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60700 Commits

Author SHA1 Message Date
Zxilly
bcec5f1540 syscall,misc/wasm: fix path expansion on non-unix platforms
When running a go binary compiled to wasm using node.js on a Windows platform,
the absolute path passed in is also incorrectly forced to expand.

For example:

E:\Project\CS_Project\gsv\testdata\result.gob.gz

will results to

open C:\Users\zxilly\AppData\Local\wasm-exec\go1.23rc1\E:\Project\CS_Project\gsv\testdata\result.gob.gz: No such file or directory

C:\Users\zxilly\AppData\Local\wasm-exec\go1.23rc1 is the place of
wasm_exec_node.js

Fixes: #68820

Change-Id: Ic30c6242302f8915ac1b8ea9f24546935cbb791e
GitHub-Last-Rev: f35ff1a2ee
GitHub-Pull-Request: golang/go#68255
Reviewed-on: https://go-review.googlesource.com/c/go/+/595797
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
2024-08-09 21:22:25 +00:00
Rhys Hiltner
c8ccbcdde5 runtime: add direct benchmark of mutex contention
Measure throughput of a single mutex with all threads contending. Do not
attempt to measure fairness/starvation.

The ChanContended benchmark works somewhat well for this (interacting
with the mutex is a large contributor to its results), but it's better
to be clear about what we're attempting to measure.

For #68578

Change-Id: Ie397b4c363bfcd5afddf796a81cd6c34ebf8551b
Reviewed-on: https://go-review.googlesource.com/c/go/+/604375
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Rhys Hiltner <rhys.hiltner@gmail.com>
2024-08-09 21:17:37 +00:00
cuishuang
820d445876 runtime: make function comments match function names
Change-Id: I5dc9864fbb6f1745be0f7076ac72debd039c8f3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/604178
Reviewed-by: shuang cui <imcusg@gmail.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2024-08-09 21:16:04 +00:00
Keith Randall
3de175f383 cmd/compile: in prove pass, check for unsat before adding local facts
Local facts can get us to unsatisfiable because there is an
unconditional panic in the block. That shouldn't declare the whole
block as unreachable, because we do still need to enter it to get
that panic.

Fixes #68816

Change-Id: I9220edb46089690702d2eb61d112815c7ac91f16
Reviewed-on: https://go-review.googlesource.com/c/go/+/604118
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
2024-08-09 20:53:07 +00:00
Keith Randall
f259e4c916 cmd/compile: fix off-by-one error in prove pass
I think I introduced #68809 when rewriting the prove pass, by
introducing an off-by-one error here:
https://go-review.googlesource.com/c/go/+/599096/5/src/cmd/compile/internal/ssa/prove.go
lines 872-874.
The min++ is already handled in one of the two following cases with
the (r&eq==0) condition. Move the min++ to just the other case.

Fixes #68809

Change-Id: Iffae99e29219c94aaf584cd7ae247289fa604a00
Reviewed-on: https://go-review.googlesource.com/c/go/+/604100
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-09 20:14:40 +00:00
Cherry Mui
1cf6e31f0d cmd/compile: add basic wasmexport support
This CL adds a compiler directive go:wasmexport, which applies to
a Go function and makes it an exported function of the Wasm module
being built, so it can be called directly from the host. As
proposed in #65199, parameter and result types are limited to
32-bit and 64-bit integers and floats, and there can be at most
one result.

As the Go and Wasm calling conventions are different, for a
wasmexport function we generate a wrapper function does the ABI
conversion at compile time.

Currently this CL only adds basic support. In particular,
- it only supports executable mode, i.e. the Go wasm module calls
  into the host via wasmimport, which then calls back to Go via
  wasmexport. Library (c-shared) mode is not implemented yet.
- only supports wasip1, not js.
- if the exported function unwinds stacks (goroutine switch, stack
growth, etc.), it probably doesn't work.

TODO: support stack unwinding, c-shared mode, js.

For #65199.

Change-Id: Id1777c2d44f7d51942c1caed3173c0a82f120cc4
Reviewed-on: https://go-review.googlesource.com/c/go/+/603055
Reviewed-by: Than McIntosh <thanm@golang.org>
Reviewed-by: Randy Reddig <randy.reddig@fastly.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-09 20:07:54 +00:00
Alan Donovan
ff2a57ba92 cmd/go/internal/test: add 'tests' vet check to 'go test' suite
(Second attempt at CL 529816 (f1d6050), reverted in
CL 571695 (1304d98) due to broken longtest builder.)

