WIP: Implement prefetch of mvs

Open Kyle Siefring requested to merge KyleSiefring/dav1d:prefetch_1 into master

32 fps -> 33.5 fps on Cortex-A55

I don't think this will help on out of order cores. Would like to see results to see if it hurts too much.


  • Investigate doing multiple rows
  • Optimize for screen edges?
  • Benchmark on other cores
  • Shorten filter length for 4 tap
  • Make Arm specific
  • Limit prefetch for large motion vectors
  • Prefetch for warped motion and rescale
  • More???
Edited by Kyle Siefring

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