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47790 Commits

Author SHA1 Message Date
Robert Griesemer
a71528ad31 cmd/compile/internal/types2: review fixedbugs tests
These tests match the corresponding tests for go/types
which have been reviewed.
This CL simply removes the UNREVIEWED disclaimer.

Change-Id: I4dfe2aedc1341ebb9ba206aac1a072f32cbe1f78
Reviewed-on: https://go-review.googlesource.com/c/go/+/312569
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-22 04:07:32 +00:00
Robert Griesemer
ece5935364 cmd/compile/internal/types2: better errors for invalid short var decls
- rewrite Checker.shortVarDecl core loop for clarity
- match compiler error messages (#43087)
- don't allow multiple identical redeclarations (#45652)

For #43087.
For #45652.

Change-Id: I8c3329a553aa104d7853fbaea8b88049bc9b3b88
Reviewed-on: https://go-review.googlesource.com/c/go/+/312170
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-22 04:04:47 +00:00
Robert Griesemer
48b368b01f cmd/compile/internal/types2: avoid follow-on errors for invalid [...] array
Fixes #42987.

Change-Id: Iaaa46e1f79525cd1e418c1a81a6414d11f8120b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/311889
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-22 04:04:40 +00:00
Rob Findley
617a83ec68 go/types: re-enable a commented out test
This test was unnecessarily commented out in CL 312190: re-enable it and
update its assertions.

Change-Id: Ic08563e25c9b05a8e35d67690f5d27a761133266
Reviewed-on: https://go-review.googlesource.com/c/go/+/312097
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-22 03:03:48 +00:00
Rob Findley
f0a8101d34 go/types: combine two loops (cleanup of TODO)
This is an exact port of CL 307949 to go/types.

Change-Id: I796f3030a86d76deb80e58bb547460b586480911
Reviewed-on: https://go-review.googlesource.com/c/go/+/312096
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-22 03:03:41 +00:00
eric fang
5daefc5363 cmd/internal/obj/arm64: fix the wrong ROR operator of some instructions
Instructions such as ADD, SUB, CMP do not support ROR shift operations,
but we have not checked this at present. This CL adds this check.

Change-Id: Icac461f61ad6ddb60886a59ba34dddd29df1cc0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/310035
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: eric fang <eric.fang@arm.com>
Run-TryBot: eric fang <eric.fang@arm.com>
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2021-04-22 01:40:02 +00:00
fanzha02
0636d88f6d cmd/compile: add restrictions on the shift amount range of arm64 various instructions
For arm64 constant shift instructions, e.g., LSL(immediate), they use
only the low 6 bits. To conform the semantics of the hardware instructions,
this CL comments in ARM64OPS.go about restricted AuxInt ranges for the
various instructions involved.

Change-Id: I2b6560d6580e22ba7cbfa744a02b046dd5714b8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/303569
Trust: fannie zhang <Fannie.Zhang@arm.com>
Reviewed-by: Keith Randall <khr@golang.org>
2021-04-22 01:29:53 +00:00
Ian Lance Taylor
02a8e83661 runtime: don't run TestCrashDumpsAllThreads in parallel
It sometimes seems to time out on slow systems, perhaps due to
being run at the same time as a lot of other work.

Also move the code to testdata/testprog, so that we don't have to
build it separately.

I hope that this
Fixes #35356

Change-Id: I875b858fa23836513ae14d3116461e22fffd5352
Reviewed-on: https://go-review.googlesource.com/c/go/+/312510
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-22 00:34:25 +00:00
Rob Findley
7bedd47798 go/types: combine all type inference in a single function
This is a port of CL 306170 to go/types, adjusted for the different
positioning API.

Some of the error positions in tests had to be adjusted, but I think the
new locations are better.

Change-Id: Ib157fbb47d7483e3c6302bd57f5070bd74602a36
Reviewed-on: https://go-review.googlesource.com/c/go/+/312191
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 23:21:55 +00:00
Michael Anthony Knyszek
6639bb894d runtime: call nanotimeQPC from nanotime1 normally
Currently we call runtimeQPC as ABIInternal because it shaves off 24
bytes by not having an extra wrapper, and at the time we were exceeding
the nosplit stack limit in some cases.

