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Commit Graph

42827 Commits

Author SHA1 Message Date
Masahiro Furudate
0f2a1574b0 testing: change benchmark example function
Change to rand.Int, a function that the compiler cannot reliably eliminate.
Fix output to actual benchmark values.

Fixes #37341

Change-Id: Ifb5bf49b826ae0bdb4bf9de5a472ad0eaa54569c
Reviewed-on: https://go-review.googlesource.com/c/go/+/220397
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-24 01:25:54 +00:00
Ian Lance Taylor
5bd145413a time: don't get confused about day 31 when parsing 002
The 002 parsing code had a bug that mishandled day 31.

Fixes #37387

Change-Id: Ia5a492a4ddd09a4bc232ce9582aead42d5099bdd
Reviewed-on: https://go-review.googlesource.com/c/go/+/220637
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2020-02-23 18:06:08 +00:00
Andrew Bonventre
b0863ce0e6 Revert "time: add Ticker.Reset"
This reverts CL 217362 (6e5652bebede2d53484a872f6d1dfeb498b0b50c.)

Reason for revert: Causing failures on arm64 bots. See #33184 for more info

Change-Id: I72ba40047e4138767d95aaa68842893c3508c52f
Reviewed-on: https://go-review.googlesource.com/c/go/+/220638
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-23 17:58:14 +00:00
Tobias Klauser
576cc530c9 misc/cgo: enable testso and testsovar on mips64x
External linking on mips64 was implemented in CL 19803 and CL 19809

Updates #12560
Updates #14126

Change-Id: I2cc127d71173aade56ad181bdd947355a76b3e46
Reviewed-on: https://go-review.googlesource.com/c/go/+/217017
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-02-23 17:08:17 +00:00
Changkun Ou
6e5652bebe time: add Ticker.Reset
This CL implements Ticker.Reset method in time package.

Benchmark:
name                 time/op
TickerReset-12       6.41µs ±10%
TickerResetNaive-12  95.7µs ±12%

Fixes #33184

Change-Id: I12c651f81e452541bcbbc748b45f038aae1f8dae
Reviewed-on: https://go-review.googlesource.com/c/go/+/217362
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-23 16:09:02 +00:00
Sam Chen
ebe49b2c29 doc: remove extra br tags
Change-Id: I6db784c67dde058ddaae8d73b295ee02583a1ed4
GitHub-Last-Rev: fea8e66c8a
GitHub-Pull-Request: golang/go#37375
Reviewed-on: https://go-review.googlesource.com/c/go/+/220577
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-23 01:23:41 +00:00
Cuong Manh Le
dad553d92f cmd/compile: consistently use OXXX for works relate to Op
Passes toolstash-check.

Change-Id: I8ff2a702c445e98c227913369c139a5ef4a04916
Reviewed-on: https://go-review.googlesource.com/c/go/+/211397
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-02-22 17:58:24 +00:00
Jon Johnson
e9956791bf encoding/json: fix broken link to json.org
This updates the link to a newer image.

Change-Id: Ibdfe8c57d9217a325bcfde98cb6f952ca63d588a
GitHub-Last-Rev: f5970ba395
GitHub-Pull-Request: golang/go#36938
Reviewed-on: https://go-review.googlesource.com/c/go/+/217297
Reviewed-by: Toshihiro Shiino <shiino.toshihiro@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-22 17:39:09 +00:00
Hajime Hoshi
35b80575b8 syscall: release a js.Func object in fsCall
(This is a reland of golang.org/cl/217417.)

A js.Func object in fsCall was created for each call but never
released. This CL fixes this.

Change-Id: Ifc0efb997c9b3e04641839691ccc04de61ef28d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/220537
Run-TryBot: Hajime Hoshi <hajimehoshi@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-02-22 16:12:46 +00:00
Josh Bleecher Snyder
1894842b75 cmd/compile: allow values with aux Sym to fault on nil args
And use this newfound power to more precisely describe some PPC64 ops.

Change-Id: Idb2b669d74fbab5f3508edf19f7e3347306b0daf
Reviewed-on: https://go-review.googlesource.com/c/go/+/217002
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2020-02-22 15:33:55 +00:00
vovapi
638df87fa4 hash/maphash: don't discard data on random seed init
Hash initializes seed on the first usage of seed or state with initSeed.
initSeed uses SetSeed which discards accumulated data.
This causes hash to return different sums for the same data in the first use
and after reset.
This CL fixes this issue by separating the seed set from data discard.

