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57344 Commits

Author SHA1 Message Date
Keith Randall
67983c0f78 cmd/compile: add indexed SET* opcodes for amd64
Update #61356

Change-Id: I391af98563b1c068208784c80ea736c78c29639d
Reviewed-on: https://go-review.googlesource.com/c/go/+/510435
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Martin Möhrmann <martin@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
2023-07-26 17:19:57 +00:00
Keith Randall
505e50b1e3 cmd/compile: get rid of special case in scheduler for entry block
It isn't needed.

Fixes #61356

Change-Id: Ib466a3eac90c3ea57888cf40c294513033fc6118
Reviewed-on: https://go-review.googlesource.com/c/go/+/509856
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
2023-07-26 17:19:14 +00:00
Keith Randall
c94f39a80e cmd/compile: simplify uninterruptable range check for write barriers
Make the load detection a bit clearer and more precise. In particular,
for architectures which have to materialize the address using a
separate instruction, we were using the address materialization
instruction, not the load itself.

Also apply the marking a bit less. We don't need to mark the load itself,
only the instructions after the load. And we don't need to mark the WBend
itself, only the instructions before it.

Change-Id: Ie367a8023b003d5317b752d873bb385f931bb30e
Reviewed-on: https://go-review.googlesource.com/c/go/+/499395
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2023-07-26 17:18:31 +00:00
Keith Randall
d0964e172b cmd/compile: optimize s==s for strings
s==s is always true for strings. This comes up in NaN testing in
generic code, where we want x==x to compile completely away except for
float types.

Fixes #60777

Change-Id: I3ce054b5121354de2f9751b010fb409f148cb637
Reviewed-on: https://go-review.googlesource.com/c/go/+/503795
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
2023-07-26 17:17:28 +00:00
qmuntal
f0894a00f4 os: remove 5ms sleep on Windows in (*Process).Wait
The 5ms sleep in (*Process).Wait was added to mitigate errors while
removing executable files using os.RemoveAll.

Windows 10 1903 implements POSIX semantics for DeleteFile, making the
implementation of os.RemoveAll on Windows much more robust. Older
Windows 10 versions also made internal improvements to avoid errors
when removing files, making it less likely that the 5ms sleep is
necessary.

Windows 10 is the oldest version that Go supports (see #57004), so it
makes sense to unconditionally remove the 5ms sleep now. We have all
the Go 1.22 development cycle to see if this causes any regression.

Fixes #25965

Change-Id: Ie0bbe6dc3e8389fd51a32484d5d20cf59b019451
Reviewed-on: https://go-review.googlesource.com/c/go/+/509335
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-26 15:13:24 +00:00
Johan Brandhorst-Satzkorn
4918490962 misc/wasm: switch default WASI runtime
The default WASI runtime was originally set to Wazero, because it was
the first runtime used to test the Go implementation and because we
could easily find and fix issues in our implementation and theirs.

In CL 498675 we switched the default wasip1 runner to Wasmtime as it
runs faster and is a more established and mature runtime. We should
switch the default runtime to Wasmtime to consistently promote
Wasmtime as the primary tested and approved runtime.

Change-Id: Ic6c064142321af90f015e02b7fe0e71444d8842c
Reviewed-on: https://go-review.googlesource.com/c/go/+/513235
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Eli Bendersky <eliben@google.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2023-07-26 14:30:35 +00:00
Joel Sing
af297c3555 cmd/internal/obj/arm64: factor out splitting of 24 bit unsigned scaled immediates
Rather than duplicating this code, factor it out into a function and
add test coverage.

Change-Id: I37ce568ded4659d98a4ff1361520c5fb2207e947
Reviewed-on: https://go-review.googlesource.com/c/go/+/512537
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-07-26 12:39:29 +00:00
Joel Sing
2a1ba6ebb1 cmd/internal/obj/arm64: simplify buildop
This code stems from the original 7l C code, where one way to determine
the end of a table is to put a sentinel entry, then scan for it. This is
now Go code and the length of an array is readily available.

Remove the sentinel and sentinel scan, then adjust the remaining code to
work accordingly.

