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Commit Graph

61523 Commits

Author SHA1 Message Date
Paul E. Murphy
11a03bbbd7 cmd/link: fix TestTrampoline symbol name check on PPC64
CL 603736 added a check looking for a specific trampoline symbol
name. PPC64 uses a slightly different name for the trampoline,
update the test to accept both.

Change-Id: I177dadb25d82bc3ffeb7530d7ab865482d907d34
Reviewed-on: https://go-review.googlesource.com/c/go/+/621455
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Paul Murphy <murp@ibm.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2024-10-21 18:42:50 +00:00
Jes Cok
971ab11ee2 database/sql: rewrite Null[T].Value method, update doc for Null[T]
Update doc for Null[T] to clarify that T should be one of the types
accepted by driver.Value.

Modify the Value() method of Null[T]:
1) recognize T implementing driver.Valuer interface and invoke it.
2) use the DefaultParameterConverter to convert native types that
are not directly supported as driver.Value types.

Fixes #69728
Fixes #69837

Change-Id: Iba782c878b2bde168125f5390abf319b88424149
GitHub-Last-Rev: 3df182d23d
GitHub-Pull-Request: golang/go#69938
Reviewed-on: https://go-review.googlesource.com/c/go/+/620858
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-10-21 18:42:47 +00:00
Shuo Wang
b3a9bf1f62 cmd/compile: fix the typos in genericOps.go
Change-Id: I7ff869e21e67cf6a193f7a92bf7b05f047ee005c
GitHub-Last-Rev: bf01f58249
GitHub-Pull-Request: golang/go#69957
Reviewed-on: https://go-review.googlesource.com/c/go/+/620778
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-10-21 18:42:06 +00:00
qmuntal
67f662b291 internal/syscall/windows: set write access when O_TRUNC is used
Whenn O_TRUNC is set, Opentat ends up calling syscall.Ftruncate, which
needs write access. Make sure write access is not removed when O_TRUNC
and O_APPEND are both set.

Updates #67002.

Change-Id: Iccc470b7be3c62144318d6a707057504f3b74c97
Reviewed-on: https://go-review.googlesource.com/c/go/+/620576
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-10-21 18:32:52 +00:00
Ian Lance Taylor
813d9ea524 net: document ctx argument to ListenConfig.Listen/ListenPacket
Change-Id: I351b88276307c8d21e43b5b992b30b64996d129c
Reviewed-on: https://go-review.googlesource.com/c/go/+/620777
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Damien Neil <dneil@google.com>
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2024-10-21 18:16:19 +00:00
Cherry Mui
427d1a23ef cmd/link: on ELF, generate GNU build ID by default
On ELF, default to "-B gobuildid", so it generates GNU build ID
based on Go buildid by default.

Updates #41004.
Fixes #63934.
Fixes #68652.

Change-Id: I5619dfaa4eeb6575c52922ae1de3430b46e31db6
Reviewed-on: https://go-review.googlesource.com/c/go/+/618601
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Than McIntosh <thanm@golang.org>
2024-10-21 17:57:00 +00:00
Cherry Mui
00034fa796 cmd/internal/buildid: skip over GNU build ID from buildid computation
This is similar to CL 618597, but for GNU build ID on ELF. This
makes it possible to enable "-B gobuildid" by default on ELF.

Updates #41004.
For #63934.

Change-Id: I4e663a27a2f7824bce994c783fe6d9ce8d1a395a
Reviewed-on: https://go-review.googlesource.com/c/go/+/618600
Reviewed-by: Than McIntosh <thanm@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-10-21 17:56:51 +00:00
Cherry Mui
c15e589733 cmd/link: apply -B UUID to external linking on Mach-O
Currently, on Mach-O, the -B UUID setting is only applied in
internal linking mode, whereas in external linking mode the UUID
is always rewritten to a hash of Go build ID. This CL makes it
apply to external linking as well. This makes the behavior
consistent on both linkmodes, and also consistent with the -B
flag's behavior for GNU build ID on ELF.

Add tests.

Updates #68678.

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Change-Id: I276a5930e231141440cdba16e8812df28ac4237b
Reviewed-on: https://go-review.googlesource.com/c/go/+/618599
Reviewed-by: Than McIntosh <thanm@golang.org>
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2024-10-21 17:56:41 +00:00
Cherry Mui
6a4feb5644 cmd/link: on Mach-O, generate LC_UUID by default
On Mach-O, default to "-B gobuildid", so it generates the UUID
based on Go buildid by default.

Fixes #68678.

