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59620 Commits

Author SHA1 Message Date
cui fliter
e0cd90528e reflect: add available godoc link
Change-Id: Ib199ce1a781e8e3a66d3dc8bda617e6bc30b290e
Reviewed-on: https://go-review.googlesource.com/c/go/+/539578
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
2024-04-02 15:20:05 +00:00
qiulaidongfeng
daaf1f2220 all: use kind* of abi
For #59670

Change-Id: Id66e102f13e529dd041b68ce869026a56f0a1b9b
GitHub-Last-Rev: 43aa9376f7
GitHub-Pull-Request: golang/go#65564
Reviewed-on: https://go-review.googlesource.com/c/go/+/562298
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Austin Clements <austin@google.com>
2024-04-02 15:10:48 +00:00
Tobias Klauser
e3ec1ca17e os: define wrapSyscallError only on linux
wrapSyscallError by now is only used on linux in the methods defined in
os/zero_copy_linux.go. Move the definition there.

Change-Id: I0ca5749adaac44e8d095b8452458b647f595d3c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/575595
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>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2024-04-02 15:01:40 +00:00
Shengyu Zhang
88b1d6115a encoding/json: prevent duplicate slicebytetostring
When storing literal to JSON number v, if s is valid number, the slicebytetostring operation will be performed twice. In fact, the operation is unavoidable on any code path, so just perform it at the very beginning.

This is not a big optimization, but better than nothing:

    $ ../bin/go test ./encoding/json/ -bench UnmarshalNumber -run NOTEST -benchtime 10000000x -count 16  > old.txt
    $ ../bin/go test ./encoding/json/ -bench UnmarshalNumber -run NOTEST -benchtime 10000000x -count 16  > new.txt
    $ benchstat old.txt new.txt
                      │   old.txt   │              new.txt               │
                      │   sec/op    │   sec/op     vs base               │
    UnmarshalNumber-8   234.5n ± 3%   228.2n ± 4%  -2.67% (p=0.033 n=16)

                      │  old.txt   │            new.txt             │
                      │    B/op    │    B/op     vs base            │
    UnmarshalNumber-8   168.0 ± 0%   168.0 ± 0%  ~ (p=1.000 n=16) ¹
    ¹ all samples are equal

                      │  old.txt   │            new.txt             │
                      │ allocs/op  │ allocs/op   vs base            │
    UnmarshalNumber-8   2.000 ± 0%   2.000 ± 0%  ~ (p=1.000 n=16) ¹
    ¹ all samples are equal

Change-Id: I1dfdb1ed0883e385f753b2046b7f047c792aa4e3
GitHub-Last-Rev: d236dd7265
GitHub-Pull-Request: golang/go#61242
Reviewed-on: https://go-review.googlesource.com/c/go/+/508556
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-04-02 15:00:17 +00:00
Olivier Mengué
0611816216 regexp/syntax: cleanup code generation in perl_groups.go
Cleanup code generation of perl_groups.go:
* Fix the generated code header to follow the standard https://go.dev/s/generatedcode
* Apply gofmt as last step of code generation
* Add //go:generate lines in parse.go to trigger code generation
* Adapt make_perl_groups.pl to handle writing directly to the output
  file (as we can't use shell redirection in go:generate lines)
* use strict; use warnings;

Change-Id: I675241da03dd3f6facc9eb9de00999bd9203ad70
Reviewed-on: https://go-review.googlesource.com/c/go/+/555995
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-04-02 13:59:01 +00:00
aimuz
be50b58d70 internal/zstd: optimize window reset using make for buffer allocation
Optimize the zstd window's reset function to use `make` for buffer
allocation when needed. This ensures efficient memory usage by
conditionally reallocating the buffer based on its capacity, improving
performance in scenarios where the existing buffer is insufficient.

```
goos: darwin
goarch: amd64
pkg: internal/zstd
cpu: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
         │   old.out   │            new.out            │
         │   sec/op    │   sec/op     vs base          │
Large-12   7.299m ± 5%   7.235m ± 1%  ~ (p=0.353 n=10)

         │   old.out    │            new.out             │
         │     B/s      │     B/s       vs base          │
Large-12   35.56Mi ± 4%   35.87Mi ± 1%  ~ (p=0.353 n=10)

         │   old.out    │               new.out                │
         │     B/op     │     B/op      vs base                │
Large-12   68.86Ki ± 4%   15.87Ki ± 1%  -76.95% (p=0.000 n=10)

         │  old.out   │            new.out             │
         │ allocs/op  │ allocs/op   vs base            │
Large-12   0.000 ± 0%   0.000 ± 0%  ~ (p=1.000 n=10) ¹
¹ all samples are equal
```

Change-Id: Icd9c278b42ea149107a9861d006f40129c59831b
GitHub-Last-Rev: c00344cca4
GitHub-Pull-Request: golang/go#64221
Reviewed-on: https://go-review.googlesource.com/c/go/+/543375
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-04-02 13:49:23 +00:00
Alan Donovan
3b29222ffd cmd: update vendored x/tools to 904c6ba
This fixes one of the many obstacles to enabling
types.Alias by updating vet.