Change-Id: I8964c787f5149f3548fa78bf8923aa7a93f9482e
Reviewed-on: https://go-review.googlesource.com/c/go/+/512536
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
2023-07-26 12:38:37 +00:00
chanxuehong
a3c1836d80 encoding/base32: reduce overflow risk when calc encode/decode len
Same as https://go-review.googlesource.com/c/go/+/510635, reduces risk of overflow

Change-Id: I18f5560d73af76c3e853464a89ad7e42dbbd5894
GitHub-Last-Rev: 652c8c6712
GitHub-Pull-Request: golang/go#61547
Reviewed-on: https://go-review.googlesource.com/c/go/+/512200
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-07-26 11:18:30 +00:00
qiulaidongfeng
616193510f os/exec: avoid calling LookPath in cmd.Start for resolved paths
Follow up on CL 511458, see https://go-review.googlesource.com/c/go/+/511458/2..4/src/cmd/go/main.go#b270 .

For #36768.

Change-Id: Icc2a4dbb1219b1d69dd10a900478957b0e975847

Change-Id: Icc2a4dbb1219b1d69dd10a900478957b0e975847
GitHub-Last-Rev: bac7e66496
GitHub-Pull-Request: golang/go#61517
Reviewed-on: https://go-review.googlesource.com/c/go/+/512155
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
2023-07-26 11:13:35 +00:00
Robert Griesemer
7fed33815c spec: update section on type unification for Go 1.21
This leaves the specific unification details out in favor
of a (forthcoming) section in an appendix.

Change-Id: If984c48bdf71c278e1a2759f9a18c51ef58df999
Reviewed-on: https://go-review.googlesource.com/c/go/+/507417
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
2023-07-26 00:02:26 +00:00
Ian Lance Taylor
12bd2445af runtime2: don't check fcntl errno in checkfds on AIX and Solaris
On AIX and Solaris the errno value is fetched using m.mOS.perrno.
When checkfds is called, that value has not yet been set up by minit.
Since the error value doesn't really matter in checkfds,
don't bother to check it on AIX and Solaris.

Fixes #61584

Change-Id: I4e679ee3fdad4f0b833ae102597b2d6b8cb46cb6
Reviewed-on: https://go-review.googlesource.com/c/go/+/513215
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2023-07-25 23:44:31 +00:00
Dmitri Shuralyov
09c886d393 cmd/dist: fix broken link in README
While here, also update the go15bootstrap link to use the
shorter go.dev domain and https:// prefix for consistency.

For #54265.

Change-Id: I881eeda235589511a93bf47186f91f6c47c12932
Reviewed-on: https://go-review.googlesource.com/c/go/+/512720
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-07-25 17:20:22 +00:00
Jes Cok
a6e49b653a cmd/compile/internal/base: add comma in comment for consistency
Change-Id: I9e2ca7eee50f1a642ae2c7468d0a4ea931cbd33e
GitHub-Last-Rev: 93fabec69c
GitHub-Pull-Request: golang/go#61523
Reviewed-on: https://go-review.googlesource.com/c/go/+/512195
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2023-07-25 17:12:33 +00:00
Roland Shoemaker
d4dd1de19f runtime: enforce standard file descriptors open on init on unix
On Unix-like platforms, enforce that the standard file descriptions (0,
1, 2) are always open during initialization. If any of the FDs are
closed, we open them pointing at /dev/null, or fail.

Fixes #60641

Change-Id: Iaab6b3f3e5ca44006ae3ba3544d47da9a613f58f
Reviewed-on: https://go-review.googlesource.com/c/go/+/509020
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Roland Shoemaker <roland@golang.org>
Auto-Submit: Roland Shoemaker <roland@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-25 16:33:33 +00:00
Ian Lance Taylor
862fa6d099 sort: add gen_sort_variants support for x/exp/slices
Also add a go:generate command to the standard library slices package.

For #61374

Change-Id: I7aae8e451b7c6c4390e0344257478d1a96a14189
Reviewed-on: https://go-review.googlesource.com/c/go/+/511660
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Eli Bendersky <eliben@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-07-25 01:33:04 +00:00
Bryan C. Mills
6f597a8a93 os: mark the share created by TestNetworkSymbolicLink as temporary
Also use a unique share name for each run of the test.

