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55419 Commits

Author SHA1 Message Date
Archana R
cd1fc87156 cmd/compile: intrinsify math/bits/ReverseBytes{16|32|64} for ppc64/power10
This change intrinsifies ReverseBytes{16|32|64} by generating the
corresponding new instructions in Power10: brh, brd and brw and
adds a verification test for the same.
On Power 9 and 8, the .go code performs optimally as it is.

Performance improvement seen on Power10:
ReverseBytes32  1.38ns ± 0%  1.18ns ± 0%  -14.2
ReverseBytes64  1.52ns ± 0%  1.11ns ± 0%  -26.87
ReverseBytes16  1.41ns ± 1%  1.18ns ± 0%  -16.47

Change-Id: I88f127f3ab9ba24a772becc21ad90acfba324b37
Reviewed-on: https://go-review.googlesource.com/c/go/+/446675
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2023-02-03 19:01:06 +00:00
Ian Lance Taylor
a96487613e maps: new package
This copies x/exp/maps into the standard library (except for the Clear
function which is now available as the clear builtin.)

Fixes #57436

Change-Id: I30dd470c2f7ae34c7c82b4c1025a7582d61fabaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/464343
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Eli Bendersky <eliben@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-02-03 18:22:53 +00:00
Bryan C. Mills
10643b744d cmd/dist: do not include runtime/internal/sys in cmd staleness checks
Since CL 454836, cmd/dist has built the packages in 'cmd' with
different settings than those in 'std': namely, for' cmd' we disable
the use of cgo, and (since CL 463740) if GO_BUILDER_NAME is non-empty
or the VERSION file indicates a release version we also set
GOFLAGS=-trimpath.

However, since at least CL 73212 the staleness checks performed by
cmd/dist for the “toolchain” targets (a subset of 'cmd') have included
the package "runtime/internal/sys" (which is in 'std', not 'cmd').
At that time, cmd/go did not have a separate build cache, so it would
not have been possible to check staleness for a 'cmd' build differently
from 'std'. However, now that is possible, and most of the time
"runtime/internal/sys" lives *only* in the build cache (and so is
essentially never stale after building anything that imports it).

But there is one more wrinkle: if GODEBUG=installgoroot=all is set,
the packages in 'std' are still installed to GOROOT/pkg, and can once
again become stale. Since the install with the 'std' configuration does
not match the configuration used to build 'cmd', the staleness check
fails for "runtime/internal/sys" under the 'cmd' configuration.

Since we intentionally build the toolchain with a different
"runtime/internal/sys" stored only in the build cache, there is no
longer a point in checking that package for staleness: if it is stale,
then the toolchain itself will be reported as stale anyway.
So we can simply remove the package from that staleness check,
and unbreak bootstrapping with GODEBUG=installgoroot=all.

I tested this manually using the sequence:

	export GODEBUG=installgoroot=all
	export GO_BUILDER_NAME=linux-amd64-bcmills
	./make.bash

It fails the staleness check before this change, and successfully
builds after.

For #24904.

Change-Id: I376e93e35129694a093c6675e20905a097a8b64b
Reviewed-on: https://go-review.googlesource.com/c/go/+/465155
Reviewed-by: Russ Cox <rsc@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2023-02-03 16:52:25 +00:00
Roger Peppe
2f2c5e41e7 cmd/go/internal/par: use generic Cache
Using generics here makes the code easier to understand,
as the contract is clearly specified. It also makes the
code a little more concise, as it's easy to write a wrapper
for the cache that adds an error value, meaning that
a bunch of auxilliary types no longer need to be defined
for this common case.

The load.cachingRepo code has been changed to use a separate
cache for each key-value type combination, which seems a bit less
sleazy, but might have some knock-on effect on memory usage,
and could easily be changed back if desired.

Because there's no longer an unambiguous way to find out
whether there's an entry in the cache, the Cache.Get method
now returns a bool as well as the value itself.