The 'loopclosure' checker (formerly 'rangeloop') no longer
reports any findings with go1.22, so the test needed work
to ensure that it still runs on files with go1.21 semantics.

Updates #65294

Change-Id: I987ff529d4e165b56b7241563c6003e63bf92bb1
Reviewed-on: https://go-review.googlesource.com/c/go/+/575315
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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2024-04-02 02:20:05 +00:00
Mohammad Abbasi
e565720e49 database/sql: refactor unused variables to use blank identifiers
Hi
I've replaced unused variables in database/sql with blank identifiers to improve code readability.

This change has no impact on the functionality of the code, but makes it easier to read and understand.

Change-Id: I701e93fd9bf86725f411085bf2e8f8e6b235af14
GitHub-Last-Rev: eb40bd5e2e
GitHub-Pull-Request: golang/go#58986
Reviewed-on: https://go-review.googlesource.com/c/go/+/475675
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-04-02 01:32:55 +00:00
Michael Matloob
cd294f55ca cmd: update and vendor golang.org/x/telemetry@3640ba5
Commands run:
	go get golang.org/x/telemetry@3640ba5
	go mod vendor
	go mod tidy

This pulls in golang.org/cl/574815, fixing #66344

Fixes #66344

Change-Id: Ib5a0c4fc1e0bd44dbc13453ec1dade89a8d96f70
Reviewed-on: https://go-review.googlesource.com/c/go/+/575575
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2024-04-01 20:28:41 +00:00
Paul E. Murphy
dfb17c126c cmd/compile: support float min/max instructions on PPC64
This enables efficient use of the builtin min/max function
for float64 and float32 types on GOPPC64 >= power9.

Extend the assembler to support xsminjdp/xsmaxjdp and use
them to implement float min/max.

Simplify the VSX xx3 opcode rules to allow FPR arguments,
if all arguments are an FPR.

Change-Id: I15882a4ce5dc46eba71d683cf1d184dc4236a328
Reviewed-on: https://go-review.googlesource.com/c/go/+/574535
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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2024-04-01 18:50:29 +00:00
guoguangwu
a49952445f cmd/compile: close files in the startProfile function
Change-Id: I803d625249890c88fbf35394a85e0b2952123620
GitHub-Last-Rev: 239b28e857
GitHub-Pull-Request: golang/go#66532
Reviewed-on: https://go-review.googlesource.com/c/go/+/574336
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
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2024-04-01 17:19:20 +00:00
qmuntal
7c89ad6a80 os: support relative paths in fixLongPath
(This CL takes the tests and some ideas from the abandoned CL 263538).

fixLongPath is used on Windows to process all path names
before syscalls to switch them to extended-length format
(with prefix \\?\) to workaround a historical limit
of 260-ish characters.

This CL updates fixLongPath to convert relative paths to absolute
paths if the working directory plus the relative path exceeds
MAX_PATH. This is necessary because the Windows API does not
support extended-length paths for relative paths.

This CL also adds support for fixing device paths (\\.\-prefixed),
which were not previously normalized.

Fixes #41734
Fixes #21782
Fixes #36375

Cq-Include-Trybots: luci.golang.try:gotip-windows-amd64-longtest,gotip-windows-amd64-race,gotip-windows-arm64
Co-authored-by: Giovanni Bajo <rasky@develer.com>
Change-Id: I63cfb79f3ae6b9d42e07deac435b730d97a6f492
Reviewed-on: https://go-review.googlesource.com/c/go/+/574695
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2024-04-01 14:34:38 +00:00
apocelipes
6bfaafd3c3 database/sql: use slices to simplify the code
Change-Id: Ia198272330626271ee7d4e1ae46afca819ab2933
GitHub-Last-Rev: e713ac3163
GitHub-Pull-Request: golang/go#66572
Reviewed-on: https://go-review.googlesource.com/c/go/+/574995
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2024-04-01 12:38:07 +00:00
Kévin Dunglas
d49a14c609 cmd/cgo: update outdated docs about cgocheck2
Setting GODEBUG=cgocheck=2 now panics with a message
such as "fatal error: cgocheck > 1 mode is no longer supported at runtime.
Use GOEXPERIMENT=cgocheck2 at build time instead."