Fixes #37315

Change-Id: Ic7020702c2ce822eb700af462e37efab12f72054
GitHub-Last-Rev: 48b2f963e8
GitHub-Pull-Request: golang/go#37328
Reviewed-on: https://go-review.googlesource.com/c/go/+/220259
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-02-22 15:25:30 +00:00
Ian Lance Taylor
7ee3b63c8b runtime: mark testCallersEqual as a test helper
Change-Id: I25e6fb733618b0a7af8adc69be85f3503810acf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/213658
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2020-02-22 04:32:05 +00:00
Ian Lance Taylor
059a5ac3eb test: add test that gccgo fails to compile
Change-Id: I14d31bb62fd0e26a84f8781644c40918404f5f3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/213899
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2020-02-22 04:31:41 +00:00
Ian Lance Taylor
f9c51e353f time: remove unnecessary trailing slash from "/etc/"
Fixes #36640

Change-Id: I2049b572347da1cb967f5a3f2bc342b310216435
Reviewed-on: https://go-review.googlesource.com/c/go/+/215519
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2020-02-22 04:31:20 +00:00
Ian Lance Taylor
5912f4fc37 runtime: really wait for goroutines in testSemaHandoff
The code has a comment saying that it waited for the goroutines,
but it didn't actually do so.

Change-Id: Icaeb40613711053a9f443cc34143835560427dda
Reviewed-on: https://go-review.googlesource.com/c/go/+/219277
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2020-02-22 04:08:12 +00:00
Cuong Manh Le
af686da46f cmd/compile: allow print/println(f()) where f() is multi-value
Fixes #35576

Change-Id: Ia128f412120069e9f8813e9e910e62644f950bfb
Reviewed-on: https://go-review.googlesource.com/c/go/+/207118
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-02-22 03:34:22 +00:00
Johan Jansson
d67d044310 crypto/tls: update ExampleDial with a valid root
When run as a separate program, the code in ExampleDial panicked due to
an expired certificate. Fixed this problem by replacing the expired
certificate with a valid one.

Also added a comment in the certificate to give a hint about why it
might fail in the future.

Fixes #35706

Change-Id: I3d300f7bccae050e4b73ded28b8029aa04b480bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/212601
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2020-02-21 23:20:22 +00:00
Filippo Valsorda
4045de378b crypto/tls: clarify TLS 1.0/1.1 CertificateRequestInfo.SignatureSchemes
This CL should not change the logic at all, but it took me a while to
figure out why we use these specific SignatureSchemes, so reformulate
the comment.

Change-Id: If519a58264209e6575417be07668e92ead0e772f
Reviewed-on: https://go-review.googlesource.com/c/go/+/208225
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
2020-02-21 23:18:43 +00:00
Cherry Zhang
3e4e644433 cmd/dist: test cgo internal linking PIE
On platforms where internal linking PIE is supported, run
misc/cgo/test with that configuration.

Change-Id: Ia09631b07cc469c85818e1494093d802ea9d69a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/218838
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-21 23:11:00 +00:00
Robert Griesemer
ffc0573b85 cmd/compile/internal/syntax: better error when an assignment is used in value context
The error message is now positioned at the statement position (which is
an identifing token, such as the '=' for assignments); and in case of
assignments it emphasizes the assignment by putting the Lhs and Rhs
in parentheses. Finally, the wording is changed from "use of * as value"
to the stronger "cannot use * as value" (for which there is precedent
elsewhere in the parser).

Fixes #36858.

Change-Id: Ic3f101bba50f58e3a1d9b29645066634631f2d61
Reviewed-on: https://go-review.googlesource.com/c/go/+/218337
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-02-21 22:57:52 +00:00
Cherry Zhang
d532d5f0fa cmd/link: also apply R_ADDR relocation statically when internal linking PIE
When internal linking PIE, R_ADDR relocations cannot be resolved
statically so we generate dynamic relocations for it. We don't
apply the relocations statically, so the bytes in the file are
left unset (likely zero). This makes some tool that examines the
file statically, e.g. go version, to fail to find the referenced
addresses.

This CL makes the linker also apply the relocations to the file
content, so it holds the correct offsets and so can be examined
statically.

Fixes #37173.