However, this code was written before we had the regabiargs GOEXPERIMENT
flag, and wasn't properly flagged. Naturally, with regabiargs enabled,
it leads to garbage being returned, because it needs to store
runtimeQPC's result to the stack.

We didn't notice this because today runtimeQPC is only used in Wine, not
on any native Windows platform.

Back when I wrote this code, it appeared to be necessary on even native
Windows, but it turns out that's not true anymore. Turn it back into a
native call through a wrapper.

For #40724.

Change-Id: Ia2e5901965ef46c5f299daccef49952026854fe6
Reviewed-on: https://go-review.googlesource.com/c/go/+/312429
Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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2021-04-21 23:01:42 +00:00
Andrew G. Morgan
7e97e4e8cc syscall: syscall.AllThreadsSyscall signal handling fixes
The runtime support for syscall.AllThreadsSyscall() functions had
some corner case deadlock issues when signal handling was in use.
This was observed in at least 3 build test failures on ppc64 and
amd64 architecture CGO_ENABLED=0 builds over the last few months.

The fixes involve more controlled handling of signals while the
AllThreads mechanism is being executed. Further details are
discussed in bug #44193.

The all-threads syscall support is new in go1.16, so earlier
releases are not affected by this bug.

Fixes #44193

Change-Id: I01ba8508a6e1bb2d872751f50da86dd07911a41d
Reviewed-on: https://go-review.googlesource.com/c/go/+/305149
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Pratt <mpratt@google.com>
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
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2021-04-21 21:25:26 +00:00
Lynn Boger
54af9fd9e6 internal/bytealg: add power9 version of bytes index
This adds a power9 version of the bytes.Index function
for little endian.

Here is the improvement on power9 for some of the Index
benchmarks:

Index/10           -0.14%
Index/32           -3.19%
Index/4K          -12.66%
Index/4M          -13.34%
Index/64M         -13.17%
Count/10           -0.59%
Count/32           -2.88%
Count/4K          -12.63%
Count/4M          -13.35%
Count/64M         -13.17%
IndexHard1        -23.03%
IndexHard2        -13.01%
IndexHard3        -22.12%
IndexHard4         +0.16%
CountHard1        -23.02%
CountHard2        -13.01%
CountHard3        -22.12%
IndexPeriodic/IndexPeriodic2  -22.85%
IndexPeriodic/IndexPeriodic4  -23.15%

Change-Id: Id72353e2771eba2efbb1544d5f0be65f8a9f0433
Reviewed-on: https://go-review.googlesource.com/c/go/+/311380
Run-TryBot: Carlos Eduardo Seo <carlos.seo@linaro.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
2021-04-21 21:14:04 +00:00
Rob Findley
122fca49f9 go/types: simplify Checker.Call
This is a direct port of CL 306171 to go/types.

Change-Id: I6f0102c76bad3f1d939074fc4c59f772dd417498
Reviewed-on: https://go-review.googlesource.com/c/go/+/312190
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 20:44:00 +00:00
Tobias Klauser
1d2101116f net: don't check nil err twice in interfaceMessages on freebsd
Change-Id: Ie614e49d07b24c5b3dde469561893643bc858d1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/312389
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-04-21 20:39:43 +00:00
Rob Findley
614a9c2613 go/types: simplify Checker.funcInst
This is a port of CL 306169 to go/types, adjusted only for use of the
typeparams package, and the different positioning API.

Change-Id: I3095f4b0dae4473e75ec2a988ea282bac1a4bab3
Reviewed-on: https://go-review.googlesource.com/c/go/+/312189
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 20:36:36 +00:00
Rob Findley
39785912b9 go/types: add sizeof test
This is a direct port of CL 310530 to go/types, adjusted only for names
and to account for the smaller size of objects in go/types, due to
(I assume) token.Pos vs syntax.Pos.

Change-Id: I0cc34d56e41c1e66b17edd0ccd3f281d97a6b235
Reviewed-on: https://go-review.googlesource.com/c/go/+/312091
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Griesemer <gri@golang.org>
2021-04-21 20:35:43 +00:00
Keith Randall
255056395e test: add a field tracking test
Now that we can set experiments at build time instead of make.bash time,
we can actually write a test for field tracking!