The tests analyser reports structural problems in test
declarations. Presumably most of these would be caught by
go test itself, which compiles and runs (some subset of) the
tests, but Benchmark and Fuzz functions are executed less
frequently and may benefit more from static checks.

A number of tests of "go vet" needed to be updated, either
to avoid mistakes caught by the analyzer, or to suppress
the analyzer when the mistakes were intended.

Also, reflect the change in go test help message.

+ release note

Fixes golang/go#44251

Change-Id: I1c311086815fe55a66cce001eaab9b41e27d1144
Reviewed-on: https://go-review.googlesource.com/c/go/+/603476
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-09 19:57:59 +00:00
Ezra Newman
1443a3ea1e plugin: include a warning about race detector compatability in docs
As described in #24245, the race detector isn't able to find some race conditions in plugins.
This commit adds a warning about this to the plugins documentation.

Updates #24245

Change-Id: I1a5ab9b5e22b6a254efc639c3c03f75b79214d49
GitHub-Last-Rev: a5b4ff4ca0
GitHub-Pull-Request: golang/go#68792
Reviewed-on: https://go-review.googlesource.com/c/go/+/604275
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-09 19:50:41 +00:00
Bobby Powers
f053f4f921 crypto/tls: expose extensions presented by client to GetCertificate
This enables JA3 and JA4 TLS fingerprinting to be implemented from
the GetCertificate callback, similar to what BoringSSL provides with
its SSL_CTX_set_dos_protection_cb hook.

fixes #32936

Change-Id: Idb54ebcb43075582fcef0ac6438727f494543424
Reviewed-on: https://go-review.googlesource.com/c/go/+/471396
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-09 18:45:11 +00:00
Russ Cox
760b722c34 LICENSE: update per Google Legal
Very minor tweaks:
 - Remove (c) pseudosymbol.
 - Remove "All Rights Reserved."
 - Change "Google Inc." (no longer exists) to "Google LLC".

[git-generate]
echo '
,s/\(c\) //
,s/ All rights reserved.//
,s/Google Inc./Google LLC/
w
q
' | sam -d LICENSE

Change-Id: I243c86499bdaf8f8e73d8833e1ed8ccab4083c63
Reviewed-on: https://go-review.googlesource.com/c/go/+/604475
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-08-09 14:54:31 +00:00
Robert Griesemer
38c766ee0f types2: move RangeKeyVal func into compilersupport.go
This function only exists in types2.

Change-Id: If0a8b6aaf496142cefdf088bd5656536f4ed101c
Reviewed-on: https://go-review.googlesource.com/c/go/+/604276
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2024-08-09 14:40:18 +00:00
qmuntal
a01820c733 os/user: speed up Current on Windows
user.Current is slow on Windows sessions connected to an Active
Directory domain. This is because it uses Windows APIs that do RPC
calls to the domain controller, such as TranslateAccountW and
NetUserGetInfo.

This change speeds up user.Current by using the GetUserNameEx API
instead, which is already optimized for retrieving the current user
name in different formats.

These are the improvements I see with the new implementation:

goos: windows
goarch: amd64
pkg: os/user
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
           │   old.txt   │               new.txt                │
           │   sec/op    │    sec/op     vs base                │
Current-12   501.8µ ± 7%   118.6µ ± 11%  -76.36% (p=0.000 n=10)

           │  old.txt   │              new.txt              │
           │    B/op    │    B/op     vs base               │
Current-12   888.0 ± 0%   832.0 ± 0%  -6.31% (p=0.000 n=10)

           │  old.txt   │              new.txt               │
           │ allocs/op  │ allocs/op   vs base                │
Current-12   15.00 ± 0%   11.00 ± 0%  -26.67% (p=0.000 n=10)

Updates #5298
Fixes #21867
Fixes #68312

Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest
Change-Id: I893c5fcca6969050d73a20ed34770846becd5f5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/597255
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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2024-08-09 05:00:11 +00:00
limeidan
1d925fcc7e cmd/link: add support for trampoline insertation on loong64
Change-Id: I58c861d8403a77c1f3b55207d46076ba76eb1d45
Reviewed-on: https://go-review.googlesource.com/c/go/+/540755
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
2024-08-09 00:43:42 +00:00
Kir Kolyshkin
84266e1469 os: fix Chtimes test flakes
It appears that some builders (notably, linux-arm) have some additional
security software installed, which apparently reads the files created by
tests. As a result, test file atime is changed, making the test fail
like these:

