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wip: Bitmap operations SIMD logic refactor #942

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wip: Bitmap operations SIMD logic refactor #942

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PaulusParssinen
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@PaulusParssinen PaulusParssinen commented Jan 22, 2025 •
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wip, todo: pr description

TODO:

  • .NET Foundation third party notice for TensorPrimitives design
  • Guard Vector### logic behind IsSupported & IsHardwareAccelerated
  • Add Vector512 & Vector128 paths
  • Factor bitmap tests little-bit to own test bitop specific methods
  • ...

Follow-up work:

  • Refactor BITCOUNT logic similarly to be cross-platform and to follow "modern" .NET SIMD practices
  • Investigate following .NET SIMD best-practices more (look at TensorPrimitives etc.)
  • I briefly tried fast-path for the more common? two key bitop scenario, didn't have measurable wins so didn't go forward with that. I think there might be more to do here though
  • Investigate non-temporal stores after 256KB threshold.

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