Change-Id: If9a5a96933973e14a1a60b8e9fb6a1f4a818cf59
GitHub-Last-Rev: 787d62454c
GitHub-Pull-Request: golang/go#65224
Reviewed-on: https://go-review.googlesource.com/c/go/+/557597
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2024-03-31 09:02:45 +00:00
guoguangwu
ba9c445f16 cmd/go: close elf file in the readpkglist function
Change-Id: Ief08e311598152f047878fc0fe6a6e37df372ee9
GitHub-Last-Rev: daec402b39
GitHub-Pull-Request: golang/go#66588
Reviewed-on: https://go-review.googlesource.com/c/go/+/575156
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2024-03-30 00:20:35 +00:00
Cuong Manh Le
0bf6071066 Revert "cmd/compile/internal: merge stack slots for selected local auto vars"
This reverts CL 553055.

Reason for revert: causes crypto/ecdsa failures on linux ppc64/s390x builders

Change-Id: I9266b030693a5b6b1e667a009de89d613755b048
Reviewed-on: https://go-review.googlesource.com/c/go/+/575236
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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2024-03-30 00:11:00 +00:00
Than McIntosh
89f7805c2e cmd/compile/internal: merge stack slots for selected local auto vars
Preliminary compiler support for merging/overlapping stack
slots of local variables whose access patterns are disjoint.

This patch includes changes in AllocFrame to do the actual
merging/overlapping based on information returned from a new
liveness.MergeLocals helper. The MergeLocals helper identifies
candidates by looking for sets of AUTO variables that either A) have
the same size and GC shape (if types contain pointers), or B) have the
same size (but potentially different types as long as those types have
no pointers). Variables must be greater than (3*types.PtrSize) in size
to be considered for merging.

After forming candidates, MergeLocals collects variables into "can be
overlapped" equivalence classes or partitions; this process is driven
by an additional liveness analysis pass. Ideally it would be nice to
move the existing stackmap liveness pass up before AllocFrame
and "widen" it to include merge candidates so that we can do just a
single liveness as opposed to two passes, however this may be difficult
given that the merge-locals liveness has to take into account
writes corresponding to dead stores.

This patch also required a change to the way ssa.OpVarDef pseudo-ops
are generated; prior to this point they would only be created for
variables whose type included pointers; if stack slot merging is
enabled then the ssagen code creates OpVarDef ops for all auto vars
that are merge candidates.

Note that some temporaries created late in the compilation process
(e.g. during ssa backend) are difficult to reason about, especially in
cases where we take the address of a temp and pass it to the runtime.
For the time being we mark most of the vars created post-ssagen as
"not a merge candidate".

Stack slot merging for locals/autos is enabled by default if "-N" is
not in effect, and can be disabled via "-gcflags=-d=mergelocals=0".

Fixmes/todos/restrictions:
- try lowering size restrictions
- re-evaluate the various skips that happen in SSA-created autotmps

Fixes #62737.
Updates #65532.
Updates #65495.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest
Change-Id: Ibc22e8a76c87e47bc9fafe4959804d9ea923623d
Reviewed-on: https://go-review.googlesource.com/c/go/+/553055
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2024-03-29 23:09:29 +00:00
Daniel Martí
754f870381 crypto/tls,regexp: remove always-nil error results
These were harmless, but added unnecessary verbosity to the code.
This can happen as a result of refactors: for example,
the method sessionState used to return errors in some cases.

Change-Id: I4e6dacc01ae6a49b528c672979f95cbb86795a85
Reviewed-on: https://go-review.googlesource.com/c/go/+/528995
Reviewed-by: Leo Isla <islaleo93@gmail.com>
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Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
2024-03-29 22:22:45 +00:00
Than McIntosh
dcf046f021 cmd/compile/internal: refactor coverage ir.Name flags
Minor refactoring to eliminate one of the ir.Name flag values used
when building in coverage mode (no changes to functionality). This is
intended to free up a bit in the uint16 flags field to be used in a
subsequent patch.

Change-Id: I4aedb9a55fde24c808ff3f7b077ee0552aa979af
Reviewed-on: https://go-review.googlesource.com/c/go/+/572055
Reviewed-by: Cherry Mui <cherryyz@google.com>
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2024-03-29 21:55:46 +00:00
Than McIntosh
7979c8f588 cmd/compile/internal/liveness: introduce "live intervals" utility
Introduce a helper type "Intervals" that contains sets of sorted
disjoint ranges corresponding to live ranges within a function.
Example: the Intervals set "{ [0,1), [4,10) }" would indicate that
something is live starting at instruction 0, then up to but not
including instruction 1, then dead from 1-3, then live again at
instruction 4 up to (but not including) instruction 10.

