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Commit Graph

45360 Commits

Author SHA1 Message Date
Joel Sing
6f45b39e4d cmd/compile,cmd/internal/obj/riscv: move g register on riscv64
The original riscv64 port used the thread pointer (TP aka X4) register for
the g pointer, however this register is also used when TLS support is
required, resulting in a conflict (for example, when a signal is received
we have no way of readily knowing if X4 contains a pointer to the TCB or
a pointer to a g).

In order to support cgo, free up the X4 register by moving g to X27.
This unfortunately means that the X4 register is unused in non-cgo mode,
however the alternative is to not support cgo on this platform.

Update #36641

Change-Id: Idcaf3e8ccbe42972a1b8943aeefde7149d9c960a
Reviewed-on: https://go-review.googlesource.com/c/go/+/263477
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-10-21 16:40:47 +00:00
Bryan C. Mills
214136b741 cmd/go/internal/fsys: use a root other than "." in Walk tests
Fixes #42115

Change-Id: Icf4c9eac5ed3295acbc8377c7a06f82c6bddc747
Reviewed-on: https://go-review.googlesource.com/c/go/+/264177
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: David du Colombier <0intro@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-10-21 16:19:42 +00:00
Obeyda Djeffal
bcc3333487 cmd/go: ignore GOFLAGS values without name in go env/bug
This happens with 'go env' and 'go bug'.

If GOFLAGS variable is set to something like '=value',
running `go env` panics with this error message:

    goroutine 1 [running]:
    cmd/go/internal/base.SetFromGOFLAGS(0xd96838)
        cmd/go/internal/base/goflags.go:101 +0x9a7
    main.main()
        cmd/go/main.go:188 +0x755

This happens when the 'name' of the flag is not
specified ('=' or '=value'), with any combination of other flags.
Other commands show this error message:
    go: parsing $GOFLAGS: non-flag

This happens only with 'env' and 'bug' because we have this:
https://go.googlesource.com/go/+/refs/heads/master/src/cmd/go/internal/base/goflags.go#40

New behaviour: ignore the bad flag, since we don't want to report
that with `go env` or `go bug`.

Fixes: #42013
Change-Id: I72602840ca00293d2a92ea28451b75b9799e3d6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/263098
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Matloob <matloob@golang.org>
2020-10-21 15:03:58 +00:00
Paul E. Murphy
15ead857db cmd/compiler,cmd/go,sync: add internal {LoadAcq,StoreRel}64 on ppc64
Add an internal atomic intrinsic for load with acquire semantics
(extending LoadAcq to 64b) and add LoadAcquintptr for internal
use within the sync package.  For other arches, this remaps to the
appropriate atomic.Load{,64} intrinsic which should not alter code
generation.

Similarly, add StoreRel{uintptr,64} for consistency, and inline.

Finally, add an exception to allow sync to directly use the
runtime/internal/atomic package which avoids more convoluted
workarounds (contributed by Lynn Boger).

In an extreme example, sync.(*Pool).pin consumes 20% of wall time
during fmt tests.  This is reduced to 5% on ppc64le/power9.

From the fmt benchmarks on ppc64le:

name                           old time/op  new time/op  delta
SprintfPadding                  468ns ± 0%   451ns ± 0%   -3.63%
SprintfEmpty                   73.3ns ± 0%  51.9ns ± 0%  -29.20%
SprintfString                   135ns ± 0%   122ns ± 0%   -9.63%
SprintfTruncateString           232ns ± 0%   214ns ± 0%   -7.76%
SprintfTruncateBytes            216ns ± 0%   202ns ± 0%   -6.48%
SprintfSlowParsingPath          162ns ± 0%   142ns ± 0%  -12.35%
SprintfQuoteString             1.00µs ± 0%  0.99µs ± 0%   -1.39%
SprintfInt                      117ns ± 0%   104ns ± 0%  -11.11%
SprintfIntInt                   190ns ± 0%   175ns ± 0%   -7.89%
SprintfPrefixedInt              232ns ± 0%   212ns ± 0%   -8.62%
SprintfFloat                    270ns ± 0%   255ns ± 0%   -5.56%
SprintfComplex                 1.01µs ± 0%  0.99µs ± 0%   -1.68%
SprintfBoolean                  127ns ± 0%   111ns ± 0%  -12.60%
SprintfHexString                220ns ± 0%   198ns ± 0%  -10.00%
SprintfHexBytes                 261ns ± 0%   252ns ± 0%   -3.45%
SprintfBytes                    600ns ± 0%   590ns ± 0%   -1.67%
SprintfStringer                 684ns ± 0%   658ns ± 0%   -3.80%
SprintfStructure               2.57µs ± 0%  2.57µs ± 0%   -0.12%
ManyArgs                        669ns ± 0%   646ns ± 0%   -3.44%
FprintInt                       140ns ± 0%   136ns ± 0%   -2.86%
FprintfBytes                    184ns ± 0%   181ns ± 0%   -1.63%
FprintIntNoAlloc                140ns ± 0%   136ns ± 0%   -2.86%
ScanInts                        929µs ± 0%   921µs ± 0%   -0.79%
ScanRecursiveInt                122ms ± 0%   121ms ± 0%   -0.11%
ScanRecursiveIntReaderWrapper   122ms ± 0%   122ms ± 0%   -0.18%

Change-Id: I4d66780261b57b06ef600229e475462e7313f0d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/253748
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-10-21 14:34:44 +00:00
Richard Musiol
54c0237346 misc/wasm: improve error message if javascript polyfills are required
wasm_exec.js expects that either "require" is available or that the
globals "crypto", "TextEncoder" and "TextDecoder" are already defined.
Report a better error message if this is not the case, suggesting the
use of a polyfill.

Updates #41482

Change-Id: I5473cae15c98ae42e39f5928245b7762e7a5a8bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/261357
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-10-21 13:19:35 +00:00
Richard Musiol
9848e93cb7 misc/wasm: make sure sp is unsigned
An i32 passed from WebAssembly to JavaScript is always read as a signed
integer. Use the bitshift operator to turn it into an unsigned integer.

Fixes #40923

Change-Id: Ia91ed2145dd2fc3071e2fc22b86ebfcb3c1e9f4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/261358
Trust: Richard Musiol <neelance@gmail.com>
Run-TryBot: Richard Musiol <neelance@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-10-21 09:34:39 +00:00
Tobias Klauser
491fe1b959 cmd/go: enable link syso test on linux/riscv64
Now that external linking is supported on linux/riscv64 (CL 243517),
re-enable the test previously disabled by CL 216259.

Updates #36739

Change-Id: I611548c587ca50f8bfab72c903ab0432e2b54198
Reviewed-on: https://go-review.googlesource.com/c/go/+/263797
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Joel Sing <joel@sing.id.au>
2020-10-21 07:36:08 +00:00
Cuong Manh Le
62f18d07ba doc/go1.16: document net TCP listener's backlog size update
Updates #41470

Change-Id: Iebd3a339504aa7f8834853d6a740557fb3bce3ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/262938
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-21 00:59:25 +00:00
Jay Conrod
cfb087c683 cmd/go: fix TestScript/test_cache_inputs
Small fix for a new failure in CL 263142

For #41190

Change-Id: I733bc1998d87b505b52d429916c45afe2968a709
Reviewed-on: https://go-review.googlesource.com/c/go/+/264057
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-10-21 00:22:37 +00:00
Dan Scales
f121e0eddd cmd/compile: fix nodedump output for types of nodes
The Dbg dumping of complex types was broken, because (I think) of a
recent change to handle recursive types correctly. Before this fix,
the Dump output of a closure node (where the last thing on the line is
the type of the node) was:

.   .   CLOSURE l(8) esc(h) tc(1) FUNC-@0

after this change it is:

.   .   CLOSURE l(8) esc(h) tc(1) FUNC-func(int) int

The problem is that that the 'mode == Fdbg' code was immediately
aborting the descent into tconv2, since it was calling down with the
same node that was just entered into the hash table.

