4f7af5d192
Use Loong64's atomic operation instruction AMADDDB{W,V} (full barrier)
to implement atomic.Xadd{32,64}
goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A5000 @ 2500.00MHz
| bench.old | bench.new |
| sec/op | sec/op vs base |
Xadd 27.24n ± 0% 12.01n ± 0% -55.91% (p=0.000 n=20)
Xadd-2 31.93n ± 0% 25.55n ± 0% -19.98% (p=0.000 n=20)
Xadd-4 31.90n ± 0% 24.80n ± 0% -22.26% (p=0.000 n=20)
Xadd64 27.23n ± 0% 12.01n ± 0% -55.89% (p=0.000 n=20)
Xadd64-2 31.93n ± 0% 25.57n ± 0% -19.90% (p=0.000 n=20)
Xadd64-4 31.89n ± 0% 24.80n ± 0% -22.23% (p=0.000 n=20)
geomean 30.27n 19.67n -35.01%
goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A6000 @ 2500.00MHz
| bench.old | bench.new |
| sec/op | sec/op vs base |
Xadd 26.02n ± 0% 12.41n ± 0% -52.31% (p=0.000 n=20)
Xadd-2 37.36n ± 0% 20.60n ± 0% -44.86% (p=0.000 n=20)
Xadd-4 37.22n ± 0% 19.59n ± 0% -47.37% (p=0.000 n=20)
Xadd64 26.42n ± 0% 12.41n ± 0% -53.03% (p=0.000 n=20)
Xadd64-2 37.77n ± 0% 20.60n ± 0% -45.46% (p=0.000 n=20)
Xadd64-4 37.78n ± 0% 19.59n ± 0% -48.15% (p=0.000 n=20)
geomean 33.30n 17.11n -48.62%
Change-Id: I982539c2aa04680e9dd11b099ba8d5f215bf9b32
Reviewed-on: https://go-review.googlesource.com/c/go/+/481937
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
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| .github | ||
| api | ||
| doc | ||
| lib | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| codereview.cfg | ||
| CONTRIBUTING.md | ||
| go.env | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| SECURITY.md | ||
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