Change-Id: I28443125bab0b3720cc95d750e72d28e9b96257d
Reviewed-on: https://go-review.googlesource.com/c/go/+/463843
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: roger peppe <rogpeppe@gmail.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2023-02-03 09:56:24 +00:00
Florin Papa
9222a01e65 debug/elf: add DT_FLAGS_1 constants
Add constants for all ELF dynamic flags (pertaining to DT_FLAGS_1). This will help, for example, determining whether an object is a position-independent executable (PIE). The constants are defined according to Table 15-10 in https://docs.oracle.com/en/operating-systems/solaris/oracle-solaris/11.4/linkers-libraries/dynamic-section.html.

Fixes #56887

Change-Id: I6cd501af50d9dbcc2aa8a9a002e12c6fb6726761
Reviewed-on: https://go-review.googlesource.com/c/go/+/452496
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
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2023-02-03 04:37:17 +00:00
Robert Griesemer
93f5335be9 go/types, types2: enable new type inference
Enable new type inference and compare result with old inference
implementation - the result must be identical in a correct program.

Change-Id: Ic802d29fcee744f6f826d5e433a3d0c0e73b68e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/464341
Auto-Submit: Robert Griesemer <gri@google.com>
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2023-02-02 23:40:14 +00:00
Robert Griesemer
683b2c4600 go/types, types2: implement simpler type inference (infer2)
This change implements infer2 which is a drop-in replacement for
infer; it can be enabled by setting the useNewTypeInference flag
in infer2.go. It is currently disabled (but tested manually).

infer2 uses the same machinery like infer but in a simpler approach
that is more amenable to precise description and future extensions.

The goal of type inference is to determine a set of (missing) type
arguments from a set of other given facts. Currently, these other
facts are function arguments and type constraints.

In the following, when we refer to "type parameters", we mean the
type parameters defined by the generic function to which we apply
type inference. More precisely, in the algorithm, these are the
type parameters recorded with the unifier.

The approach is as follows:

- A single unifier is set up which tracks all type parameters and
  corresponding inferred types.

- The unifier is then fed all the facts we have. The order is not
  relevant (*) except that we use default types of untyped constant
  arguments only as a last resort, at the end.

- We start with all function arguments: for each generic function
  parameter with a typed function argument, we unify the parameter
  and function type.

- We then unify each type parameter with its type constraint.
  This step is iterated until nothing changes anymore, because
  each unification may enable further unification.

- If there are any type parameters left without inferred types,
  and which are used as function parameters with untyped constant
  arguments, unify them with the default types of those arguments.

Because of unification with constraints which themselves may contain
type parameters, inferred types may contain type parameters. Thus,
in a final step we substitute type parameters for their inferred types
until there are no type parameters left in the inferred types.

All these individual steps are the same as in infer, but there is no
need to do constraint type inference twice (all the facts have already
been used for inference). Also, we only need a single unifier which
serves as the holder for the inferred type parameter types.

Type inference fails if any unification step fails or if not all
type arguments could be inferred. By always using all available
facts (**) we ensure that order doesn't matter.

By using more facts, type inference can now be extended to become
more powerful.

The code can be split up into smaller components that are more
easily digestable. Because we forsee more simplifications, we
defer such cleanups to later CLs.

(*) We currently have a sorting phase in the beginning such that
    function argument types that are named types are used before
    any other type. We believe this step can be eliminated by
    modifying the unifier slightly.

(**) When unifying constraints, in some cases we don't report
    an error if unification fails. We believe we can modify the
    unifier and then consistently report an inference failure
    in this case as well.

Change-Id: If1640a5461bc102fa7fd31dc6e741be667c97e7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/463746
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
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2023-02-02 23:40:12 +00:00
Robert Griesemer
331f0c6976 go/types, types2: simplify symmetric code
Because unification is symmetric, in cases where we have symmetric
code for x and y depending on some property we can swap x and y as
needed and simplify the code.

Also, change u.depth increment/decrement position for slightly
nicer tracing ooutput.

Change-Id: I2e84570d463d1c32f6556108f3cb54062b57c718
Reviewed-on: https://go-review.googlesource.com/c/go/+/464896
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Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
2023-02-02 23:39:53 +00:00
Robert Griesemer
3313880bdc go/types, types2: use a comparer struct to control the identical predicate
This makes it easier to configure the behavior of identical: we can
simply add fields to the comparer instead of adding more parameters
to identical.

