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linux/mips64le
name old time/op new time/op delta
Reverse 2.31ns ± 1% 2.27ns ± 1% -1.53% (p=0.001 n=10+10)
Reverse8 0.65ns ± 1% 0.65ns ± 1% -1.19% (p=0.000 n=9+10)
Reverse16 1.15ns ± 2% 1.14ns ± 2% ~ (p=0.062 n=9+10)
Reverse32 1.96ns ± 1% 1.94ns ± 1% -1.16% (p=0.000 n=10+9)
Reverse64 2.29ns ± 1% 2.26ns ± 0% -0.94% (p=0.000 n=9+9)
ReverseBytes 0.66ns ± 3% 0.65ns ± 1% -1.58% (p=0.006 n=9+10)
ReverseBytes16 0.66ns ± 2% 0.65ns ± 1% -2.05% (p=0.000 n=10+9)
ReverseBytes32 0.41ns ± 1% 0.40ns ± 0% -1.68% (p=0.000 n=10+10)
ReverseBytes64 0.66ns ± 1% 0.65ns ± 1% -1.50% (p=0.000 n=10+9)
cpu=1 benchtime=100ms count=100
name old time/op new time/op delta
Reverse 28.0ns ± 3% 27.7ns ± 3% -0.80% (p=0.000 n=100+98)
Reverse8 2.24ns ± 1% 2.24ns ± 1% ~ (p=0.142 n=98+100)
Reverse16 4.07ns ± 3% 4.05ns ± 3% -0.66% (p=0.000 n=99+99)
Reverse32 11.3ns ± 0% 11.3ns ± 0% ~ (p=0.283 n=94+97)
Reverse64 12.6ns ± 0% 12.6ns ± 0% +0.60% (p=0.000 n=100+98)
ReverseBytes 5.25ns ± 1% 5.24ns ± 1% -0.18% (p=0.000 n=100+100)
ReverseBytes16 2.00ns ± 0% 2.21ns ± 3% +10.07% (p=0.000 n=88+100)
ReverseBytes32 4.08ns ± 2% 4.13ns ± 2% +1.39% (p=0.000 n=99+99)
ReverseBytes64 5.48ns ± 1% 5.45ns ± 1% -0.50% (p=0.000 n=98+99)
Update #43403
Change-Id: I7e7e00bb17608739d9f6b927c6dfef2580493a0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/280645
Trust: Meng Zhuo <mzh@golangcn.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
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Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).
Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild
Change-Id: Ia0534360e4957e58cd9a18429c39d0e32a6addb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/294430
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)
Update the Go tree to use the preferred names.
As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.
ReadDir changes are in a separate CL, because they are not a
simple search and replace.
For #42026.
Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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benchmark old ns/op new ns/op delta
BenchmarkLeadingZeros-8 8.43 3.10 -63.23%
BenchmarkLeadingZeros8-8 8.13 1.33 -83.64%
BenchmarkLeadingZeros16-8 7.34 2.07 -71.80%
BenchmarkLeadingZeros32-8 7.99 2.87 -64.08%
BenchmarkLeadingZeros64-8 8.13 2.96 -63.59%
Measured on 2.3 GHz Intel Core i7 running macOS 10.12.3.
Change-Id: Id343531b408d42ac45f10c76f60e85bdb977f91e
Reviewed-on: https://go-review.googlesource.com/37582
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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For sizes > 8, the existing code is faster.
benchmark old ns/op new ns/op delta
BenchmarkTrailingZeros8-8 1.95 1.29 -33.85%
Measured on 2.3 GHz Intel Core i7 running macOS 10.12.3.
Change-Id: I6f3a33ec633a2c544ec29693c141f2f99335c745
Reviewed-on: https://go-review.googlesource.com/37581
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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For uint64, the existing algorithm is faster.
benchmark old ns/op new ns/op delta
BenchmarkOnesCount8-8 1.95 0.97 -50.26%
BenchmarkOnesCount16-8 2.54 1.39 -45.28%
BenchmarkOnesCount32-8 2.61 1.96 -24.90%
Measured on 2.3 GHz Intel Core i7 running macOS 10.12.3.
Change-Id: I6cc42882fef3d24694720464039161e339a9ae99
Reviewed-on: https://go-review.googlesource.com/37580
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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Measured on 2.3 GHz Intel Core i7, running macOS 10.12.3:
benchmark old ns/op new ns/op delta
BenchmarkReverse8-8 1.70 0.99 -41.76%
BenchmarkReverse16-8 2.24 1.32 -41.07%
Fixes #19279.
Change-Id: I398cf8a3513b7fa63c130efc7846a7c5353999d4
Reviewed-on: https://go-review.googlesource.com/37459
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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