runtime: fix GoroutineProfile stacks not getting null terminated

Fix a regression introduced in CL 572396 causing goroutine stacks not
getting null terminated.

This bug impacts callers that reuse the []StackRecord slice for multiple
calls to GoroutineProfile. See https://github.com/felixge/fgprof/issues/33
for an example of the problem.

Add a test case to prevent similar regressions in the future. Use null
padding instead of null termination to be consistent with other profile
types and because it's less code to implement. Also fix the
ThreadCreateProfile code path.

Fixes #69243

Change-Id: I0b9414f6c694c304bc03a5682586f619e9bf0588
Reviewed-on: https://go-review.googlesource.com/c/go/+/609815
Reviewed-by: Tim King <taking@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>

runtime: fix MutexProfile missing root frames

Fix a regression introduced in CL 598515 causing runtime.MutexProfile
stack traces to omit their root frames.

In most cases this was merely causing the `runtime.goexit` frame to go
missing. But in the case of runtime._LostContendedRuntimeLock, an empty
stack trace was being produced.

Add a test that catches this regression by checking for a stack trace
with the `runtime.goexit` frame.

Also fix a separate problem in expandFrame that could cause
out-of-bounds panics when profstackdepth is set to a value below 32.
There is no test for this fix because profstackdepth can't be changed at
runtime right now.

Fixes #69335

Change-Id: I1600fe62548ea84981df0916d25072c3ddf1ea1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/611615
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Nick Ripley <nick.ripley@datadoghq.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
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cmd/go: add support for go get -u tool

Change-Id: I14d20c6c77d0d0a83cb547d954ba7f244166bc43
Reviewed-on: https://go-review.googlesource.com/c/go/+/563176
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Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>

all: enable alias type parameters GOEXPERIMENT by default

For #68778

Change-Id: I4b39f84665262251ca014d3f5fe74b2fd434d51e
Reviewed-on: https://go-review.googlesource.com/c/go/+/613236
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Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: David Chase <drchase@google.com>

runtime: print fatal messages without interleaving

Grab the print lock around the set of prints we use to report
fatal errors. This ensures that each fatal error gets reported
atomically instead of interleaved with other fatal errors.

Fixes #69447

Change-Id: Ib3569f0c8210fd7e19a7d8ef4bc114f07469f317
Reviewed-on: https://go-review.googlesource.com/c/go/+/615655
Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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go/types, types2: move Checker.indexedElts into literals.go where it belongs

The function is only used by Checker.compositeLit.
Also, now its go/types source can be gerated from the types2 source.
No other code changes.

Change-Id: I88b7ad371d809a5d9bf8e635d9e003ba0a71ab78
Reviewed-on: https://go-review.googlesource.com/c/go/+/615635
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Auto-Submit: Robert Griesemer <gri@google.com>

go/types, types2: implement underIs, coreType, coreString via typeset iterator

Remove remaining underIs methods and call underIs function instead.

Change-Id: Ic98430d3a56b85f6f4b35c4508c4c67dafbfa3f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/614240
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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runtime: disable epipe check for wasm platform

Pipe operation seems impossible for wasm build

Fixes #59099

Change-Id: Ibb526693dce4e867dabd92e5ace38a1adf18f401
GitHub-Last-Rev: d7dc3362717f4ddae2c026016812008d25783f4f
GitHub-Pull-Request: golang/go#69583
Reviewed-on: https://go-review.googlesource.com/c/go/+/614935
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>

cmd/compile: small cleanups to rewrite rule helpers

Change-Id: I50a19bd971176598bf8e4ef86ec98f008abe245c
Reviewed-on: https://go-review.googlesource.com/c/go/+/615198
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@google.com>

cmd/compile: use generics for isPowerOfTwo predicates

Change-Id: I097b53e9f13de6ff6eb18ae2261842b097f26390
Reviewed-on: https://go-review.googlesource.com/c/go/+/615197
Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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cmd/compile: simplify naming for arm64 bitfield accessors

They are already methods on an arm64-specific type, so they don't
need to have arm64-specific names.

Change-Id: I2be29907f9892891d88d52cced043ca248aa4e08
Reviewed-on: https://go-review.googlesource.com/c/go/+/615196
Auto-Submit: Keith Randall <khr@google.com>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>

go/types, types2: introduce typeset iterators

Preparation for removing the existing non-standard iterators
(is, underIs). Note that we cannot use typeset iterators in
range-over-func because the bootstrap compiler doesn't have
access to it yet.

While at it, move underIs from expr.go to under.go
and adjust some doc strings in typset.go to match
prevailing style in that file.

Change-Id: Iecd014eeb5b3fca56a807381c148c5f7a29bfb78
Reviewed-on: https://go-review.googlesource.com/c/go/+/614239
Reviewed-by: Tim King <taking@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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go/types, types2: check that alias type arguments satisfy constraints

Fixes #69576.

Change-Id: I8fc077970276977dd89fc2dd3867f2765d52e54e
Reviewed-on: https://go-review.googlesource.com/c/go/+/615275
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>

cmd/go: add support for go get -tool

Running `go get -tool example.com/m1` will add a tool line to your mod
file and add any missing dependencies.

Running `go get -tool example.com/m1@none` will drop the tool line from
your mod file.

For golang/go#48429

Change-Id: I07b4776f1f55eff588d08cb6649d94cc42a729d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/563175
Reviewed-by: Michael Matloob <matloob@golang.org>
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Reviewed-by: Sam Thanawalla <samthanawalla@google.com>

go/types, types2: follow-up on comment in CL 615195

Restate deferred call for readability.

Change-Id: I3725535b18fa4f1887e6c1976f8784e092b8f965
Reviewed-on: https://go-review.googlesource.com/c/go/+/615535
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
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cmd/go: add tools to "all"

Packages referenced by tool lines in go.mod files will now be included
in the module graph for the new "tool" package pattern and the "all"
package pattern.

For golang/go#48429

Change-Id: I128f6a50880814bd5395674426c9a7ee2ddc19bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/521959
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
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go/types, types2: print type parameters for Alias tyoes

Like for Named types, print type parameters for Alias types.

Add test case for Alias object string to existing test.
To make the test work, factor out the mechanism to set
GOEXPERIMENT=aliastypeparams at test time and use it
for this test as well.

No test case for un-instantiated generic type Alias type
string: there's no existing test framework, the code is
identical as for Named types, and these strings only appear
in tracing output. Tested manually.

Change-Id: I476d04d0b6a7c18b79be1d34a9e3e072941df83f
Reviewed-on: https://go-review.googlesource.com/c/go/+/615195
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Tim King <taking@google.com>
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cmd/go: prevent git from fetching during local only mode

Since we added a local context to git lookups, we need to be more
careful about fetching from remote.
We should not fetch when we are stamping a binary because that could
slow down builds.

For #50603
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I81a719b7609e8d30b32ffb3c12a05074c5fd0c22
Reviewed-on: https://go-review.googlesource.com/c/go/+/611916
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reflect: slightly improve iter tests

Change-Id: Ia0e3d668a2435b2ee72e1c641092445902168e4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/587875
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Reviewed-by: Ian Lance Taylor <iant@google.com>

crypto/internal/nistec: fix p256Select (PPC64) and p256SelectAffine (PPC64/s390x)

They are constant time, but some constants were incorrect. This
resulting in reading beyond the tables.

I've added linux specific tests which verify these functions are not
reading beyond the limits of their table.

Thank you Sun Yimin, @emmansun for catching this bug and suggesting
corrected constants.

Fixes #69080

Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-ppc64_power8,gotip-linux-ppc64le_power10,gotip-linux-ppc64le_power8,gotip-linux-ppc64le_power9

Change-Id: Id37e0e22b2278ea20adaa1c84cbb32c3f20d4cf7
Reviewed-on: https://go-review.googlesource.com/c/go/+/608816
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net,net/netip: implement the encoding.(Binary|Text)Appender

Implement the encoding.TextAppender interface for "net.IP".

Implement the encoding.(Binary|Text)Appender interfaces for
"netip.Addr", "netip.AddrPort" and "netip.Prefix".

"net.IP.MarshalText" also gets some performance improvements:

                          │     old      │                 new                 │
                          │    sec/op    │   sec/op     vs base                │
IPMarshalText/IPv4-8         66.06n ± 1%   14.55n ± 1%  -77.97% (p=0.000 n=10)
IPMarshalText/IPv6-8        117.00n ± 1%   63.18n ± 1%  -46.00% (p=0.000 n=10)
IPMarshalText/IPv6_long-8    137.8n ± 1%   111.3n ± 1%  -19.27% (p=0.000 n=10)
geomean                      102.1n        46.77n       -54.21%

                          │    old     │                   new                   │
                          │    B/op    │    B/op     vs base                     │
IPMarshalText/IPv4-8        32.00 ± 0%    0.00 ± 0%  -100.00% (p=0.000 n=10)
IPMarshalText/IPv6-8        48.00 ± 0%    0.00 ± 0%  -100.00% (p=0.000 n=10)
IPMarshalText/IPv6_long-8   96.00 ± 0%   48.00 ± 0%   -50.00% (p=0.000 n=10)

                          │    old     │                   new                   │
                          │ allocs/op  │ allocs/op   vs base                     │
IPMarshalText/IPv4-8        2.000 ± 0%   0.000 ± 0%  -100.00% (p=0.000 n=10)
IPMarshalText/IPv6-8        2.000 ± 0%   0.000 ± 0%  -100.00% (p=0.000 n=10)
IPMarshalText/IPv6_long-8   2.000 ± 0%   1.000 ± 0%   -50.00% (p=0.000 n=10)

All exported types in the standard library that implement the
"encoding.(Binary|Text)Marshaler" now also implement the
"encoding.(Binary|Text)Appender".