Change-Id: I9a6f5451b3ee5c37e71486060653c5a6e8f24304
Reviewed-on: https://go-review.googlesource.com/c/go/+/464937
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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2023-02-02 23:39:19 +00:00
Bryan C. Mills
88a36c9e9a cmd/go/internal/test: scale the WaitDelay for test subprocesses
Prior to CL 456116 we had an arbitrary 5-second delay after a test
times out before we kill the test. In CL 456116, I reused that
arbitrary 5-second delay as the WaitDelay as well, but on slower
builders it does not seem to be generous enough.

Instead of hard-coding the delay, for tests with a finite timout we
now use a hard-coded fraction of the overall timeout. That will
probably give delays that are longer than strictly necessary for very
long timeouts, but if the user is willing to wait for a very long
timeout they can probably wait a little longer for I/O too.

Fixes #58230.
Updates #24050.

Change-Id: Ifbf3e576c034c721aa00cd17bf88563474b09955
Reviewed-on: https://go-review.googlesource.com/c/go/+/464555
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-02-02 20:23:27 +00:00
Bryan C. Mills
fc86770d87 runtime: eliminate arbitrary timeout in TestCgoLockOSThreadExit
This test previously failed if running a new pthread took longer than
a hard-coded 100ms. On some slow or heavily-loaded builders, that
scheduling latency is too short.

Since the point of this test is to verify that the background thread
is not reused after it terminates (see #20395), the arbitrary time
limit does not seem helpful: if the background thread fails to
terminate the test will time out on its own, and if the main goroutine
is scheduled on the background thread the test will fail regardless of
how long it takes.

Fixes #58247.

Change-Id: I626af52aac55af7a4c0e7829798573c479750c20
Reviewed-on: https://go-review.googlesource.com/c/go/+/464735
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
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2023-02-02 20:21:33 +00:00
Alan Donovan
fcd0e0963f math/big: add Int.Float64 conversion
This operation converts a big.Int to float64,
reporting the accuracy of the result, with
a fast path in hardware.

Fixes #56984

Change-Id: I86d0fb0e105a06a4009986f2f5fd87a4d446f6f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/453115
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Alan Donovan <adonovan@google.com>
2023-02-02 19:39:34 +00:00
Bryan C. Mills
4b43d668c2 internal/testenv: avoid rebuilding all of std in WriteImportcfg
Instead, have the caller pass in an explicit list of the packages
(if any) they need.

After #47257, a builder running a test does not necessarily have the
entire standard library already cached, especially when running tests
in sharded mode. testenv.WriteImportcfg used to write an importcfg for
the entire standard library — which required rebuilding the entire
standard library — even though most tests need only a tiny subset.

This reduces the time to test internal/abi with a cold build cache on
my workstation from ~16s to ~0.05s.

It somewhat increases the time for 'go test go/internal/gcimporter'
with a cold cache, from ~43s to ~54s, presumably due to decreased
parallelism in rebuilding the standard library and increased overhead
in re-resolving the import map. However, 'go test -short' running time
remains stable (~5.5s before and after).

Fixes #58248.

Change-Id: I9be6b61ae6e28b75b53af85207c281bb93b9346f
Reviewed-on: https://go-review.googlesource.com/c/go/+/464736
Run-TryBot: Bryan Mills <bcmills@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
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2023-02-02 19:27:33 +00:00
Alan Donovan
18772915a1 go/token: add (*File).Lines method
This method returns the array updated by SetLines, for
use in exporter packages.

Fixes #57708

Change-Id: I12ed5e7e1bae7517f40cb25e76e51997c25d84f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/464515
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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2023-02-02 16:40:29 +00:00
Alan Donovan
cb3c50db22 src/cmd/compile: clarify //go:linkname documentation
Change-Id: I0407950bfc84082683012944b2051e46dc682ba0
Reviewed-on: https://go-review.googlesource.com/c/go/+/463136
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Alan Donovan <adonovan@google.com>
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2023-02-02 16:02:34 +00:00
Joe Tsai
3693fd255f net/netip: fix invalid representation of Prefix
For a given Addr, ensure there is exactly one invalid representation.
This allows invalid representations to be safely comparable.
To ensure that the zero value of Prefix is invalid,
we modify the encoding of bits to simply be the bit count plus one.