Update #20014

This CL contains a test for the functionality fixed in CL 312069.

Change-Id: I7569a7057bbc7c88ae25ae7bf974b0c8a4e35be8
Reviewed-on: https://go-review.googlesource.com/c/go/+/312217
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 20:24:34 +00:00
Ian Lance Taylor
35806efda2 io/fs: document that caller can modify slice returned by ReadFile
Also add a test to testing/fstest.

Fixes #45186

Change-Id: I00e5f46ccd5269dbc266a8f2ebc9a62ebb1297b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/311649
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2021-04-21 16:46:52 +00:00
Robert Griesemer
b8a359d984 cmd/compile/internal/types2: fix incorrect result type of Checker.index
While at it, add missing "invalid argument: " prefix
to a couple of local error messages, for consistency.

For #45667.

Change-Id: I814800b2f3f3750583e335c98a3f8e27030a9daa
Reviewed-on: https://go-review.googlesource.com/c/go/+/312309
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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2021-04-21 16:26:01 +00:00
Tobias Klauser
f9e2dbbfc9 syscall: use libc in Exec on openbsd/arm64
Like on openbsd/amd64, use libc instead of direct syscalls on
openbsd/arm64.

This was likely missed in CL 286815. A similar change was done for
openbsd/amd64 in CL 270380.

Updates #36435

Change-Id: Ie496a6130f1a43d30974502777db12217e65c551
Reviewed-on: https://go-review.googlesource.com/c/go/+/312229
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
2021-04-21 15:57:05 +00:00
Cherry Zhang
e5bc4f2a77 cmd/compile: reenable name preservation on copies in expand_calls
This reverts CL 311829, and reenables CL 309330. The issue
should be fixed in the previous CL.

Change-Id: I69db0565c72470a1814f135d8f8ec62c781bfc5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/312094
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-21 14:16:01 +00:00
Cherry Zhang
daee726a0b cmd/compile: don't accumulate duplicated named slots
Currently, in expand_calls, for each appearance of a named
variables's component, we add the named slot to f.Names list. If
a variable appears many times, we add it to f.Names many times.
Furthure, for each duplicated named slot, its entry in
f.NamedValues is a slice that contains all Values associated with
that name. This leads to quadratic behavior when iterating named
values like

	for _, name := range f.Names {
		for _, v := range f.NamedValues[name] {
			...
		}
	}

This CL makes it not to add duplicated entries to f.Names.

Change-Id: I82a8d009db81ecf48b4577e0bca501feff677cdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/312093
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-21 14:15:55 +00:00
Michael Pratt
4d56576ec0 runtime: move timer recheck after GC recheck
When rechecking for work after transitioning from a spinning to
non-spinning M, checking timers before GC isn't useful. That is, if
there is GC work available, it will run immediately and the updated
pollUntil is unused.

Move this check to just before netpoll, where pollUntil is used. While
this technically improves efficiency in the (rare) case that we find
GC work in this block, the primary motivation is simply to improve
clarity by moving the update closer to use.

For #43997

Change-Id: Ibc7fb308ac4a582875c200659c9e272121a89f3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/308654
Trust: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-21 13:38:59 +00:00
Bryan C. Mills
381252f312 cmd/go/internal/modload: use updateRequirements instead of editRequirements to add modules for missing packages
editRequirements does a lot of work in order to respect the upper
bounds of mustSelect, and as a result it doesn't provide many promises
about conserving other things (like root dependencies).

When we add modules for missing packages, we aren't dealing with upper
bounds at all, so we would rather avoid the upper-bound overhead and
preserve the root-dependency invariants instead.
(*loader).updateRequirements does exactly that; it just needs to be
told about the additional dependencies to add.