Fixes #62384

Change-Id: I7d3da8c5736a1ab9c54b9ac4bd2fbf850f9d1bd0
GitHub-Last-Rev: 5d27854725d957dd89d2ddc4342ca97999d10cb2
GitHub-Pull-Request: golang/go#69022
Reviewed-on: https://go-review.googlesource.com/c/go/+/607520
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Reviewed-by: Ian Lance Taylor <iant@google.com>

encoding/asn1: unmarshal bool values correctly dealing with the ANY type

Fixes #68241

Change-Id: I1ee81aa50c2f39f535ad27309e855f19acb2f2ea
Reviewed-on: https://go-review.googlesource.com/c/go/+/595796
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text/template/parse: use correct line number in error after comment

Fixes #69526

Change-Id: I42467ddec02e91f24bce87185bf8d7f16f8811b0
GitHub-Last-Rev: 039a5b6884aa65f34cecbfcd127861a703a048da
GitHub-Pull-Request: golang/go#69532
Reviewed-on: https://go-review.googlesource.com/c/go/+/614375
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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fmt: fix incorrect doc comment

I noticed that the comment incorrectly stated 'WriteString implemented WriteString', it should be 'implemented io.StringWriter' instead.

Change-Id: I844a8c805e5f0c32b5aea68c4bba6982f6fcc8a7
GitHub-Last-Rev: a0d93b6e9d3c2a508d1f3c0ce23e98274ec421fb
GitHub-Pull-Request: golang/go#69546
Reviewed-on: https://go-review.googlesource.com/c/go/+/614575
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os: skip TestReadlink sub-tests requiring symlinks when not enough
permissions are held

Some of the TestReadlink sub-tests require os.Symlink to succeed.
If the user doesn't have enough permissions to create symlinks, then
there is no point in running the test.

Change-Id: I06ec7e3ddf0016e804667bba0ee6ebe6baa01872
Reviewed-on: https://go-review.googlesource.com/c/go/+/614655
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Auto-Submit: Quim Muntal <quimmuntal@gmail.com>
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cmd/compile: remove obj.LSym(s) for assertI2I and assertI2I2

Change-Id: I85993a34b115a700ccdfea29df4e78c360e68b03
Reviewed-on: https://go-review.googlesource.com/c/go/+/615075
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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cmd/trace,internal/trace,runtime: refactor to access frames via range over func

Change-Id: Id0be0eb35ae8560bd5338ec296a086aaf4617db0
Reviewed-on: https://go-review.googlesource.com/c/go/+/608856
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internal/trace: refactor Stack.Frames to return iter.Seq

The Frames function is almost an iter.Seq, except for its bool return
value.

Since none of the callers in the Go tree rely on the bool, we can remove
it. However, doing so might still obscure the intended usage as an iterator.

This refactor changes the API to return iter.Seq, making the intended
usage explicit. Refactoring the existing callers to take advantage of
the new interface will be done in a follow-up CL.

Change-Id: I03e4d6d762910e418cc37d59a6c519eb7f39b3b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/608855
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text/template: support range-over-func

For #66107

Change-Id: I2fcd04bebe80346dbd244ab7ea09cbe6010b9d8e
GitHub-Last-Rev: 5ebf615db5889a04738c555c651e07c1fd287748
GitHub-Pull-Request: golang/go#68329
Reviewed-on: https://go-review.googlesource.com/c/go/+/596956
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Auto-Submit: Ian Lance Taylor <iant@google.com>

archive/{zip,tar}: fix Writer.AddFS to include empty directories

This change modifies the `(*Writer).AddFS` implementation in both `archive/zip`
and `archive/tar` to always write a directory header. This fixes a bug where
any empty directories in the fs were omitted when a zip or tar archive was
created from `AddFS` method.

Fixes #66831

Change-Id: Id32c9c747f9f65ec7db4aeefeaffa83567215bfc
Reviewed-on: https://go-review.googlesource.com/c/go/+/578415
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Carlos Amedee <carlos@golang.org>
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lib/time: update to 2024b/2024b

Commit generated by update.bash.

For #22487.

Change-Id: Ib54b6ea0b4422710ea64c63b16a6aea62b232835
GitHub-Last-Rev: f02cb1788fec4735f3e0dbf81f8f849480effb89
GitHub-Pull-Request: golang/go#69558
Reviewed-on: https://go-review.googlesource.com/c/go/+/614716
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
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cmd/go: skip TestScript on Plan 9 in short mode

TestScript is very slow on Plan 9 because this test
is particularly i/o intensive.

This is leading the plan9/386 and plan9/amd64 builders
to time out. This test was already skipped on plan9/arm
because arm is part of the "slow architectures" list.

This change skips TestScript on Plan 9 on short mode.

Change-Id: I3e68046dac825cd14fa8daca601c492cf11c6fff
Reviewed-on: https://go-review.googlesource.com/c/go/+/614855
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: David du Colombier <0intro@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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cmd/mod/edit: disallow relative tool paths

Allowing relative paths in `go.mod` introduced an inconsistency as we do
not allow relative package paths anywhere else.

For golang/go#48429

Change-Id: I5ef88aec4fe35f7e94a0cf6288e94099f3ca7a0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/614555
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
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testing: enable better loop time measurement for benchmarking.

With b.Loop() in place, the time measurement of loop scaling could be improved to be tighter. By identifying the first call to b.Loop(), we can avoid measuring the expensive ramp-up time by reset the timer tightly before the loop starts. The remaining loop scaling logic of b.N style loop is largely reused.

For #61515.

Change-Id: Ia7b8f0a8838f57c00ac6c5ef779d86f8d713c9b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/612835
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Reviewed-by: Junyang Shao <shaojunyang@google.com>
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testing: implement testing.B.Loop

Initial implementation for testing.B.Loop,
right now the calculation of b.N are still done in the old fasion way,
as of now b.Loop is merely an alias for the old loop over b.N.

For #61515.

Change-Id: If211d0acc5f0c33df530096dceafe0b947ab0c8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/608798
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go/types, types2: clarify Named, Alias, TypeName, Object

Updates #65855
Updates #66890

Change-Id: I167c9de818049cae02f0d99f8e0fb4017e07bea9
Reviewed-on: https://go-review.googlesource.com/c/go/+/604476
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cmd/objdump: add loong64 disassembler support

This CL provides vendor support for loong64 disassembler gnu and plan9 syntax.

cd $GOROOT/src/cmd
go get golang.org/x/arch@master
go mod tidy
go mod vendor

Change-Id: Ic8b888de0aa11cba58cbf559f8f69337d1d69309
Reviewed-on: https://go-review.googlesource.com/c/go/+/609015
Reviewed-by: Meidan Li <limeidan@loongson.cn>
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Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>

reflect: remove calling mapiterkey, mapiterelem

It makes use of the hiter structure which matches runtime.hiter's.

This change mainly improves the performance of Next method of MapIter.

goos: darwin
goarch: arm64
pkg: reflect
cpu: Apple M2
              │  ./old.txt  │              ./new.txt              │
              │   sec/op    │   sec/op     vs base                │
MapIterNext-8   61.95n ± 0%   54.95n ± 0%  -11.28% (p=0.000 n=10)

for the change of `test/escape_reflect.go`:
removing mapiterkey, mapiterelem would cause leaking MapIter content
when calling SetIterKey and SetIterValue,
and this may cause map bucket to be allocated on heap instead of stack.
Reproduce:
```
{
  m := map[int]int{1: 2} // escapes to heap after this change
  it := reflect.ValueOf(m).MapRange()
  it.Next()
  var k, v int
  reflect.ValueOf(&k).Elem().SetIterKey(it)
  reflect.ValueOf(&v).Elem().SetIterValue(it)
  println(k, v)
}
```
This CL would not introduce abi.NoEscape to fix this. It may need futher
optimization and tests on hiter field usage and its escape analysis.

Fixes #69416

Change-Id: Ibaa33bcf86228070b4a505b9512680791aa59f04
Reviewed-on: https://go-review.googlesource.com/c/go/+/612616
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cmd/go: print toolchain switching with GODEBUG=toolchaintrace

This CL introduces the ability to print information about the toolchain switch used in the
go command, controlled by the `toolchaintrace` setting. This setting defaults to `toolchaintrace=0`,
meaning no information is printed. Setting it to `toolchaintrace=1` will cause the go command
to print a message indicating the toolchain used and where it was found.

Fixes: #63939
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Change-Id: Idc58e3d5bc76573aa48e1f7df352caa13004c25e
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net/netip: cover more AddrPort.String cases in tests

TestInvalidAddrPortString currently only tests for invalid AddrPorts.
Add some valid cases as well to improve test coverage.

Change-Id: Iaa9192e48a61daed6f7ce7d680d602a021570bdc
Reviewed-on: https://go-review.googlesource.com/c/go/+/613795
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cmd/compile: fix wrong esacpe analysis for rangefunc

CL 584596 "-range<N>" suffix to the name of closure generated for a
rangefunc loop body. However, this breaks the condition that escape
analysis uses for checking whether a closure contains within function,
which is "F.funcN" for outer function "F" and closure "funcN".

Fixing this by adding new "-rangeN" to the condition.

Fixes #69434
Fixes #69507

Change-Id: I411de8f63b69a6514a9e9504d49d62e00ce4115d
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cmd/internal/obj/s390x: fix m6 field encoding for VSTRC instruction on s390x

M6 field for all extended mnemonics of VSTRC set to zero
This fixes VSTRC codegen to emit correctly  and added testcases for all
the extended mnemonics.

Fixes #69216

Change-Id: I2a1b7fb61d6bd6444286eab56a506225c90b75e7
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cmd/cgo: use strings.CutPrefix

Change-Id: Ie3f35183e88d544559743394c34b55483fdf59aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/613775
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go/types, types2: better error message when type argument cannot use operator

Fixes #63524

Change-Id: Id33936b9bcfb6a7333c6d084247044bba2f29219
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net/netip: use const for max address length

Makes it consistent with other code in net/netip, also constants
are visible through LSP hover, which makes it easier to see the size.

Change-Id: I3d02c860ac3c61cc037eaca5418297f78698c3f8
GitHub-Last-Rev: 785a8d58c372f5e1faa2e43dd1991d7040e36603
GitHub-Pull-Request: golang/go#69468
Reviewed-on: https://go-review.googlesource.com/c/go/+/613356
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os/signal: use slices.Delete

Change-Id: I212a0f4f97e1c938f56981f278464081cfd75e85
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cmd/go: update go help packages doc on all pattern to focus on modules

Reword the paragraph to focus on modules rather than GOPATH mode.

Change-Id: Ide33d502311b3539018f167386a92a94ff955f1f
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cmd/compile: improve the ssa documentation.

The auxiliary field could be better documented as it appears in a lot of the operands.
This CL documents and points the user to the code for further information.