Since Addr is immutable, we check in the PrefixFrom constructor that
the provided Addr is valid and only store a non-zero bits length if so.
IsValid is simplified to just checking whether bitsPlusOne is non-zero.

Fixes #54525

Change-Id: I9244cae2fd160cc9c81d007866992df2e422d3b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/425035
Run-TryBot: Joseph Tsai <joetsai@digital-static.net>
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2023-02-02 15:37:19 +00:00
Johan Brandhorst-Satzkorn
53372ab279 misc: increase node stack size
The default NodeJS V8 stack size is 984K, which is not enough to run
the regexp or go/parser tests. This commit increases the stack size
to 8192K, which removes the stack size limit error.

Fixes #56498
Fixes #57614

Change-Id: I357885d420daf259187403deab25ff587defa0fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/463994
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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2023-02-02 15:35:28 +00:00
Tobias Klauser
3c529c5367 internal/poll: use atomic.Bool in DupCloseOnExec
Invert the meaning of the var to make use of the zero value.

Change-Id: If18db09896a67cb37cb3fe7dc0fb3493c6050a87
Reviewed-on: https://go-review.googlesource.com/c/go/+/463847
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2023-02-02 15:35:04 +00:00
Russ Cox
2a3c695c4b cmd/link: remove special cases for relocations in .go.buildinfo
.go.buildinfo has no relocations anymore, as of Go 1.18.

Change-Id: I98369c6a0ef07ada770eaa12f6f56c210e812abc
Reviewed-on: https://go-review.googlesource.com/c/go/+/464436
Run-TryBot: Russ Cox <rsc@golang.org>
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2023-02-02 15:18:00 +00:00
Russ Cox
54bdb8ee70 cmd/link: keep go.buildinfo even with --gc-sections
If you use an external linker with --gc-sections, nothing refers
to .go.buildinfo, so the section is deleted, which in turns makes
'go version' fail on the binary. It is important for vulnerability
scanning and the like to be able to run 'go version' on any binary.

Fix this by inserting a reference to .go.buildinfo from the rodata
section, which will not be GC'ed.

Fixes #58222.

Change-Id: I1e13e9464acaf2f5cc5e0b70476fa52b43651123
Reviewed-on: https://go-review.googlesource.com/c/go/+/464435
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2023-02-02 15:17:57 +00:00
Robert Griesemer
d871f63bcf go/types, types2: avoid recursive invocation when unifying underlying types
There's no need to invoke unifier.nify recursively when we decide to
unify underlying types. Just update the respective type variable and
continue.

Change-Id: I3abe335464786dc509d18651dff14b20022c7d63
Reviewed-on: https://go-review.googlesource.com/c/go/+/464347
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2023-02-02 14:52:39 +00:00
Robert Griesemer
756a8ac91a go/types, types2: remove (internal) exactUnification flag
Neither infer nor infer2 will correctly work if we require
exact unification. Remove the flag and simplify the respective
code.

Change-Id: I329f207f72b6d97fa076f27275481b754e55fecf
Reviewed-on: https://go-review.googlesource.com/c/go/+/464346
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2023-02-02 14:31:09 +00:00
Matthew Dempsky
40a0986959 cmd/compile/internal/types: remove misleading comment
The runtime's knowledge of these constants was removed in CL 261364.

Change-Id: I65e5a5ab084c6301eee1c9791bc76df9b824e466
Reviewed-on: https://go-review.googlesource.com/c/go/+/463754
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2023-02-01 22:45:14 +00:00
Robert Griesemer
6d4de4e386 go/types, types2: use go.dev/issue/nnnnn when referring to an issue (cleanup)
Follow-up on CL 462856 which missed a few places.
Fixed manually.

Change-Id: I924560ecae8923d9228027016805a3cc892f8ac2
Reviewed-on: https://go-review.googlesource.com/c/go/+/463749
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2023-02-01 21:31:01 +00:00
Robert Griesemer
07dca0fe14 go/types, types2: better error when trying to use ~ as bitwise operation
When coming from C, the bitwise integer complement (bitwise negation)
operator is ~, but in Go it is ^. Report an error mentioning ^ when
~ is used with an integer operand.