For #36460

Change-Id: Ie0f2bc0dde18026bbd23e51357bb1d725d201680
Reviewed-on: https://go-review.googlesource.com/c/go/+/310791
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 13:27:17 +00:00
Cuong Manh Le
5f1df260a9 cmd/compile: allow export/import OSLICE2ARRPTR
Updates #395
Fixes #45665

Change-Id: Iaf053c0439a573e9193d40942fbdb22ac3b4d3bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/312070
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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2021-04-21 09:07:09 +00:00
Cuong Manh Le
7735ec96c1 cmd/compile: remove ir.OSTMTEXPR op
It is not used anywhere.

Change-Id: I2b8d64902e16893ab5e1b84943f6d865c6e9c7bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/311950
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 09:07:02 +00:00
Cuong Manh Le
acf1b46de5 cmd/compile: update ir.Node ops comments
After Russquake, all the Node ops now have different structure, update
comment to reflect that.

Change-Id: I43f859783cda457528ae4d2da9857f2cc0438b62
Reviewed-on: https://go-review.googlesource.com/c/go/+/311949
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-21 08:46:51 +00:00
Bryan C. Mills
f53c2fac46 cmd/go/internal/modload: in newRequirements, verify that rootModules is sorted
The comment for the Requirements.rootModules field requires that it be
"sorted and capped to length". I noticed that we were not capping it
correctly — we were capping the local variable (the rorotModules
argument itself) but not the struct field. That prompted me to
question whether we were also at some point failing to sort it
correctly, so I decided to add an explicit check.

With the explicit check, all tests continue to pass.

For #36460

Change-Id: I6687de8ef8ecc5129fa8810d678e5673752fd27b
Reviewed-on: https://go-review.googlesource.com/c/go/+/310790
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-21 04:27:01 +00:00
Bryan C. Mills
69c94ad55f cmd/go/internal/modload: split updateRoots into separate functions for updating and tidying
In CL 293689, I fused the mvs.Reqs calls that were formerly in MinReqs
and TidyBuildList into a single function, updateRoots, in the hope
that it expressed a fundamental operation. As I have been working on
the lazy equivalents, I have come to realize that these functions are
deeply related but fundamentally different.

In order to help me reason about the two different roles, I am making
the two functions separate once more, but leaving them colocated in
the code.

For #36460

Change-Id: I851d6d81fbfd84f39411e0d076ee72a9909c60ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/310629
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 04:26:11 +00:00
Bryan C. Mills
81fcb18df5 cmd/go: make Tidy an option in PackageOpts rather than a separate call
This eliminates some awkwardly-stateful outside calls to
modload.{Disallow,Allow,}WriteGoMod.

Perhaps more importantly, it gives the loader the opportunity to
reload packages and revise dependencies after the tidied requirements
are computed. With lazy loading, dropping an irrelevant requirement
from the main module's go.mod file may (rarely) cause other test
dependencies for packages outside the main module to become
unresolved, which may require the loader to re-resolve those
dependencies, which may in turn add new roots and increase the
selected versions of modules providing other packages.

This refactoring allows the loader to iterate between tidying the
build list and reloading packages as needed, making the exact
sequencing of loading and tidying an implementation detail of the
modload package.

For #36460
For #40775

Change-Id: Ib6da3672f32153d5bd7d653d85e3672ab96cbe36
Reviewed-on: https://go-review.googlesource.com/c/go/+/310181
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-21 04:23:52 +00:00
Ian Lance Taylor
c33ced6d8a runtime: don't test sig.inuse in sigsend
Signals can be delivered on a different thread. There is no necessary
happens-before relationship between setting sig.inuse in signal_enable
and checking it in sigsend. It is theoretically possible, if unlikely,
that sig.inuse is set by thread 1, thread 2 receives a signal, does not
see that sig.inuse is set, and discards the signal. This could happen
if the signal is received immediately after the first call to signal_enable.

For #33174

Change-Id: Idb0f1c77847b7d4d418bd139e801c0c4460531d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/312131
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-04-21 02:39:25 +00:00
Robert Griesemer
190cb937f7 cmd/compile/internal/types2: fix type inference
Don't let type parameters that are not filled in with concrete
type arguments escape from constraint type inference - such
inferred types are not "real".

While at it, implement a tparamsList.String method for debugging.

Fixes #45548.