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Change-Id: I6c1a6bcafd8370a13174657e05d7d9620a8d4f12
Reviewed-on: https://go-review.googlesource.com/c/go/+/618598
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Than McIntosh <thanm@golang.org>
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2024-10-21 17:56:35 +00:00
Cherry Mui
0bb2183d45 cmd/internal/buildid: skip over Mach-O UUID from buildid computation
With the "-B gobuildid" linker option (which will be the default
on some platforms), the host build ID (GNU build ID, Mach-O UUID)
depends on the Go buildid. If the host build ID is included in the
Go buildid computation, it will lead to convergence problem for
the toolchain binaries. So ignore the host build ID in the buildid
computation.

This CL only handles Mach-O UUID. ELF GNU build ID will be handled
later.

For #68678.
For #63934.

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Change-Id: Ie8ff20402a1c6083246d25dea391140c75be40d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/618597
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-10-21 17:56:28 +00:00
Cherry Mui
f2d9f5ffca cmd/internal/macho: new package for handling mach-o files in toolchain
Currently the linker has some code handling and manipulating
Mach-O files. Specifically, it augments the debug/macho package
with file offset and length, so the content can be handled or
updated easily with the file.

Move this code to an internal package, so it can be used by other
part of the toolchain, e.g. buildid computation.

For #68678.

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Change-Id: I2311af0a06441b7fd887ca5c6ed9e6fc44670a16
Reviewed-on: https://go-review.googlesource.com/c/go/+/618596
Reviewed-by: Than McIntosh <thanm@golang.org>
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2024-10-21 17:56:21 +00:00
Cherry Mui
20ed603118 cmd/link: generate Mach-O UUID when -B flag is specified
Currently, on Mach-O, the Go linker doesn't generate LC_UUID in
internal linking mode. This causes some macOS system tools unable
to track the binary, as well as in some cases the binary unable
to access local network on macOS 15.

This CL makes the linker start generate LC_UUID. Currently, the
UUID is generated if the -B flag is specified. And we'll make it
generate UUID by default in a later CL. The -B flag is currently
for generating GNU build ID on ELF, which is a similar concept to
Mach-O's UUID. Instead of introducing another flag, we just use
the same flag and the same setting. Specifically, "-B gobuildid"
will generate a UUID based on the Go build ID.

For #68678.

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Change-Id: I90089a78ba144110bf06c1c6836daf2d737ff10a
Reviewed-on: https://go-review.googlesource.com/c/go/+/618595
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Than McIntosh <thanm@golang.org>
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2024-10-21 17:55:07 +00:00
Michael Anthony Knyszek
acd072a078 runtime: execute publicationBarrier in noscan case for delayed zeroing
This is a peace-of-mind change to make sure that delayed-zeroed memory
(in the large alloc case) is globally visible from the moment the
allocation is published back to the caller.

The way it's written right now is good enough for the garbage collector
(we already have a publication barrier for a nil span.largeType, so the
GC will ignore the noscan span) but this might matter for user code on
weak memory architectures.

Change-Id: I06ac9b95863074e5f09382629083b19bfa87fdb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/619036
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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2024-10-21 15:56:31 +00:00
Michael Anthony Knyszek
a1c4fb4361 runtime: specialize heapSetType
Last CL we separated mallocgc into several specialized paths. Let's
split up heapSetType too. This will make the specialized heapSetType
functions inlineable and cut out some branches as well as a function
call.

Microbenchmark results at this point in the stack:

                   │ before.out  │            after-5.out             │
                   │   sec/op    │   sec/op     vs base               │
Malloc8-4            13.52n ± 3%   12.15n ± 2%  -10.13% (p=0.002 n=6)
Malloc16-4           21.49n ± 2%   18.32n ± 4%  -14.75% (p=0.002 n=6)
MallocTypeInfo8-4    27.12n ± 1%   18.64n ± 2%  -31.30% (p=0.002 n=6)
MallocTypeInfo16-4   28.71n ± 3%   21.63n ± 5%  -24.65% (p=0.002 n=6)
geomean              21.81n        17.31n       -20.64%

Change-Id: I5de9ac5089b9eb49bf563af2a74e6dc564420e05
Reviewed-on: https://go-review.googlesource.com/c/go/+/614795
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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2024-10-21 15:56:28 +00:00
Michael Anthony Knyszek
8730fcf885 runtime: refactor mallocgc into several independent codepaths
Right now mallocgc is a monster of a function. In real programs, we see
that a substantial amount of time in mallocgc is spent in mallocgc
itself. It's very branch-y, holds a lot of state, and handles quite a few
disparate cases, trying to merge them together.