=== RUN   TestChtimesOmit
    ...
    os_test.go:1475: atime mismatch, got: "2024-07-30 18:42:03.450932494 +0000 UTC", want: "2024-07-30 18:42:02.450932494 +0000 UTC"

=== RUN   TestChtimes
    ...
    os_test.go:1539: AccessTime didn't go backwards; was=2024-07-31 20:45:53.390326147 +0000 UTC, after=2024-07-31 20:45:53.394326118 +0000 UTC

According to inode(7), atime is changed when more than 0 bytes are read
from the file. So, one possible solution to these flakes is to make the
test files empty, so no one can read more than 0 bytes from them.

Fixes #68687
Fixes #68663

Change-Id: Ib9234567883ef7b16ff8811e3360cd26c2d6bdab
Reviewed-on: https://go-review.googlesource.com/c/go/+/604315
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-08-08 23:35:45 +00:00
Oleksandr Redko
ed31d642cb fmt: remove ineffective else branch in test
Change-Id: I8e47266e8b3fb2f2ae07455b317de58dfcdd8016
Reviewed-on: https://go-review.googlesource.com/c/go/+/603536
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-08 23:21:43 +00:00
qmuntal
fe392d0dff os/user: support calling Current on impersonated threads
The syscall.OpenCurrentProcessToken call in user.Current fails
when called from an impersonated thread, as the process token is
normally in that case.

This change ensures that the current thread is not impersonated
when calling OpenCurrentProcessToken, and then restores the
impersonation state, if any.

Fixes #68647

Change-Id: I3197535dd8355d21029a42f7aa3936d8fb021202
Reviewed-on: https://go-review.googlesource.com/c/go/+/602415
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-08 20:06:37 +00:00
apocelipes
db0b6a85c2 net/url: implement encoding.BinaryAppender for URL
For #62384

Change-Id: I61529efe3a59b13606479b74af6cbff61c9efb6e
GitHub-Last-Rev: f188b91978
GitHub-Pull-Request: golang/go#68763
Reviewed-on: https://go-review.googlesource.com/c/go/+/603815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2024-08-08 19:43:18 +00:00
Mateusz Poliwczak
48a1f6989c hash: mention encoding.BinaryAppender in Hash docs
For #62384

Change-Id: I4eeb83a4708544777815eacd6a5b6d293580c5e5
GitHub-Last-Rev: 6fdb6db481
GitHub-Pull-Request: golang/go#68758
Reviewed-on: https://go-review.googlesource.com/c/go/+/603405
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-08 19:03:03 +00:00
Branden J Brown
de40308ad2 .github: update language change proposal template
The language change proposal review process has been adjusted slightly.
Update the corresponding issue template to reflect the changes.

For #65660.

Change-Id: Ic6d3526ab4a7fa09433914fd0b1525eea3a832a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/603955
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-08 19:02:29 +00:00
Jorropo
9177e12ccc cmd/compile: fix loong64 MINF → FMINF name and friends
CL 580283 left cmd/compile/internal/ssa/_gen/ in a state where `go run *.go` would always fails ! :'(

Change-Id: I0b3aea9b3f6275cb17c552898c5034e15f0107d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/603995
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-07 20:28:11 +00:00
Michael Matloob
5eeba95bad cmd: update golang.org/x/telemetry to 38c23d2
Commands run:
    go get golang.org/x/telemetry@38c23d2
    go mod tidy
    go mod vendor

This also pulls in golang.org/x/sync@v0.8.0 as a module requirement, but
no changes need to be vendored from that module.

Change-Id: I2238388b6dc2a4a29a53e7b8ddea29eb677a97b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/603898
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2024-08-07 19:48:59 +00:00
Michael Matloob
d0e7642a36 cmd: update golang.org/x/mod to v0.20.0
Commands run:
    go get golang.org/x/mod@v0.20.0
    go mod tidy
    go mod vendor

This is being done in preparation for vendoring in the latest commit of
golang.org/x/telemetry.

