On Thu, 10 Jul 2025 17:10:42 +0200 Niklas Haas <[email protected]> wrote: > From: Niklas Haas <[email protected]> > > Requested by a user. Even with autovectorization enabled, the compiler > performs a quite poor job of optimizing this function, due to not being > able to take advantage of the pmaxub + pcmpeqb trick for counting the number > of pixels less than or equal-to a threshold. > > blackdetect8_c: 4627.2 ( 1.00x) > blackdetect8_avx2: 163.9 (28.24x) > blackdetect16_c: 2474.9 ( 1.00x) > blackdetect16_avx2: 155.9 (15.88x)
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