This change breaks apart mallocgc into separate, leaner functions.
There's some duplication now, but there are a lot of branches that can
be pruned as a result.

There's definitely still more we can do here. heapSetType can be inlined
and broken down for each case, since its internals roughly map to each
case anyway (done in a follow-up CL). We can probably also do more with
the size class lookups, since we know more about the size of the object
in each case than before.

Below are the savings for the full stack up until now.

                    │ after-3.out │              after-4.out              │
                    │   sec/op    │     sec/op      vs base               │
Malloc8-4             13.32n ± 2%   12.17n ±  1%     -8.63% (p=0.002 n=6)
Malloc16-4            21.64n ± 3%   19.38n ± 10%    -10.47% (p=0.002 n=6)
MallocTypeInfo8-4     23.15n ± 2%   19.91n ±  2%    -14.00% (p=0.002 n=6)
MallocTypeInfo16-4    25.86n ± 4%   22.48n ±  5%    -13.11% (p=0.002 n=6)
MallocLargeStruct-4                 270.0n ±   ∞ ¹
geomean               20.38n        30.97n          -11.58%

Change-Id: I681029c0b442f9221c4429950626f06299a5cfe4
Reviewed-on: https://go-review.googlesource.com/c/go/+/614257
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2024-10-21 15:56:25 +00:00
Michael Anthony Knyszek
60ee99cf5d runtime: break out the debug.malloc codepaths into functions
This change breaks out the debug.malloc codepaths into dedicated
functions, both for making mallocgc easier to read, and to reduce the
function's size (currently all that code is inlined and really doesn't
need to be).

This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").

Change-Id: I30b3ab4a1f349ba85b4a1b5b2c399abcdfe4844f
Reviewed-on: https://go-review.googlesource.com/c/go/+/617879
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2024-10-21 15:55:37 +00:00
Michael Anthony Knyszek
6686edc0e7 runtime: move debug checks behind constant flag in mallocgc
These debug checks are very occasionally helpful, but they do cost real
time. The biggest issue seems to be the bloat of mallocgc due to the
"throw" paths. Overall, after some follow-ups, this change cuts about
1ns off of the mallocgc fast path.

This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").

Change-Id: I07c4547ad724b9f94281320846677fb558957721
Reviewed-on: https://go-review.googlesource.com/c/go/+/617878
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2024-10-21 15:48:20 +00:00
Michael Anthony Knyszek
e750a0cdb3 runtime: rename shouldhelpgc to checkGCTrigger in mallocgc
shouldhelpgc is a very unhelpful name, because it has nothing to do with
assists and solely to do with GC triggering. Name it checkGCTrigger
instead, which is much clearer.

Change-Id: Id38debd424ddb397376c0cea6e74b3fe94002f71
Reviewed-on: https://go-review.googlesource.com/c/go/+/617877
Reviewed-by: Keith Randall <khr@google.com>
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2024-10-21 15:48:17 +00:00
Michael Anthony Knyszek
8df6413e11 runtime: recompute assistG before and after malloc
This change stops tracking assistG across malloc to reduce number of
slots the compiler must keep track of in mallocgc, which adds to
register pressure. It also makes the call to deductAssistCredit only
happen if the GC is running.

This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").

Change-Id: I4cfac7f3e8e873ba66ff3b553072737a4707e2c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/617876
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2024-10-21 15:48:15 +00:00
Michael Anthony Knyszek
d8997c8c1f runtime: use wb flag instead of gcphase for allocate-black check
This is an allocator microoptimization. There's no reason to check
gcphase in general, since it's mostly for debugging anyway.
writeBarrier.enabled is set in all the same cases here, and we force one
fewer cache line (probably) to be touched during malloc.

Conceptually, it also makes a bit more sense. The allocate-black policy
is partly informed by the write barrier design.

Change-Id: Ia5ff593d64c29cf7f4d1bced3204056566444a98
Reviewed-on: https://go-review.googlesource.com/c/go/+/617875
Reviewed-by: Keith Randall <khr@google.com>
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2024-10-21 15:46:44 +00:00
Michael Anthony Knyszek
31437f25f2 runtime: simplify mem profile checking in mallocgc
Checking whether the current allocation needs to be profiled is
currently branch-y and weirdly a lot of code. The branches are
generally predictable, but it's a surprising number of instructions.
Part of the problem is that MemProfileRate is just a global that can be
set at any time, so we need to load it and check certain settings
explicitly. In an ideal world, we would just always subtract from
nextSample and have a single branch to take the slow path if we
subtract below zero.