Change-Id: I34a73af488358c9799e286f3b5ee4b08639ce608
Reviewed-on: https://go-review.googlesource.com/c/go/+/613615
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runtime: move getclosureptr to internal/runtime/sys

Moving these intrinsics to a base package enables other internal/runtime
packages to use them.

There is no immediate need for getclosureptr outside of runtime, but it
is moved for consistency with the other intrinsics.

For #54766.

Change-Id: Ia68b16a938c8cb84cb222469db28e3a83861be5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/613262
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runtime: move getcallersp to internal/runtime/sys

Moving these intrinsics to a base package enables other internal/runtime
packages to use them.

For #54766.

Change-Id: I45a530422207dd94b5ad4eee51216c9410a84040
Reviewed-on: https://go-review.googlesource.com/c/go/+/613261
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os: TestPipeThreads: remove openbsd special case

Since CL 393354 this should no longer be necessary.

Change-Id: Ifec4ef483f9c06d9b49827327dd6708db146d886
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runtime: move getcallerpc to internal/runtime/sys

Moving these intrinsics to a base package enables other internal/runtime
packages to use them.

For #54766.

Change-Id: I0b3eded3bb45af53e3eb5bab93e3792e6a8beb46
Reviewed-on: https://go-review.googlesource.com/c/go/+/613260
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go/types, types2: slightly simplify rangeKeyVal function

Compute the signature type of an iterator function argument
only once. This eliminates the need for two separate toSig
calls.

Change-Id: Ifeb33d21e381010d2012d74eac045856f1cca312
Reviewed-on: https://go-review.googlesource.com/c/go/+/613635
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os/user: fix Current().GroupIds() for AD joined users on Windows

This CL special-case User.GroupIds to get the group IDs from the user's
token when the user is the current user.

This approach is more efficient than calling NetUserGetLocalGroups.
It is also more reliable for users joined to an Active Directory domain,
where NetUserGetLocalGroups is likely to fail.

Updates #26041.
Fixes #62712.

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unique: handle zero-size types

Fixes #69458

Change-Id: Ic7fda7f556522780b2819138dfc1277137398692
Reviewed-on: https://go-review.googlesource.com/c/go/+/613397
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math/big: add clarifying (internal) comment

Follow-up on CL 467555.

Change-Id: I1815b5def656ae4b86c31385ad0737f0465fa2d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/613535
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runtime: remove go:noescape from getcallerpc/sp

getcallerpc and getcallerps dropped their arguments in CL 65474 and CL
109596, respectively.

Without an argument there is nothing to escape.

Change-Id: I24f300d039a2a0615ca0c3ea247125676a6237d1
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cmd/compile: remove ir.OGETCALLERPC

Nothing ever creates this op, so it can be safely removed. Note that SSA
still intrinsifies runtime.getcallerpc.

The similar ir.OGETCALLERSP is still used for defer handling in
typecheck/func.go:tcRecover.

For #54766.

Change-Id: I6bdb2072af2c068080ae977c0cbd4684d0c7c752
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cmd/compile/internal/typecheck: remove getcallerpc/sp builtin signature

The compiler never does a lookup of these (LookupRuntime), so they
aren't needed here.

getcallerpc is only used in intrinsification. getcallersp is used in
intrinsification and defer handling via a direct OGETCALLERSP op.

For #54766.

Change-Id: I1666ceef3360a84573ae5b41b1c51d9205de7235
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math/big: simplify divBasic ujn assignment

Rather than conditionally assigning ujn, initialise ujn above the
loop to invent the leading 0 for u, then unconditionally load ujn
at the bottom of the loop. This code operates on the basis that
n >= 2, hence j+n-1 is always greater than zero.

Change-Id: I1272ef30c787ed8707ae8421af2adcccc776d389
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cmd/preprofile, runtime/coverage: add package comment

As https://go.dev/doc/comment#package says, every package
should have a package comment. Command cmd/preprofile had
one, it was just not being recognized due to a blank line.

For #51430.
For #58102.

Change-Id: I73e31158e0f244f6453728ab68c5c8da4cfb38b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/613375
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

unicode/utf8: speedup RuneCount

CL 612617 did speedup RuneCountInString, thus we can now use it to
speedup RuneCount, too.

name                         old time/op    new time/op    delta
RuneCountTenASCIIChars-8       8.69ns ± 1%    3.59ns ± 2%  -58.66%  (p=0.000 n=9+9)
RuneCountTenJapaneseChars-8    49.8ns ± 2%    40.9ns ± 0%  -17.94%  (p=0.000 n=10+8)

Change-Id: I311750c00efc79af35fb0ca3b482a5d94e0a7977
Reviewed-on: https://go-review.googlesource.com/c/go/+/612955
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Tim King <taking@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

unicode/utf8: add test that RuneCount does zero allocations

See disccusion in CL 612955.

Change-Id: I2de582321648f1798929ffb80d2f087e41146ead
Reviewed-on: https://go-review.googlesource.com/c/go/+/613315
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>

test: add test for issue 24755

Fixes #24755

Change-Id: I00b276c5c2acb227d42a069d1af6027e4b499d31
Reviewed-on: https://go-review.googlesource.com/c/go/+/613115
Auto-Submit: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>

all: add test for issue 20027

Fixes #20027

Change-Id: Ia616d43c0affa7b927ddfb53755072c94ba27917
Reviewed-on: https://go-review.googlesource.com/c/go/+/612618
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tim King <taking@google.com>

cmd: make use of maps.{Copy, Clone}

Change-Id: I8a38b4c71c34d3544ee32be9c6e767bb1099a720
GitHub-Last-Rev: ff4cb4e91be3936465635f99d061f02999640ed9
GitHub-Pull-Request: golang/go#69424
Reviewed-on: https://go-review.googlesource.com/c/go/+/612735
Reviewed-by: Keith Randall <khr@golang.org>
Commit-Queue: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>

encoding/gob: make use of maps.Clone

Change-Id: I6a23219a9e05350bdd9205e19165d5944f15de31
GitHub-Last-Rev: 8c295bf55feaa07cd487e6015029c4682a1480b0
GitHub-Pull-Request: golang/go#69429
Reviewed-on: https://go-review.googlesource.com/c/go/+/612719
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

archive/tar: make use of maps.Clone

Change-Id: I2a9d849410002dae1f49a53597298c1903954d12
GitHub-Last-Rev: 20a56b4161dd0864f67d427301cb28563f2c3d50
GitHub-Pull-Request: golang/go#69427
Reviewed-on: https://go-review.googlesource.com/c/go/+/612737
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/compile: optimize math.Float64(32)bits and math.Float64(32)frombits on loong64

Use float <-> int register moves without conversion instead of stores
and loads to move float <-> int values like arm64 and mips64.

