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Robert Griesemer authored
Also: Changed Reverse/ReverseBytes implementations to use the same (smaller) masks as OnesCount. BenchmarkOnesCount-8 37.0 6.26 -83.08% BenchmarkOnesCount8-8 7.24 1.99 -72.51% BenchmarkOnesCount16-8 11.3 2.47 -78.14% BenchmarkOnesCount32-8 18.4 3.02 -83.59% BenchmarkOnesCount64-8 40.0 3.78 -90.55% BenchmarkReverse-8 6.69 6.22 -7.03% BenchmarkReverse8-8 1.64 1.64 +0.00% BenchmarkReverse16-8 2.26 2.18 -3.54% BenchmarkReverse32-8 2.88 2.87 -0.35% BenchmarkReverse64-8 5.64 4.34 -23.05% BenchmarkReverseBytes-8 2.48 2.17 -12.50% BenchmarkReverseBytes16-8 0.63 0.95 +50.79% BenchmarkReverseBytes32-8 1.13 1.24 +9.73% BenchmarkReverseBytes64-8 2.50 2.16 -13.60% OnesCount-8 37.0ns ± 0% 6.3ns ± 0% ~ (p=1.000 n=1+1) OnesCount8-8 7.24ns ± 0% 1.99ns ± 0% ~ (p=1.000 n=1+1) OnesCount16-8 11.3ns ± 0% 2.5ns ± 0% ~ (p=1.000 n=1+1) OnesCount32-8 18.4ns ± 0% 3.0ns ± 0% ~ (p=1.000 n=1+1) OnesCount64-8 40.0ns ± 0% 3.8ns ± 0% ~ (p=1.000 n=1+1) Reverse-8 6.69ns ± 0% 6.22ns ± 0% ~ (p=1.000 n=1+1) Reverse8-8 1.64ns ± 0% 1.64ns ± 0% ~ (all samples are equal) Reverse16-8 2.26ns ± 0% 2.18ns ± 0% ~ (p=1.000 n=1+1) Reverse32-8 2.88ns ± 0% 2.87ns ± 0% ~ (p=1.000 n=1+1) Reverse64-8 5.64ns ± 0% 4.34ns ± 0% ~ (p=1.000 n=1+1) ReverseBytes-8 2.48ns ± 0% 2.17ns ± 0% ~ (p=1.000 n=1+1) ReverseBytes16-8 0.63ns ± 0% 0.95ns ± 0% ~ (p=1.000 n=1+1) ReverseBytes32-8 1.13ns ± 0% 1.24ns ± 0% ~ (p=1.000 n=1+1) ReverseBytes64-8 2.50ns ± 0% 2.16ns ± 0% ~ (p=1.000 n=1+1) Change-Id: I591b0ffc83fc3a42828256b6e5030f32c64f9497 Reviewed-on: https://go-review.googlesource.com/37218Reviewed-by:
Matthew Dempsky <mdempsky@google.com>
a12edb8d