Change-Id: I40f13ff7af08d0357a5c66234bfcdd0b7ed5fdd6
Reviewed-on: https://go-review.googlesource.com/c/go/+/311651
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-21 01:45:15 +00:00
Josh Bleecher Snyder
760d3b2a16 reflect: allow conversion from slice to array ptr
Note that this removes an invariant:

v.Type().ConvertibleTo(t) might return true,
yet v.Convert(t) might panic nevertheless.

This is a fairly unavoidable consequence of the decision
to add the first-ever conversion that can panic.

ConvertibleTo describes a relationship between types,
but whether the conversion panics now depends on the value,
not just the type.

If this turns out to be a problem, we can add v.ConvertibleTo(t),
or something similar, to allow callers to avoid the panic.

This is the last of the changes needed to complete the implementation.

Fixes #395

Change-Id: I79b7e4dd87a67a47723e00a65d0b1ac6090371b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/301652
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2021-04-21 00:54:39 +00:00
Josh Bleecher Snyder
c18744377a go/types: allow conversion from slice to array ptr
These match the changes to cmd/compile/internal/types2 in CL 301650.

Updates #395

Change-Id: I1e85b6355c8c8fdba0996c26a2505c65fab908d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/301651
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2021-04-21 00:54:01 +00:00
Josh Bleecher Snyder
faa4fa1a6e cmd/compile: allow conversion from slice to array ptr
Panic if the slice is too short.

Updates #395

Change-Id: I90f4bff2da5d8f3148ba06d2482084f32b25c29a
Reviewed-on: https://go-review.googlesource.com/c/go/+/301650
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2021-04-21 00:53:48 +00:00
Josh Bleecher Snyder
1c268431f4 spec: allow conversion from slice to array ptr
Implementation follows in subsequent changes.

Updates #395

Change-Id: Ic97ee822805e4c236fdd9d224e776cb2ae62c817
Reviewed-on: https://go-review.googlesource.com/c/go/+/216424
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2021-04-20 23:47:34 +00:00
Keith Randall
e12b0afa54 cmd/compile: separate out parameter and field export encoding
These two types of *types.Field encode different concepts, so we
encode them separately (and ignore fields that don't matter for
each concept).

Change-Id: I9d1608413949a109f12a3ebd52cd7af5f476e415
Reviewed-on: https://go-review.googlesource.com/c/go/+/312130
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2021-04-20 23:41:54 +00:00
Ian Lance Taylor
48e3d92454 Revert "runtime: implement runqdrain() for GC mark worker goroutines"
This reverts CL 310149.

Reason for revert: Breaks longtest builders:

https://build.golang.org/log/6af9fb147fa3101154db10e7ce055e8267cd4c93
https://build.golang.org/log/172ed6e1ec3bb503370333ee421c590fd2a72d0a

Change-Id: Iaf5a8b9eec51d0517311e050d0b0f7569759d292
Reviewed-on: https://go-review.googlesource.com/c/go/+/312129
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2021-04-20 22:47:50 +00:00
Keith Randall
c7d708e42e cmd/compile: pass struct field note information along in exported info
This is needed to make field tracking work correctly.

Change-Id: I0c3452a48d6f36862f6ee8aacc001813866c0ad4
Reviewed-on: https://go-review.googlesource.com/c/go/+/312069
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2021-04-20 22:39:22 +00:00
Cherry Zhang
f448cb8ba8 cmd/compile: use f.Nname.Type() in makeABIWrapper
Apparently, f.Nname.Ntype.Type() doesn't work with types2, as it
doesn't set Ntype, unlike the old type checker. f.Nname.Type()
works for both.

Change-Id: I6fa8a81c9fc7b65e008d9f158b88f0d56d84c3ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/312089
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2021-04-20 21:59:20 +00:00
Tobias Klauser
57b0d838ed net: pass MSG_CMSG_CLOEXEC in ReadMsgUnix on dragonfly, netbsd and openbsd
Add support for passing MSG_CMSG_CLOEXEC to the recvmsg syscall on
dragonfly, netbsd and openbsd. MSG_CMSG_CLOEXEC on freebsd is currently
broken, see https://reviews.freebsd.org/D29328.