goos: linux
goarch: loong64
pkg: math
cpu: Loongson-3A6000 @ 2500.00MHz
                    │  bench.old   │               bench.new                │
                    │    sec/op    │    sec/op     vs base                  │
Acos                   15.98n ± 0%    15.94n ± 0%   -0.25% (p=0.000 n=20)
Acosh                  27.75n ± 0%    25.56n ± 0%   -7.89% (p=0.000 n=20)
Asin                   15.85n ± 0%    15.76n ± 0%   -0.57% (p=0.000 n=20)
Asinh                  39.79n ± 0%    37.69n ± 0%   -5.28% (p=0.000 n=20)
Atan                   7.261n ± 0%    7.242n ± 0%   -0.27% (p=0.000 n=20)
Atanh                  28.30n ± 0%    27.62n ± 0%   -2.40% (p=0.000 n=20)
Atan2                  15.85n ± 0%    15.75n ± 0%   -0.63% (p=0.000 n=20)
Cbrt                   27.02n ± 0%    21.08n ± 0%  -21.98% (p=0.000 n=20)
Ceil                   2.830n ± 1%    2.896n ± 1%   +2.31% (p=0.000 n=20)
Copysign              0.8022n ± 0%   0.8004n ± 0%   -0.22% (p=0.000 n=20)
Cos                    11.64n ± 0%    11.61n ± 0%   -0.26% (p=0.000 n=20)
Cosh                   35.98n ± 0%    33.44n ± 0%   -7.05% (p=0.000 n=20)
Erf                    10.09n ± 0%    10.08n ± 0%   -0.10% (p=0.000 n=20)
Erfc                   11.40n ± 0%    11.35n ± 0%   -0.44% (p=0.000 n=20)
Erfinv                 12.31n ± 0%    12.29n ± 0%   -0.16% (p=0.000 n=20)
Erfcinv                12.16n ± 0%    12.17n ± 0%   +0.08% (p=0.000 n=20)
Exp                    28.41n ± 0%    26.44n ± 0%   -6.95% (p=0.000 n=20)
ExpGo                  28.68n ± 0%    27.07n ± 0%   -5.60% (p=0.000 n=20)
Expm1                  17.21n ± 0%    16.75n ± 0%   -2.67% (p=0.000 n=20)
Exp2                   24.71n ± 0%    23.01n ± 0%   -6.88% (p=0.000 n=20)
Exp2Go                 25.17n ± 0%    23.91n ± 0%   -4.99% (p=0.000 n=20)
Abs                   0.8004n ± 0%   0.8004n ± 0%        ~ (p=0.224 n=20)
Dim                    1.201n ± 0%    1.201n ± 0%        ~ (p=1.000 n=20) ¹
Floor                  2.848n ± 0%    2.859n ± 0%   +0.39% (p=0.000 n=20)
Max                    3.074n ± 0%    3.071n ± 0%        ~ (p=0.481 n=20)
Min                    3.179n ± 0%    3.176n ± 0%   -0.09% (p=0.003 n=20)
Mod                    49.62n ± 0%    44.82n ± 0%   -9.67% (p=0.000 n=20)
Frexp                  7.604n ± 0%    6.803n ± 0%  -10.53% (p=0.000 n=20)
Gamma                  18.01n ± 0%    17.61n ± 0%   -2.22% (p=0.000 n=20)
Hypot                  7.204n ± 0%    7.604n ± 0%   +5.55% (p=0.000 n=20)
HypotGo                7.204n ± 0%    7.604n ± 0%   +5.56% (p=0.000 n=20)
Ilogb                  6.003n ± 0%    6.003n ± 0%        ~ (p=0.407 n=20)
J0                     76.43n ± 0%    76.24n ± 0%   -0.25% (p=0.000 n=20)
J1                     76.44n ± 0%    76.44n ± 0%        ~ (p=1.000 n=20)
Jn                     168.2n ± 0%    168.5n ± 0%   +0.18% (p=0.000 n=20)
Ldexp                  8.804n ± 0%    7.604n ± 0%  -13.63% (p=0.000 n=20)
Lgamma                 19.01n ± 0%    19.01n ± 0%        ~ (p=0.695 n=20)
Log                    19.38n ± 0%    19.12n ± 0%   -1.34% (p=0.000 n=20)
Logb                   6.003n ± 0%    6.003n ± 0%        ~ (p=1.000 n=20)
Log1p                  18.57n ± 0%    16.72n ± 0%   -9.96% (p=0.000 n=20)
Log10                  20.67n ± 0%    20.45n ± 0%   -1.06% (p=0.000 n=20)
Log2                   9.605n ± 0%    8.804n ± 0%   -8.34% (p=0.000 n=20)
Modf                   4.402n ± 0%    4.402n ± 0%        ~ (p=1.000 n=20)
Nextafter32            7.204n ± 0%    5.603n ± 0%  -22.22% (p=0.000 n=20)
Nextafter64            6.803n ± 0%    6.003n ± 0%  -11.76% (p=0.000 n=20)
PowInt                 39.62n ± 0%    37.22n ± 0%   -6.06% (p=0.000 n=20)
PowFrac                120.9n ± 0%    108.9n ± 0%   -9.93% (p=0.000 n=20)
Pow10Pos               1.601n ± 0%    1.601n ± 0%        ~ (p=0.487 n=20)
Pow10Neg               2.675n ± 0%    2.675n ± 0%        ~ (p=1.000 n=20)
Round                  3.018n ± 0%    2.401n ± 0%  -20.46% (p=0.000 n=20)
RoundToEven            3.822n ± 0%    3.001n ± 0%  -21.48% (p=0.000 n=20)
Remainder              45.62n ± 0%    42.42n ± 0%   -7.01% (p=0.000 n=20)
Signbit               0.9075n ± 0%   0.8004n ± 0%  -11.81% (p=0.000 n=20)
Sin                    12.65n ± 0%    12.65n ± 0%        ~ (p=0.503 n=20)
Sincos                 14.81n ± 0%    14.60n ± 0%   -1.42% (p=0.000 n=20)
Sinh                   36.75n ± 0%    35.11n ± 0%   -4.46% (p=0.000 n=20)
SqrtIndirect           1.201n ± 0%    1.201n ± 0%        ~ (p=1.000 n=20) ¹
SqrtLatency            4.002n ± 0%    4.002n ± 0%        ~ (p=1.000 n=20)
SqrtIndirectLatency    4.002n ± 0%    4.002n ± 0%        ~ (p=1.000 n=20)
SqrtGoLatency          52.85n ± 0%    40.82n ± 0%  -22.76% (p=0.000 n=20)
SqrtPrime              887.4n ± 0%    887.4n ± 0%        ~ (p=0.751 n=20)
Tan                    13.95n ± 0%    13.97n ± 0%   +0.18% (p=0.000 n=20)
Tanh                   36.79n ± 0%    34.89n ± 0%   -5.16% (p=0.000 n=20)
Trunc                  2.849n ± 0%    2.861n ± 0%   +0.42% (p=0.000 n=20)
Y0                     77.44n ± 0%    77.64n ± 0%   +0.26% (p=0.000 n=20)
Y1                     74.41n ± 0%    74.33n ± 0%   -0.11% (p=0.000 n=20)
Yn                     158.7n ± 0%    159.0n ± 0%   +0.19% (p=0.000 n=20)
Float64bits           0.8774n ± 0%   0.4002n ± 0%  -54.39% (p=0.000 n=20)
Float64frombits       0.8042n ± 0%   0.4002n ± 0%  -50.24% (p=0.000 n=20)
Float32bits           1.1230n ± 0%   0.5336n ± 0%  -52.48% (p=0.000 n=20)
Float32frombits       1.0670n ± 0%   0.8004n ± 0%  -24.99% (p=0.000 n=20)
FMA                    2.001n ± 0%    2.001n ± 0%        ~ (p=0.605 n=20)
geomean                10.87n         10.10n        -7.15%
¹ all samples are equal

goos: linux
goarch: loong64
pkg: math
cpu: Loongson-3A5000 @ 2500.00MHz
                    │  bench.old   │              bench.new               │
                    │    sec/op    │    sec/op     vs base                │
Acos                   33.10n ± 0%    31.95n ± 2%   -3.46% (p=0.000 n=20)
Acosh                  58.38n ± 0%    50.44n ± 0%  -13.60% (p=0.000 n=20)
Asin                   32.70n ± 0%    31.94n ± 0%   -2.32% (p=0.000 n=20)
Asinh                  57.65n ± 0%    50.83n ± 0%  -11.82% (p=0.000 n=20)
Atan                   14.21n ± 0%    14.21n ± 0%        ~ (p=0.501 n=20)
Atanh                  60.86n ± 0%    54.44n ± 0%  -10.56% (p=0.000 n=20)
Atan2                  32.02n ± 0%    34.02n ± 0%   +6.25% (p=0.000 n=20)
Cbrt                   55.58n ± 0%    40.64n ± 0%  -26.88% (p=0.000 n=20)
Ceil                   9.566n ± 0%    9.566n ± 0%        ~ (p=0.463 n=20)
Copysign              0.8005n ± 0%   0.8005n ± 0%        ~ (p=0.806 n=20)
Cos                    18.02n ± 0%    18.02n ± 0%        ~ (p=0.191 n=20)
Cosh                   64.44n ± 0%    65.64n ± 0%   +1.86% (p=0.000 n=20)
Erf                    16.15n ± 0%    16.16n ± 0%        ~ (p=0.770 n=20)
Erfc                   18.71n ± 0%    18.83n ± 0%   +0.61% (p=0.000 n=20)
Erfinv                 19.33n ± 0%    19.34n ± 0%        ~ (p=0.513 n=20)
Erfcinv                18.90n ± 0%    19.78n ± 0%   +4.63% (p=0.000 n=20)
Exp                    50.04n ± 0%    49.66n ± 0%   -0.75% (p=0.000 n=20)
ExpGo                  50.03n ± 0%    50.03n ± 0%        ~ (p=0.723 n=20)
Expm1                  28.41n ± 0%    28.27n ± 0%   -0.49% (p=0.000 n=20)
Exp2                   50.08n ± 0%    51.23n ± 0%   +2.31% (p=0.000 n=20)
Exp2Go                 49.77n ± 0%    49.89n ± 0%   +0.24% (p=0.000 n=20)
Abs                   0.8009n ± 0%   0.8006n ± 0%        ~ (p=0.317 n=20)
Dim                    1.987n ± 0%    1.993n ± 0%   +0.28% (p=0.001 n=20)
Floor                  8.543n ± 0%    8.548n ± 0%        ~ (p=0.509 n=20)
Max                    6.670n ± 0%    6.672n ± 0%        ~ (p=0.335 n=20)
Min                    6.694n ± 0%    6.694n ± 0%        ~ (p=0.459 n=20)
Mod                    56.44n ± 0%    53.23n ± 0%   -5.70% (p=0.000 n=20)
Frexp                  8.409n ± 0%    7.606n ± 0%   -9.55% (p=0.000 n=20)
Gamma                  35.64n ± 0%    35.23n ± 0%   -1.15% (p=0.000 n=20)
Hypot                  11.21n ± 0%    10.61n ± 0%   -5.31% (p=0.000 n=20)
HypotGo                11.50n ± 0%    11.01n ± 0%   -4.30% (p=0.000 n=20)
Ilogb                  7.606n ± 0%    6.804n ± 0%  -10.54% (p=0.000 n=20)
J0                     125.3n ± 0%    126.5n ± 0%   +0.96% (p=0.000 n=20)
J1                     124.9n ± 0%    125.3n ± 0%   +0.32% (p=0.000 n=20)
Jn                     264.3n ± 0%    265.9n ± 0%   +0.61% (p=0.000 n=20)
Ldexp                  9.606n ± 0%    9.204n ± 0%   -4.19% (p=0.000 n=20)
Lgamma                 38.82n ± 0%    38.85n ± 0%   +0.06% (p=0.019 n=20)
Log                    38.44n ± 0%    28.04n ± 0%  -27.06% (p=0.000 n=20)
Logb                   8.405n ± 0%    7.605n ± 0%   -9.52% (p=0.000 n=20)
Log1p                  31.62n ± 0%    27.11n ± 0%  -14.26% (p=0.000 n=20)
Log10                  38.83n ± 0%    28.42n ± 0%  -26.81% (p=0.000 n=20)
Log2                   11.21n ± 0%    10.41n ± 0%   -7.14% (p=0.000 n=20)
Modf                   5.204n ± 0%    5.205n ± 0%        ~ (p=0.983 n=20)
Nextafter32            8.809n ± 0%    7.208n ± 0%  -18.18% (p=0.000 n=20)
Nextafter64            8.405n ± 0%    8.406n ± 0%   +0.01% (p=0.007 n=20)
PowInt                 48.83n ± 0%    44.78n ± 0%   -8.28% (p=0.000 n=20)
PowFrac                146.9n ± 0%    142.1n ± 0%   -3.23% (p=0.000 n=20)
Pow10Pos               2.334n ± 0%    2.333n ± 0%        ~ (p=0.110 n=20)
Pow10Neg               4.803n ± 0%    4.803n ± 0%        ~ (p=0.130 n=20)
Round                  4.816n ± 0%    3.819n ± 0%  -20.70% (p=0.000 n=20)
RoundToEven            5.735n ± 0%    5.204n ± 0%   -9.26% (p=0.000 n=20)
Remainder              52.05n ± 0%    49.64n ± 0%   -4.63% (p=0.000 n=20)
Signbit                1.201n ± 0%    1.001n ± 0%  -16.65% (p=0.000 n=20)
Sin                    20.63n ± 0%    20.64n ± 0%   +0.05% (p=0.040 n=20)
Sincos                 23.82n ± 0%    24.62n ± 0%   +3.36% (p=0.000 n=20)
Sinh                   71.25n ± 0%    68.44n ± 0%   -3.94% (p=0.000 n=20)
SqrtIndirect           2.001n ± 0%    2.001n ± 0%        ~ (p=0.182 n=20)
SqrtLatency            4.003n ± 0%    4.003n ± 0%        ~ (p=0.754 n=20)
SqrtIndirectLatency    4.003n ± 0%    4.003n ± 0%        ~ (p=0.773 n=20)
SqrtGoLatency          60.84n ± 0%    81.26n ± 0%  +33.56% (p=0.000 n=20)
SqrtPrime              1.791µ ± 0%    1.791µ ± 0%        ~ (p=0.784 n=20)
Tan                    27.22n ± 0%    27.22n ± 0%        ~ (p=0.819 n=20)
Tanh                   70.88n ± 0%    69.04n ± 0%   -2.60% (p=0.000 n=20)
Trunc                  8.543n ± 0%    8.543n ± 0%        ~ (p=0.784 n=20)
Y0                     122.9n ± 0%    122.9n ± 0%        ~ (p=0.559 n=20)
Y1                     123.3n ± 0%    121.7n ± 0%   -1.30% (p=0.000 n=20)
Yn                     263.0n ± 0%    262.6n ± 0%   -0.15% (p=0.000 n=20)
Float64bits           1.2010n ± 0%   0.6004n ± 0%  -50.01% (p=0.000 n=20)
Float64frombits       1.2010n ± 0%   0.6004n ± 0%  -50.01% (p=0.000 n=20)
Float32bits           1.7010n ± 0%   0.8005n ± 0%  -52.94% (p=0.000 n=20)
Float32frombits       1.5010n ± 0%   0.8005n ± 0%  -46.67% (p=0.000 n=20)
FMA                    2.001n ± 0%    2.001n ± 0%        ~ (p=0.238 n=20)
geomean                17.41n         16.15n        -7.19%

