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Russ Cox 7f516a31b0 math/big: replace assembly with mini-compiler output 
Step 4 of the mini-compiler: switch to the new generated assembly.
No systematic performance regressions, and many many improvements.

In the benchmarks, the systems are:

	c3h88     GOARCH=amd64     c3h88 perf gomote (newer Intel, Google Cloud)
	c2s16     GOARCH=amd64     c2s16 perf gomote (Intel, Google Cloud)
	s7        GOARCH=amd64     rsc basement server (AMD Ryzen 9 7950X)
	386       GOARCH=386       gotip-linux-386 gomote (Intel, Google Cloud)
	s7-386    GOARCH=386       rsc basement server (AMD Ryzen 9 7950X)
	c4as16    GOARCH=arm64     c4as16 perf gomote (Google Cloud)
	mac       GOARCH=arm64     Apple M3 Pro in MacBook Pro
	arm       GOARCH=arm       gotip-linux-arm gomote
	loong64   GOARCH=loong64   gotip-linux-loong64 gomote
	ppc64le   GOARCH=ppc64le   gotip-linux-ppc64le gomote
	riscv64   GOARCH=riscv64   gotip-linux-riscv64 gomote
	s390x     GOARCH=s390x     linux-s390x-ibm old gomote

benchmark \ system           c3h88    c2s16       s7      386   s7-386   c4as16      mac      arm  loong64  ppc64le  riscv64    s390x
AddVV/words=1               -4.03%   +5.21%   -4.04%   +4.94%        ~        ~        ~        ~  -19.51%        ~        ~        ~
AddVV/words=10             -10.20%   +0.34%   -3.46%  -11.50%   -7.46%   +7.66%   +5.97%        ~  -17.90%        ~        ~        ~
AddVV/words=16             -10.91%   -6.45%   -8.45%  -21.86%  -17.90%   +2.73%   -1.61%        ~  -22.47%   -3.54%        ~        ~
AddVV/words=100             -3.77%   -4.30%   -3.17%  -47.27%  -45.34%   -0.78%        ~   -8.74%  -27.19%        ~        ~        ~
AddVV/words=1000            -0.08%   -0.71%        ~  -49.21%  -48.07%        ~        ~  -16.80%  -24.74%        ~        ~        ~
AddVV/words=10000                ~        ~        ~  -48.73%  -48.56%   -0.06%        ~  -17.08%        ~        ~   -4.81%        ~
AddVV/words=100000               ~        ~        ~  -47.80%  -48.38%        ~        ~  -15.10%  -25.06%        ~   -5.34%        ~
SubVV/words=1               -0.84%   +3.43%   -3.62%   +1.34%        ~   -0.76%        ~        ~  -18.18%   +5.58%        ~        ~
SubVV/words=10              -9.99%   +0.34%        ~  -11.23%   -8.24%   +7.53%   +6.15%        ~  -17.55%   +2.77%   -2.08%        ~
SubVV/words=16             -11.94%   -6.45%   -6.81%  -21.82%  -18.11%   +1.58%   -1.21%        ~  -20.36%        ~        ~        ~
SubVV/words=100             -3.38%   -4.32%   -1.80%  -46.14%  -46.43%   +0.41%        ~   -7.20%  -26.17%        ~   -0.42%        ~
SubVV/words=1000            -0.38%   -0.80%        ~  -49.22%  -48.90%        ~        ~  -15.86%  -24.73%        ~        ~        ~
SubVV/words=10000                ~        ~        ~  -49.57%  -49.64%   -0.03%        ~  -15.85%  -26.52%        ~   -5.05%        ~
SubVV/words=100000               ~        ~        ~  -46.88%  -49.66%        ~        ~  -15.45%  -16.11%        ~   -4.99%        ~
LshVU/words=1                    ~   +5.78%        ~        ~   -2.48%   +1.61%   +2.18%   +2.70%  -18.16%  -34.16%  -21.29%        ~
LshVU/words=10             -18.34%   -3.78%   +2.21%        ~        ~   -2.81%  -12.54%        ~  -25.02%  -24.78%  -38.11%  -66.98%
LshVU/words=16             -23.15%   +1.03%   +7.74%   +0.73%        ~   +8.88%   +1.56%        ~  -25.37%  -28.46%  -41.27%        ~
LshVU/words=100            -32.85%   -8.86%   -2.58%        ~   +2.69%   +1.24%        ~  -20.63%  -44.14%  -42.68%  -53.09%        ~
LshVU/words=1000           -37.30%   -0.20%   +5.67%        ~        ~   +1.44%        ~  -27.83%  -45.01%  -37.07%  -57.02%  -46.57%
LshVU/words=10000          -36.84%   -2.30%   +3.82%        ~   +1.86%   +1.57%  -66.81%  -28.00%  -13.15%  -35.40%  -41.97%        ~
LshVU/words=100000         -40.30%        ~   +3.96%        ~        ~        ~        ~  -24.91%  -19.06%  -36.14%  -40.99%  -66.03%
RshVU/words=1               -3.17%   +4.76%   -4.06%   +4.31%   +4.55%        ~        ~        ~  -20.61%        ~  -26.20%  -51.33%