Background: Some articles on the web claim that Go doesn't have a
bitwise complement operator.

Change-Id: I41185cae4a70d528754e44f42c13c013ed91bf27
Reviewed-on: https://go-review.googlesource.com/c/go/+/463747
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2023-02-01 21:30:59 +00:00
Robert Griesemer
cda461bb79 go/types, types2: unifier constructor to accept type parameters and arguments
Change-Id: I2f20cb8f1dd95ba97de7630d0bbe6dee4e019f94
Reviewed-on: https://go-review.googlesource.com/c/go/+/463990
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2023-02-01 21:30:36 +00:00
Robert Griesemer
bd749504b8 go/types, types2: further simplify unification
Allocate all handles up-front: in a correct program, all type parameters
must be resolved and thus eventually will get a handle.
Also, sharing of handles caused by unified type parameters is rare and
so it's ok to not optimize for that case (and delay handle allocation).

This removes a (premature) optimization whis further simplifies
unification.

Change-Id: Ie1259b86ea5e966538667ab9557676e9be9f6364
Reviewed-on: https://go-review.googlesource.com/c/go/+/463989
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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2023-02-01 21:30:34 +00:00
Robert Griesemer
4b7f7eef3f go/types, types2: replace unifier type parameter list with a map
Further simplify the unifier by using a mapping from type parameter
to type (argument) handle, where a handle is just an indirection to
the actual type associated with the type parameter.

If multiple type parameters are "joined", i.e., share the same type
(argument), then they use the same handle. Thus, if one of the type
parameters gets a type, all type parameters sharing the same handle
get the same type.

The handles mapping replaces the indices list (mapping from type
parameter index to types index). Because each handle holds any
associated type directly, we also don't need a types list anymore.

We still keep the incoming type parameter list to maintain the same
order for printing and reporting inferred types. We may be able to
eliminate this list as well in future CLs.

Change-Id: I389527dbb325b828c91050e59902ae546c3d0347
Reviewed-on: https://go-review.googlesource.com/c/go/+/463228
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2023-02-01 21:30:29 +00:00
Roger Peppe
dd44d981db cmd/go/internal/par: generic Work
This makes the mvs code slightly clearer.

Change-Id: Idefc36bd1066f0348a70e7c91c37a0d56f3c02d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/463844
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2023-02-01 20:28:59 +00:00
Bryan C. Mills
ab0f0459da cmd/dist,internal/platform: reenable the c-archive build mode on ios
Also fix misc/cgo/testcarchive to provide a missing CoreFoundation
dependency at link time.

Fixes #58221.
Updates #58172.
Updates #58225.

Change-Id: Ib8b6e52ed2914596615da4c427df2fe984722de6
Reviewed-on: https://go-review.googlesource.com/c/go/+/463752
Run-TryBot: Bryan Mills <bcmills@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-02-01 19:47:35 +00:00
Keith Randall
6224db9b4d cmd/compile: schedule values with no in-block uses later
When scheduling a block, deprioritize values whose results aren't used
until subsequent blocks.

For #58166, this has the effect of pushing the induction variable increment
to the end of the block, past all the other uses of the pre-incremented value.

Do this only with optimizations on. Debuggers have a preference for values
in source code order, which this CL can degrade.

Fixes #58166
Fixes #57976

Change-Id: I40d5885c661b142443c6d4702294c8abe8026c4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/463751
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Reviewed-by: David Chase <drchase@google.com>
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2023-02-01 18:41:07 +00:00
Johan Brandhorst-Satzkorn
c846964df5 crypto/rand: batch large random reads on js
CL 463975 replaced the use of the NodeJS crypto.randomFillSync API
with a direct call to crypto.getRandomValues. This function rejects
any requests to fill a buffer larger than 65536 bytes, so we need to
batch reads larger than this size. This reuses the batching
functions used on other platforms to perform this batching.

