | https://git.ffmpeg.org/ffmpeg.git |
| Project | ffmpeg |
| Branch | master |
| Revision | f43f609bb8a288e62a954dbde497ec6d0e16cae6 |
Comments
avutil/x86/tx_float: add missing vzeroupper to 15xM PFA FFT The AVX2 15xM PFA FFT calls its second-dimension subtransform with dirty YMM. That subtransform may be a legacy-SSE codelet (fft4 is SSE2 only), causing AVX<->SSE transition penalties. Clear them after the first dimension, before the calls. Detected with `sde64 -ast` FATE job. Fixes: ace42cf581f8c06872bfb58cf575d9e8bd398c0a
Changed files
- libavutil/x86/tx_float.asm