This patch provides APIs for constructing interval sets, testing to
see whether two sets overlap, and unioning/merging together two
intervals sets.

Updates #62737.
Updates #65532.
Updates #65495.

Change-Id: I7140a5989eba93bf3b8762d9224261f5eba0646d
Reviewed-on: https://go-review.googlesource.com/c/go/+/566177
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2024-03-29 21:55:27 +00:00
Than McIntosh
593daf785f cmd/compiler/internal/ssagen: refactor code to sort stack vars
Minor refactoring of the code that sorts stack variables to move
from sort.Stable to sort.SliceStable. No change in semantics; this
is intended to lay the groundwork for a future change.

Change-Id: I9eb920e3b3029a734fbe0e0e88c0d57ea3452599
Reviewed-on: https://go-review.googlesource.com/c/go/+/566176
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2024-03-29 21:55:16 +00:00
Than McIntosh
29fcd1569a Revert "cmd/compile: add missing OINLCAll case in mayModifyPkgVar"
This reverts CL 575175.

Reason for revert: causes crypto/ecdh failures on longtest builders.

Change-Id: Ieed326fedf91760ac73095a42ba0237cf969843b
Reviewed-on: https://go-review.googlesource.com/c/go/+/575316
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2024-03-29 21:53:14 +00:00
Cuong Manh Le
9a028e14a5 cmd/compile: add missing OINLCAll case in mayModifyPkgVar
CL 395541 made staticopy safe, stop applying the optimization once
seeing an expression that may modify global variables.

However, if a call expression was inlined, the analyzer mis-recognizes
and think that the expression is safe. For example:

	var x = 0
	var a = f()
	var b = x

are re-written to:

	var x = 0
	var a = ~r0
	var b = 0

even though it's not safe because "f()" may modify "x".

Fixing this by recognizing OINLCALL and mark the initialization as
not safe for staticopy.

Fixes #66585

Change-Id: Id930c0b7e74274195f54a498cc4c5a91c4e6d84d
Reviewed-on: https://go-review.googlesource.com/c/go/+/575175
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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2024-03-29 16:46:47 +00:00
Daniel Martí
27c7a3dcc3 regexp/syntax: use the Regexp.Equal static method directly
A follow-up for the recent https://go.dev/cl/573978.

Change-Id: I0e75ca0b37d9ef063bbdfb88d4d2e34647e0ee50
Reviewed-on: https://go-review.googlesource.com/c/go/+/574677
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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2024-03-29 16:41:51 +00:00
Jes Cok
2830d5457e runtime: make use of builtin clear in tests
This is a follow-up to CL 574675.

Change-Id: I98c3ea968e9c7dc61472849c385a1e697568aa30
Reviewed-on: https://go-review.googlesource.com/c/go/+/574975
Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-03-29 16:41:12 +00:00
guoguangwu
8f59b28fb3 cmd/cgo: close the file opened in the dynimport function
Change-Id: Ic457e994b50a0e8c1769311937eede1e710a1293
GitHub-Last-Rev: a8af7b5e67
GitHub-Pull-Request: golang/go#66549
Reviewed-on: https://go-review.googlesource.com/c/go/+/574537
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-29 16:41:10 +00:00
Russ Cox
d0051be847 runtime: simplify timers.siftDown
No effect on benchmarks, but the code is clearer.

goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │  s7base.txt  │               s7.txt                │
                                   │    sec/op    │    sec/op     vs base               │
AdjustTimers10000-32                 195.9µ ± 13%   198.1µ ±  2%       ~ (p=0.436 n=10)
AdjustTimers10000SingleThread-32     1.573m ± 13%   1.566m ± 10%       ~ (p=0.739 n=10)
AdjustTimers10000NoReset-32          170.6µ ±  1%   170.4µ ±  1%       ~ (p=0.912 n=10)
AdjustTimers10000NoSleep-32          183.9µ ±  2%   181.4µ ±  2%  -1.39% (p=0.045 n=10)
AdjustTimers10000NoResetNoSleep-32   151.3µ ±  1%   150.0µ ±  1%  -0.90% (p=0.007 n=10)

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt               │
                                   │   sec/op    │   sec/op     vs base               │
AdjustTimers10000-12                 234.2µ ± 1%   234.5µ ± 1%       ~ (p=0.796 n=10)
AdjustTimers10000SingleThread-12     1.191m ± 1%   1.272m ± 1%  +6.81% (p=0.000 n=10)
AdjustTimers10000NoReset-12          239.6µ ± 2%   236.3µ ± 9%       ~ (p=0.971 n=10)
AdjustTimers10000NoSleep-12          223.3µ ± 2%   221.4µ ± 3%       ~ (p=0.579 n=10)
AdjustTimers10000NoResetNoSleep-12   209.2µ ± 2%   209.0µ ± 4%       ~ (p=0.796 n=10)