Change-Id: I67de7c23c4949cde63826c9d791f7b67698491d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/603897
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Matloob <matloob@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2024-08-07 19:46:37 +00:00
Michael Matloob
808edd5006 all: update golang.org/x/sys to v0.23.0
Commands run (in both src and src/cmd):
    go get golang.org/x/sys@v0.23.0
    go mod tidy
    go mod vendor

This is in preparation for vendoring an updated x/telemetry it has a
requirement on x/sys v0.23.0.

Change-Id: If52d077bafa04a3f656a28800c2591a47e434db4
Reviewed-on: https://go-review.googlesource.com/c/go/+/603896
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Michael Matloob <matloob@golang.org>
2024-08-07 19:37:23 +00:00
Andy Pan
5192d41f23 internal/poll,syscall: drop the fallback for accept4 on linux/arm
For #67001

Change-Id: Ic0b91cd393046c53e41908e8dbbe2ab5fb6b8a74
Reviewed-on: https://go-review.googlesource.com/c/go/+/588216
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2024-08-07 17:32:52 +00:00
Andy Pan
80746f7f2d os: employ sendfile(2) for file-to-file copying on Linux when needed
Go utilizes copy_file_range(2) for file-to-file copying only on kernel 5.3+,
but even on 5.3+ this system call can still go wrong for some reason (check
out the comment inside poll.CopyFileRange).

Before Linux 2.6.33, out_fd must refer to a socket, but since Linux 2.6.33
it can be any file. Thus, we can employ sendfile(2) for copy between files
when copy_file_range(2) fails to handle the copy, that way we can still
benefit from the zero-copy technique on kernel <5.3 and wherever
copy_file_range(2) is available but broken.

Change-Id: I3922218c95ad34ee649ccdf3ccfbd1ce692bebcc
Reviewed-on: https://go-review.googlesource.com/c/go/+/603295
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-08-07 17:28:44 +00:00
apocelipes
b696250e5f hash: implement the encoding.BinaryAppender interface
For #62384

Change-Id: Ia6de028741e43449bcf54ba73ec9b0cad4d4e88a
GitHub-Last-Rev: 192f389d46
GitHub-Pull-Request: golang/go#68738
Reviewed-on: https://go-review.googlesource.com/c/go/+/603255
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-07 17:23:15 +00:00
Oleksandr Redko
5a81570bf2 bytes,strings: use a more universal Cyrillic word
The word "брат" (brother) is the same across Slavic languages that
use the Cyrillic script, such as Bulgarian, Macedonian, Russian,
Ukrainian, and others.

Change-Id: I5155e6bb16a02dec5d93a01b79f9570f43f09444
Reviewed-on: https://go-review.googlesource.com/c/go/+/603535
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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2024-08-07 17:22:36 +00:00
khr@golang.org
b97971ea2e cmd/compile: rip out constant handling in poset data structure
The prove pass now tracks possible constant values explicitly, so
the poset data structure no longer has to. This simplifies a bunch of
the special cases in poset.

Change-Id: I0efff65269bc5d53c6d18e4760b0375cfb2ae8b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/599795
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:08:28 +00:00
khr@golang.org
9b4268c3df cmd/compile: simplify prove pass
We don't need noLimit checks in a bunch of places.
Also simplify folding of provable constant results.

At this point in the CL stack, compilebench reports no performance
changes. The only thing of note is that binaries got a bit smaller.

name                      old text-bytes    new text-bytes    delta
HelloSize                       960kB ± 0%        952kB ± 0%  -0.83%  (p=0.000 n=10+10)
CmdGoSize                      12.3MB ± 0%       12.1MB ± 0%  -1.53%  (p=0.000 n=10+10)

Change-Id: Id4be75eec0f8c93f2f3b93a8521ce2278ee2ee2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/599197
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:08:20 +00:00
khr@golang.org
aba16d17c5 cmd/compile: simplify jump table case in prove pass
Change-Id: I01e0c4953667594b84daaa38082fad1175343861
Reviewed-on: https://go-review.googlesource.com/c/go/+/599196
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:08:11 +00:00
khr@golang.org
f32ec41df5 cmd/compile: reorganize prove pass domain relation table
Move some code from when we learn that we take a branch, to when
we learn that a boolean is true or false. It is more consistent
this way (and may lead to a few more cases where we can derive
useful relations).