If MemProfileRate were a function, we could trash all the nextSample
values intentionally in each mcache. This would be slow, but
MemProfileRate changes rarely while the malloc hot path is well, hot.
Unfortunate...

Although this ideal world is, AFAICT, impossible, we can still get
close. If we cache the value of MemProfileRate in each mcache, then we
can force malloc to take the slow path whenever MemProfileRate changes.
This does require two additional loads, but crucially, these loads are
independent of everything else in mallocgc. Furthermore, the branch
dependent on those loads is incredibly predictable in practice.

This CL on its own has little-to-no impact on mallocgc. But this
codepath is going to be duplicated in several places in the next CL, so
it'll pay to simplify it. Also, we're very much trying to remedy a
death-by-a-thousand-cuts situation, and malloc is currently still kind
of a monster -- it will not help if mallocgc isn't really streamlined
itself.

Lastly, there's a nice property now that all nextSample values get
immediately re-sampled when MemProfileRate changes.

Change-Id: I6443d0cf9bd7861595584442b675ac1be8ea3455
Reviewed-on: https://go-review.googlesource.com/c/go/+/615815
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2024-10-21 15:46:39 +00:00
Sean Liao
e3d372aea8 encoding/xml: document that embedded interfaces look like non-embedded ones
Fixes #69941

Change-Id: Icc3c88d57c14fa9ca203c693d67f144686fed8cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/621076
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2024-10-21 15:18:09 +00:00
Michael Anthony Knyszek
721c04ae4e runtime: optimize 8-byte allocation pointer data writing
This change brings back a minor optimization lost in the Go 1.22 cycle
wherein the 8-byte pointer-ful span class spans would have the pointer
bitmap written ahead of time in bulk, because there's only one possible
pattern.

                  │   before    │               after               │
                  │   sec/op    │   sec/op     vs base              │
MallocTypeInfo8-4   25.13n ± 1%   23.59n ± 2%  -6.15% (p=0.002 n=6)

Change-Id: I135b84bb1d5b7e678b841b56430930bc73c0a038
Reviewed-on: https://go-review.googlesource.com/c/go/+/614256
Reviewed-by: Keith Randall <khr@golang.org>
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2024-10-21 14:47:08 +00:00
Michael Anthony Knyszek
56fb8350c8 runtime: don't call span.heapBits in writeHeapBitsSmall
For whatever reason, span.heapBits is kind of slow. It accounts for
about a quarter of the cost of writeHeapBitsSmall, which is absurd. We
get a nice speed improvement for small allocations by eliminating this
call.

                   │   before    │               after               │
                   │   sec/op    │   sec/op     vs base              │
MallocTypeInfo16-4   29.47n ± 1%   27.02n ± 1%  -8.31% (p=0.002 n=6)

Change-Id: I6270e26902e5a9254cf1503fac81c3c799c59d6a
Reviewed-on: https://go-review.googlesource.com/c/go/+/614255
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2024-10-21 14:47:04 +00:00
Michael Pratt
d94b7a1876 cmd/compile,internal/runtime/maps: add extendible hashing
Extendible hashing splits a swisstable map into many swisstables. This
keeps grow operations small.

For #54766.

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Change-Id: Id91f34af9e686bf35eb8882ee479956ece89e821
Reviewed-on: https://go-review.googlesource.com/c/go/+/604936
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2024-10-21 14:16:20 +00:00
Paul E. Murphy
4d35dcfa21 cmd/asm: add position to PCALIGN directives
This allows PCALIGN to be used in the end-to-end assembly
tests without causing an error due to missing file position.

Change-Id: Iadea2875854ffd544a963acd21293dc9840da2d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/620635
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2024-10-21 14:11:44 +00:00
Shuo Wang
c0a126b8dc runtime: revise the documentation comments for netpoll
Supplement to CL 511455.

Updates #61454

Change-Id: I111cbf297dd9159cffba333d610a7a4542915c55
GitHub-Last-Rev: fe8fa18486
GitHub-Pull-Request: golang/go#69900
Reviewed-on: https://go-review.googlesource.com/c/go/+/620495
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2024-10-21 13:40:40 +00:00
Shuo Wang
0492d936c5 syscall: skip TestSetuidEtc when root's gid is not 0
When the root user belongs to a special user group
(for example, in a mock environment), TestSetuidEtc will fail.