Change-Id: Ia5c6b661f1a91a232843ca4224264bfd7a5509eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/219199
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-21 22:30:06 +00:00
Dmitri Shuralyov
240498d635 test: close file in goFiles
Brad's battery died on a plane and the file stayed open for 8 years
without anyone noticing. 😄

Someone noticed in https://github.com/gopherjs/gopherjs/pull/950.

Updates #2833

Change-Id: I46b28ac014a8c355be94e026615f119f96e5d51a
Reviewed-on: https://go-review.googlesource.com/c/go/+/218700
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-02-21 22:00:03 +00:00
Cherry Zhang
baea3cd7c9 cmd/link: handle absolute address relocation in C objects for internal linking PIE
For an absolute address relocation in C objects (e.g.
R_X86_64_64), we turn it into an R_ADDR relocation and handle it
the same way. For internal linking PIE, this R_ADDR relocation
cannot be resolved statically. We need to generate a dynamic
relocation for it. This CL makes it so.

This fixes internal linking PIE on the dev.boringcrypto branch.
Test will be enabled in the next CL.

Change-Id: I9bdd6517ccd79cbbe9c64844a31536bf3da37616
Reviewed-on: https://go-review.googlesource.com/c/go/+/218837
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-21 21:33:57 +00:00
Josh Bleecher Snyder
bc5fc6d48f cmd/compile: preserve shift boundedness information in dec64
For clarity. No differences to generated code.

Change-Id: Ie4360681caac091eb82c59fb06e35b725b1850dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/217003
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-02-21 20:59:36 +00:00
Michael Pratt
675a2e7078 cmd/link: generate relative relocs for PIE
Go's PIE binaries have tons of relocations, all R_X86_64_64 [1] when
internally linked. R_X86_64_64 relocations require symbol lookup in the
dynamic linker, which can be quite slow. The simple Go HTTP server
in #36028 takes over 1s to complete dynamic linking!

The external linker generates R_X86_64_RELATIVE [2] relocations, which
are significantly more efficient. It turns out that generating these
relocations internally is quite simple, so lets do it.

Rather than referencing targ.Dynid in r_info and having the dynamic
linker do a symbol lookup and then add (final targ address) + r.Add, use
AddAddrPlus to generate another R_ADDR to have the linker compute (targ
address + r.Add). The dynamic linker is then only left with base address
+ r_addend.

Since we don't reference the symbol in the final relocation, Adddynsym
is no longer necessary, saving ~1MB (of ~9MB) from the binary size of
the example in #36028.

[1] R_AARCH64_ABS64 on arm64.
[2] R_AARCH64_RELATIVE on arm64.

Fixes #36028

Change-Id: Ie0f4bb1d911f2e05ab46a0a0454c0f46ac01b43b
Reviewed-on: https://go-review.googlesource.com/c/go/+/210181
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-21 20:28:45 +00:00
Bryan C. Mills
13d73b2a8a cmd/go: print a "found" line for each package found instead of each module added
We currently print a "go: finding" line for each missing package
during import resolution. However, we are only printing a "go: found"
line for each module: if a given module provides multiple packages, we
don't indicate the module that we found for the second and later
packages.

Before this change:

	$ GO111MODULE=on go get golang.org/x/tools/cmd/html2article@78f9822548c13e2c41cc8039d1492a111240db07
	go: found golang.org/x/tools/cmd/html2article in golang.org/x/tools v0.0.0-20190214195451-78f9822548c1
	go: finding module for package golang.org/x/net/html
	go: finding module for package golang.org/x/net/html/atom
	go: downloading golang.org/x/net v0.0.0-20200202094626-16171245cfb2
	go: found golang.org/x/net/html in golang.org/x/net v0.0.0-20200202094626-16171245cfb2

After:

	$ GO111MODULE=on go get golang.org/x/tools/cmd/html2article@78f9822548c13e2c41cc8039d1492a111240db07
	go: found golang.org/x/tools/cmd/html2article in golang.org/x/tools v0.0.0-20190214195451-78f9822548c1
	go: finding module for package golang.org/x/net/html/atom
	go: finding module for package golang.org/x/net/html
	go: found golang.org/x/net/html in golang.org/x/net v0.0.0-20200202094626-16171245cfb2
	go: found golang.org/x/net/html/atom in golang.org/x/net v0.0.0-20200202094626-16171245cfb2