This may help with #61467, but since I couldn't reproduce the failure
in the first place I don't know. It passes locally for me.

For #61467.

Change-Id: Ie51e3cf381063e02e4849af5c1a1ed7441ce21c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/512075
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-07-25 00:57:39 +00:00
Jabar Asadi
a3a9b1049e os: ReadFile: don't check for re-allocation in the first iteration
At the beginning of the for-loop iteration cap(data) > len(data) always.
Therefore, in the first iteration, this check becomes unnecessary.
we can move this check to after the read operation.

Change-Id: I205e4a842ced74f31124b45a39b70523b56ad840
GitHub-Last-Rev: 2fdf25dff2
GitHub-Pull-Request: golang/go#60473
Reviewed-on: https://go-review.googlesource.com/c/go/+/498915
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2023-07-25 00:48:06 +00:00
Damien Neil
df0a129789 Revert "net/http: use Copy in ServeContent if CopyN not needed"
This reverts CL 446276.

Reason for revert: Causing surprising performance regression.

Fixes #61530

Change-Id: Ic970f2e05d875b606ce274ea621f7e4c8c337481
Reviewed-on: https://go-review.googlesource.com/c/go/+/512615
Run-TryBot: Damien Neil <dneil@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-24 20:40:06 +00:00
Michael Matloob
89a457844f cmd/go: add support for vendoring in workspace mode
In most cases this change removes assumptions that there is a single
main module in vendor mode and iterates over the workspace modules
when doing checks. The go mod vendor command will now, if in workspace
mode, create a vendor directory in the same directory as the go.work
file, containing the packages (and modules in modules.txt) loaded from
the workspace. When reassembling the module graph from the vendor
directory, an edges are added from each of the main modules to their
requirements, plus additionally to a fake 'vendor/modules.txt' module
with edges to all the modules listed in vendor/modules.txt.

For #60056

Change-Id: I4a485bb39836e7ab35cdc7726229191c6599903e
Reviewed-on: https://go-review.googlesource.com/c/go/+/495801
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
2023-07-24 18:09:22 +00:00
Russ Cox
7141d1e6d8 make.bash,bat,rc: use Go 1.20.6 instead of Go 1.17.13
This was missed in the update of the bootstrap toolchain
and should help people who don't set GOROOT_BOOTSTRAP
and instead assume these scripts will find the right one.

For #54265.

Change-Id: I37a0d0976006d13b73df00013780be5abf202e91
Reviewed-on: https://go-review.googlesource.com/c/go/+/512275
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2023-07-24 02:49:20 +00:00
erifan01
b02725a889 cmd/asm: initialize assembler before running error tests
The Test{ARCH}Errors tests will call ctxt.Arch.Assemble, but this
function requires the assembler has been initialized. So this CL adds
a call to architecture.Init(ctxt) in testErrors, otherwise running
Test{ARCH}Errors alone would fail.

Change-Id: I4f3ba5a5fc1375d28779701989cf700cb4d1b635
Reviewed-on: https://go-review.googlesource.com/c/go/+/505976
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Eric Fang <eric.fang@arm.com>
2023-07-24 01:13:17 +00:00
eric fang
02482a546f cmd/asm: Fix encoding error of register offset shifted by 0 on arm64
The following instruction is wrongly encoded on arm64:
MOVD (R2)(R3<<0), R1
It's incorrectly encoded as
MOVD (R2)(R3<<3), R1

The reason for the error is that we hard-coded the shift encoding to 6,
which is correct for the MOVB and MOVBU instructions because it only
allows a shift amount of 0, but it is wrong for the MOVD instruction
because it also allows other shift values.

For instructions MOVB, MOVBU and FMOVB, the extension amount must be 0,
encoded in "S" as 0 if omitted, or as 1 if present. But in Go, we don't
distinguish between Rn.<EXT> and Rn.<EXT><<0, so we encode it as that
does not present. This makes no difference to the function of the
instruction.

