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blake2s: use math.bits rotate functions instead of ad-hoc implementation
This makes code more readable and idiomatic. Updates golang/go#31456 Benchstat: name old time/op new time/op delta Write64-8 211ns ± 6% 205ns ± 2% ~ (p=0.243 n=10+9) Write1K-8 3.26µs ± 3% 3.12µs ± 2% -4.44% (p=0.000 n=9+9) Sum64-8 227ns ± 5% 217ns ± 6% -4.58% (p=0.009 n=10+10) Sum1K-8 3.28µs ± 2% 3.31µs ± 4% ~ (p=0.412 n=10+9) name old speed new speed delta Write64-8 303MB/s ± 6% 312MB/s ± 1% ~ (p=0.203 n=10+8) Write1K-8 314MB/s ± 3% 329MB/s ± 2% +4.64% (p=0.000 n=9+9) Sum64-8 281MB/s ± 5% 295MB/s ± 5% +4.93% (p=0.009 n=10+10) Sum1K-8 313MB/s ± 2% 310MB/s ± 4% ~ (p=0.447 n=10+9) Change-Id: Iee0e88f4405d4da1feacddaf24835e86d8ddeff7 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/173278 Reviewed-by: Brad Fitzpatrick <[email protected]> Run-TryBot: Brad Fitzpatrick <[email protected]> TryBot-Result: Gobot Gobot <[email protected]>
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