Change-Id: Id48aa893235d652814b7fa4605037f09b0b4d73b
Reviewed-on: https://go-review.googlesource.com/c/go/+/574897
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-03-29 14:36:24 +00:00
Russ Cox
bb7a29991c runtime: move whenHeap into heap slice
This CL changes the timer heap from a slice of timers to a slice
of {timer, when} pairs, moving timer.whenHeap into the heap
backing store itself. This makes the ownership clearer (t.whenHeap
was always protected by the heap lock, not the timer's lock)
and also avoids an indirection when doing heap operations,
which look at the when field quite a lot.

goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │  s7base.txt  │                s7.txt                │
                                   │    sec/op    │    sec/op     vs base                │
AdjustTimers10000-32                 244.1µ ±  5%   195.9µ ± 13%  -19.76% (p=0.001 n=10)
AdjustTimers10000SingleThread-32     1.674m ±  6%   1.573m ± 13%   -6.03% (p=0.001 n=10)
AdjustTimers10000NoReset-32          194.0µ ±  2%   170.6µ ±  1%  -12.06% (p=0.000 n=10)
AdjustTimers10000NoSleep-32          223.0µ ±  7%   183.9µ ±  2%  -17.54% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-32   181.1µ ±  1%   151.3µ ±  1%  -16.45% (p=0.000 n=10)

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt                │
                                   │   sec/op    │   sec/op     vs base                │
AdjustTimers10000-12                 266.6µ ± 2%   234.2µ ± 1%  -12.16% (p=0.000 n=10)
AdjustTimers10000SingleThread-12     1.194m ± 0%   1.191m ± 1%   -0.33% (p=0.029 n=10)
AdjustTimers10000NoReset-12          260.9µ ± 2%   239.6µ ± 2%   -8.15% (p=0.000 n=10)
AdjustTimers10000NoSleep-12          247.8µ ± 2%   223.3µ ± 2%   -9.90% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-12   231.7µ ± 2%   209.2µ ± 2%   -9.68% (p=0.000 n=10)

Change-Id: I546f077068476d7a7b855889419b292525fb2bc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/574896
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-03-29 14:35:56 +00:00
Jes Cok
bb523c9542 net/http: correct doc for ServeFileFS
The documentation of ServeFileFS was partly copied from ServeFile
in CL 513956, however it's not exact. This CL fixes some typos, also
removes obsolete comment for name param.

For consistency, also adds godoc link for ServeFile and ServeContent.

Fixes #66578

Change-Id: I87147d72c533d46284f06ef20b37fdafa8706710
Reviewed-on: https://go-review.googlesource.com/c/go/+/575016
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
2024-03-29 00:17:10 +00:00
Keith Randall
8f618c1f53 cmd/compile: put constants before variables in initialization order
Fixes #66575

Change-Id: I03f4d4577b88ad0a92b260b2efd0cb9fe5082b2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/575075
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-28 22:06:51 +00:00
Olivier Mengué
3f90ba7f1f go/ast: more godoc links
Change-Id: I1290ad66d3c758c3b89caf0a217cb3d5358c5dd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/574696
Reviewed-by: Robert Griesemer <gri@google.com>
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>
2024-03-28 21:32:41 +00:00
Russ Cox
fae6eb5f2f runtime: fix timer race introduced in CL 573455
There is a short window when timers.adjust could miss a
timer update. Close that window. Does not change benchmark.

goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │ s7base.txt  │               s7.txt                │
                                   │   sec/op    │    sec/op     vs base               │
AdjustTimers10000-32                 239.9µ ± 5%   237.6µ ±  8%       ~ (p=0.631 n=10)
AdjustTimers10000SingleThread-32     1.686m ± 8%   1.710m ±  5%       ~ (p=0.481 n=10)
AdjustTimers10000NoReset-32          194.1µ ± 1%   190.8µ ±  2%  -1.69% (p=0.023 n=10)
AdjustTimers10000NoSleep-32          226.2µ ± 3%   222.9µ ±  3%       ~ (p=0.143 n=10)
AdjustTimers10000NoResetNoSleep-32   182.9µ ± 1%   180.9µ ±  2%       ~ (p=0.165 n=10)