Fixes #58145

Change-Id: Ic0acf3be7c9e994bc345d6614867c9b0c47bd26d
Reviewed-on: https://go-review.googlesource.com/c/go/+/463993
Reviewed-by: Roland Shoemaker <roland@golang.org>
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2023-02-01 16:56:49 +00:00
Bryan C. Mills
6e668267ac net/http: remove another arbitrary timeout in TestTLSHandshakeTimeout
Updates #37327

Change-Id: I87774be71ed54e9c45a27062122e6177888e890a
Reviewed-on: https://go-review.googlesource.com/c/go/+/226137
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2023-02-01 16:24:24 +00:00
qmuntal
38d1a6665f syscall: regenerate zsyscall_windows.go
This CL regenerates zsyscall_windows.go, which was incorrectly
hand-edited in CL 463842.

Change-Id: Id556e69a282b2291a0b293b276ed4b9e0aeec105
Reviewed-on: https://go-review.googlesource.com/c/go/+/463848
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2023-02-01 15:42:47 +00:00
Cuong Manh Le
4fe46cee4e builtin: add documentation for clear
Updates #56351

Change-Id: I7b1dd29e60f71d804a6d9cba3377e28c3a5b964e
Reviewed-on: https://go-review.googlesource.com/c/go/+/462935
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Rob Pike <r@golang.org>
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2023-02-01 15:21:00 +00:00
Ian Lance Taylor
56a14ad4bc cmd/dist, internal/platform: remove some target modes that fail
Before CL 463992 there were some cases that cmd/dist did not test
but that platform.BuildModeSupport permitted. In CL 463992 those
conflicts were resolved in favor of platform.BuildModeSupport.
However, further testing has uncovered some cases that do not in
fact work. Adjust those in both cmd/dist and internal/platform.

In particular, mark android-arm and android-arm64 as not supporting
plugin mode.  Sample failure:
    https://build.golang.org/log/ebba858ea9f94f076966d8cfd42348a0e9345095

Mark ios as not supporting c-archive mode.  Sample failure:
    https://build.golang.org/log/e78a58189d94b90dc6d4b2e01a1b4a0b35d63792

Fixes #58170
Fixes #58172

Change-Id: Ic1bd18e36382cac0779aad48cb6e7b1de8eeb10d
Reviewed-on: https://go-review.googlesource.com/c/go/+/464339
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2023-02-01 10:06:08 +00:00
Bryan C. Mills
23c0121e4e cmd/go/internal/script: retry ETXTBSY errors in scripts
Fixes #58019.

Change-Id: Ib25d668bfede6e87a3786f44bdc0db1027e3ebec
Reviewed-on: https://go-review.googlesource.com/c/go/+/463748
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2023-01-31 23:29:56 +00:00
Tobias Klauser
356647409d net/netip: use IPv6Loopback in TestIPProperties
Change-Id: I667bdaf52e9d32cd89e396616057bc57ecaffe09
Reviewed-on: https://go-review.googlesource.com/c/go/+/463836
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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2023-01-31 23:15:12 +00:00
Mateusz Poliwczak
2e71489ed1 net: use net/netip for address parsing
Fixes #58098

Change-Id: I6ef963ba2c110215b8eda763cbfb258a25c8199a
GitHub-Last-Rev: 3d22f076b7
GitHub-Pull-Request: golang/go#58143
Reviewed-on: https://go-review.googlesource.com/c/go/+/463987
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2023-01-31 22:29:57 +00:00
qmuntal
a17d959deb runtime: always use LoadLibraryEx to load system libraries
This CL removes a fallback that used LoadLibraryA when the runtime
was loading system DLLs on Windows 7, Windows Server 2008 R2,
or earlier.

We can safely remove that fallback now, as go1.21 will require at least
Windows 8 or Server 2012.

This CL also saves some syscall initialization time and bytes:

new:
    init syscall @2.3 ms, 0 ms clock, 1000 bytes, 18 allocs
old:
    init syscall @3.6 ms, 0.52 ms clock, 1744 bytes, 24 allocs

Updates #57003

Change-Id: I7dcc1173537785b6b580e9f78632c0c74da658d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/463842
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2023-01-31 22:06:41 +00:00
Bryan Mills
34d026862d Revert "net: move context cancellation logic of blocking calls to a common function."
This reverts CL 463231.

Reason for revert: introduced a data race on darwin.

Fixes #58169.

