Comment by mwsherman

I recommend starting with SWAR [1] before SIMD. Our registers are typically 64 bits, and one can try out SIMD patterns without taking a dependency on particular hardware.

This will only be effective if the data you’re working on is smaller than 64 bits. If you’re working with bytes, for example, you might get 8x parallelism.

[1] https://en.wikipedia.org/wiki/SWAR