How much do amd64 microarchitecture levels help in Go?
Hacker News (AI keywords)·2 days ago·Benchmark
Daniel Lemire tests Go’s GOAMD64 levels using Roaring Bitmaps on a modern Intel Xeon.
v2 brings strong gains where popcnt matters, while v3 adds further speedups in dense bitmap and set-operation workloads through AVX2.
v4, despite implying AVX-512 support, shows no meaningful improvement in these benchmarks, likely due to current Go compiler limitations.