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt               │
                                   │   sec/op    │   sec/op     vs base               │
AdjustTimers10000-12                 269.3µ ± 2%   267.0µ ± 2%       ~ (p=0.529 n=10)
AdjustTimers10000SingleThread-12     1.176m ± 1%   1.213m ± 1%  +3.15% (p=0.000 n=10)
AdjustTimers10000NoReset-12          262.6µ ± 2%   261.4µ ± 3%       ~ (p=0.123 n=10)
AdjustTimers10000NoSleep-12          247.8µ ± 1%   246.5µ ± 1%       ~ (p=0.393 n=10)
AdjustTimers10000NoResetNoSleep-12   231.0µ ± 1%   232.3µ ± 1%       ~ (p=0.684 n=10)

Change-Id: Ifdfcdd5a25046027912a8b306644bde7ec2d3214
Reviewed-on: https://go-review.googlesource.com/c/go/+/574741
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-03-28 21:25:26 +00:00
Russ Cox
77d9cb8937 runtime: adjust when timers.adjust is called
This new logic more closely mimics what we did before my CL stack.
I had reasoned that certainly

	ts.adjust(now, force=true)
	ts.run(now)

would be faster than

	ts.adjust(now, force=false)
	ts.run(now)
	ts.adjust(now, force=true)

But certainty is just an emotion, and that turns out not to be the case.

I don't really understand why the second sequence is faster,
but it definitely is, so put it back.

goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │ s7base.txt  │               s7.txt               │
                                   │   sec/op    │   sec/op     vs base               │
AdjustTimers10000-32                 263.3µ ± 4%   239.9µ ± 5%  -8.87% (p=0.000 n=10)
AdjustTimers10000SingleThread-32     1.742m ± 3%   1.686m ± 8%       ~ (p=0.105 n=10)
AdjustTimers10000NoReset-32          192.2µ ± 2%   194.1µ ± 1%  +1.00% (p=0.009 n=10)
AdjustTimers10000NoSleep-32          237.0µ ± 2%   226.2µ ± 3%  -4.55% (p=0.001 n=10)
AdjustTimers10000NoResetNoSleep-32   185.2µ ± 1%   182.9µ ± 1%  -1.23% (p=0.003 n=10)


goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt               │
                                   │   sec/op    │   sec/op     vs base               │
AdjustTimers10000-12                 272.6µ ± 3%   269.3µ ± 2%       ~ (p=0.063 n=10)
AdjustTimers10000SingleThread-12     1.126m ± 1%   1.176m ± 1%  +4.42% (p=0.000 n=10)
AdjustTimers10000NoReset-12          255.1µ ± 2%   262.6µ ± 2%  +2.96% (p=0.000 n=10)
AdjustTimers10000NoSleep-12          250.2µ ± 2%   247.8µ ± 1%       ~ (p=0.063 n=10)
AdjustTimers10000NoResetNoSleep-12   230.3µ ± 1%   231.0µ ± 1%       ~ (p=0.280 n=10)

Change-Id: I67b5765f97dfca0142ee38e15a9904b520f51e83
Reviewed-on: https://go-review.googlesource.com/c/go/+/574740
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-28 21:25:23 +00:00
Russ Cox
97f1b76b4b runtime: optimize timers.cleanHead
goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │ s7base.txt  │               s7.txt                │
                                   │   sec/op    │   sec/op     vs base                │
AdjustTimers10000-32                 291.4µ ± 5%   263.3µ ± 4%   -9.64% (p=0.000 n=10)
AdjustTimers10000SingleThread-32     1.728m ± 5%   1.742m ± 3%        ~ (p=0.796 n=10)
AdjustTimers10000NoReset-32          253.1µ ± 6%   192.2µ ± 2%  -24.07% (p=0.000 n=10)
AdjustTimers10000NoSleep-32          277.3µ ± 3%   237.0µ ± 2%  -14.54% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-32   241.4µ ± 2%   185.2µ ± 1%  -23.30% (p=0.000 n=10)

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt                │
                                   │   sec/op    │   sec/op     vs base                │
AdjustTimers10000-12                 288.1µ ± 1%   272.6µ ± 3%   -5.38% (p=0.000 n=10)
AdjustTimers10000SingleThread-12     1.195m ± 1%   1.126m ± 1%   -5.74% (p=0.000 n=10)
AdjustTimers10000NoReset-12          280.8µ ± 1%   255.1µ ± 2%   -9.14% (p=0.000 n=10)
AdjustTimers10000NoSleep-12          292.5µ ± 1%   250.2µ ± 2%  -14.47% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-12   279.8µ ± 2%   230.3µ ± 1%  -17.69% (p=0.000 n=10)