Updates #26152
Updates #33284

Change-Id: I221548749e36bfd6a79efe5edc3645dc5319fd6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/219437
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-02-21 20:22:19 +00:00
Josh Bleecher Snyder
bcdd5d0024 cmd/compile: use shift boundedness when lowering shifts on 386
Minor improvements to generated code.

file                                          before   after    Δ       %
runtime.s                                     451117   450977   -140    -0.031%
compress/bzip2.s                              10202    10194    -8      -0.078%
compress/lzw.s                                5924     5904     -20     -0.338%
compress/flate.s                              45053    45032    -21     -0.047%
net.s                                         236980   236970   -10     -0.004%
vendor/golang.org/x/crypto/cryptobyte.s       29450    29439    -11     -0.037%
crypto/x509.s                                 107854   107840   -14     -0.013%
cmd/vendor/golang.org/x/arch/arm64/arm64asm.s 102448   102434   -14     -0.014%
cmd/internal/obj/arm.s                        60536    60528    -8      -0.013%
cmd/vendor/golang.org/x/mod/sumdb/tlog.s      38273    38276    +3      +0.008%
net/http.s                                    462215   462201   -14     -0.003%
cmd/compile/internal/ssa.s                    3951732  3954683  +2951   +0.075%
total                                         16946051 16948745 +2694   +0.016%

Change-Id: I9f6df1a90a295dce6fe86c8eb7576a8c96f8bb0a
Reviewed-on: https://go-review.googlesource.com/c/go/+/217000
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-02-21 20:18:17 +00:00
Dmitri Shuralyov
333087623a CONTRIBUTORS: second round of updates for Go 1.14
This update was automatically generated using the updatecontrib command:

	cd gotip
	go run golang.org/x/build/cmd/updatecontrib

With minor manual changes based on publicly available information
to canonicalize letter case and formatting for a few names.

Actions taken (relative to CONTRIBUTORS at origin/master):

	Added Aaron Bieber <deftly@gmail.com>
	Added Adam Williams <pwnfactory@gmail.com>
	Added Ayke van Laethem <aykevanlaethem@gmail.com>
	Added Bradford Lamson-Scribner <brad.lamson@gmail.com>
	Added Brian Falk <falk@logicparty.org>
	Added Chen Zhihan <energiehund@gmail.com>
	Added Christopher Loessl <cloessl+github@gmail.com>
	Added Frederik Zipp <fzipp@gmx.de>
	Added Fujimoto Kyosuke <kyoro.f@gmail.com>
	Added GitHub User jopbrown (6345470) <msshane2008@gmail.com>
	Added GitHub User yah01 (12216890) <kagaminehuan@gmail.com>
	Added Hiromichi Ema <ema.hiro@gmail.com>
	Added Jamal Carvalho <jamal.a.carvalho@gmail.com>
	Added Jason Baker <jason-baker@users.noreply.github.com>
	Added Kanta Ebihara <kantaebihara@gmail.com>
	Added Kirill Tatchihin <kirabsuir@gmail.com>
	Added Kévin Dunglas <dunglas@gmail.com>
	Added Mariano Cano <mariano@smallstep.com>
	Added Sergey Ivanov <ser1325@gmail.com>
	Added Thomas Symborski <thomas.symborski@gmail.com>
	Added Tomohiro Kusumoto <zabio1192@gmail.com>
	Added Xingqang Bai <bxq2011hust@qq.com>
	Used GitHub User jopbrown (6345470) form for jopbrown <msshane2008@gmail.com> https://github.com/golang/exp/commit/0405dc7 [exp]
	Used GitHub User yah01 (12216890) form for yah01 <kagaminehuan@gmail.com> https://github.com/golang/go/commit/ee55dd6b64 [go]
	Used GitHub name "Hiromichi Ema" for emahiro <ema.hiro@gmail.com> https://github.com/golang/tools/commit/b6336cbc [tools]
	Used GitHub name "Jamal Carvalho" for Gopher <jamal.a.carvalho@gmail.com> https://github.com/golang/gddo/commit/31dd61d [gddo]
	Used GitHub name "Xingqang Bai" for bxq2011hust <bxq2011hust@qq.com> https://github.com/golang/go/commit/79ccbe1b67 [go]

Updates #12042

Change-Id: I13f8ab37f8b38f8f5d0ff71c939ad39d0bc4f985
Reviewed-on: https://go-review.googlesource.com/c/go/+/220363
Reviewed-by: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-21 19:59:34 +00:00
Bryan C. Mills
cf6739caad cmd/go: add a regression test for package import cycles guarded by build tags
I've been thinking about the relationship between the package import
graph and the module import graph, and realized that the package
import graph is not always acyclic. (The package import graph must be
acyclic given a specific set of build tags, but the 'mod' subcommands
intentionally ignore build tags.)