Change-Id: Iea7b2d6740e10c9c71c4b1546881f501da81cd21
Reviewed-on: https://go-review.googlesource.com/c/go/+/599098
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
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2024-08-07 16:08:03 +00:00
khr@golang.org
5925cd3d15 cmd/compile: handle boolean and pointer relations
The constant lattice for these types is pretty simple.
We no longer need the old-style facts table, as the ordering
table now has all that information.

Change-Id: If0e118c27a4de8e9bfd727b78942185c2eb50c4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/599097
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:07:55 +00:00
khr@golang.org
a4a130f6d0 cmd/compile: propagate constant ranges through multiplies and shifts
Fixes #40704
Fixes #66826

Change-Id: Ia9c356e29b2ed6f2e3bc6e5eb9304cd4dccb4263
Reviewed-on: https://go-review.googlesource.com/c/go/+/599256
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-07 16:07:42 +00:00
khr@golang.org
3b96eebcbd cmd/compile: rewrite the constant parts of the prove pass
Handles a lot more cases where constant ranges can eliminate
various (mostly bounds failure) paths.

Fixes #66826
Fixes #66692
Fixes #48213
Update #57959

TODO: remove constant logic from poset code, no longer needed.

Change-Id: Id196436fcd8a0c84c7d59c04f93bd92e26a0fd7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/599096
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:07:33 +00:00
khr@golang.org
553443d41f cmd/compile: move limit fact table in prove pass to dense encoding
Here begins a pretty major rewrite of the prove pass. The fundamental
observation is that although keeping facts about relations between
two SSA values could use O(n^2) space, keeping facts about relations
between an SSA value and constants needs only O(n) space. We can just
keep track of min/max for every SSA value at little cost.

Redo the limit table to just keep track of limits for all SSA values.
Use just a slice instead of a map. It may use more space (but still
just O(n) space), but accesses are a lot faster. And with the cache
in the compiler, that space will be reused quickly.

This is part of my planning to add lots more constant limits in the
prove pass.

Change-Id: Ie36819fad5631a8b79c3630fe0e819521796551a
Reviewed-on: https://go-review.googlesource.com/c/go/+/599255
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-07 16:07:21 +00:00
Xiaolin Zhao
e705a2d16e cmd/compile, math: make math.{Abs,Copysign} intrinsics on loong64
goos: linux
goarch: loong64
pkg: math
cpu: Loongson-3A6000 @ 2500.00MHz
         │  old.bench   │              new.bench               │
         │    sec/op    │    sec/op     vs base                │
Copysign   1.9710n ± 0%   0.8006n ± 0%  -59.38% (p=0.000 n=10)
Abs        1.8745n ± 0%   0.8006n ± 0%  -57.29% (p=0.000 n=10)
geomean     1.922n        0.8006n       -58.35%

goos: linux
goarch: loong64
pkg: math
cpu: Loongson-3A5000 @ 2500.00MHz
         │  old.bench   │              new.bench               │
         │    sec/op    │    sec/op     vs base                │
Copysign   2.4020n ± 0%   0.9006n ± 0%  -62.51% (p=0.000 n=10)
Abs        2.4020n ± 0%   0.8005n ± 0%  -66.67% (p=0.000 n=10)
geomean     2.402n        0.8491n       -64.65%

Updates #59120.

Change-Id: Ic409e1f4d15ad15cb3568a5aaa100046e9302842
Reviewed-on: https://go-review.googlesource.com/c/go/+/580280
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-07 01:16:42 +00:00
Xiaolin Zhao
ff14e08cd3 cmd/compile, math: improve implementation of math.{Max,Min} on loong64
Make math.{Min,Max} intrinsics and implement math.{archMax,archMin}
in hardware.

goos: linux
goarch: loong64
pkg: math
cpu: Loongson-3A6000 @ 2500.00MHz
         │  old.bench   │              new.bench              │
         │    sec/op    │   sec/op     vs base                │
Max         7.606n ± 0%   3.087n ± 0%  -59.41% (p=0.000 n=20)
Min         7.205n ± 0%   2.904n ± 0%  -59.69% (p=0.000 n=20)
MinFloat   37.220n ± 0%   4.802n ± 0%  -87.10% (p=0.000 n=20)
MaxFloat   33.620n ± 0%   4.802n ± 0%  -85.72% (p=0.000 n=20)
geomean     16.18n        3.792n       -76.57%

goos: linux
goarch: loong64
pkg: runtime
cpu: Loongson-3A5000 @ 2500.00MHz
         │  old.bench   │              new.bench              │
         │    sec/op    │   sec/op     vs base                │
Max        10.010n ± 0%   7.196n ± 0%  -28.11% (p=0.000 n=20)
Min         8.806n ± 0%   7.155n ± 0%  -18.75% (p=0.000 n=20)
MinFloat   60.010n ± 0%   7.976n ± 0%  -86.71% (p=0.000 n=20)
MaxFloat   56.410n ± 0%   7.980n ± 0%  -85.85% (p=0.000 n=20)
geomean     23.37n        7.566n       -67.63%