For example: Setegid(1)
want:"Gid: 0 1 0 1"
got:"Gid: 1001 1 1001 1"

Fixes #69921

Change-Id: I74d0a006b7529b1b569120a067eb4d7c4ed2e491
GitHub-Last-Rev: 5724383eb1
GitHub-Pull-Request: golang/go#69922
Reviewed-on: https://go-review.googlesource.com/c/go/+/620775
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2024-10-21 13:39:02 +00:00
limeidan
c1d9303d82 cmd/link: check if the trampoline is actually added
Change-Id: I2ddffe9118fd9954d9bae60c92fd8fc5b311b93a
Reviewed-on: https://go-review.googlesource.com/c/go/+/603736
Reviewed-by: Michael Pratt <mpratt@google.com>
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2024-10-21 01:55:03 +00:00
Mateusz Poliwczak
f2d118fd5f go/ast: document invalid raw string literal end position containing carriage returns
Fixes #69861

Change-Id: Id1684ee7d0c04262119d9e61f914bb9ecc0ef438
GitHub-Last-Rev: 5ad182c51a
GitHub-Pull-Request: golang/go#69862
Reviewed-on: https://go-review.googlesource.com/c/go/+/619835
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2024-10-19 03:06:22 +00:00
Michael Pratt
488e2d18d9 runtime: more thorough map benchmarks
Based on the benchmarks in github.com/cockroachlabs/swiss.

For #54766.

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Change-Id: I9ad925d3272c671e21ec04eb2da5ebd8f0fc6a28
Reviewed-on: https://go-review.googlesource.com/c/go/+/596295
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2024-10-18 23:13:43 +00:00
Mauri de Souza Meneguzzo
a8e2ecc8b1 internal/runtime/atomic: add Xchg8 for 386
For #69735

Change-Id: I5b9f57315d693d613dc88dc02c10bee39aeeef76
GitHub-Last-Rev: 690337e5b8
GitHub-Pull-Request: golang/go#69923
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2024-10-18 22:36:53 +00:00
Joseph Myers
04f054d334 runtime/testdata: fix for C23 nullptr keyword
src/runtime/testdata/testprogcgo/threadprof.go contains C code with a
variable called nullptr.  This conflicts with the nullptr keyword in
the C23 revision of the C standard (showing up as gccgo test build
failures when updating GCC to use C23 by default when building C
code).

Rename that variable to nullpointer to avoid the clash with the
keyword (any other name that's not a keyword would work just as well).

Change-Id: Ida5ef371a3f856c611409884e185c3d5ded8e86c
GitHub-Last-Rev: 2ec464703b
GitHub-Pull-Request: golang/go#69927
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2024-10-18 22:35:39 +00:00
xieyuschen
cd4820cd19 os: add precondition doc for Create and OpenFile
Fixes #69836

Change-Id: Ide243c2aa9c6f9d45976f728f97e32c4fbadb720
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2024-10-18 22:34:44 +00:00
David Chase
a9ad0ff6ba cmd/compile: omit saved .closureptr in optimized code
This worsens debugging, but improves performance.

Change-Id: I7f3c0d174823b3de412478f9537adc61ae4c076e
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2024-10-18 17:19:13 +00:00
qmuntal
6853d89477 syscall: keep write access when O_TRUNC is used on Windows
CL 618836 introduces a regression where O_APPEND and O_TRUNC could
not be used together on Windows.

This CL fixes the issue by keeping the write access when O_TRUNC is used
, which is required when overwriting data (as per the file
access rights docs: https://learn.microsoft.com/en-us/windows/win32/fileio/file-access-rights-constants).

Fixes #69902.