I'm not sure whether we have any existing regression tests that cover
this sort of cycle, so I'm adding one now. Thankfully, it passes!

Updates #36460

Change-Id: I7679320994ee169855241efa51cd45f71315f7f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/217557
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-21 19:58:38 +00:00
Katie Hockman
8c09e8af36 crypto/ecdsa: add SignASN1, VerifyASN1
Update the Example in the crypto/ecdsa package for signing
and verifying signatures to use these new functions.

This also changes (*PrivateKey).Sign to use
x/crypto/cryptobyte/asn1 instead of encoding/asn1
to marshal the signature.

Fixes #20544

Change-Id: I3423cfc4d7f9e1748fbed5a631438c8a3b280df4
Reviewed-on: https://go-review.googlesource.com/c/go/+/217940
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2020-02-21 19:38:55 +00:00
Hana (Hyang-Ah) Kim
f5ff00583f net/http/pprof: set content type for /debug/pprof
Fixes #37311

Change-Id: I9e1f37e991e5c203fe72061692f47584fbadfc58
Reviewed-on: https://go-review.googlesource.com/c/go/+/220324
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
2020-02-21 19:28:40 +00:00
Daniel Theophanes
6c61a57cfc database/sql: add SetConnMaxIdleTime
Allow removing a connection from the connection pool after
it has been idle for a period of time, without regard to the
total lifespan of the connection.

Fixes #25232

Change-Id: Icff157b906769a2d2d45c67525e04a72feb8d832
Reviewed-on: https://go-review.googlesource.com/c/go/+/145758
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2020-02-21 18:36:57 +00:00
Davor Kapsa
753011ebc3 io: check n in testReadAtLeast
Change-Id: I53859d4d3c729cce9f73b14dc2dd8571f7e7ffb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/216457
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-02-21 18:36:11 +00:00
vovapi
7f41a009a6 go/constant: remove redundant octal & separator literals parsing
Octal literals parsing was implemented in strconv in golang.org/cl/160244
and in math/big in golang.org/cl/165898.
Underscore separator parsing was implemented in strconv in golang.org/cl/160243
and in math/big golang.org/cl/166157.
Thus octal & underscore literal parsing in go/constant is removed as redundant.

This CL resolves TODO left by gri in golang.org/cl/160239 .

Change-Id: I311872dac49b1a13063e0abc1794001956620c5a
GitHub-Last-Rev: 264caf574e
GitHub-Pull-Request: golang/go#36630
Reviewed-on: https://go-review.googlesource.com/c/go/+/215277
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-02-21 18:34:54 +00:00
Joe Kyo
2edeb23bf5 container/list: remove temporary variable n
The variable `n` for saving the pointer of the next
element when insert new element into the list turns
out to be unnecessary.

Change-Id: I17b85fd8350738815c320a83945525b60c2f04c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/207037
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-02-21 18:32:32 +00:00
Daniel Martí
7855d6835d cmd/compile: add a script to measure ssa/gen's coverage
Since rulegen is only tested by inspecting and running its output code,
we have no good way to see if any chunks of its source are actually
being unused.

Code coverage only works as part of 'go test', since it needs to
instrument our code. Add a script that sets up a tiny test for that
purpose, with a quick example on how to use it.

We need to use a script, because there's no other way to make this work
without breaking 'go run *.go'. It's far more common to run the
generator than to obtain a coverage profile, so this solution seems like
the right tradeoff, and we don't break existing users.

The script isn't terribly portable, but that's okay for now.

At the time of wriging, coverage sits at 89.7%. I've manually skimmed
main.go and rulegen.go, and practically all unused code is either error
handling, or optional code like *genLog and "if false". A couple of
small exceptions stand out, though I'm not paying attention to them in
this CL.

While at it, inline a couple of tiny unusedInspector methods that were
only needed once or twice.