Updates #59120.

Change-Id: I6815d20bc304af3cbf5d6ca8fe0ca1c2ddebea2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/580283
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2024-08-07 01:16:28 +00:00
Guoqi Chen
36e5c84ffa runtime: add padding to Linux kernel structures sigcontext on loong64
On linux/loong64, the sc_extcontext member in the sigcontext structure is
required to be 16-byte aligned [1], although sc_extcontext is not currently
used anywhere, it still needs to be padded to the specified alignment.

[1] https://github.com/torvalds/linux/blob/master/arch/loongarch/include/uapi/asm/sigcontext.h

Change-Id: I98d30e921730314835c9469a6f28e186c9808e34
Reviewed-on: https://go-review.googlesource.com/c/go/+/591855
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-08-07 01:13:35 +00:00
Robert Griesemer
5bd442aba3 go/types, types2: avoid spurious "undefined" errors" for invalid identifiers
The syntax parser complains about invalid identifiers.
Don't report a typechecker error when such an identifier
cannot be found in the current scope.

For now add a local test for types2 only because the
go/parser behaves differently than the syntax parser
which leads to slightly different error positions.

Fixes #68183.

Change-Id: Idbfe62fafcd704886069182744ec5e6b37ffc4e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/602476
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-08-06 22:12:59 +00:00
Michael Matloob
44ed517c42 cmd/go/internal/load: make check for path in import error more robust
When producing an ImportPathError from ImportErrorf, we check to see
whether the error string contains the path for the error. The issue is
that we were checking for the exact path string when sometimes the
string is quoted when the error is constructed, and the escaping in the
quote may not match the path string. Check for both the path string, and
the quoted path string.

Fixes #68737

Change-Id: I01bf4e495056e929570bc11bc1f2000ce6d2802b
Reviewed-on: https://go-review.googlesource.com/c/go/+/603475
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Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
2024-08-06 20:20:34 +00:00
Tim King
b62342216d os: remove non-constant format string in t.Errorf call
Fixes #68744

Change-Id: I12db785fc21c18db69d57cf91e2190b4a3df2484
Reviewed-on: https://go-review.googlesource.com/c/go/+/603515
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-06 17:30:36 +00:00
limeidan
abc3d2c119 cmd/internal/objabi, cmd/link/internal: add new relocations used in internal linking
Change-Id: I1b7c258f0ea3b847a92ccd6644b653e11e7a5ef0
Reviewed-on: https://go-review.googlesource.com/c/go/+/555115
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-06 16:06:01 +00:00
Cherry Mui
03e5d83ca7 cmd/internal/obj: minor refactor of wasmimport code
This CL does some minor refactoring of the code handling
wasmimport.
- Put the WasmImport aux reading and writing code together for
  symmetry.
- Define WasmFuncType, embedded in WasmImport. WasmFuncType could
  also be used (later) for wasmexport.
- Move code generation code to a separate function. The containing
  function is already pretty large.
- Simplify linker code a little bit. The loader convention is to
  return the 0 Sym for nonexistent symbol, instead of a separate
  boolean.

No change in generated code. Passes toolstash -cmp
(GOARCH=wasm GOOS=wasip1 go build -toolexec "toolstash -cmp" -a std cmd).