RshVU/words=10             -22.08%   -4.41%  -17.99%   +3.64%  -11.87%        ~  -16.30%        ~  -30.01%        ~  -40.37%  -63.05%
RshVU/words=16             -26.03%   -8.50%  -18.09%        ~  -17.52%   +6.50%        ~   -2.85%  -30.24%        ~  -42.93%  -63.13%
RshVU/words=100            -20.87%  -28.83%  -29.45%        ~  -26.25%   +1.46%   -1.14%  -16.20%  -45.65%  -16.20%  -53.66%  -77.27%
RshVU/words=1000           -24.03%  -21.37%  -26.71%        ~  -28.95%   +0.98%        ~  -18.82%  -45.21%  -23.55%  -57.09%  -71.18%
RshVU/words=10000          -24.56%  -22.44%  -27.01%        ~  -28.88%   +0.78%   -5.35%  -17.47%  -16.87%  -20.67%  -41.97%        ~
RshVU/words=100000         -23.36%  -15.65%  -27.54%        ~  -29.26%   +1.73%   -6.67%  -13.68%  -21.40%  -23.02%  -40.37%  -66.31%
MulAddVWW/words=1           +2.37%   +8.14%        ~   +4.10%   +3.71%        ~        ~        ~  -21.62%        ~   +1.12%        ~
MulAddVWW/words=10               ~   -2.72%  -15.15%   +8.04%        ~        ~        ~   -2.52%  -19.48%        ~   -6.18%        ~
MulAddVWW/words=16               ~   +1.49%        ~   +4.49%   +6.58%   -8.70%   -7.16%  -12.08%  -21.43%   -6.59%   -9.05%        ~
MulAddVWW/words=100         +0.37%   +1.11%   -4.51%  -13.59%        ~  -11.10%   -3.63%  -21.40%  -22.27%   -2.92%  -14.41%        ~
MulAddVWW/words=1000             ~   +0.90%   -7.13%  -18.94%        ~  -14.02%   -9.97%  -28.31%  -18.72%   -2.32%  -15.80%        ~
MulAddVWW/words=10000            ~   +1.08%   -6.75%  -19.10%        ~  -14.61%   -9.04%  -28.48%  -14.29%   -2.25%   -9.40%        ~
MulAddVWW/words=100000           ~        ~   -6.93%  -18.09%        ~  -14.33%   -9.66%  -28.92%  -16.63%   -2.43%   -8.23%        ~
AddMulVVWW/words=1          +2.30%   +4.83%  -11.37%   +4.58%        ~   -3.14%        ~        ~  -10.58%  +30.35%        ~        ~
AddMulVVWW/words=10         -3.27%        ~   +8.96%   +5.74%        ~   +2.67%   -1.44%   -7.64%  -13.41%        ~        ~        ~
AddMulVVWW/words=16         -6.12%        ~        ~        ~   +1.91%   -7.90%  -16.22%  -14.07%  -14.26%   -4.15%   -7.30%        ~
AddMulVVWW/words=100        -5.48%   -2.14%        ~   -9.40%   +9.98%   -1.43%  -12.35%  -18.56%  -21.94%        ~   -9.84%        ~
AddMulVVWW/words=1000      -11.35%   -3.40%   -3.64%  -11.04%  +12.82%   -1.33%  -15.63%  -20.50%  -20.95%        ~  -11.06%  -51.97%
AddMulVVWW/words=10000     -10.31%   -1.61%   -8.41%  -12.15%  +13.10%   -1.03%  -16.34%  -22.46%   -1.00%        ~  -10.33%  -49.80%
AddMulVVWW/words=100000    -13.71%        ~   -8.31%  -12.18%  +12.98%   -1.35%  -15.20%  -21.89%        ~        ~   -9.38%  -48.30%

Change-Id: I0a33c33602c0d053c84d9946e662500cfa048e2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/664938
Reviewed-by: Alan Donovan <adonovan@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-04-19 08:19:23 -07:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api unicode: add CategoryAliases, Cn, LC 2025-04-18 14:13:31 -07:00
doc regexp/syntax: recognize category aliases like \p{Letter} 2025-04-18 14:13:38 -07:00
lib lib/time: build with Ubuntu backward compatibility options 2025-02-06 17:10:15 -08:00
misc misc/linkcheck: remove unused tool 2025-03-20 04:38:55 -07:00
src math/big: replace assembly with mini-compiler output 2025-04-19 08:19:23 -07:00
test cmd/compile: set unalignedOK to make memcombine work properly on loong64 2025-04-09 09:18:20 -07:00
.gitattributes all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
.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 LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS LICENSE: separate, change PATENTS text 2010-12-06 16:31:59 -05:00
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.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attribution 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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Official binary distributions are available at https://go.dev/dl/.

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.