Change-Id: I0a0c263af2f07203eab1782e69c706f20c689d8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/604737
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crypto/md5: provide optimised assembly for riscv64

Provide an optimised assembly implementation of MD5 for RISC-V.
There are significant performance improvements.  The assembler takes
advantage of Zbb instructions when they are available.

Results for the VisionFive 2 running Ubuntu 24.04 with
GORISCV64=rva20u64.

goos: linux
goarch: riscv64
pkg: crypto/md5
                    │ md5_go.txt  │             md5_ass.txt             │
                    │   sec/op    │   sec/op     vs base                │
Hash8Bytes            1.202µ ± 0%   1.220µ ± 0%   +1.50% (p=0.000 n=10)
Hash64                1.665µ ± 0%   1.518µ ± 0%   -8.83% (p=0.000 n=10)
Hash128               2.165µ ± 0%   1.885µ ± 0%  -12.94% (p=0.000 n=10)
Hash256               3.162µ ± 0%   2.613µ ± 0%  -17.38% (p=0.000 n=10)
Hash512               5.146µ ± 0%   4.063µ ± 0%  -21.05% (p=0.000 n=10)
Hash1K                9.115µ ± 0%   6.959µ ± 0%  -23.65% (p=0.000 n=10)
Hash8K                64.68µ ± 0%   47.52µ ± 0%  -26.54% (p=0.000 n=10)
Hash1M                8.131m ± 0%   5.936m ± 0%  -27.00% (p=0.000 n=10)
Hash8M                65.06m ± 0%   47.50m ± 0%  -26.99% (p=0.000 n=10)
Hash8BytesUnaligned   1.210µ ± 0%   1.199µ ± 0%   -0.91% (p=0.000 n=10)
Hash1KUnaligned       9.114µ ± 0%   8.266µ ± 0%   -9.30% (p=0.000 n=10)
Hash8KUnaligned       64.68µ ± 0%   57.97µ ± 0%  -10.38% (p=0.000 n=10)
geomean               22.37µ        18.83µ       -15.82%

Results for the VisionFive 2 running Ubuntu 24.04 with
GORISCV64=rva22u64.

goos: linux
goarch: riscv64
pkg: crypto/md5
                    │ md5_g22.txt │             md5_a22.txt             │
                    │   sec/op    │   sec/op     vs base                │
Hash8Bytes            1.175µ ± 0%   1.002µ ± 0%  -14.72% (p=0.000 n=10)
Hash64                1.575µ ± 0%   1.274µ ± 0%  -19.11% (p=0.000 n=10)
Hash128               2.033µ ± 0%   1.587µ ± 0%  -21.92% (p=0.000 n=10)
Hash256               2.943µ ± 0%   2.209µ ± 0%  -24.93% (p=0.000 n=10)
Hash512               4.755µ ± 0%   3.443µ ± 0%  -27.58% (p=0.000 n=10)
Hash1K                8.378µ ± 0%   5.910µ ± 0%  -29.46% (p=0.000 n=10)
Hash8K                59.12µ ± 0%   40.45µ ± 0%  -31.58% (p=0.000 n=10)
Hash1M                7.426m ± 0%   5.056m ± 0%  -31.92% (p=0.000 n=10)
Hash8M                59.41m ± 0%   40.45m ± 0%  -31.91% (p=0.000 n=10)
Hash8BytesUnaligned   1.169µ ± 0%   1.012µ ± 0%  -13.43% (p=0.000 n=10)
Hash1KUnaligned       8.379µ ± 0%   7.213µ ± 0%  -13.91% (p=0.000 n=10)
Hash8KUnaligned       59.12µ ± 0%   50.90µ ± 0%  -13.91% (p=0.000 n=10)
geomean               20.83µ        15.99µ       -23.21%

Change-Id: I61e3fa802c2cc50e0b5f71f151b4741691ccb481
Reviewed-on: https://go-review.googlesource.com/c/go/+/527936
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cmd/go: populate build info for test mains

Before this change, test binaries didn't have build info populated on them
unless they were tests for package main. Now we generate them for all
test binaries so that they can be inspected like other binaries.

We don't need to add the default GODEBUG in printLinkerConfig because it
will now always be present on the build info, and when build info is
present we use it to generate the hash.

Fixes #33976

Change-Id: Ib4f51c04f87df3c7f2f21c400ab446e70d66a101
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cmd/compile: optimize RotateLeft8/16 on loong64

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A6000 @ 2500.00MHz
             │  bench.old   │              bench.new               │
             │    sec/op    │    sec/op     vs base                │
RotateLeft8     1.401n ± 0%    1.201n ± 0%  -14.28% (p=0.000 n=20)
RotateLeft16   1.4010n ± 0%   0.8032n ± 0%  -42.67% (p=0.000 n=20)
geomean         1.401n        0.9822n       -29.90%

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A5000 @ 2500.00MHz
             │  bench.old  │              bench.new              │
             │   sec/op    │   sec/op     vs base                │
RotateLeft8    1.576n ± 0%   1.310n ± 0%  -16.88% (p=0.000 n=20)
RotateLeft16   1.576n ± 0%   1.166n ± 0%  -26.02% (p=0.000 n=20)
geomean        1.576n        1.236n       -21.58%

Change-Id: I39c18306be0b8fd31b57bd0911714abd1783b50e
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cmd/internal/obj/loong64: add support for instructions FSCALEB{F/D} and FLOGB{F/D}

Go asm syntax:
FSCALEB{F/D} FK, FJ, FD
FLOGB{F/D} FJ, FD

Equivalent platform assembler syntax:
fscaleb.{s/d} fd, fj, fk
flogb.{s/d} fd, fj

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

Change-Id: I6cd75c7605adbb572dae86d6470ec7cf20ce0f6c
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go/ast: note that in BasicLit CHARs and STRINGs are quoted

This reapplies CL 244960, for some reason CL 264181 removed this comment.

Updates #39590

Change-Id: Ia37268812c6929020b0cd583d2c7fa48a098377c
GitHub-Last-Rev: 2acee37fedc7f2edfffec4f2e4c465708f210a97
GitHub-Pull-Request: golang/go#69019
Reviewed-on: https://go-review.googlesource.com/c/go/+/607517
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net/http: make use of maps.Copy

Change-Id: If8e02760fe1fb095ecebc306fd98662a51a1f66f
GitHub-Last-Rev: 7b8099f1fed04271c121cdde1c3abd8822955368
GitHub-Pull-Request: golang/go#69426
Reviewed-on: https://go-review.googlesource.com/c/go/+/612736
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text/template: make use of maps.Copy for Template.Clone

Change-Id: I1da668223b599867afe5483384b458482624adc5
GitHub-Last-Rev: 0a6bd6e84ac4c744d27d6ac87d877889209f386d
GitHub-Pull-Request: golang/go#69423
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internal/testenv: add MustHaveSource, rm HasSrc

All the users of HasSrc call t.Skip anyway, so let's move it to testenv.

Fix go/build to use MustHaveSource rather than MustHaveGoBuild where
appropriate.

Change-Id: I052bf96fd5a5780c1930da5b3a52b7a8dbebea46
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cmd/link/internal: use slices.Contains

Change-Id: Ib437e272e0eb7d1b0969a4ed94d264ca3aad7c59
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go/types, types2: add initial README.md

Change-Id: I0a5ce4d50d65b803b001d01d627e8e6d2af66d6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/611335
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unicode/utf8: use range loop in RuneCountInString

CL 28490 speeded up non-ASCII rune decoding, and ASCII rune is also
decoded faster now.

