[FFmpeg-devel] [PATCH 2/3] x86/ac3dsp: add ff_float_to_fixed24_avx2()

Henrik Gramner henrik at gramner.com
Thu Nov 23 17:19:29 EET 2023


On Thu, Nov 23, 2023 at 12:51 PM James Almer <jamrial at gmail.com> wrote:
> movdqa wiht ymm is avx2. I could change it to movaps, but technically
> the registers contain floats and i don't know if any old AVX cpu has
> penalties for changing domains.

Fwiw I believe what domain the result of fp <-> int conversion
instructions belongs to actually differs between µarchs. Realistically
whether movaps or movdqa is used to store the result to memory is
unlikely to matter in practice though.


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