Change-Id: I2afe3498392cc9b2ecd524c7744f28b9d6d107b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/510995
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Eric Fang <eric.fang@arm.com>
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2023-07-24 01:11:41 +00:00
Mauri de Souza Meneguzzo
2eca0b1e16 testing: enforce -skip in example tests
The go test flag -skip had no effect in example tests.

Fixes #61482

Change-Id: I28dfddb88fef3fead2a3c74f9cb63a674a768231
GitHub-Last-Rev: e8c3c3460a
GitHub-Pull-Request: golang/go#61491
Reviewed-on: https://go-review.googlesource.com/c/go/+/511837
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-07-21 21:37:46 +00:00
Keith Randall
e713d6f939 cmd/compile: memcombine if values being stored are from consecutive loads
If we load 2 values and then store those 2 loaded values, we can likely
perform that operation with a single wider load and store.

Fixes #60709

Change-Id: Ifc5f92c2f1b174c6ed82a69070f16cec6853c770
Reviewed-on: https://go-review.googlesource.com/c/go/+/502295
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
2023-07-21 19:06:53 +00:00
Ian Lance Taylor
ffd9bd7e60 runtime: consider core PID in gdb test
Add the PID to the core file name if the current system uses it
when generating core files.

Fixes #61487

Change-Id: I3b53a6c850c754795c8022921160f03c588d4c91
Reviewed-on: https://go-review.googlesource.com/c/go/+/511659
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Michael Pratt <mpratt@google.com>
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2023-07-21 18:42:36 +00:00
Robert Griesemer
3bb51a6805 spec: fix a couple of minor mistakes in type inference section
Change-Id: I9cdb301163b67add39928c8fc7df2b7f3893f45e
Reviewed-on: https://go-review.googlesource.com/c/go/+/511836
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2023-07-21 16:52:52 +00:00
Cherry Mui
15eea6a193 cmd/link: allow enabling DWARF with -s
The -s flag is to documented to disable symbol table, not DWARF
(which is the -w flag). However, due to a bug (#15166), -s was
made to also disable DWARF. That bug can be fixed without
disabling DWARF. So do that, and make it possible to enable DWARF
with -s.

Since -s has been disabling DWARF for quite some time, and users
who use -s may want to suppress all symbol information, as DWARF
also contains symbol information, we keep the current behavior,
having -s continue to disable DWARF by default. But we allow
enabling DWARF by specifying -w=0 (or false).

In summary, this is the behavior now:
-s       no symbol table, no DWARF
-w       has symbol table, no DWARF
-s -w    no symbol table, no DWARF (same as -s)
-s -w=0	 no symbol table, has DWARF

Change-Id: I1883f0aa3618abccfd735d104d983f7f531813d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/492984
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2023-07-21 15:48:57 +00:00
Cherry Mui
f29c4fa55e cmd/link: test the -s flag
Add a test checking the -s flag actually suppresses the symbol
table.

Change-Id: I7216d4811a72c62b823d2daa12f6462568243b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/506759
Reviewed-by: Than McIntosh <thanm@google.com>
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2023-07-21 15:48:45 +00:00
Cherry Mui
5bf8f533f0 cmd/link: print dsymutil and strip commands in -v mode
If -v is specified, print dsymutil and strip commands.

Change-Id: Icaff2b41ab582d8c58a4ec65438c2986d88def9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/506758
Reviewed-by: Than McIntosh <thanm@google.com>
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2023-07-21 15:44:44 +00:00
Cherry Mui
4d21b3ec2d cmd/link: rationalize -s and -w flags with Mach-O external linking
Currently, on Mach-O in external linking mode, the handling of -s
and -w flags are a bit mixed: neither flag disables the symbol
table, and both flags disable DWARF.

This CL makes it do what is documented: -s disables symbol table,
and -w disables DWARF. For the Darwin system linker, the -s flag
(strip symbol table) is obsolete. So we strip it afterwards. We
already use the strip command to strip the debug STAB symbols if
we need to combine DWARF. With this CL we'll use an additional
flag to strip more symbols. And we now also use strip if -s is
specified and we don't need to combine DWARF.

