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Guoqi Chen 3214129a83 cmd/compiler,internal/runtime/atomic: optimize Load{64,32,8} on loong64 
The LoadAcquire barrier on Loong64 is "dbar 0x14", using the correct
barrier in Load{8,32,64} implementation can improve performance.

goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A6000-HV @ 2500.00MHz
                |  bench.old   | bench.new                           |
                |  sec/op      |  sec/op        vs base              |
AtomicLoad64      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad64-2    17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad64-4    17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad        17.220n ± 0%   4.402n ± 0%   -74.44% (p=0.000 n=20)
AtomicLoad-2      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad-4      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8       17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8-2     17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8-4     17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
geomean           17.21n         4.402n        -74.42%

goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A5000 @ 2500.00MHz
                |  bench.old   | bench.new                           |
                |  sec/op      |  sec/op        vs base              |
AtomicLoad64      18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad64-2    18.81n ± 0%    10.41n ± 0%   -44.66% (p=0.000 n=20)
AtomicLoad64-4    18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad        18.81n ± 0%    10.41n ± 0%   -44.66% (p=0.000 n=20)
AtomicLoad-2      18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad-4      18.81n ± 0%    10.42n ± 0%   -44.63% (p=0.000 n=20)
AtomicLoad8       18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad8-2     18.82n ± 0%    10.41n ± 0%   -44.70% (p=0.000 n=20)
AtomicLoad8-4     18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
geomean           18.82n         10.41n        -44.68%

Change-Id: I9d47c9d6f359c4f2e41035ca656429aade2e7847
Reviewed-on: https://go-review.googlesource.com/c/go/+/581357
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 02:17:13 +00:00
.github .github/ISSUE_TEMPLATE/03-gopls.yml: use textarea for gopls version 2024-05-24 17:09:04 +00:00
api go/types: add go1.23 iterator methods for 10 exported types 2024-07-31 22:54:09 +00:00
doc go/types: add go1.23 iterator methods for 10 exported types 2024-07-31 22:54:09 +00:00
lib/time lib/time: use consistent directory in mkzip usage message 2024-03-04 17:32:07 +00:00
misc misc/ios: rework exec wrapper to only support simulator 2024-06-18 16:32:49 +00:00
src cmd/compiler,internal/runtime/atomic: optimize Load{64,32,8} on loong64 2024-08-01 02:17:13 +00:00
test cmd/compile: add "deadlocals" pass to remove unused locals 2024-07-30 15:46:27 +00:00
.gitattributes
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00
LICENSE
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README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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