Change-Id: I77ec60ca6929124dd4490bdad6c3280c4db3efcb
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2024-10-18 04:09:36 +00:00
Xiaolin Zhao
e45c125a3c cmd/compile: add patterns for bitfield opcodes on loong64
goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A6000 @ 2500.00MHz
                |  bench.old   |              bench.new               |
                |    sec/op    |    sec/op     vs base                |
LeadingZeros      1.0095n ± 0%   0.8011n ± 0%  -20.64% (p=0.000 n=10)
LeadingZeros8      1.201n ± 0%    1.167n ± 0%   -2.83% (p=0.000 n=10)
LeadingZeros16     1.201n ± 0%    1.167n ± 0%   -2.83% (p=0.000 n=10)
LeadingZeros32     1.201n ± 0%    1.134n ± 0%   -5.58% (p=0.000 n=10)
LeadingZeros64    0.8007n ± 0%   1.0115n ± 0%  +26.32% (p=0.000 n=10)
TrailingZeros     0.8054n ± 0%   0.8106n ± 1%   +0.65% (p=0.000 n=10)
TrailingZeros8     1.067n ± 0%    1.002n ± 1%   -6.09% (p=0.000 n=10)
TrailingZeros16   1.0540n ± 0%   0.8389n ± 0%  -20.40% (p=0.000 n=10)
TrailingZeros32   0.8014n ± 0%   0.8117n ± 0%   +1.29% (p=0.000 n=10)
TrailingZeros64   0.8015n ± 0%   0.8124n ± 1%   +1.36% (p=0.000 n=10)
OnesCount          3.418n ± 0%    3.417n ± 0%        ~ (p=0.911 n=10)
OnesCount8        0.8004n ± 0%   0.8004n ± 0%        ~ (p=1.000 n=10)
OnesCount16        1.440n ± 0%    1.299n ± 0%   -9.79% (p=0.000 n=10)
OnesCount32        2.969n ± 0%    2.940n ± 0%   -0.94% (p=0.000 n=10)
OnesCount64        3.563n ± 0%    3.558n ± 0%   -0.14% (p=0.000 n=10)
RotateLeft        0.6677n ± 0%   0.6670n ± 0%        ~ (p=0.055 n=10)
RotateLeft8        1.318n ± 1%    1.321n ± 0%        ~ (p=0.117 n=10)
RotateLeft16      0.8457n ± 1%   0.8442n ± 0%        ~ (p=0.325 n=10)
RotateLeft32      0.8004n ± 0%   0.8004n ± 0%        ~ (p=0.837 n=10)
RotateLeft64      0.6678n ± 0%   0.6670n ± 0%   -0.13% (p=0.000 n=10)
Reverse           0.8004n ± 0%   0.8004n ± 0%        ~ (p=1.000 n=10)
Reverse8          0.6989n ± 0%   0.6969n ± 1%        ~ (p=0.138 n=10)
Reverse16         0.6998n ± 1%   0.7004n ± 1%        ~ (p=0.985 n=10)
Reverse32         0.4158n ± 1%   0.4159n ± 1%        ~ (p=0.870 n=10)
Reverse64         0.4165n ± 1%   0.4194n ± 2%        ~ (p=0.093 n=10)
ReverseBytes      0.8004n ± 0%   0.8004n ± 0%        ~ (p=1.000 n=10)
ReverseBytes16    0.4183n ± 2%   0.4148n ± 1%        ~ (p=0.055 n=10)
ReverseBytes32    0.4143n ± 2%   0.4153n ± 1%        ~ (p=0.869 n=10)
ReverseBytes64    0.4168n ± 1%   0.4177n ± 1%        ~ (p=0.184 n=10)
Add                1.201n ± 0%    1.201n ± 0%        ~ (p=0.087 n=10)
Add32              1.603n ± 0%    1.601n ± 0%   -0.12% (p=0.000 n=10)
Add64              1.201n ± 0%    1.201n ± 0%        ~ (p=0.211 n=10)
Add64multiple      1.839n ± 0%    1.835n ± 0%   -0.24% (p=0.001 n=10)
Sub                1.202n ± 0%    1.201n ± 0%   -0.04% (p=0.033 n=10)
Sub32              2.401n ± 0%    1.601n ± 0%  -33.32% (p=0.000 n=10)
Sub64              1.201n ± 0%    1.201n ± 0%        ~ (p=1.000 n=10)
Sub64multiple      2.105n ± 0%    2.096n ± 0%   -0.40% (p=0.000 n=10)
Mul               0.8008n ± 0%   0.8004n ± 0%   -0.05% (p=0.000 n=10)
Mul32             0.8041n ± 0%   0.8014n ± 0%   -0.34% (p=0.000 n=10)
Mul64             0.8008n ± 0%   0.8004n ± 0%   -0.05% (p=0.000 n=10)
Div                8.977n ± 0%    8.945n ± 0%   -0.36% (p=0.000 n=10)
Div32              4.084n ± 0%    4.086n ± 0%        ~ (p=0.445 n=10)
Div64              9.316n ± 0%    9.301n ± 0%   -0.17% (p=0.000 n=10)
geomean            1.141n         1.117n        -2.09%