Change-Id: I9bed24fd388f2bd5b0ffa4ec2db46a4a2f6b1016
Reviewed-on: https://go-review.googlesource.com/c/go/+/493136
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-07-21 15:44:11 +00:00
Cherry Mui
1d84c89bec cmd/link: suppress symbol table on Mach-O when -s
Currently, on Mach-O, we don't strip the symbol table even the -s
flag is set. This CL makes it suppress the symbol table, as
documented.

On Mach-O, even with -s, we still need to keep symbols that are
dynamically exported or referenced symbol. Otherwise the dynamic
linker cannot resolve them and the binary doesn't run.
(Interestingly, for a PIE binary it is okay to strip the symbol
table entirely. We keep the dynamic symbols for consistency. And
this is also in consistent with what the system "strip" command
does.)

Change-Id: I39c572553fe0215ae3bdf5349bf2bab7205fbdc9
Reviewed-on: https://go-review.googlesource.com/c/go/+/492744
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
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2023-07-21 15:42:40 +00:00
Cherry Mui
3437ff0d7a cmd/cgo/internal/testshared: skip in short mode and not on builders
We already skip testcarchive, testcshared, and testplugin in short
mode and not on builders. The shared build mode is not more
supported than the c-archive, c-shared, and plugin build modes. No
need to run it everywhere by default.

Updates #61025.

Change-Id: I6a06e04c1a1dc78f0f85456320d128bd67277915
Reviewed-on: https://go-review.googlesource.com/c/go/+/511696
Run-TryBot: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2023-07-21 15:03:06 +00:00
chanxuehong
14adf4fb21 encoding/base64: reduce the overflow risk when computing encode/decode length
Change-Id: I0a55cdc38ae496e2070f0b9ef317a41f82352afd
GitHub-Last-Rev: c19527a26b
GitHub-Pull-Request: golang/go#61407
Reviewed-on: https://go-review.googlesource.com/c/go/+/510635
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2023-07-21 14:44:47 +00:00
zikaeroh
050d4d3b9e log/slog: fix comment above log levels
This extra newline causes pkg.go.dev and gopls to only show the bottom
half of this comment; I'm pretty sure this entire thing is meant to be
in the docs.

Change-Id: I5bbf081fb2072d9d773d5a995bc3693dc44f65ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/511855
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2023-07-21 14:43:18 +00:00
Dmitri Shuralyov
c6b5dce0d1 cmd/dist: apply timeout scale even if timeout isn't overridden
The timeout field is documented as being available so that it's possible
to override timeout by setting a non-zero value. If it's left at zero,
we don't need to override the default go test timeout, but we still need
to apply the timeout scale whenever it's something other than 1.

Fixes (via backport) #61468.

Change-Id: I63634e9b3ef8c4ec7f334b5a6b4bf3cad121355c
Reviewed-on: https://go-review.googlesource.com/c/go/+/511567
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2023-07-21 14:41:57 +00:00
Eli Bendersky
c3da3bcd8e sort: forward fixed-type slice sorting to slices package
Forwards the following functions to the slices package:

    sort.Ints
    sort.Strings
    sort.Float64s
    sort.IntsAreSorted
    sort.StringsAreSorted
    sort.Float64sAreSorted

benchstat results on the sort package's benchmarks:

