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579902d0b1
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Cuong Manh Le 579902d0b1 cmd/compile,runtime: open code unsafe.Slice 
So prevent heavy runtime call overhead, and the compiler will have a
chance to optimize the bound check.

With this optimization, changing runtime/stack.go to use unsafe.Slice
no longer negatively impacts stack copying performance:

name                   old time/op    new time/op    delta
StackCopyWithStkobj-8    16.3ms ± 6%    16.5ms ± 5%   ~     (p=0.382 n=8+8)

name                   old alloc/op   new alloc/op   delta
StackCopyWithStkobj-8     17.0B ± 0%     17.0B ± 0%   ~     (all equal)

name                   old allocs/op  new allocs/op  delta
StackCopyWithStkobj-8      1.00 ± 0%      1.00 ± 0%   ~     (all equal)

Fixes #48798

Change-Id: I731a9a4abd6dd6846f44eece7f86025b7bb1141b
Reviewed-on: https://go-review.googlesource.com/c/go/+/362934
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2022-05-11 04:25:16 +00:00
.github .github: remove duplicate security link 2022-01-07 17:55:09 +00:00
api io: add an Err field to LimitedReader 2022-05-04 20:06:32 +00:00
doc crypto/tls: remove tls10default GODEBUG flag 2022-04-27 17:20:34 +00:00
lib/time lib/time, time/tzdata: update to 2021e 2021-11-11 05:16:39 +00:00
misc cmd/dist: add asan tests for global objects in testsanitizers package 2022-05-05 04:05:43 +00:00
src cmd/compile,runtime: open code unsafe.Slice 2022-05-11 04:25:16 +00:00
test cmd/compile: lower Add64/Sub64 into ssa on PPC64 2022-05-10 20:03:53 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Jinzhu Zhang 2022-05-08 17:28:26 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
CONTRIBUTORS A+C: add Jinzhu Zhang 2022-05-08 17:28:26 +00:00
LICENSE
PATENTS
README.md README.md: update wiki link 2022-04-26 16:21:18 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +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.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Download and Install

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After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.