Benchmark using:

    perflock -governor 70% go test -run=NONE -bench=BenchmarkRuneCountInString -count=10

Result:

name                                 old time/op  new time/op  delta
RuneCountInStringTenASCIIChars-8     10.2ns ± 0%   7.1ns ± 1%  -30.53%  (p=0.000 n=8+9)
RuneCountInStringTenJapaneseChars-8  49.3ns ± 2%  38.5ns ± 2%  -21.84%  (p=0.000 n=8+8)

Fixes #13162

Change-Id: Ifb01f3799c5c93e7f7c7af13a95becfde85ae807
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runtime: switch cputicks and switchToCrashStack0 on loong64 to regabi

goos: linux
goarch: loong64
pkg: runtime
cpu: Loongson-3A6000 @ 2500.00MHz
                     |   old.bench   |   new.bench                        |
                     |   sec/op      |   sec/op      vs base              |
SelectUncontended       246.6n ± 0%     247.4n ± 0%  +0.32% (p=0.000 n=10)
SelectSyncContended     1.458µ ± 0%     1.461µ ± 0%  +0.17% (p=0.000 n=10)
SelectAsyncContended    246.6n ± 0%     247.5n ± 0%  +0.36% (p=0.000 n=10)
SelectNonblock          32.81n ± 0%     32.81n ± 0%       ~ (p=1.000 n=10)
SelectProdCons          653.8n ± 0%     652.2n ± 0%  -0.24% (p=0.010 n=10)
GoroutineSelect         2.204m ± 0%     2.172m ± 0%  -1.46% (p=0.000 n=10)
GoroutineForRange       1.775m ± 0%     1.748m ± 0%  -1.54% (p=0.000 n=10)
geomean                 3.573µ          3.561µ       -0.34%

Change-Id: I6337cad72369e77e378b6e9bec6521d71b3f4fc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/610175
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os: add clone(CLONE_PIDFD) check to pidfd feature check

clone(CLONE_PIDFD) was added in Linux 5.2 and pidfd_open was added in
Linux 5.3. Thus our feature check for pidfd_open should be sufficient to
ensure that clone(CLONE_PIDFD) works.

Unfortuantely, some alternative Linux implementations may not follow
this strict ordering. For example, QEMU 7.2 (Dec 2022) added pidfd_open,
but clone(CLONE_PIDFD) was only added in QEMU 8.0 (Apr 2023).

Debian bookworm provides QEMU 7.2 by default.

Fixes #69259.

Change-Id: Ie3f3dc51f0cd76944871bf98690abf59f68fd7bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/592078
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cmd/compile,cmd/internal/obj/riscv: always provide ANDN, ORN and XNOR for riscv64

The ANDN, ORN and XNOR RISC-V Zbb extension instructions are easily
synthesised. Make them always available by adding support to the
riscv64 assembler so that we either emit two instruction sequences,
or a single instruction, when permitted by the GORISCV64 profile.
This means that these instructions can be used unconditionally,
simplifying compiler rewrite rules, codegen tests and manually
written assembly.

Around 180 instructions are removed from the Go binary on riscv64
when built with rva22u64.

Change-Id: Ib2d90f2593a306530dc0ed08a981acde4d01be20
Reviewed-on: https://go-review.googlesource.com/c/go/+/611895
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cmd/go: explicitly add default GODEBUG to linker config

Previously we expected the default GODEBUG that's embedded in the binary
to be taken into account for build actionIDs through the build info. The
build info contains the default GODEBUG for a package main, and then
that build info is used to generate the action id. But tests of packages
other than main do not have buildinfo set on them. So the default
GODEBUG isn't taken into account in the action id for those tests.
Explicitly include GODEBUG when generating all link actions' action ids
to make sure it's always present.

Fixes #69203

Change-Id: Ifbc58482454ecfb51ba09cfcff02972cac3270c1
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cmd/go: set environment LANG=C when getting compiler version

Compiler's version will not work well if gcc output have
different language. Like 'gcc -v', it may not output:
'gcc version xx.xx.x'

 Fixes #69221

Change-Id: I4adcea79dfaaf5853dfb6e718468f8530c67da6a
GitHub-Last-Rev: 069787c0836f9be10e4bf71dd6c468ae47f6161e
GitHub-Pull-Request: golang/go#69223
Reviewed-on: https://go-review.googlesource.com/c/go/+/610215
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Reviewed-by: DING HU <huzuzong123@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>

runtime/pprof: use slices.Contains

Change-Id: I013aae68f47d7a37deb44097f80a213d8c7976bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/612655
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

os: check for EACCES, not EPERM, in Getwd test

Fixes #69406

Change-Id: I1c6b1498d87f94cc9196a933c13df1c3369e19a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/610756
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Tim King <taking@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/compile/internal/typecheck: simplify checkmake/checkunsafesliceorstring

types2 handles all constant-related bounds checks in user Go code now,
so it's safe to remove the constants check from these functions.

Change-Id: I4e3fb5d22f9bbc95878c7df2ee3b0eb1819f8dd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/611677
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Tim King <taking@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>

cmd/compile/internal/typecheck: simplify tcSlice

types2 handles all constant-related bounds checks in user Go code now,
so it's safe to remove all constants checking in tcSlice function.

Change-Id: Ia0dd4928d7122a6f62df10436bb4a3675ebf3357
Reviewed-on: https://go-review.googlesource.com/c/go/+/611676
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Tim King <taking@google.com>

src/internal/bytealg: optimize the function Compare on loong64

The relevant performance improved by 66.73%.

benchmark:
goos: linux
goarch: loong64
pkg: bytes
cpu: Loongson-3A6000 @ 2500.00MHz
                                      │     old      │                 new                 │
                                      │    sec/op    │   sec/op     vs base                │
BytesCompare/1                           5.603n ± 0%   4.002n ± 0%  -28.57% (p=0.000 n=20)
BytesCompare/2                           6.405n ± 0%   4.002n ± 0%  -37.52% (p=0.000 n=20)
BytesCompare/4                           8.007n ± 0%   4.002n ± 0%  -50.02% (p=0.000 n=20)
BytesCompare/8                          11.210n ± 0%   4.002n ± 0%  -64.30% (p=0.000 n=20)
BytesCompare/16                          6.005n ± 0%   4.802n ± 0%  -20.03% (p=0.000 n=20)
BytesCompare/32                          6.806n ± 0%   4.402n ± 0%  -35.32% (p=0.000 n=20)
BytesCompare/64                          8.407n ± 0%   6.003n ± 0%  -28.60% (p=0.000 n=20)
BytesCompare/128                        11.610n ± 0%   8.404n ± 0%  -27.61% (p=0.000 n=20)
BytesCompare/256                         18.02n ± 0%   14.01n ± 0%  -22.25% (p=0.000 n=20)
BytesCompare/512                         31.23n ± 0%   26.98n ± 0%  -13.61% (p=0.000 n=20)
BytesCompare/1024                        56.85n ± 0%   52.43n ± 0%   -7.77% (p=0.000 n=20)
BytesCompare/2048                        108.1n ± 0%   103.8n ± 0%   -3.98% (p=0.000 n=20)
CompareBytesEqual                       15.610n ± 0%   5.203n ± 0%  -66.67% (p=0.000 n=20)
CompareBytesToNil                        3.203n ± 0%   3.202n ± 0%   -0.03% (p=0.000 n=20)
CompareBytesEmpty                        3.203n ± 0%   2.423n ± 0%  -24.35% (p=0.000 n=20)
CompareBytesIdentical                    3.203n ± 0%   2.424n ± 0%  -24.32% (p=0.000 n=20)
CompareBytesSameLength                   8.407n ± 0%   8.004n ± 0%   -4.79% (p=0.000 n=20)
CompareBytesDifferentLength              8.808n ± 0%   7.604n ± 0%  -13.67% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=1       839.85µ ± 0%   82.04µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=2       839.86µ ± 0%   82.03µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=3       839.86µ ± 0%   82.03µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=4       839.86µ ± 0%   82.03µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=5       839.85µ ± 0%   82.04µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=6       839.85µ ± 0%   82.03µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigUnaligned/offset=7       839.85µ ± 0%   82.03µ ± 0%  -90.23% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=0    78.77µ ± 0%   78.75µ ± 0%   -0.03% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=1   839.84µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=2   839.84µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=3   839.85µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=4   839.83µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=5   839.85µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=6   839.85µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBigBothUnaligned/offset=7   839.84µ ± 0%   85.31µ ± 0%  -89.84% (p=0.000 n=20)
CompareBytesBig                          78.77µ ± 0%   78.75µ ± 0%   -0.03% (p=0.001 n=20)
CompareBytesBigIdentical                 2.802n ± 0%   2.801n ± 0%   -0.04% (p=0.001 n=20)
geomean                                  1.524µ        507.2n       -66.73%

Change-Id: Ice9f4ef0ce0fbb5a6424823c5f8e0c0c369fd159
Reviewed-on: https://go-review.googlesource.com/c/go/+/589538
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Auto-Submit: Tim King <taking@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