Change-Id: Iee106b967cea1856dd92d4350681401dd34a23b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/264025
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2020-10-20 23:37:53 +00:00
Constantin Konstantinidis
3ca3ca51d7 cmd/compile: enforce strongly typed rules for ARM (to32)
Type casting changed to 32 from 64.
L1055-L1056
L1193-L1194, L1197-L1198

toolstash-check successful.

Change-Id: Icdb9985673292294bc4549afaaa6cf4fcf92ffa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/257640
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
2020-10-20 22:59:31 +00:00
Martin Möhrmann
b7a2d413a3 testing: print cpu type as label for benchmarks
Supports 386 and amd64 architectures on all operating systems.

Example output:
$ go test -bench=.*
goos: darwin
goarch: amd64
pkg: strconv
cpu: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz
BenchmarkAtof64Decimal-4        	24431032	        46.8 ns/op
...

As the displayed CPU information is only used for information
purposes it is lazily initialized when needed using the new
internal/sysinfo package.

This allows internal/cpu to stay without dependencies and avoid
initialization costs when the CPU information is not needed as
the new code to query the CPU name in internal/cpu can be
dead code eliminated if not used.

Fixes #39214

Change-Id: I77ae5c5d2fed6b28fa78dd45075f9f0a6a7f1bfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/263804
Trust: Martin Möhrmann <moehrmann@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2020-10-20 21:30:18 +00:00
Russ Cox
80182d45b5 go/build: refactor per-file info & reader
Make code cleaner and a bit more adaptable:
instead of an ever-growing list of arguments and results for readImports,
put everything in a fileInfo struct, and rename function to readGoInfo.
(Not a goInfo struct because it gets used for non-Go source files as well,
but that processing is much simpler.)

The refactoring simplifies the embed work in the next CL,
but this CL makes no semantic changes.

For #41191.

Change-Id: Id2de2a3b8d351adc1c919dcf79dfbe79fc3d5301
Reviewed-on: https://go-review.googlesource.com/c/go/+/243940
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-10-20 20:44:22 +00:00
Ian Lance Taylor
7f736694fe runtime: use GOTRACEBACK=system for TestCgoExecSignalMask
Try to get a bit more information to understand #42093.

For #42093

Change-Id: I818feb08d7561151d52eba3e88c418b55b9f9c1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/264018
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-10-20 20:17:14 +00:00
Michael Matloob
5e9582e3f0 cmd/go: support overlays for synthesized packages.
The main missing piece here was supporting Stat in the overlay
filesystem, in the parts of the package code that determines whether
an command line argument is a file on disk or a directory.  so this
change adds a Stat function to the fsys package. It's implemented the
same way as the already existing fsys.lstat function, but instead of
os.Lstat, it calls os.Stat on disk files.

Then, the change changes parts of the package code to use the overlay
Stat instead of the os package's Stat.

For #39958

Change-Id: I8e478ae386f05b48d7dd71bd7e47584f090623df
Reviewed-on: https://go-review.googlesource.com/c/go/+/262617
Trust: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-10-20 20:13:16 +00:00
Cherry Zhang
c9c64886ef cmd/internal/obj: reject too large symbols
We never supported symbol larger than 2GB (issue #9862), so the
object file uses 32-bit for symbol sizes. Check and reject too
large symbol before truncating its size.

Fixes #42054.

Change-Id: I0d1d585ebdba9556f2fd3a97043bd4296d5cc9e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/263641
Trust: Cherry Zhang <cherryyz@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
2020-10-20 18:51:03 +00:00
Jay Conrod
e2c420591c cmd/go/internal/modload: remove printStackInDie functionality
Previously, when running cmd/go tests, if the module root directory is
requested when modules are explicitly disabled, we printed a stack
trace in addition to the error message that's normally printed. The
stack trace isn't that useful, and it makes the actual error hard to
find.

Change-Id: I8230d668f3f16659f08d0d685124c41b4055c5b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/263659
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-10-20 18:46:31 +00:00
Russ Cox
1b09d43067 all: update references to symbols moved from io/ioutil to io
The old ioutil references are still valid, but update our code
to reflect best practices and get used to the new locations.

Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.
Also excluded vendored code.

For #41190.