Change-Id: Idc2514f84a08621333841ae4034b81130e0ce411
Reviewed-on: https://go-review.googlesource.com/c/go/+/603135
Reviewed-by: Than McIntosh <thanm@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
2024-08-06 15:56:16 +00:00
aimuz
a7c7ec5995 maps: add examples for All, Keys, Values, Insert, and Collect functions
Change-Id: I4ee61bea9997b822aa1ec2cc3d01b4db5f101e4c
GitHub-Last-Rev: d88282a92e
GitHub-Pull-Request: golang/go#68696
Reviewed-on: https://go-review.googlesource.com/c/go/+/602315
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-08-06 15:52:49 +00:00
Mateusz Poliwczak
0ea534b899 crypto/internal/boring: use internal/byteorder
Change-Id: I882dd4160fb24b1d605af28bca01227716dac717
GitHub-Last-Rev: c631b19068
GitHub-Pull-Request: golang/go#68697
Reviewed-on: https://go-review.googlesource.com/c/go/+/602179
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Zxilly Chou <zxilly@outlook.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2024-08-06 15:51:58 +00:00
Vasily Leonenko
b915399e7e internal/bytealg: optimize Equal for arm64 target
Remove redundant intermediate jump in runtime.memequal
Remove redundant a.ptr==b.ptr check in runtime.memequal_varlen
Add 16-bytes alignment before some labels in runtime.memequal

goos: linux
goarch: arm64
pkg: bytes
                                │ ./master.log │              ./opt.log              │
                                │    sec/op    │    sec/op     vs base               │
Equal/0-4                         0.8342n ± 0%   0.5254n ± 3%  -37.01% (p=0.000 n=8)
Equal/same/1-4                     2.720n ± 0%    2.720n ± 2%        ~ (p=0.779 n=8)
Equal/same/6-4                     2.720n ± 5%    2.720n ± 2%        ~ (p=0.908 n=8)
Equal/same/9-4                     2.722n ± 2%    2.721n ± 2%        ~ (p=0.779 n=8)
Equal/same/15-4                    2.719n ± 0%    2.719n ± 0%        ~ (p=0.641 n=8)
Equal/same/16-4                    2.721n ± 2%    2.719n ± 0%   -0.07% (p=0.014 n=8)
Equal/same/20-4                    2.720n ± 0%    2.721n ± 2%        ~ (p=0.236 n=8)
Equal/same/32-4                    2.720n ± 1%    2.720n ± 0%        ~ (p=0.396 n=8)
Equal/same/4K-4                    2.719n ± 0%    2.720n ± 0%        ~ (p=0.663 n=8)
Equal/same/4M-4                    2.721n ± 0%    2.720n ± 0%        ~ (p=0.075 n=8)
Equal/same/64M-4                   2.720n ± 0%    2.720n ± 2%        ~ (p=0.806 n=8)
Equal/1-4                          6.671n ± 0%    5.449n ± 0%  -18.33% (p=0.000 n=8)
Equal/6-4                          8.761n ± 2%    7.508n ± 0%  -14.30% (p=0.000 n=8)
Equal/9-4                          8.343n ± 0%    7.091n ± 0%  -15.01% (p=0.000 n=8)
Equal/15-4                         8.339n ± 2%    7.090n ± 0%  -14.98% (p=0.000 n=8)
Equal/16-4                         9.173n ± 0%    7.925n ± 2%  -13.61% (p=0.000 n=8)
Equal/20-4                         11.26n ± 0%    10.01n ± 0%  -11.10% (p=0.000 n=8)
Equal/32-4                        10.425n ± 0%    9.176n ± 0%  -11.98% (p=0.000 n=8)
Equal/4K-4                         192.9n ± 0%    192.7n ± 0%   -0.10% (p=0.044 n=8)
Equal/4M-4                         191.3µ ± 0%    191.3µ ± 0%        ~ (p=0.798 n=8)
Equal/64M-4                        3.066m ± 2%    3.065m ± 0%        ~ (p=0.083 n=8)
EqualBothUnaligned/64_0-4          7.506n ± 2%    7.090n ± 2%   -5.55% (p=0.000 n=8)
EqualBothUnaligned/64_1-4          7.850n ± 1%    7.423n ± 0%   -5.43% (p=0.000 n=8)
EqualBothUnaligned/64_4-4          7.505n ± 0%    7.088n ± 0%   -5.56% (p=0.000 n=8)
EqualBothUnaligned/64_7-4          7.840n ± 0%    7.413n ± 0%   -5.44% (p=0.000 n=8)
EqualBothUnaligned/4096_0-4        193.0n ± 4%    190.9n ± 0%   -1.09% (p=0.004 n=8)
EqualBothUnaligned/4096_1-4        223.9n ± 0%    223.1n ± 0%   -0.36% (p=0.000 n=8)
EqualBothUnaligned/4096_4-4        191.9n ± 2%    191.5n ± 0%   -0.21% (p=0.004 n=8)
EqualBothUnaligned/4096_7-4        223.8n ± 0%    223.1n ± 1%        ~ (p=0.098 n=8)
EqualBothUnaligned/4194304_0-4     191.8µ ± 0%    191.8µ ± 0%        ~ (p=0.504 n=8)
EqualBothUnaligned/4194304_1-4     225.4µ ± 2%    225.5µ ± 0%        ~ (p=0.065 n=8)
EqualBothUnaligned/4194304_4-4     192.6µ ± 0%    192.7µ ± 2%   +0.06% (p=0.041 n=8)
EqualBothUnaligned/4194304_7-4     225.4µ ± 0%    225.5µ ± 0%   +0.05% (p=0.050 n=8)
EqualBothUnaligned/67108864_0-4    3.069m ± 0%    3.069m ± 0%        ~ (p=0.314 n=8)
EqualBothUnaligned/67108864_1-4    3.589m ± 0%    3.588m ± 0%        ~ (p=0.959 n=8)
EqualBothUnaligned/67108864_4-4    3.083m ± 0%    3.083m ± 2%        ~ (p=0.505 n=8)
EqualBothUnaligned/67108864_7-4    3.588m ± 0%    3.588m ± 0%        ~ (p=1.000 n=8)
geomean                            199.9n         190.5n        -4.70%

