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The Go programming language

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eric fang c6d9b38dd8 cmd/internal/obj/arm64: optimize function prologue/epilogue with STP/LDP In function prologue and epilogue, we save and restore FP and LR registers, and adjust RSP. The current instruction sequence is as follow. For frame size <= 240B, prologue: MOVD.W R30, -offset(RSP) MOVD R29, -8(RSP) epilogue: MOVD -8(RSP), R29 MOVD.P offset(RSP), R30 For frame size > 240B, prologue: SUB $offset, RSP, R27 MOVD R30, (R27) MOVD R27, RSP MOVD R29, -8(RSP) epilogue: MOVD -8(RSP), R29 MOVD (RSP), R30 ADD $offset, RSP Each sequence uses two load or store instructions, actually we can load or store two registers with one LDP or STP instruction. This CL changes the sequences as follow. For frame size <= 496B, prologue: STP (R29, R30), -(offset+8)(RSP) SUB $offset, RSP, RSP epilogue: LDP -8(RSP), (R29, R30) ADD $offset, RSP, RSP For frame size > 496B, prologue: SUB $offset, RSP, R20 STP (R29, R30), -8(R20) MOVD R20, RSP epilogue: LDP -8(RSP), (R29, R30) ADD $offset, RSP, RSP Change-Id: Ia58af85fc81cce9b7c393dc38df43bffb203baad Reviewed-on: https://go-review.googlesource.com/c/go/+/379075 Reviewed-by: Cherry Mui <cherryyz@google.com> Trust: Eric Fang <eric.fang@arm.com> Run-TryBot: Eric Fang <eric.fang@arm.com>		2022-03-09 06:51:37 +00:00
.github	.github: remove duplicate security link	2022-01-07 17:55:09 +00:00
api	api: update next.txt for binary.AppendByteOrder interface	2022-03-03 17:04:24 +00:00
doc	spec: document that type inference doesn't apply to generic types	2022-03-08 02:22:37 +00:00
lib/time	lib/time, time/tzdata: update to 2021e	2021-11-11 05:16:39 +00:00
misc	all: fix typos	2022-02-28 21:52:59 +00:00
src	cmd/internal/obj/arm64: optimize function prologue/epilogue with STP/LDP	2022-03-09 06:51:37 +00:00
test	cmd/compile/internal/types2: more consistently print "check go.mod" if language version < 1.18	2022-03-08 16:50:57 +00:00
.gitattributes	all: treat all files as binary, but check in .bat with CRLF	2020-06-08 15:31:43 +00:00
.gitignore	internal/buildcfg: move build configuration out of cmd/internal/objabi	2021-04-16 19:20:53 +00:00
AUTHORS	A+C: add Bharath Kumar Uppala (individual CLA)	2021-11-29 00:57:09 +00:00
codereview.cfg	codereview.cfg: add codereview.cfg for master branch	2021-02-19 18:44:53 +00:00
CONTRIBUTING.md	all: restore changes from faulty merge/revert	2018-02-12 20:13:59 +00:00
CONTRIBUTORS	CONTRIBUTORS: update for the Go 1.18 release	2022-02-28 15:43:07 +00:00
LICENSE
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README.md	README.md: update contribute URL	2021-09-30 13:33:21 +00:00
SECURITY.md	SECURITY.md: update go versions	2019-09-26 15:34:57 +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 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.

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After downloading a binary release, visit https://golang.org/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://golang.org/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://golang.org/doc/contribute.

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