runtime: optimize the function memmove on loong64

benchmarck on 3A6000:
goos: linux
goarch: loong64
pkg: runtime
cpu: Loongson-3A6000 @ 2500.00MHz
                                 │      old      │                 new                  │
                                 │    sec/op     │    sec/op     vs base                │
Memmove/0                           0.6003n ± 0%   0.6003n ± 0%        ~ (p=0.487 n=20)
Memmove/1                            4.402n ± 0%    2.815n ± 0%  -36.05% (p=0.000 n=20)
Memmove/2                            5.202n ± 0%    3.202n ± 0%  -38.45% (p=0.000 n=20)
Memmove/3                            6.003n ± 0%    2.820n ± 0%  -53.02% (p=0.000 n=20)
Memmove/4                            6.803n ± 0%    3.202n ± 0%  -52.93% (p=0.000 n=20)
Memmove/5                            7.604n ± 0%    3.202n ± 0%  -57.89% (p=0.000 n=20)
Memmove/6                            8.404n ± 0%    3.202n ± 0%  -61.90% (p=0.000 n=20)
Memmove/7                            9.204n ± 0%    3.202n ± 0%  -65.21% (p=0.000 n=20)
Memmove/8                            4.802n ± 0%    3.602n ± 0%  -24.99% (p=0.000 n=20)
Memmove/9                            6.003n ± 0%    3.202n ± 0%  -46.66% (p=0.000 n=20)
Memmove/10                           6.803n ± 0%    3.202n ± 0%  -52.93% (p=0.000 n=20)
Memmove/11                           7.604n ± 0%    3.202n ± 0%  -57.89% (p=0.000 n=20)
Memmove/12                           8.404n ± 0%    3.202n ± 0%  -61.90% (p=0.000 n=20)
Memmove/13                           9.204n ± 0%    3.202n ± 0%  -65.21% (p=0.000 n=20)
Memmove/14                          10.000n ± 0%    3.202n ± 0%  -67.98% (p=0.000 n=20)
Memmove/15                          10.810n ± 0%    3.202n ± 0%  -70.38% (p=0.000 n=20)
Memmove/16                           6.003n ± 0%    3.202n ± 0%  -46.66% (p=0.000 n=20)
Memmove/32                           7.604n ± 0%    3.602n ± 0%  -52.63% (p=0.000 n=20)
Memmove/64                          10.810n ± 0%    4.402n ± 0%  -59.28% (p=0.000 n=20)
Memmove/128                         17.210n ± 0%    8.004n ± 0%  -53.49% (p=0.000 n=20)
Memmove/256                          30.41n ± 0%    10.81n ± 0%  -64.45% (p=0.000 n=20)
Memmove/512                          56.03n ± 0%    17.81n ± 0%  -68.21% (p=0.000 n=20)
Memmove/1024                        107.30n ± 0%    30.62n ± 0%  -71.46% (p=0.000 n=20)
Memmove/2048                        209.70n ± 0%    56.23n ± 0%  -73.19% (p=0.000 n=20)
Memmove/4096                         414.6n ± 0%    107.5n ± 0%  -74.07% (p=0.000 n=20)
MemmoveOverlap/32                    8.404n ± 0%    4.402n ± 0%  -47.62% (p=0.000 n=20)
MemmoveOverlap/64                   11.610n ± 0%    5.003n ± 0%  -56.91% (p=0.000 n=20)
MemmoveOverlap/128                  18.010n ± 0%    9.005n ± 0%  -50.00% (p=0.000 n=20)
MemmoveOverlap/256                   31.22n ± 0%    12.41n ± 0%  -60.25% (p=0.000 n=20)
MemmoveOverlap/512                   56.83n ± 0%    19.08n ± 0%  -66.43% (p=0.000 n=20)
MemmoveOverlap/1024                 108.10n ± 0%    32.00n ± 0%  -70.40% (p=0.000 n=20)
MemmoveOverlap/2048                 210.50n ± 0%    57.94n ± 0%  -72.48% (p=0.000 n=20)
MemmoveOverlap/4096                  415.4n ± 0%    108.9n ± 0%  -73.78% (p=0.000 n=20)
MemmoveUnalignedDst/0                2.448n ± 0%    2.942n ± 0%  +20.16% (p=0.000 n=20)
MemmoveUnalignedDst/1                4.802n ± 0%    3.202n ± 0%  -33.32% (p=0.000 n=20)
MemmoveUnalignedDst/2                5.603n ± 0%    3.602n ± 0%  -35.71% (p=0.000 n=20)
MemmoveUnalignedDst/3                6.403n ± 0%    3.202n ± 0%  -49.99% (p=0.000 n=20)
MemmoveUnalignedDst/4                7.203n ± 0%    3.602n ± 0%  -49.99% (p=0.000 n=20)
MemmoveUnalignedDst/5                8.004n ± 0%    3.602n ± 0%  -55.00% (p=0.000 n=20)
MemmoveUnalignedDst/6                8.804n ± 0%    3.602n ± 0%  -59.09% (p=0.000 n=20)
MemmoveUnalignedDst/7                9.605n ± 0%    3.602n ± 0%  -62.50% (p=0.000 n=20)
MemmoveUnalignedDst/8               10.400n ± 0%    4.002n ± 0%  -61.52% (p=0.000 n=20)
MemmoveUnalignedDst/9               11.210n ± 0%    3.802n ± 0%  -66.08% (p=0.000 n=20)
MemmoveUnalignedDst/10              12.010n ± 0%    3.802n ± 0%  -68.34% (p=0.000 n=20)
MemmoveUnalignedDst/11              12.810n ± 0%    3.802n ± 0%  -70.32% (p=0.000 n=20)
MemmoveUnalignedDst/12              13.610n ± 0%    3.802n ± 0%  -72.06% (p=0.000 n=20)
MemmoveUnalignedDst/13              14.410n ± 0%    3.802n ± 0%  -73.62% (p=0.000 n=20)
MemmoveUnalignedDst/14              15.210n ± 0%    3.802n ± 0%  -75.00% (p=0.000 n=20)
MemmoveUnalignedDst/15              16.010n ± 0%    3.802n ± 0%  -76.25% (p=0.000 n=20)
MemmoveUnalignedDst/16              17.210n ± 0%    3.802n ± 0%  -77.91% (p=0.000 n=20)
MemmoveUnalignedDst/32              30.020n ± 0%    4.202n ± 0%  -86.00% (p=0.000 n=20)
MemmoveUnalignedDst/64              56.030n ± 0%    6.804n ± 0%  -87.86% (p=0.000 n=20)
MemmoveUnalignedDst/128             106.90n ± 0%    13.61n ± 0%  -87.27% (p=0.000 n=20)
MemmoveUnalignedDst/256             209.50n ± 0%    17.07n ± 1%  -91.85% (p=0.000 n=20)
MemmoveUnalignedDst/512             414.60n ± 0%    24.95n ± 0%  -93.98% (p=0.000 n=20)
MemmoveUnalignedDst/1024            828.40n ± 0%    42.82n ± 0%  -94.83% (p=0.000 n=20)
MemmoveUnalignedDst/2048           1648.00n ± 0%    78.04n ± 0%  -95.26% (p=0.000 n=20)
MemmoveUnalignedDst/4096            3287.0n ± 0%    148.4n ± 0%  -95.49% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/32       30.810n ± 0%    5.603n ± 0%  -81.81% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/64       56.430n ± 0%    7.604n ± 0%  -86.52% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/128     107.700n ± 0%    9.812n ± 0%  -90.89% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/256      210.10n ± 0%    13.50n ± 0%  -93.57% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/512      415.00n ± 0%    21.21n ± 0%  -94.89% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/1024     828.80n ± 0%    41.02n ± 0%  -95.05% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/2048    1648.00n ± 0%    80.23n ± 0%  -95.13% (p=0.000 n=20)
MemmoveUnalignedDstOverlap/4096     3288.0n ± 0%    162.4n ± 0%  -95.06% (p=0.000 n=20)
MemmoveUnalignedSrc/0                2.468n ± 1%    2.913n ± 0%  +18.01% (p=0.000 n=20)
MemmoveUnalignedSrc/1                4.802n ± 0%    3.202n ± 0%  -33.32% (p=0.000 n=20)
MemmoveUnalignedSrc/2                5.603n ± 0%    3.603n ± 0%  -35.70% (p=0.000 n=20)
MemmoveUnalignedSrc/3                6.403n ± 0%    3.207n ± 0%  -49.91% (p=0.000 n=20)
MemmoveUnalignedSrc/4                7.203n ± 0%    3.603n ± 0%  -49.98% (p=0.000 n=20)
MemmoveUnalignedSrc/5                8.004n ± 0%    3.602n ± 0%  -55.00% (p=0.000 n=20)
MemmoveUnalignedSrc/6                8.804n ± 0%    3.602n ± 0%  -59.09% (p=0.000 n=20)
MemmoveUnalignedSrc/7                9.605n ± 0%    3.602n ± 0%  -62.50% (p=0.000 n=20)
MemmoveUnalignedSrc/8               10.410n ± 0%    4.002n ± 0%  -61.56% (p=0.000 n=20)
MemmoveUnalignedSrc/9               11.210n ± 0%    3.802n ± 0%  -66.08% (p=0.000 n=20)
MemmoveUnalignedSrc/10              12.010n ± 0%    3.802n ± 0%  -68.34% (p=0.000 n=20)
MemmoveUnalignedSrc/11              12.810n ± 0%    3.802n ± 0%  -70.32% (p=0.000 n=20)
MemmoveUnalignedSrc/12              13.610n ± 0%    3.802n ± 0%  -72.06% (p=0.000 n=20)
MemmoveUnalignedSrc/13              14.410n ± 0%    3.802n ± 0%  -73.62% (p=0.000 n=20)
MemmoveUnalignedSrc/14              15.210n ± 0%    3.802n ± 0%  -75.00% (p=0.000 n=20)
MemmoveUnalignedSrc/15              16.010n ± 0%    3.802n ± 0%  -76.25% (p=0.000 n=20)
MemmoveUnalignedSrc/16              16.810n ± 0%    3.802n ± 0%  -77.38% (p=0.000 n=20)
MemmoveUnalignedSrc/32              30.410n ± 0%    4.301n ± 0%  -85.86% (p=0.000 n=20)
MemmoveUnalignedSrc/64              55.630n ± 0%    5.203n ± 0%  -90.65% (p=0.000 n=20)
MemmoveUnalignedSrc/128            107.300n ± 0%    8.805n ± 0%  -91.79% (p=0.000 n=20)
MemmoveUnalignedSrc/256             209.50n ± 0%    12.41n ± 6%  -94.08% (p=0.000 n=20)
MemmoveUnalignedSrc/512             414.20n ± 0%    20.41n ± 0%  -95.07% (p=0.000 n=20)
MemmoveUnalignedSrc/1024            828.00n ± 0%    36.92n ± 0%  -95.54% (p=0.000 n=20)
MemmoveUnalignedSrc/2048           1648.00n ± 0%    71.41n ± 0%  -95.67% (p=0.000 n=20)
MemmoveUnalignedSrc/4096            3287.0n ± 0%    132.2n ± 0%  -95.98% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_16_0        7.203n ± 0%    5.002n ± 0%  -30.56% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_16_0        7.604n ± 0%    5.002n ± 0%  -34.22% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_16_1       13.210n ± 0%    5.002n ± 0%  -62.13% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_16_1       13.210n ± 0%    5.002n ± 0%  -62.13% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_16_4       13.210n ± 0%    5.002n ± 0%  -62.13% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_16_4       13.610n ± 0%    5.002n ± 0%  -63.24% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_16_7       12.810n ± 0%    5.002n ± 0%  -60.95% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_16_7       13.610n ± 0%    5.002n ± 0%  -63.24% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_64_0       12.010n ± 0%    7.191n ± 0%  -40.12% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_64_0       12.410n ± 0%    7.194n ± 0%  -42.03% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_64_1       18.410n ± 0%    7.604n ± 0%  -58.70% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_64_1       18.410n ± 0%    7.604n ± 0%  -58.70% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_64_4       18.410n ± 0%    7.604n ± 0%  -58.70% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_64_4       18.810n ± 0%    7.604n ± 0%  -59.57% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_64_7       18.010n ± 0%    7.604n ± 0%  -57.78% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_64_7       18.810n ± 0%    7.604n ± 0%  -59.57% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_256_0       31.62n ± 0%    14.19n ± 0%  -55.12% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_256_0       32.02n ± 0%    13.61n ± 0%  -57.50% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_256_1       38.02n ± 0%    18.20n ± 0%  -52.13% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_256_1       38.02n ± 0%    18.41n ± 0%  -51.58% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_256_4       38.02n ± 0%    17.21n ± 0%  -54.73% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_256_4       38.42n ± 0%    16.81n ± 0%  -56.25% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_256_7       37.62n ± 0%    15.61n ± 0%  -58.51% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_256_7       38.42n ± 0%    15.01n ± 0%  -60.93% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_4096_0      415.8n ± 0%    111.1n ± 0%  -73.28% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_4096_0      416.2n ± 0%    110.5n ± 0%  -73.45% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_4096_1      422.2n ± 0%    114.3n ± 0%  -72.93% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_4096_1      422.2n ± 0%    114.7n ± 0%  -72.83% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_4096_4      422.2n ± 0%    113.3n ± 0%  -73.16% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_4096_4      422.6n ± 0%    113.1n ± 0%  -73.24% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_4096_7      421.8n ± 0%    111.7n ± 0%  -73.52% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_4096_7      422.6n ± 0%    111.7n ± 0%  -73.57% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_65536_0     6.568µ ± 0%    4.869µ ± 0%  -25.88% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_65536_0     6.568µ ± 0%    5.009µ ± 0%  -23.74% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_65536_1     6.574µ ± 0%    4.743µ ± 0%  -27.85% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_65536_1     6.574µ ± 0%    4.770µ ± 0%  -27.44% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_65536_4     6.574µ ± 0%    4.758µ ± 0%  -27.63% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_65536_4     6.574µ ± 0%    4.768µ ± 0%  -27.48% (p=0.000 n=20)
MemmoveUnalignedSrcDst/f_65536_7     6.574µ ± 0%    4.757µ ± 0%  -27.64% (p=0.000 n=20)
MemmoveUnalignedSrcDst/b_65536_7     6.574µ ± 0%    4.583µ ± 0%  -30.29% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/32       30.410n ± 0%    6.804n ± 0%  -77.63% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/64        56.03n ± 0%    10.01n ± 0%  -82.13% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/128      107.30n ± 0%    14.01n ± 0%  -86.94% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/256      209.70n ± 0%    13.43n ± 1%  -93.60% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/512      414.60n ± 0%    22.23n ± 0%  -94.64% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/1024     828.40n ± 0%    37.62n ± 0%  -95.46% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/2048    1648.00n ± 0%    68.04n ± 0%  -95.87% (p=0.000 n=20)
MemmoveUnalignedSrcOverlap/4096     3287.0n ± 0%    128.9n ± 0%  -96.08% (p=0.000 n=20)
geomean                              48.94n         13.58n       -72.26%