Change-Id: I78c5fb47c8536d70e546a437637d4428ec7adfaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/212760
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-02-21 18:30:22 +00:00
Alexander Rakoczy
4f020a52c5 crypto/x509: correct error message for trailing issuer data
The error message for trailing data after the X.509 issuer should
correctly state "issuer" instead of "subject", which appears just above
this code.

Fixes #35841

Change-Id: Iea2605ce97f2b084eb78e88f2c27d7d43749d022
Reviewed-on: https://go-review.googlesource.com/c/go/+/208978
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
2020-02-21 18:28:52 +00:00
Daniel Martí
ae7cd5c029 doc/go1.14: document the change to json.Number decoding
It might break a program if it was depending on undocumented behavior.
Give a proper heads up.

Fixes #37308.

Change-Id: Id65bc70def1138d5506b694329c52250b417ec6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/220418
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-02-21 18:26:29 +00:00
Timmy Douglas
30e3bf2051 net/mail: skip empty entries in parseAddressList
RFC 5322 has a section 4.4 where it says that address-list could
have "null" members: "That is, there could be two or more commas in
such a list with nothing in between them, or commas at the beginning
or end of the list." This change handles such a case so that mail
clients using this method on actual email messages get a reasonable
return value when they parse email.

Fixes #36959

Change-Id: I3ca240969935067262e3d751d376a06db1fef2a2
GitHub-Last-Rev: b96a9f2c07
GitHub-Pull-Request: golang/go#36966
Reviewed-on: https://go-review.googlesource.com/c/go/+/217377
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-21 18:18:25 +00:00
Bryan C. Mills
9ca57923e2 testing: testing: add (*T).Deadline method for test timeout
Fixes #28135

Change-Id: I62818595eaf4a59d8b5c26cd6848c08fec795ad1
Reviewed-on: https://go-review.googlesource.com/c/go/+/202758
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-21 17:46:33 +00:00
Josh Bleecher Snyder
1b47fde55c cmd/compile: clarify division bounds check optimization
The name of the function should mention division.
Eliminate double negatives from the comment describing it.

Change-Id: Icef1a5139b3a91b86acb930af97938f5160f7342
Reviewed-on: https://go-review.googlesource.com/c/go/+/217001
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-21 17:28:10 +00:00
Josh Bleecher Snyder
e932f0addc cmd/compile: coalesce some 386 shift lowering rules
No changes to generated rule matching code.

Change-Id: I0009146a6be30e151a403c4801c03abf0646703d
Reviewed-on: https://go-review.googlesource.com/c/go/+/216999
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-21 17:26:35 +00:00
Josh Bleecher Snyder
ccb95b6492 cmd/compile: preserve shift boundness during wasm rewrite rules
Mostly for clarity. There are nominal improvements to the generated code:

file      before    after     Δ       %
addr2line 4742769   4742639   -130    -0.003%
api       6973284   6973209   -75     -0.001%
asm       5922230   5922127   -103    -0.002%
buildid   3117327   3117252   -75     -0.002%
cgo       5539274   5539199   -75     -0.001%
compile   27423605  27424940  +1335   +0.005%
cover     6096973   6096898   -75     -0.001%
dist      4121655   4121580   -75     -0.002%
doc       5386254   5386179   -75     -0.001%
fix       3755243   3755168   -75     -0.002%
link      7602682   7602607   -75     -0.001%
nm        4687186   4687056   -130    -0.003%
objdump   5184883   5184753   -130    -0.003%
pack      2511360   2511285   -75     -0.003%
pprof     16872050  16871832  -218    -0.001%
test2json 3060633   3060558   -75     -0.002%
trace     13170181  13170018  -163    -0.001%
vet       9865995   9865920   -75     -0.001%
total     151188868 151188504 -364    -0.000%

Change-Id: If765e3661549d183a2dbb44e83521c4a3f61d175
Reviewed-on: https://go-review.googlesource.com/c/go/+/216998
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-02-21 05:04:06 +00:00
Josh Bleecher Snyder
60651a1bc8 cmd/compile: add rule location to some rulegen logging
This requires threading location information through varCount.

This provides much more useful error messages.