Change-Id: I36edb40ee2cd11ab44d20bff045fa77609dca648
Reviewed-on: https://go-review.googlesource.com/c/go/+/574739
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-28 21:25:21 +00:00
Russ Cox
84b190ad3c runtime: avoid unnecessary netpoll wakeups during timer creation
goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                                   │ s7base.txt  │               s7.txt               │
                                   │   sec/op    │   sec/op     vs base               │
AdjustTimers10000-32                 315.1µ ± 4%   291.4µ ± 5%  -7.52% (p=0.001 n=10)
AdjustTimers10000SingleThread-32     1.728m ± 6%   1.728m ± 5%       ~ (p=0.971 n=10)
AdjustTimers10000NoReset-32          263.0µ ± 3%   253.1µ ± 6%  -3.75% (p=0.023 n=10)
AdjustTimers10000NoSleep-32          306.8µ ± 5%   277.3µ ± 3%  -9.62% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-32   245.3µ ± 3%   241.4µ ± 2%       ~ (p=0.529 n=10)

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                                   │ m3base.txt  │               m3.txt                │
                                   │   sec/op    │   sec/op     vs base                │
AdjustTimers10000-12                 385.5µ ± 3%   288.1µ ± 1%  -25.26% (p=0.000 n=10)
AdjustTimers10000SingleThread-12     1.213m ± 1%   1.195m ± 1%   -1.45% (p=0.001 n=10)
AdjustTimers10000NoReset-12          346.4µ ± 5%   280.8µ ± 1%  -18.94% (p=0.000 n=10)
AdjustTimers10000NoSleep-12          362.6µ ± 1%   292.5µ ± 1%  -19.33% (p=0.000 n=10)
AdjustTimers10000NoResetNoSleep-12   317.3µ ± 8%   279.8µ ± 2%  -11.79% (p=0.000 n=10)


Change-Id: Id3e10abfb1024f8e7883c8c366d941e4f1c2a894
Reviewed-on: https://go-review.googlesource.com/c/go/+/574738
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Russ Cox <rsc@golang.org>
2024-03-28 21:25:17 +00:00
apocelipes
33fd95b820 encoding/asn1: simplify appendFourDigits
The new code does not need a for-loop and is easier to read.

Change-Id: Ic182d63c4779c2179b721fcfaec362681284cc16
GitHub-Last-Rev: b3ee265df7
GitHub-Pull-Request: golang/go#63879
Reviewed-on: https://go-review.googlesource.com/c/go/+/538721
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2024-03-28 18:16:09 +00:00
Russ Cox
ed9aed1c9d internal/sysinfo: implement CPUName on bsd systems
sysctl machdep.cpu.brand_string seems to be standard
across the BSDs. There does not seem to be a standard
way to get the CPU frequency.

Change-Id: Ic986d6c81dd54e1b84544317f2a53ce16801319b
Reviewed-on: https://go-review.googlesource.com/c/go/+/520636
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Bypass: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-03-28 14:40:31 +00:00
Daniel Martí
2e1003e2f7 cmd/go: replace reflect.DeepEqual with slices.Equal and maps.Equal
All of these maps and slices are made up of comparable types,
so we can avoid the overhead of reflection entirely.

Change-Id: If77dbe648a336ba729c171e84c9ff3f7e160297d
Reviewed-on: https://go-review.googlesource.com/c/go/+/574597
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-03-27 21:58:12 +00:00
Michael Pratt
0c5612092d cmd/compile: rename cmd/compile/internal/pgo to cmd/compile/internal/pgoir
This helps reduce confusion with cmd/internal/pgo, which performs
compilation-independent analysis. pgoir associates that data with the
IR from the current package compilation.

For #58102.

Change-Id: I9ef1c8bc41db466d3340f41f6d071b95c09566de
Reviewed-on: https://go-review.googlesource.com/c/go/+/569338
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-27 20:42:52 +00:00
Michael Pratt
63deaf00ea cmd/compile,cmd/preprofile: move logic to shared common package
The processing performed in cmd/preprofile is a simple version of the
same initial processing performed by cmd/compile/internal/pgo. Refactor
this processing into the new IR-independent cmd/internal/pgo package.

Now cmd/preprofile and cmd/compile run the same code for initial
processing of a pprof profile, guaranteeing that they always stay in
sync.

Since it is now trivial, this CL makes one change to the serialization
format: the entries are ordered by weight. This allows us to avoid
sorting ByWeight on deserialization.

Impact on PGO parsing when compiling cmd/compile with PGO:

* Without preprocessing: PGO parsing ~13.7% of CPU time
* With preprocessing (unsorted): ~2.9% of CPU time (sorting ~1.7%)
* With preprocessing (sorted): ~1.3% of CPU time

The remaining 1.3% of CPU time approximately breaks down as:

* ~0.5% parsing the preprocessed profile
* ~0.7% building weighted IR call graph
  * ~0.5% walking function IR to find direct calls
  * ~0.2% performing lookups for indirect calls targets

For #58102.