goos: linux
goarch: amd64
pkg: sort
cpu: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
SearchWrappers-8        58.10n ± 0%   58.43n ± 1%   +0.57% (p=0.004 n=10)
SortString1K-8          76.53µ ± 1%   66.04µ ± 2%  -13.71% (p=0.000 n=10)
SortString1K_Slice-8    71.99µ ± 1%   72.32µ ± 2%        ~ (p=0.481 n=10)
StableString1K-8        92.66µ ± 1%   92.10µ ± 2%   -0.61% (p=0.019 n=10)
SortInt1K-8             34.31µ ± 0%   11.49µ ± 2%  -66.50% (p=0.000 n=10)
SortInt1K_Sorted-8     2699.5n ± 1%   959.0n ± 3%  -64.47% (p=0.000 n=10)
SortInt1K_Reversed-8    3.990µ ± 1%   1.429µ ± 4%  -64.19% (p=0.000 n=10)
SortInt1K_Mod8-8       13.695µ ± 1%   5.129µ ± 2%  -62.55% (p=0.000 n=10)
StableInt1K-8           46.22µ ± 1%   46.80µ ± 1%        ~ (p=0.109 n=10)
StableInt1K_Slice-8     44.12µ ± 1%   44.32µ ± 2%        ~ (p=0.315 n=10)
SortInt64K-8            3.848m ± 0%   1.857m ± 2%  -51.76% (p=0.000 n=10)
SortInt64K_Slice-8      3.690m ± 0%   3.740m ± 0%   +1.36% (p=0.002 n=10)
StableInt64K-8          3.901m ± 0%   3.917m ± 0%   +0.42% (p=0.003 n=10)
Sort1e2-8               32.22µ ± 2%   32.40µ ± 2%        ~ (p=0.529 n=10)
Stable1e2-8             54.11µ ± 1%   54.11µ ± 1%        ~ (p=0.796 n=10)
Sort1e4-8               5.998m ± 1%   5.993m ± 1%        ~ (p=0.579 n=10)
Stable1e4-8             15.23m ± 0%   15.32m ± 0%   +0.59% (p=0.000 n=10)
Sort1e6-8               902.8m ± 0%   904.3m ± 0%        ~ (p=0.075 n=10)
Stable1e6-8              3.089 ± 0%    3.089 ± 0%        ~ (p=0.971 n=10)
geomean                 259.8µ        200.0µ       -22.99%

Most of the benchmarks are unaffected. The ones with significant reductions
are precisely for the functions that were forwarded.

This CL has to move some things around to avoid a circular dependency
between sort and slices. Since sort depends on slices now, nothing in
slices can depend on sort - not even in tests.

Fixes #61180

Change-Id: Ic0e5f519863d96a139fada08aefb1bcdf4c7a9a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/508135
Run-TryBot: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Eli Bendersky <eliben@google.com>
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2023-07-21 13:00:18 +00:00
Rob Findley
12f3d6858e go/types, types2: update documentation for GoVersion
Update the documentation for Config.GoVersion to reflect the changes
made for #61175.

Change-Id: I9f3fbcf8ee88e52d6a5e7cf80dad3d2fb5313893
Reviewed-on: https://go-review.googlesource.com/c/go/+/511096
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2023-07-21 11:41:19 +00:00
Mauri de Souza Meneguzzo
f2d709b769 reflect: panic on recv channel close
It is possible to call reflect.ValueOf(ch).Close() on a recv-only channel,
 while close(ch) is a compile-time error. Following the same reflect
semantics as send and recv this should result in a panic.

Fixes #61445

Change-Id: I2a9ee8f45963593a37bd6df4643dd64fb322f9f9
GitHub-Last-Rev: fe2d5e09f5
GitHub-Pull-Request: golang/go#61453
Reviewed-on: https://go-review.googlesource.com/c/go/+/511295
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2023-07-21 05:39:00 +00:00
Cuong Manh Le
b104a0ef32 runtime/cgo: reduce runtime init done check using atomic
Every call from C to Go does acquire a mutex to check whether Go runtime
has been fully initialized. This often does not matter, because the lock
is held only briefly. However, with code that does a lot of parallel
calls from C to Go could cause heavy contention on the mutex.

Since this is an initialization guard, we can double check with atomic
operation to provide a fast path in case the initialization is done.
With this CL, program in #60961 reduces from ~2.7s to ~1.8s.

Fixes #60961

Change-Id: Iba4cabbee3c9bc646e70ef7eb074212ba63fdc04
Reviewed-on: https://go-review.googlesource.com/c/go/+/505455
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2023-07-21 05:26:00 +00:00
Cuong Manh Le
d1612071d9 cmd/compile/internal/walk: remove un-used func/var
Change-Id: I0ea1340cbca3dfb8b6bd71df439edd410e452fa3
Reviewed-on: https://go-review.googlesource.com/c/go/+/506478
Reviewed-by: Keith Randall <khr@golang.org>
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Reviewed-by: Keith Randall <khr@google.com>
2023-07-21 02:40:28 +00:00
Cuong Manh Le
5c2b43a761 cmd/compile/internal/typecheck: cleanup code
Removing a lot of functions/variables/constants which are un-unsed
anymore in Unified IR frontend.