The relevant performance improved by 72.26%.

Change-Id: If2d3e09c3d687e733e6ff2c50feb8d6a8eb7e63b
Reviewed-on: https://go-review.googlesource.com/c/go/+/589537
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
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cmd/compile: correct wasmexport result type checking

The function resultsToWasmFields was originally for only
wasmimport. I adopted it for wasmexport as well, but forgot to
update a few places that were wasmimport-specific. This leads to
compiler panic if an invalid result type is passed, and also
unsafe.Pointer not actually supported. This CL fixes it.

Updates #65199.

Change-Id: I9bbd7154b70422504994840ff541c39ee596ee8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/611315
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Achille Roussel <achille.roussel@gmail.com>
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crypto/subtle: implement xorBytes in hardware on loong64

goos: linux
goarch: loong64
pkg: crypto/subtle
cpu: Loongson-3A6000 @ 2500.00MHz
                    │  bench.old   │              bench.new              │
                    │    sec/op    │   sec/op     vs base                │
XORBytes/8Bytes       11.250n ± 0%   6.403n ± 0%  -43.08% (p=0.000 n=20)
XORBytes/128Bytes      24.61n ± 0%   12.21n ± 0%  -50.39% (p=0.000 n=20)
XORBytes/2048Bytes     216.7n ± 0%   108.3n ± 0%  -50.02% (p=0.000 n=20)
XORBytes/32768Bytes    3.657µ ± 0%   1.683µ ± 0%  -53.98% (p=0.000 n=20)
geomean                121.7n        61.44n       -49.52%

                    │  bench.old   │               bench.new                │
                    │     B/s      │      B/s       vs base                 │
XORBytes/8Bytes       678.1Mi ± 0%   1191.5Mi ± 0%   +75.72% (p=0.000 n=20)
XORBytes/128Bytes     4.844Gi ± 0%    9.766Gi ± 0%  +101.63% (p=0.000 n=20)
XORBytes/2048Bytes    8.801Gi ± 0%   17.619Gi ± 0%  +100.18% (p=0.000 n=20)
XORBytes/32768Bytes   8.346Gi ± 0%   18.137Gi ± 0%  +117.32% (p=0.000 n=20)
geomean               3.918Gi         7.763Gi        +98.14%

goos: linux
goarch: loong64
pkg: crypto/subtle
cpu: Loongson-3A5000 @ 2500.00MHz
                    │  bench.old   │              bench.new              │
                    │    sec/op    │   sec/op     vs base                │
XORBytes/8Bytes       16.420n ± 0%   8.806n ± 0%  -46.37% (p=0.000 n=20)
XORBytes/128Bytes      35.84n ± 0%   16.42n ± 0%  -54.19% (p=0.000 n=20)
XORBytes/2048Bytes     332.0n ± 0%   160.5n ± 0%  -51.64% (p=0.000 n=20)
XORBytes/32768Bytes    4.944µ ± 0%   2.474µ ± 0%  -49.96% (p=0.000 n=20)
geomean                176.3n        87.05n       -50.62%

                    │  bench.old   │               bench.new                │
                    │     B/s      │      B/s       vs base                 │
XORBytes/8Bytes       464.7Mi ± 0%    866.4Mi ± 0%   +86.45% (p=0.000 n=20)
XORBytes/128Bytes     3.326Gi ± 0%    7.261Gi ± 0%  +118.31% (p=0.000 n=20)
XORBytes/2048Bytes    5.745Gi ± 0%   11.880Gi ± 0%  +106.80% (p=0.000 n=20)
XORBytes/32768Bytes   6.172Gi ± 0%   12.334Gi ± 0%   +99.83% (p=0.000 n=20)
geomean               2.705Gi         5.477Gi       +102.52%

Change-Id: Id404f9023a57025f78b6922659cfa8870881d646
Reviewed-on: https://go-review.googlesource.com/c/go/+/590175
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Roland Shoemaker <roland@golang.org>
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html/template: use maps.Copy in escaper.escapeListConditionally

To make it a little simpler.

Change-Id: I0d7f015e8f245fbdd8c5cf5c10e8d2bd44b91021
GitHub-Last-Rev: 2eae47fe8bc5704de86a91ac87c76e49f51d2fe7
GitHub-Pull-Request: golang/go#69396
Reviewed-on: https://go-review.googlesource.com/c/go/+/612397
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Reviewed-by: Ian Lance Taylor <iant@google.com>

cmd/compile/internal/typecheck: simplify IndexConst

types2 handles all constant-related bounds checks in user Go code now,
so it's safe to remove the check in IndexConst function.

Change-Id: I9116493f191c4df1cce7e43c8ac3dc5bf020fd5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/611675
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Tim King <taking@google.com>
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runtime: Goexit on C-created thread report more useful error message

This reverts CL 609296, with the fix for failing builders.

Fixes #68275

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-nocgo,gotip-darwin-amd64-nocgo,gotip-linux-ppc64_power10,gotip-linux-ppc64_power8
Change-Id: I0f539ee7b0be720642eee8885946edccd9c6e04e
Reviewed-on: https://go-review.googlesource.com/c/go/+/612335
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Reviewed-by: qiu laidongfeng2 <2645477756@qq.com>

runtime: add asm_riscv64.h

asm_riscv64.h will be used to define macros for each riscv64
extension that is not part of the rva20u64 base profile but that the
_riscv64.s assembly files are allowed to use because the user has
specified a more capable profile in the GORISCV64 variable. This will
allow us, for example, to test for the hasZba macro in those assembly
files instead of the GORISCV64_rva22u64 macro before using a Zba
instruction.  This is important as it means that in the future when
we add support for new profiles that support Zba, e.g., rva23u64,
we only need to update asm_riscv64.h to indicate rva23u64 supports
Zba.  We will not need to update every assembly language file that
already uses Zba instructions.

Updates #61476

Change-Id: I83abfeb20d08a87ac8ea88f4d8a93437f0631353
Reviewed-on: https://go-review.googlesource.com/c/go/+/608255
Auto-Submit: Tim King <taking@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Meng Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
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cmd/compile: remove types.Type rparams field

This field is present during the initial development of generic support
inside compiler, and indicating whether a type is fully instantiated is
the solely purpose at this moment. Further, its name is also confused,
and there have been a TODO to chose a better name for it.

Instead, just using a bit to track whether a type is fully instantiated,
then this rparams field can be removed to simplify the code.

Change-Id: Ia29c6dd5792487c440b83b0f3b77bd60917c2019
Reviewed-on: https://go-review.googlesource.com/c/go/+/611255
Reviewed-by: Tim King <taking@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>

cmd/compile, go/types: add missing space in error message

Otherwise "print(nil)" gets an error like
    use of untyped nil in argument to built-inprint

Change-Id: Iaa841df106f90787031dce75a49af69860a9dbc9
Reviewed-on: https://go-review.googlesource.com/c/go/+/611918
Commit-Queue: Ian Lance Taylor <iant@google.com>
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Auto-Submit: Ian Lance Taylor <iant@golang.org>

cmd/cgo: use slices.ContainsFunc

Now that Go 1.22.6 is the minimum bootstrap toolchain (cf. CL 606156),
the slices package (introduced in Go 1.21) can be used in packages built
using the bootstrap toolchain.

For #64751

Change-Id: Ib36f39016f57c5e110f78a85ca9c806d91356024
Reviewed-on: https://go-review.googlesource.com/c/go/+/612316
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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