Change-Id: Ie4c6e3cb550cd0ae32a1c2acca12edf77569e96a
Reviewed-on: https://go-review.googlesource.com/c/go/+/311570
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2021-04-20 21:00:46 +00:00
Tobias Klauser
3f8e64878a internal/poll, net: fix comments regarding accept and sysSocket
The implementation of accept was moved from package net to internal/poll
in CL 36799.

Change-Id: I6e5964e0ee22e9c84bc444860cdd497817451fec
Reviewed-on: https://go-review.googlesource.com/c/go/+/311571
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2021-04-20 21:00:32 +00:00
Michael Pratt
dbade774c3 runtime: refactor findrunnable spinning recheck
Break the main components of the findrunnable spinning -> non-spinning
recheck out into their own functions, which simplifies both findrunnable
and the new functions, which can make use of fancy features like early
returns.

This CL should have no functional changes.

For #43997
For #44313

Change-Id: I6d3060fcecda9920a3471ff338f73d53b1d848a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/307914
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2021-04-20 20:58:52 +00:00
Jinzhu
7473a6a0eb reflect: fix stack overflow panic when using haveIdenticalUnderlyingType
haveIdenticalUnderlyingType raises stack overflow when compares
self-referential structs having same structure in different packages.

Change-Id: I7c79ab988edcffadcf7e0730a50b4d31b136bb6a
GitHub-Last-Rev: 4d4217f0c1
GitHub-Pull-Request: golang/go#45543
Reviewed-on: https://go-review.googlesource.com/c/go/+/309729
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2021-04-20 20:14:14 +00:00
Andy Pan
fbb600b283 runtime: implement runqdrain() for GC mark worker goroutines
Change-Id: Ida44a2e07f277bee8806538ecee4beee3474cf3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/310149
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2021-04-20 19:48:29 +00:00
Cherry Zhang
77860ad280 cmd/compile: guard partially live arg spilling with number of registers
The code that does partially live in-register arg spilling is
currently guarded with GOEXPERIMENT=regabiargs. But on platforms
where GOEXPERIMENT=regabiargs is not enabled there are still tests
that use register args. Guard it with actual number of registers
used, so it covers both.

Should fix the freeBSD builder.

Change-Id: I0d3c49d7a2389096cb6b17ca35b9b4ce567bc91e
Reviewed-on: https://go-review.googlesource.com/c/go/+/311830
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2021-04-20 18:34:56 +00:00
Cherry Zhang
109d7580a5 cmd/compile: disable name preservation on copies in expand_calls
Apparently CL 309330 caused the compiler OOMing on some large
input (giant generated switch statement). I don't quite understand
it for now. Disable it for now.

Change-Id: I19c84f3f5e158897bff0b32d6217fcff3c66874d
Reviewed-on: https://go-review.googlesource.com/c/go/+/311829
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2021-04-20 16:44:18 +00:00
Michael Pratt
60ab197bc2 runtime: refactor work stealing to dedicated function
findrunnable has grown very large and hard to follow over the years.
Parts we can split out into logical chunks should help make it more
understandable and easier to change in the future.

The work stealing loop is one such big chunk that is fairly trivial to
split out into its own function, and even has the advantage of
simplifying control flow by removing a goto around work stealing.

This CL should have no functional changes.

For #43997.
For #44313.

Change-Id: Ie69670c7bc60bd6c114e860184918717829adb22
Reviewed-on: https://go-review.googlesource.com/c/go/+/307913
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2021-04-20 16:00:27 +00:00
Austin Clements
9dd71ba913 internal/buildcfg: enable regabiargs by default
For #40724.

Change-Id: I7509668478d20dd625f210e5a33f5d896a76d6b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/310176
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2021-04-20 15:45:02 +00:00
Rob Findley
24875e3880 cmd/compile/internal/types2: fix some typos in rawLookupFieldOrMethod
Change-Id: Ibc04a82b1d618deeb9bc168ba518dbf1d752fba7
Reviewed-on: https://go-review.googlesource.com/c/go/+/311456
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2021-04-20 15:14:05 +00:00