Change-Id: Iccf73754196bf4fa40fe701a6468f4c8a1a0c655
Reviewed-on: https://go-review.googlesource.com/c/go/+/506477
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2023-07-21 02:40:02 +00:00
Cuong Manh Le
4550055149 cmd/compile: use "pw" as receiver name consistently
Change-Id: I912f1326fa442098065b62b7b0ef9048771e4701
Reviewed-on: https://go-review.googlesource.com/c/go/+/506476
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2023-07-21 02:39:59 +00:00
Cuong Manh Le
1d04c42045 cmd/compile/internal/noder: remove un-used funcs/vars
Change-Id: I755406e6c5b6a8cdaeeed8cd12d756e3847c8d4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/506475
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Reviewed-by: Keith Randall <khr@golang.org>
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2023-07-21 02:39:32 +00:00
Robert Griesemer
8abc6e2597 go/types, types2: a min/max value argument must not be untyped
Fixes #61486.

Change-Id: I5770e238e44b724816894d914b3ea5dc78bc3ced
Reviewed-on: https://go-review.googlesource.com/c/go/+/511835
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2023-07-21 00:34:06 +00:00
Michael Anthony Knyszek
4f4c23512e runtime: fix debug non-concurrent sweep mode after activeSweep changes
Currently the GC creates a sweepLocker before restarting the world at
the end of the mark phase, so that it can safely flush mcaches without
the runtime incorrectly concluding that sweeping is done before that
happens.

However, with GODEBUG=gcstoptheworld=2, where sweeping happens during
that STW phase, creating that sweepLocker will fail, since the runtime
will conclude that sweeping is in fact complete (all the queues will be
drained). The problem however is that gcSweep, which does the
non-concurrent sweeping, doesn't actually flush mcaches.

In essence, this failure to create a sweepLocker is indicating a real
issue: sweeping is marked as complete, but we haven't flush the mcaches
yet!

The fix to this is to flush mcaches in gcSweep when in a non-concurrent
sweep. Now that gcSweep actually completes a full sweep, it's safe to
ignore a failure to create a sweepLocker (and in fact, it *must* fail).

While we're here, let's also remove _ConcurrentSweep, the debug flag.
There's already an alias for it called concurrentSweep, and there's only
one use of it in gcSweep.

Lastly, add a dist test for the GODEBUG=gcstoptheworld=2 mode.

Fixes #53885.

Change-Id: I8a1e5b8f362ed8abd03f76e4950d3211f145ab1f
Reviewed-on: https://go-review.googlesource.com/c/go/+/479517
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2023-07-21 00:28:09 +00:00
Ian Lance Taylor
16ec514712 time: document that AfterFunc Timer's C field is nil
Fixes #60811

Change-Id: Ica947a4789e71826284f9f6e41c298baa3d033e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/503922
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2023-07-20 23:18:18 +00:00
Robert Griesemer
a04a665a92 spec: update section on type inference for Go 1.21
The new section describes type inference as the problem
of solving a set of type equations for bound type parameters.

The next CL will update the section on unification to match
the new inference approach.

Change-Id: I2cb49bfb588ccc82d645343034096a82b7d602e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/503920
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2023-07-20 23:09:32 +00:00
Matthew Dempsky
82ee946d7a all: update build tags to require/assume Go 1.20
Updates #54265.

Change-Id: Ia1c9486484c73c565bb4f78234dedff6d929ed42
Reviewed-on: https://go-review.googlesource.com/c/go/+/511656
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2023-07-20 21:52:09 +00:00
Michael Pratt
9ceba95008 runtime: print debuglog before sighandler crash
Change-Id: I48e8c314258a033fa0dc5e533e2c5bd06c529a7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/501977
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2023-07-20 21:40:01 +00:00