Change-Id: I6d86f2bf7bc37a9d904b6cee3fe0c7af6d94d5b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/263142
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 18:41:18 +00:00
Russ Cox
cb0a0f52e6 io: adopt Discard, NopCloser, ReadAll from io/ioutil
As proposed and approved in #40025, Discard, NopCloser, and ReadAll
do not really fit into io/ioutil, which exists mainly to hold things that
would cause an import cycle if implemented in io itself, which is to say
things that import "os".

These three do not import "os" - they are generic io helpers like
many of the things in io itself, so it makes sense for them to be there.

Fixes #40025.

Change-Id: I77f47e9b2a72839edf7446997936631980047b67
Reviewed-on: https://go-review.googlesource.com/c/go/+/263141
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 18:41:16 +00:00
Russ Cox
7211694a1e net/http: add FS to convert fs.FS to FileSystem
Two different functions in the http API expect a FileSystem:
http.FileSystem and http.NewFileTransport.
Add a general converter http.FS to turn an fs.FS into an http.FileSystem
for use with either of these functions.

(The original plan was to add http.HandlerFS taking an fs.FS directly,
but that doesn't help with NewFileTransport.)

For #41190.

Change-Id: I5f242eafe9b963f4387419a2615bdb487c358f16
Reviewed-on: https://go-review.googlesource.com/c/go/+/243939
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 18:41:15 +00:00
Russ Cox
2a9aa4dcac html/template, text/template: add ParseFS
Now templates can be parsed not just from operating system files
but from arbitrary file systems, including zip files.

For #41190.

Change-Id: I2172001388ddb1f13defa6c5e644e8ec8703ee80
Reviewed-on: https://go-review.googlesource.com/c/go/+/243938
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 18:41:14 +00:00
Russ Cox
1296ee6b4f archive/zip: make Reader implement fs.FS
Now a zip.Reader (an open zip file) can be passed to code
that accepts a file system, such as (soon) template parsing.

For #41190.

Change-Id: If51b12e39db3ccc27f643c2453d3300a38035360
Reviewed-on: https://go-review.googlesource.com/c/go/+/243937
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 18:41:12 +00:00
Russ Cox
b64202bc29 io/fs: add Glob and GlobFS
Add Glob helper function, GlobFS interface, and test.
Add Glob method to fstest.MapFS.
Add testing of Glob method to fstest.TestFS.

For #41190.

Change-Id: If89dd7f63e310ba5ca2651340267a9ff39fcc0c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/243915
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:53:14 +00:00
Russ Cox
7a131acfd1 io/fs: add ReadDir and ReadDirFS
Add ReadDir helper function, ReadDirFS interface, and test.
Add ReadDir method to fstest.MapFS.
Add testing of ReadDir method to fstest.TestFS.

For #41190.

Change-Id: Ib860770ec7433ba77b29e626682b238f1b3bf54f
Reviewed-on: https://go-review.googlesource.com/c/go/+/243914
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:53:07 +00:00
Russ Cox
10a1a1a37c io/fs: add Stat and StatFS
Add Stat helper function, StatFS interface, and test.
Add Stat method to fstest.MapFS.
Add testing of Stat method to fstest.TestFS.

For #41190.

Change-Id: Icf8b6eb1c3fa6f93a9be8405ec5a9468fb1da97b
Reviewed-on: https://go-review.googlesource.com/c/go/+/243913
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:53:02 +00:00
Russ Cox
f098ccf04a io/fs: add ReadFile and ReadFileFS
Add ReadFile helper function, ReadFileFS interface, and test.
Add ReadFile method to fstest.MapFS.
Add testing of ReadFile method to fstest.TestFS.

For #41190.

Change-Id: I5b6a41e2e582824e570463b698b635abaa436c32
Reviewed-on: https://go-review.googlesource.com/c/go/+/243912
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:52:55 +00:00
Russ Cox
b1f76f7a22 os: add DirFS
It will inevitably be important to be able to pass an operating system
directory to code written to expect an fs.FS.

os.DirFS provides the conversion.

For #41190.