Change-Id: I35f02273db38c257369c166547bb4945f92fdc3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/464375
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2023-01-31 22:04:11 +00:00
Cuong Manh Le
ac7efcb0ca test: enable inlining tests for functions with local type
Updates #57410

Change-Id: Ibe1f5523a4635d2b844b9a5db94514e07eb0bc0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/463998
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2023-01-31 20:36:55 +00:00
Cuong Manh Le
3e1478ef0d cmd/compile: cleanup atomic.Pointer[T] inline test
Updates #57410

Change-Id: I9be38e20c6b83d14f7785049a66de77ac7ecdf15
Reviewed-on: https://go-review.googlesource.com/c/go/+/463997
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2023-01-31 20:36:13 +00:00
Bryan C. Mills
f36c7c5983 cmd/go: traverse module-root symlinks in Walk calls
fsys.Walk, like filepath.Walk, avoids traversing symlinks. Also like
filepath.Walk, it follows a symlink at the root if the root path ends
in a file separator (consistent with POSIX pathname resolution¹).

If the user's working directory is within a repository stored in
(and symlinked to) a different filesystem path, we want to follow the
symlink instead of treating the module as completely empty.

¹https://pubs.opengroup.org/onlinepubs/9699919799.2013edition/basedefs/V1_chap04.html#tag_04_12

Fixes #50807.
Updates #57754.

Change-Id: Idaf6168dfffafe879e05b4ded5fda287fcd3eeec
Reviewed-on: https://go-review.googlesource.com/c/go/+/463179
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2023-01-31 20:33:05 +00:00
Bryan C. Mills
5f00ce8633 cmd/go: use Join functions instead of adding path separators to strings
Adding a file path separator is incorrect for a file path that may be
the root directory on a Unix platform (such as in a container or
chroot).

Adding a path separator is incorrect for a package path prefix that
may be the empty string (as in the "std" module in GOROOT/src).

And in both cases, a Join function is arguably clearer and simpler
anyway.

Fixes #51506 (maybe).

Change-Id: Id816930811ad5e4d1fbd206cddf219ecd4ad39a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/463178
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2023-01-31 20:33:02 +00:00
Mateusz Poliwczak
de2efc2aa1 net: report IsNotFound when getnameinfo returns EAI_NONAME
Fixes #57548

Change-Id: I4092624b1e906fbcd520f43aa4bc71c144dea3b6
GitHub-Last-Rev: ab04835947
GitHub-Pull-Request: golang/go#57549
Reviewed-on: https://go-review.googlesource.com/c/go/+/460255
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2023-01-31 20:21:00 +00:00
Cherry Mui
780db9a63d cmd/link: add debug print in hostobjCopy
In external linking mode, when the external linker fails to handle
something in a host object file, it usually reports the name of
the host object which is a copied file named 000NNN.o. This is
often not helpful to determine what file it is. Add some debug
print so at least in -v mode it is more helpful.

Change-Id: Ibe762bff6a25640d16ee0dc082736ba5161b7522
Reviewed-on: https://go-review.googlesource.com/c/go/+/458735
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2023-01-31 19:45:12 +00:00
Cherry Mui
08425feae5 runtime/cgo: remove APPLE macros on 386, arm, and ppc64 assembly files
We don't support Apple platform on 386, ARM, or PPC64. Remove
dead code.

Change-Id: I5722bf58c0fb73c5db4ba016cb424e392739c7de
Reviewed-on: https://go-review.googlesource.com/c/go/+/455162
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2023-01-31 19:44:32 +00:00
Cuong Manh Le
b89a840d65 cmd/compile: add clear(x) builtin
To clear map, and zero content of slice.

Updates #56351

Change-Id: I5f81dfbc465500f5acadaf2c6beb9b5f0d2c4045
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2023-01-31 19:43:07 +00:00
Bryan C. Mills
bb4ea80bef os: allow $HOME to not exist in TestUserHomeDir
This seems like a cleaner fix for the situation Debian has patched
around with
https://sources.debian.org/patches/golang-1.19/1.19.3-1/0001-Disable-test-for-UserHomeDir.patch/

Tested with 'GOCACHE=$(go env GOCACHE) HOME=/home/nobody go test os'.

Change-Id: I9fd00da38b86df2edfcd8cb87629e2875573903e
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2023-01-31 18:47:06 +00:00