Change-Id: Ib8d0d4006dd39162a600ac98a5f44a0f05136ed3
Reviewed-on: https://go-review.googlesource.com/c/go/+/601135
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
2024-08-06 15:36:27 +00:00
Ian Lance Taylor
1f0c044d60 test: add test that caused gofrontend to crash
Apparently people don't tend to pass untyped constant expressions
to panic.

For #68734

Change-Id: I6fff8137a0f001391de9e61860b67026a9db08c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/603096
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
2024-08-05 19:40:55 +00:00
aimuz
677e080dfe bytes, strings: replace reflect.DeepEqual and custom eq with slices.Equal in tests
Change-Id: I016672af79d49a00ddc2d0449cdaac61e98b4ba0
GitHub-Last-Rev: 38d15d9a03
GitHub-Pull-Request: golang/go#68730
Reviewed-on: https://go-review.googlesource.com/c/go/+/602698
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-08-05 18:44:21 +00:00
khr@golang.org
d465aee0b8 cmd/internal/testdir: fix failure when GOAMD64=v3 is specified in goenv file
Fixes #68548

Add GOENV=off, GOFLAGS= to the build of the stdlib, so that it matches
what runcmd does. This ensures that the runtime and the test are built
with the same flags. As opposed to before this CL, where flags were used
in the stdlib build but not the runcmd build.

(Part of the problem here is that cmd/internal/testdir/testdir_test.go
plays fast and loose with the build cache to make the tests run faster.
Maybe some of that fast-and-loose mechanism can be removed now that we
have a better build cache? I'm not sure.)

Change-Id: I449d4ff517c69311d0aa4411e7fb96c0cca49269
Reviewed-on: https://go-review.googlesource.com/c/go/+/600276
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-05 13:12:12 +00:00
Guoqi Chen
f428c7b729 cmd/internal/obj/loong64: add FLDX,FSTX,LDX.STX instructions support
The LDX.{B,BU,H,HU,W,WU,D},STX.{B,H,W,D}, FLDX.{S,D}, FSTX.{S,D} instruction
on Loong64 implements memory access operations using register offset

Go asm syntax:
	MOV{B,BU,H,HU,W,WU,V}	(RJ)(RK), RD
	MOV{B,H,W,V}		RD, (RJ)(RK)
	MOV{F,D}		(RJ)(RK), FD
	MOV{F,D}		FD, (RJ)(RK)

Equivalent platform assembler syntax:
        ldx.{b,bu,h,hu,w,wu,d}	rd, rj, rk
        stx.{b,h,w,d}		rd, rj, rk
        fldx.{s,d}		fd, rj, rk
        fstx.{s,d}		fd, rj, rk

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

Change-Id: Ic7d13bf45dab8342f034b6469465e6337a087144
Reviewed-on: https://go-review.googlesource.com/c/go/+/588215
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
2024-08-03 05:06:40 +00:00