Change-Id: Id1a8fcbe4c7a30de2c47dea0504e9481a88b1b39
Reviewed-on: https://go-review.googlesource.com/c/go/+/243911
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:52:48 +00:00
Russ Cox
90c924ff88 testing/fstest: new package for testing file system code
This change adds basic test helpers for file system code.

The type MapFS is a simple map-based file system for use when
exercising general file system code.

The func TestFS tests a file system implementation.

For #41190.

Change-Id: I5a2036f57e733915ad508651ad7317749794423c
Reviewed-on: https://go-review.googlesource.com/c/go/+/243910
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 17:52:41 +00:00
Than McIntosh
d595712540 cmd/asm: rename "compiling runtime" flag
Rename the assembler "-compilingRuntime" flag to "-compiling-runtime",
to be more consistent with the flag style of other Go commands.

Change-Id: I8cc5cbf0b9b34d1dd4e9fa499d3fec8c1ef10b6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/263857
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-10-20 17:47:31 +00:00
Bryan C. Mills
f62d3202bf cmd/go/internal/renameio: include ios in the darwin test-flake mitigation
Because the "ios" build constraint implies "darwin", it is already
included in the general "darwin" flakiness workaround in
cmd/go/internal/robustio. We just need to relax the renameio test
to avoid false-positives there.

I do not expect this change to drive the rate of false-positives down
to zero, but it should at least reduce noise on the build dashboard.

For #42066

Change-Id: Ia33dbd33295fce5b3261b4831f2807ce29b82e65
Reviewed-on: https://go-review.googlesource.com/c/go/+/263777
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-10-20 17:36:42 +00:00
Michael Anthony Knyszek
05f5ae74bc runtime: fix scavenging tests for pallocChunkBytes huge pages and larger
Currently the scavenging tests implicitly assume that the system huge
page size is always strictly less than 4 MiB, or pallocChunkBytes. This
leads to failures on systems with huge pages of this size, and larger.

Filter out those tests on such platforms and add a test for the 4 MiB
case. The scavenger is already equipped to handle this case.

Huge page sizes > 4 MiB are effectively ignored, so also add a test case
to ensure that happens.

Unfortunately we can't actually run these tests in our CI because they
require the platform to provide the right huge page size, but we really
should just parameterize this value so we can test it (there's a TODO
about this already).

Fixes #42053.

Change-Id: Ia576cbf67e178a14a178a893967efbed27d6eb17
Reviewed-on: https://go-review.googlesource.com/c/go/+/263837
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
2020-10-20 15:19:09 +00:00
Daniel Martí
0bf507efe9 cmd/go: add BuildID to list -json -export
That is, the following two pieces of shell code are now equivalent:

	$ go tool buildid $(go list -export -f {{.Export}} strings)
	v_0VqA6yzwuMg2dn4u57/PXcIR2Pb8Mi9yRdcdkwe

	$ go list -export -f {{.BuildID}} strings
	v_0VqA6yzwuMg2dn4u57/PXcIR2Pb8Mi9yRdcdkwe

This does not expose any information that wasn't available before, but
makes this workflow simpler and faster. In the first example, we have to
execute two programs, and 'go tool buildid' has to re-open the export
data file to read the build ID.

With the new mechanism, 'go list -export' already has the build ID
ready, so we can simply print it out. Moreover, when listing lots of
related packages like './...', we can now obtain all their build IDs at
once.

Fixes #37281.

Change-Id: I8e2f65a08391b3df1a628c6e06e708b8c8cb7865
Reviewed-on: https://go-review.googlesource.com/c/go/+/263542
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-10-20 15:17:15 +00:00
Tobias Klauser
0709e58bee net/http/cgi: preserve env vars on illumos
Preserve the same environment variables as on solaris.

Spotted while reviewing CL 263577.

Change-Id: Id479dcf83d6231e9ef1fd2404b400d10082e1d0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/263802
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 14:04:18 +00:00
Martin Möhrmann
feb984c96b internal/cpu: make architectures without initialization work explicit
When cpu_no_init.go was created most architectures did not have
code in the doinit function. Currently only mips(le), riscv64 and
wasm do not have empty doinit functions.

Keeping cpu_no_init.go around does not reduce the work to satisfy
the build process when adding support for new architectures.