Change-Id: I4dc1eaab6728f771bc722ed331fe5c6429bd1037
Reviewed-on: https://go-review.googlesource.com/c/go/+/618475
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2024-10-18 01:09:11 +00:00
Xiaolin Zhao
ef3e1dae2f cmd/compile: optimize loong64 with register indexed load/store
goos: linux
goarch: loong64
pkg: test/bench/go1
cpu: Loongson-3A6000 @ 2500.00MHz
                      |  bench.old  |              bench.new              |
                      |   sec/op    |   sec/op     vs base                |
BinaryTree17             7.766 ± 1%    7.640 ± 2%   -1.62% (p=0.000 n=20)
Fannkuch11               2.649 ± 0%    2.358 ± 0%  -10.96% (p=0.000 n=20)
FmtFprintfEmpty         35.89n ± 0%   35.87n ± 0%   -0.06% (p=0.000 n=20)
FmtFprintfString        59.44n ± 0%   57.25n ± 2%   -3.68% (p=0.000 n=20)
FmtFprintfInt           62.07n ± 0%   60.04n ± 0%   -3.27% (p=0.000 n=20)
FmtFprintfIntInt        97.90n ± 0%   97.26n ± 0%   -0.65% (p=0.000 n=20)
FmtFprintfPrefixedInt   116.7n ± 0%   119.2n ± 0%   +2.14% (p=0.000 n=20)
FmtFprintfFloat         204.5n ± 0%   201.9n ± 0%   -1.30% (p=0.000 n=20)
FmtManyArgs             455.9n ± 0%   466.8n ± 0%   +2.39% (p=0.000 n=20)
GobDecode               7.458m ± 1%   7.138m ± 1%   -4.28% (p=0.000 n=20)
GobEncode               8.573m ± 1%   8.473m ± 1%        ~ (p=0.091 n=20)
Gzip                    280.2m ± 0%   284.9m ± 0%   +1.67% (p=0.000 n=20)
Gunzip                  32.68m ± 0%   32.67m ± 0%        ~ (p=0.211 n=20)
HTTPClientServer        54.22µ ± 0%   53.24µ ± 0%   -1.80% (p=0.000 n=20)
JSONEncode              9.427m ± 1%   9.152m ± 0%   -2.92% (p=0.000 n=20)
JSONDecode              47.08m ± 1%   46.85m ± 1%   -0.49% (p=0.007 n=20)
Mandelbrot200           4.601m ± 0%   4.605m ± 0%   +0.08% (p=0.000 n=20)
GoParse                 4.776m ± 0%   4.655m ± 1%   -2.52% (p=0.000 n=20)
RegexpMatchEasy0_32     59.77n ± 0%   57.59n ± 0%   -3.66% (p=0.000 n=20)
RegexpMatchEasy0_1K     458.1n ± 0%   458.8n ± 0%   +0.15% (p=0.000 n=20)
RegexpMatchEasy1_32     59.36n ± 0%   59.24n ± 0%   -0.20% (p=0.000 n=20)
RegexpMatchEasy1_1K     557.7n ± 0%   560.2n ± 0%   +0.46% (p=0.000 n=20)
RegexpMatchMedium_32    803.1n ± 0%   772.8n ± 0%   -3.77% (p=0.000 n=20)
RegexpMatchMedium_1K    27.29µ ± 0%   25.88µ ± 0%   -5.18% (p=0.000 n=20)
RegexpMatchHard_32      1.385µ ± 0%   1.304µ ± 0%   -5.85% (p=0.000 n=20)
RegexpMatchHard_1K      40.92µ ± 0%   39.58µ ± 0%   -3.27% (p=0.000 n=20)
Revcomp                 474.3m ± 0%   410.0m ± 0%  -13.56% (p=0.000 n=20)
Template                78.16m ± 0%   76.32m ± 1%   -2.36% (p=0.000 n=20)
TimeParse               271.8n ± 0%   272.1n ± 0%   +0.11% (p=0.000 n=20)
TimeFormat              292.3n ± 0%   294.8n ± 0%   +0.86% (p=0.000 n=20)
geomean                 51.98µ        50.82µ        -2.22%

Change-Id: Ia78f1ddee8f1d9ec7192a4b8d2a4ec6058679956
Reviewed-on: https://go-review.googlesource.com/c/go/+/615918
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2024-10-17 07:32:25 +00:00
apocelipes
2b664d586c time: correct time.AppendText's error message
"time.AppendText" returns error messages that start with the prefix
"time.MarshalText: " which seems confusion.

Now correct the message prefix to "time.AppendText: " and add a test
to prevent regression.

Change-Id: I5742c9c3ed802eb79c65d459910deae4f3652ffd
GitHub-Last-Rev: ce965595c1
GitHub-Pull-Request: golang/go#69914
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2024-10-17 03:01:53 +00:00
Alan Donovan
f15195a063 go/internal/gcimporter: drop indexed import
The compiler hasn't emitted indexed export data files since go1.19,
so this code, which is only statically reachable from
go/importer.For("gc") aka importer.Default(), is not dynamically
reachable since those files will not be in indexed format.

