djb2 hash

djb2 hash in WebAssembly and Javascript

Benchmark

Interesting observation that djb2 hash is remarkably faster in WASM, despite operating on 32-bit ints (like all bit ops in JS) equal performance, and despite having to copy data to WASM memory, while JS has direct access:

Edit: Less interesting now, the issue was coercing additions to 32-bit operations. Thank you to @mraleph for teaching me this lesson:

wasm (add): 5573.926ms
b390d842
js (add): 5220.253ms
b390d842
wasm (xor): 4876.401ms
8c94c642
js (xor): 4450.471ms
8c94c642