To support a new architecture a new file or build directive has to
be added to an existing file at any rate to define the constant
CacheLinePadSize. A new empty doinit can then be created in the
new file or the existing doinit can be reused when adding the
additional build directive.

Change-Id: I58a97f8cdf1cf1be85c37f4550c40750358aa031
Reviewed-on: https://go-review.googlesource.com/c/go/+/263801
Trust: Martin Möhrmann <moehrmann@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2020-10-20 12:10:43 +00:00
Martin Möhrmann
de932da453 internal/cpu: consolidate arm64 feature detection
Move code to detect and mask arm64 CPU features from
runtime to internal/cpu.

Change-Id: Ib784e2ff056e8def125d68827b852f07a3eff0db
Reviewed-on: https://go-review.googlesource.com/c/go/+/261878
Trust: Martin Möhrmann <moehrmann@google.com>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
2020-10-20 11:09:52 +00:00
Nikhil Benesch
55b2d479d7 net/http/cgi: preserve LD_LIBRARY_PATH on NetBSD, too
This makes the behavior of the cgi package on NetBSD consistent with its
behavior on the other BSDs. It is also necessary for the test suite to
pass on NetBSD with gccgo (see CL 261137).

Change-Id: I531a6e0954f895a921204dcc61e3f3e90860a23d
Reviewed-on: https://go-review.googlesource.com/c/go/+/263577
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Benny Siegert <bsiegert@gmail.com>
2020-10-20 08:08:15 +00:00
Tobias Klauser
310984bf54 syscall, cmd/go/internal/modload: add and use Access on aix
Implement Access using Faccessat on aix following golang.org/x/sys/unix
CL 262897 and switch cmd/go/internal/modload to use it to implement
hasWritePerm.

Change-Id: I682e44737ac2bac5a203ac1c9ddd277810454426
Reviewed-on: https://go-review.googlesource.com/c/go/+/263540
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-10-20 07:33:13 +00:00
Russ Cox
fcb9d6b5d0 io/fs: add FS, File, ReadDirFile; move DirEntry from os
These are the core interfaces for the io/fs design.
See #41190 and https://golang.org/s/draft-iofs-design for details.

DirEntry was left behind in the previous move from os
but is needed for ReadDirFile, so it moves in this commit.

Also apply a couple comment changes suggested in
the review of CL 261540.

For #41190.

Change-Id: I087741545139ed30b9ba5db728a0bad71129500b
Reviewed-on: https://go-review.googlesource.com/c/go/+/243908
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Rob Pike <r@golang.org>
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2020-10-20 02:32:46 +00:00
Russ Cox
9ad090c5fe testing/iotest: add TestReader to test readers
There are many reader behaviors that are subtle and
worth testing, and it's nice to have one complete tester
instead of many incomplete ones.

For #41190, which will use this as part of a larger
file system implementation tester.

Change-Id: Ib4cc7fae94b0d9b45dfacadc52baa77ad3761322
Reviewed-on: https://go-review.googlesource.com/c/go/+/243909
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 02:32:44 +00:00
Russ Cox
7bb721b938 all: update references to symbols moved from os to io/fs
The old os references are still valid, but update our code
to reflect best practices and get used to the new locations.

Code compiled with the bootstrap toolchain
(cmd/asm, cmd/dist, cmd/compile, debug/elf)
must remain Go 1.4-compatible and is excluded.

For #41190.

Change-Id: I8f9526977867c10a221e2f392f78d7dec073f1bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/243907
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 02:32:42 +00:00
Russ Cox
d4da735091 io/fs: move FileInfo, FileMode, PathError, ErrInvalid, ... from os to io/fs
First step of creating the new io/fs package.

For #41190.

Change-Id: I1339b1abdd533b0f1deab283628088b2f706fb5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/243906
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 02:32:41 +00:00
Cherry Zhang
627959eb04 cmd/link: support cgo internal/linking on darwin/arm64
Cgo programs work as well. Still not enabled by default for now.

Enable internal linking tests.

Updates #38485.

