perf: replace the match based decoding logic with lookup table #253
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Can you run the benchmarks here to show the difference? For any fine performance improvements, we have to use benchmarks to prove it's making a difference. |
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The previous Impl while it was nice was significantly slower due to multiple branches, since we are likely to hit all branches there's no effective way for the CPU to be able to predict pipeline effectively
on the other hand a lookup table is read from memory and placed in a single cacheline.
Results: increase in performance in decode