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Commit Graph

61493 Commits

Author SHA1 Message Date
wineandchord
3204c91d3b add test case 2024-11-15 18:32:33 +08:00
wineandchord
35c8f700a7 use single reflect 2024-11-15 18:06:46 +08:00
wineandchord
3a8a7cac38 os/signal: check int type of signal using reflection to fix windows notification 2024-11-15 17:34:27 +08:00
Paul E. Murphy
f99f5da18f cmd/internal/obj/fips: mark R_ADDRPOWR_GOT as a pcrel relocation
It's actually a TOC relative relocation, but those are also accepted
as pcrel relocations here too. This fixes compilation on GOPPC64 <= power9.

Change-Id: I235125a76f59ab26c6c753540cfaeb398f9c105d
Reviewed-on: https://go-review.googlesource.com/c/go/+/628157
Auto-Submit: Paul Murphy <murp@ibm.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-11-14 22:29:26 +00:00
Carlana Johnson
3d61de41a2 log/slog: add DiscardHandler
This adds a package-level variable, slog.DiscardHandler, which is a
slog.Handler which performs no output. This serves a similar purpose
to io.Discard.

Fixes #62005

Change-Id: Ia8babc55f860dec9b663a5c400090a7669608fd5
GitHub-Last-Rev: 0a611174ee
GitHub-Pull-Request: golang/go#70296
Reviewed-on: https://go-review.googlesource.com/c/go/+/626486
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-14 22:27:09 +00:00
Tim King
cd35323be9 internal/exportdata: introduce shared library for exportdata
Deduplicates FindPkg and FindExportData which were shared by
go/internal/gcimporter and cmd/compile/internal/importer into
a new package internal/exportdata.

This change only moves code.

Change-Id: I1daf24dd79fafbe9014b2b15671dcde46b54711e
Reviewed-on: https://go-review.googlesource.com/c/go/+/626700
Commit-Queue: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-11-14 22:20:26 +00:00
Rhys Hiltner
9fe70bcd65 runtime: add test for mutex starvation
When multiple threads all need to acquire the same runtime.mutex, make
sure that none of them has to wait for too long. Measure how long a
single thread can capture the mutex, and how long individual other
threads must go between having a turn with the mutex.

For #68578

Change-Id: I56ecc551232f9c2730c128a9f8eeb7bd45c2d3b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/622995
Auto-Submit: Rhys Hiltner <rhys.hiltner@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-11-14 22:05:16 +00:00
Tim King
c79a486be2 cmd/compile/internal/importer: minimize Import differences
Minimizes the differences with go/internal/gcimporter.Import.

Note that the copy in cmd/compile/internal/importer is currently
only used in tests.

The delta between the two Import functions is now just types vs types2.

Change-Id: I5e94d3aa5bbdb78252e47310c95807f63e27ef3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/626698
Commit-Queue: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-11-14 21:58:26 +00:00
Robert Griesemer
c9ac589853 cmd/compile/internal/types2: enable disabled part of an example test (cleanup)
Change-Id: I8ffb198d64ec1b89e6d13bfa299bf699f1ca3830
Reviewed-on: https://go-review.googlesource.com/c/go/+/628156
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-11-14 21:07:44 +00:00
Tim King
4003ee79d0 go/internal/gcimporter,cmd/compile/internal/importer: reuse archive.ReadHeader
Reuse (or copy) cmd/internal/archive.ReadHeader in importers.

Change-Id: I3caa19b1b366c2bbffcdeb0ef4db337ee457b47e
Reviewed-on: https://go-review.googlesource.com/c/go/+/626776
Commit-Queue: Tim King <taking@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
2024-11-14 21:03:19 +00:00
Jorropo
672a53def7 strconv: cleanup old compiler bits.TrailingZeros workaround
Since CL 599096 the compiler knows bits.TrailingZeros's maximum value
based on the input type size.

Since CL 603996 it knows it based on input's maximum value.