Change-Id: I8324a5c263fba221eb4e67d71207ca84fa241e6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/263637
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-10-20 02:25:52 +00:00
Cuong Manh Le
bccdd31252 cmd/compile: use type position for error message in align.go
This helps the compiler reports the right place where the type declared,
instead of relying on global lineno, which maybe set to wrong value at
the time the error is reported.

Fixes #42058

Change-Id: I06d34aa9b0236d122f4a0d72e66675ded022baac
Reviewed-on: https://go-review.googlesource.com/c/go/+/263597
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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2020-10-20 02:05:01 +00:00
Russ Cox
a505312c89 api: update next.txt
A bunch of new API hasn't been added yet and is cluttering all.bash output.

Change-Id: Ic7f255cce8c162716b9a1144f78b5f9ce6220b33
Reviewed-on: https://go-review.googlesource.com/c/go/+/262878
Trust: Russ Cox <rsc@golang.org>
Trust: Rob Pike <r@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-10-20 00:59:23 +00:00
Russ Cox
2291cae2af os: use keyed literals for PathError
Necessary to move PathError to io/fs.

For #41190.

Change-Id: I05e87675f38a22f0570d4366b751b6169f7a1b13
Reviewed-on: https://go-review.googlesource.com/c/go/+/243900
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-10-20 00:59:22 +00:00
Russ Cox
a4ede9f9a6 os: add File.ReadDir method and DirEntry type
ReadDir provides a portable, efficient way to read a directory
and discover the type of directory entries.
This enables a more efficient file system walk, yet to be added.

See #41467 for the proposal review for the API.

Fixes #41467.

Change-Id: I461a526793ae46df48821aa448b04f1705546739
Reviewed-on: https://go-review.googlesource.com/c/go/+/261540
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2020-10-20 00:59:20 +00:00
Dan Scales
8fe372c7b3 cmd/compile: allowing inlining of functions with OCALLPART
OCALLPART is exported in its original form, which is as an OXDOT.

The body of the method value wrapper created in makepartialcall() was
not being typechecked, and that was causing a problem during escape
analysis, so I added code to typecheck the body.

The go executable got slightly bigger with this change (13598111 ->
13598905), because of extra exported methods with OCALLPART (I
believe), while the text size got slightly smaller (9686964 ->
9686643).

This is mainly part of the work to make sure all function bodies can
be exported (for purposes of generics), but might as well fix the
OCALLPART inlining bug as well.

Fixes #18493

Change-Id: If7aa055ff78ed7a6330c6a1e22f836ec567d04fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/263620
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-10-20 00:07:42 +00:00
Michael Anthony Knyszek
2754d91164 runtime: add lock rank partial-order edge between fin and mheap
finlock may be held across a write barrier, which could then acquire the
mheap lock. Notably, this occurs in the mp.unlockf write in gopark where
finlock is held by the finalizer goroutines and is going to sleep.

Fixes #42062.

Change-Id: Icf76637ae6fc12795436272633dca3d473780875
Reviewed-on: https://go-review.googlesource.com/c/go/+/263678
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Dan Scales <danscales@google.com>
2020-10-19 23:35:51 +00:00
hk
70cad2744b cmd/compile/internal/gc: use plural nouns in comments
Change-Id: I99a5b5b88495cfaef16d41ee4b962c5d0b3488aa
GitHub-Last-Rev: fa0d895b3a
GitHub-Pull-Request: golang/go#42059
Reviewed-on: https://go-review.googlesource.com/c/go/+/263617
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Keith Randall <khr@golang.org>
Trust: Robert Griesemer <gri@golang.org>
2020-10-19 21:40:56 +00:00
Matthew Dempsky
c216ae80c9 cmd/compile: fix ICE in reporting of invalid recursive types
asNode(t.Nod).Name.Param will be nil for builtin types (i.e., the
universal predeclared types and unsafe.Pointer). These types can't be
part of a cycle anyway, so we can just skip them.

Fixes #42075.

Change-Id: Ic7a44de65c6bfd16936545dee25e36de8850acf3
Reviewed-on: https://go-review.googlesource.com/c/go/+/263717
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-10-19 21:30:43 +00:00