Updates #68898

Change-Id: I12ea4e1b88da4fffdc9a07f318b9445a61e0d02b
Reviewed-on: https://go-review.googlesource.com/c/go/+/620135
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2024-10-17 02:51:00 +00:00
Sean Liao
c41b8cf1a3 strconv: display format options as list
Fixes #69890

Change-Id: I1da4eb76c008679a687f4faa4294fe32b5fc7f42
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2024-10-16 17:39:51 +00:00
Ryan Granger
24cb743d1f crypto/tls: include close notify in client tls test recordings
This commit fixes the issue where tls testdata recordings made with the
newer version of the prerecorded tls conversation test harness, doesn't
end up capturing the final close notify message. The fix simply ensures
that the tls.Client closes before the recording of the conversation is
closed. The closing of the client connection directly is no longer
needed when updating the recording since it will be closed when the
tls.Client is closed.

Fixes golang/go#69846

Change-Id: I93898de32abd89659a32ed240df6daea5aeaa7fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/620395
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2024-10-16 13:37:50 +00:00
Damien Neil
70f4717e96 os: use relative paths in a test dir in TestOpenError
Refactor TestOpenError to use relative paths in test cases,
in preparation for extending it to test os.Root.

Use a test temporary directory instead of system directory
with presumed-known contents.

Move the testcase type and case definitions inline with the test.

For #67002

Change-Id: Idc53dd9fcecf763d3e4eb3b4643032e3003d7ef4
Reviewed-on: https://go-review.googlesource.com/c/go/+/620157
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2024-10-15 17:23:27 +00:00
Robert Pająk
cbdb3545ad timer: fix Stop link in Timer.Reset doc comment
Change-Id: I0fccb18b2d5d3f7c86f026c988f90734546f7be0
GitHub-Last-Rev: a72cfe970e
GitHub-Pull-Request: golang/go#69856
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2024-10-14 21:03:43 +00:00
qmuntal
5c1a68aedd internal/syscall/windows: fix handle leak in Mkdirat
Mkdirat does not close the handle returned by CreateFile, but it should.

Mkdirat has been introduced in this developer cycle, so it is not
necessary to backport this fix to any release branch.

Change-Id: Icddac5ccdc6a142a5be5392a39aba2ae7cc9c69a
Reviewed-on: https://go-review.googlesource.com/c/go/+/620195
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2024-10-14 20:58:52 +00:00
Austin Clements
89f29a772a runtime: clarify work.bytesMarked documentation
Change-Id: If5132400aac0ef00e467958beeaab5e64d053d10
Reviewed-on: https://go-review.googlesource.com/c/go/+/619099
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Reviewed-by: Keith Randall <khr@google.com>
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2024-10-14 20:36:52 +00:00
Michael Pratt
c39bc22c14 all: wire up swisstable maps
Use the new SwissTable-based map in internal/runtime/maps as the basis
for the runtime map when GOEXPERIMENT=swissmap.

Integration is complete enough to pass all.bash. Notable missing
features:

* Race integration / concurrent write detection
* Stack-allocated maps
* Specialized "fast" map variants
* Indirect key / elem

For #54766.

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Change-Id: Ie97b656b6d8e05c0403311ae08fef9f51756a639
Reviewed-on: https://go-review.googlesource.com/c/go/+/594596
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-10-14 19:58:47 +00:00
Ian Lance Taylor
48849e0866 runtime: don't frob isSending for tickers
The Ticker Stop and Reset methods don't report a value,
so we don't need to track whether they are interrupting a send.

This includes a test that used to fail about 2% of the time on
my laptop when run under x/tools/cmd/stress.

Change-Id: Ic6d14b344594149dd3c24b37bbe4e42e83f9a9ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/620136
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-10-14 19:04:43 +00:00
zhangjian
1f51b82758 cmd/cgo/internal/testsanitizers: correct comment in tsan test
Change-Id: Id22ad7c92c54bc61f1f1d5544f17208f2f8648aa
GitHub-Last-Rev: 61eee331dc
GitHub-Pull-Request: golang/go#69866
Reviewed-on: https://go-review.googlesource.com/c/go/+/619836
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-10-14 16:59:38 +00:00
apocelipes
db8c208cbd cmd/cgo,cmd/go: preallocate slices if they have known fixed capacities
This allows for more efficient use of memory.

Change-Id: I16f399a25c23b804e55289ca055fa83ea9862f16
GitHub-Last-Rev: 19bb96a7cf
GitHub-Pull-Request: golang/go#69841
Reviewed-on: https://go-review.googlesource.com/c/go/+/618960
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2024-10-14 15:47:06 +00:00