Change-Id: If5ff942cbbbf386724eda15a523c181c137fac20
Reviewed-on: https://go-review.googlesource.com/c/go/+/216221
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-21 04:25:16 +00:00
Josh Bleecher Snyder
6dd11bcb35 cmd/compile: remove chunking of rewrite rules
We added chunking of rewrite rules to speed up compiling package SSA.
This series of changes has significantly shrunk the number of
rewrite rules, and they are no longer being added nearly as fast.
Now that we are sharing v.Args across multiple rewrite rules,
there is additional benefit to having more rules in a single function.
Removing chunking now has an incidental impact on compiling package SSA,
marginally speeds up other compilation, shrinks the cmd/compile binary,
and simplifies the code.

name        old time/op       new time/op       delta
Template          211ms ± 2%        210ms ± 2%  -0.50%  (p=0.000 n=91+97)
Unicode          81.9ms ± 3%       81.8ms ± 3%    ~     (p=0.179 n=96+91)
GoTypes           731ms ± 2%        731ms ± 1%    ~     (p=0.442 n=94+96)
Compiler          3.43s ± 2%        3.41s ± 2%  -0.36%  (p=0.001 n=98+94)
SSA               8.30s ± 2%        8.32s ± 2%  +0.19%  (p=0.034 n=94+95)
Flate             135ms ± 2%        134ms ± 1%  -0.30%  (p=0.006 n=98+94)
GoParser          167ms ± 1%        167ms ± 1%  -0.22%  (p=0.001 n=92+94)
Reflect           453ms ± 2%        453ms ± 3%    ~     (p=0.306 n=98+97)
Tar               184ms ± 2%        183ms ± 2%  -0.31%  (p=0.012 n=94+94)
XML               249ms ± 2%        248ms ± 1%  -0.26%  (p=0.002 n=96+92)
[Geo mean]        419ms             418ms       -0.21%

name        old user-time/op  new user-time/op  delta
Template          273ms ± 2%        272ms ± 2%  -0.46%  (p=0.000 n=93+96)
Unicode           116ms ± 4%        117ms ± 4%    ~     (p=0.433 n=98+98)
GoTypes           977ms ± 2%        977ms ± 1%    ~     (p=0.971 n=92+99)
Compiler          4.56s ± 6%        4.53s ± 6%    ~     (p=0.081 n=100+100)
SSA               11.1s ± 2%        11.1s ± 2%    ~     (p=0.064 n=99+96)
Flate             167ms ± 2%        167ms ± 1%  -0.24%  (p=0.004 n=95+96)
GoParser          203ms ± 1%        203ms ± 2%  -0.14%  (p=0.049 n=96+97)
Reflect           595ms ± 2%        595ms ± 2%    ~     (p=0.544 n=95+92)
Tar               225ms ± 2%        224ms ± 2%    ~     (p=0.562 n=99+99)
XML               312ms ± 2%        311ms ± 1%    ~     (p=0.050 n=97+93)
[Geo mean]        543ms             542ms       -0.13%

Change-Id: I8d34ab59f154b28f20c6f9e416b976bfce339baa
Reviewed-on: https://go-review.googlesource.com/c/go/+/216220
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-02-21 02:29:11 +00:00
Josh Bleecher Snyder
1bc116b73c cmd/compile: extract function for splitting up x:(Foo) in rewrite rule fragments
We had three implementations.

Refactor, and document the shared implementation.

While we're here, improve the docs for func unbalanced.

Change-Id: I612cce79de15a864247afe377d3739d04a56b9bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/216219
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-21 01:48:01 +00:00
Josh Bleecher Snyder
a3f234c706 cmd/compile: reduce bounds checks in generated rewrite rules
CL 213703 converted generated rewrite rules for commutative ops
to use loops instead of duplicated code.

However, it loaded args using expressions like
v.Args[i] and v.Args[i^1], which the compiler could
not eliminate bounds for (including with all outstanding
prove CLs).

Also, given a series of separate rewrite rules for the same op,
we generated bounds checks for every rewrite rule, even though
we were repeatedly loading the same set of args.

This change reduces both sets of bounds checks.

Instead of loading v.Args[i] and v.Args[i^1] for commutative loops,
we now preload v.Args[0] and v.Args[1] into local variables,
and then swap them (as needed) in the commutative loop post statement.

And we now load all top level v.Args into local variables
at the beginning of every rewrite rule function.

The second optimization is the more significant,
but the first helps a little, and they play together
nicely from the perspective of generating the code.

This does increase register pressure, but the reduced bounds
checks more than compensate.

