5af89b3dcc
* std.crypto.chacha: support larger vectors on AVX2 and AVX512 targets Ryzen 7 7700, ChaCha20/8 stream, long outputs: Generic: 3268 MiB/s AVX2 : 6023 MiB/s AVX512 : 8086 MiB/s Bump the rand.chacha buffer a tiny bit to take advantage of this. More than 8 blocks doesn't seem to make any measurable difference. ChaChaPoly also gets a small performance boost from this, albeit Poly1305 remains the bottleneck. Generic: 707 MiB/s AVX2 : 981 MiB/s AVX512 : 1202 MiB/s aarch64 appears to generally benefit from 4-way vectorization. Verified on Apple Silicon, but also on a Cortex A72.
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