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Strengthen fallback algorithm #5

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tkaitchuck opened this issue Mar 4, 2019 · 1 comment
Closed

Strengthen fallback algorithm #5

tkaitchuck opened this issue Mar 4, 2019 · 1 comment

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@tkaitchuck
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The fallback algorithm was weakened for speed. It could be better if there were a hardware reverse bits instruction such as exists on ARM processors.
Figure out how to take advantage of this. This could be done by either introducing more special case hardware instructions, or falling back onto generic autovectorization with something better than a rotate randomize bits.
@tkaitchuck
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Done. It is now based on splitmix64. There is potential for acceleration on other architectures but it is now as strong as a generic is likely to get.

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@tkaitchuck