Note that the vast majority of rewrite rules evaluated
are not applied, so the prologue is the most important
part of the rewrite rules.

There is one subtle aspect to the new generated code.
Because the top level v.Args are shared across rewrite rules,
and rule evaluation can swap v_0 and v_1, v_0 and v_1
can end up being swapped from one rule to the next.
That is OK, because any time a rule does not get applied,
they will have been swapped exactly twice.

Passes toolstash-check -all.

name        old time/op       new time/op       delta
Template          213ms ± 2%        211ms ± 2%  -0.85%  (p=0.000 n=92+96)
Unicode          83.5ms ± 2%       83.2ms ± 2%  -0.41%  (p=0.004 n=95+90)
GoTypes           737ms ± 2%        733ms ± 2%  -0.51%  (p=0.000 n=91+94)
Compiler          3.45s ± 2%        3.43s ± 2%  -0.44%  (p=0.000 n=99+100)
SSA               8.54s ± 1%        8.32s ± 2%  -2.56%  (p=0.000 n=96+99)
Flate             136ms ± 2%        135ms ± 1%  -0.47%  (p=0.000 n=96+96)
GoParser          169ms ± 1%        168ms ± 1%  -0.33%  (p=0.000 n=96+93)
Reflect           456ms ± 3%        455ms ± 3%    ~     (p=0.261 n=95+94)
Tar               186ms ± 2%        185ms ± 2%  -0.48%  (p=0.000 n=94+95)
XML               251ms ± 1%        250ms ± 1%  -0.51%  (p=0.000 n=91+94)
[Geo mean]        424ms             421ms       -0.68%

name        old user-time/op  new user-time/op  delta
Template          275ms ± 1%        274ms ± 2%  -0.55%  (p=0.000 n=95+98)
Unicode           118ms ± 4%        118ms ± 4%    ~     (p=0.642 n=98+90)
GoTypes           983ms ± 1%        980ms ± 1%  -0.30%  (p=0.000 n=93+93)
Compiler          4.56s ± 6%        4.52s ± 6%  -0.72%  (p=0.003 n=100+100)
SSA               11.4s ± 1%        11.1s ± 1%  -2.50%  (p=0.000 n=96+97)
Flate             168ms ± 1%        167ms ± 1%  -0.49%  (p=0.000 n=92+92)
GoParser          204ms ± 1%        204ms ± 2%  -0.27%  (p=0.003 n=99+96)
Reflect           599ms ± 2%        598ms ± 2%    ~     (p=0.116 n=95+92)
Tar               227ms ± 2%        225ms ± 2%  -0.57%  (p=0.000 n=95+98)
XML               313ms ± 2%        312ms ± 1%  -0.37%  (p=0.000 n=89+95)
[Geo mean]        547ms             544ms       -0.61%

file    before    after     Δ       %
compile 21113112  21109016  -4096   -0.019%
total   131704940 131700844 -4096   -0.003%

Change-Id: Id6c39e0367e597c0c75b8a4b1eb14cc3cbd11956
Reviewed-on: https://go-review.googlesource.com/c/go/+/216218
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-02-21 00:55:58 +00:00
Josh Bleecher Snyder
a37bbcecca cmd/compile: use ellipses in AMD64 rules
file    before    after     Δ       %
compile 20801800  20743944  -57856  -0.278%
total   131542652 131484796 -57856  -0.044%

file                       before    after     Δ       %
cmd/compile/internal/ssa.a 23321562  23177930  -143632 -0.616%
total                      125602774 125459142 -143632 -0.114%

Change-Id: I3bdcff87e76d95a4367738a55316bd561c719c5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/220349
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-20 22:34:30 +00:00
Josh Bleecher Snyder
8484d409ac cmd/compile: add ellipsis syntax for op-only rewrite rules
This change introduces a new syntax for rewrite rules
that only change a Value's Op. See #36380 for more discussion.

Updating rewrite rules to use ellipses will happen
in follow-up CLs.

Change-Id: I8c56e85de24607579d79729575c89ca80805ba5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/213898
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-02-20 22:34:08 +00:00
Josh Bleecher Snyder
0f7088ade5 cmd/compile: dump contents when rulegen generates invalid code
It's much easier to debug when you can see
the contents in order to interpret the error message.

Change-Id: I03bbb9dd3071aeca9577cc725a60d43f78118cf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/215717
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
2020-02-20 22:33:55 +00:00