Change-Id: Iaba425ea30b063ca195fb2f7b29342961c8a64c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/569337
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-03-27 20:20:01 +00:00
qmuntal
2860e01853 os: make readdir more robust on Windows
On Windows, File.readdir currently fails if the volume information
can't be retrieved via GetVolumeInformationByHandle and if the
directory path is relative and can't be converted to an absolute
path.

This change makes readdir more robust by not failing in these cases,
as these steps are just necessary to support a potential call to
os.SameFile, but not for the actual readdir operation. os.SameFile
will still fail in these cases, but that's a separate issue tracked
in #62042.

Change-Id: I8d98d8379bdac4b2832fa433432a5f027756abaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/574155
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2024-03-27 19:06:55 +00:00
Ian Lance Taylor
132f9fa9f8 test: issue16016: use fewer goroutines for gccgo
For https://gcc.gnu.org/PR114453

Change-Id: If41d9fca6288b18ed47b0f21ff224c74ddb34958
Reviewed-on: https://go-review.googlesource.com/c/go/+/574536
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-27 18:39:06 +00:00
Jes Cok
d4cc35c4fd all: make use of builtin clear
Change-Id: I1df0685c75fc1044ba46003a69ecc7dfc53bbc2b
Reviewed-on: https://go-review.googlesource.com/c/go/+/574675
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-03-27 18:23:49 +00:00
Michael Pratt
979b34b37c cmd/preprofile: drop output directory check
This check serves only to provide a more descriptive error if the output
directory doesn't exist. That isn't useless, but I don't see why this tool
specifically should do this when no other part of the toolchain does.

For #58102.

Change-Id: I01cf9db2cc1dad85c3afd8a6b008c53f26cb877a
Reviewed-on: https://go-review.googlesource.com/c/go/+/569336
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-27 17:55:52 +00:00
Michael Pratt
a16b4bf30c cmd/preprofile: clean up error handling
This CL adjusts error handling to be a bit more idiomatic. The
processing function returns errors, leaving main to log and exit on
error.

This CL contains no functional changes.

For #58102.

Change-Id: I9074127cc675e177d046474b7f01fbc37d0bd4c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/569335
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-27 17:55:39 +00:00
Roland Shoemaker
50dcffb384 crypto/internal/boring: don't shadow named returns
In setupRSA we use named returns so that we can defer freeing of the
boring private key and context, but were using returns of the form
`return nil, nil, ...` which nil'd the named returns, preventing them
from actually being freed.

Update all of the returns to not shadow the named variables.

Thanks to Quim Muntal of Microsoft for reporting this issue.

Change-Id: Iaf0f0b17e123a7df730cb1e91a324fe622611f66
Reviewed-on: https://go-review.googlesource.com/c/go/+/574195
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
2024-03-26 23:38:03 +00:00
Keith Randall
b47f2febea runtime,hash/maphash: reuse hashSets to save memory pressure
Might help with OOMs on 32-bit platforms

Change-Id: Idd5129c61ecdfeedd5a9a18fce85dbba27cab946
Reviewed-on: https://go-review.googlesource.com/c/go/+/574475
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2024-03-26 21:33:31 +00:00
Lynn Boger
d3e5e9fdf6 crypto/aes: fix regression for ppc64x
CL 561080 introduced some failures for CBC and GCM crypto tests that are run during a build resulting in dashboard failures.

Tests that are failing:
- TestCBCEncrypterAES
- TestCBCDecrypterAES
- TestAESGCM
- TestGCMCounterWrap
- TestGCMAsm

This fixes those failures.

Change-Id: I90d6f8d279a3051cf951a1a9628afb8d0b5c2f17
Reviewed-on: https://go-review.googlesource.com/c/go/+/574076
Reviewed-by: Marten Seemann <martenseemann@gmail.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Paul Murphy <murp@ibm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Eli Bendersky <eliben@google.com>
Auto-Submit: Than McIntosh <thanm@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-03-26 19:58:31 +00:00
cui fliter
1e12eab870 all: fix a large number of comments
Partial typo corrections, following https://go.dev/wiki/Spelling

Change-Id: I2357906ff2ea04305c6357418e4e9556e20375d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/573776
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-03-26 19:58:28 +00:00
guoguangwu
4217877670 cmd/internal/ssa: fix typo in comment
Change-Id: Ib66830792ebb15538596f4bf4a51d2b3f05c7fe7
GitHub-Last-Rev: 947445916a
GitHub-Pull-Request: golang/go#66460
Reviewed-on: https://go-review.googlesource.com/c/go/+/573557
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Keith Randall <khr@google.com>
2024-03-26 19:58:25 +00:00