Change-Id: Ib0d6b15a3ba6894d3e7e12b79b387ddbffabe370
Reviewed-on: https://go-review.googlesource.com/c/go/+/618715
Auto-Submit: Robert Griesemer <gri@google.com>
Commit-Queue: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2024-11-14 18:20:19 +00:00
Richard Miller
a763084ed2 make.rc: correct test for undefined GOROOT_BOOTSTRAP
The test "if(! ~ $#GOROOT_BOOTSTRAP 1)", to check for the environment
variable GOROOT_BOOTSTRAP being undefined, will not succeed if the
variable is set to the empty string (as the coordinator was doing).
A better test is "if(~ $"GOROOT_BOOTSTRAP '')", which succeeds if
the variable is undefined, or set to an empty list or an empty string.

For #69038

Change-Id: Ic6e6944e0c76461daea206ba9575b863f92f6228
Reviewed-on: https://go-review.googlesource.com/c/go/+/627944
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David du Colombier <0intro@gmail.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-11-14 18:02:59 +00:00
qiulaidongfeng
cce90c1eeb cmd/go: print not-defaults arch-env
Fixes #67492
For #34208

Change-Id: Idcddf88aad8e18b0274ce8e2ff8a83d57db603a6
GitHub-Last-Rev: 8ef7cf59d0
GitHub-Pull-Request: golang/go#67493
Reviewed-on: https://go-review.googlesource.com/c/go/+/586241
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
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2024-11-14 17:25:22 +00:00
qmuntal
3f0b293e70 runtime/cgo: report a meaningful error message when using Cygwin
Go has never supported Cygwin as a C compiler, but users get the
following cryptic error message when they try to use it:

    implicit declaration of function '_beginthread'

This is because Cygwin doesn't implement _beginthread. Note that
this is not the only problem with Cygwin, but it's the one that
users are most likely to run into first.

This CL improves the error message to make it clear that Cygwin
is not supported, and suggests using MinGW instead.

Fixes #59490
Fixes #36691

Change-Id: Ifeec7a2cb38d7c5f50d6362c95504f72818c6a76
Reviewed-on: https://go-review.googlesource.com/c/go/+/627935
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2024-11-14 17:24:38 +00:00
lugen4ro
8e714281e4 embed: remove incorrect slash in comment
Change-Id: Ida74e8127c29d3e6f0a4322f86c7963fa2ef8244
GitHub-Last-Rev: ae479155d6
GitHub-Pull-Request: golang/go#70330
Reviewed-on: https://go-review.googlesource.com/c/go/+/627815
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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2024-11-14 16:08:01 +00:00
Flavio Castelli
8b0ac33da8 syscall: define EBADFD for wasip1 target
Fixes #60998

Change-Id: I7e899708c7e0406bd9927eb411b57fc3240b7f18
GitHub-Last-Rev: c1a20aee0e
GitHub-Pull-Request: golang/go#60999
Reviewed-on: https://go-review.googlesource.com/c/go/+/506175
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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2024-11-14 16:05:15 +00:00
Jes Cok
eb1e505f3f runtime: make Frames example produce documented output
I believe now this code can work in both test and standalone situations.

Fixes #70057

Change-Id: Ieb5163e6b917fd03d050f65589df6c31ad2515fe
GitHub-Last-Rev: db4863c05e
GitHub-Pull-Request: golang/go#70270
Reviewed-on: https://go-review.googlesource.com/c/go/+/625904
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Bypass: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-11-14 15:25:17 +00:00
Austin Clements
d31d77a263 cmd/go: remove confusing TrimPrefix(str, "\n")
It's not clear why strings here would have a *prefix* \n. This trim
was introduced back in March 2012 without explanation in omnibus
commit b03a5f66e8 (as a HasPrefix, since
we didn't have TrimPrefix at the time).

Change-Id: Ib0a7af36900e437fdc52ec5c1c921f92833f6cef
Reviewed-on: https://go-review.googlesource.com/c/go/+/558638
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Austin Clements <austin@google.com>
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2024-11-14 15:22:44 +00:00
Russ Cox
673a539170 cmd/go: code cleanups and go env output sorting
Sort the table of variables in the envcmd source code,
because all tables in all source code should be sorted
unless there's a reason they can't be.

Sort the go env output as well.

Sort the flag registrations, same reason.

Remove redundant range variable.

Change-Id: I5f1af3e22a09621706eb57c369bd2675b754b063
Reviewed-on: https://go-review.googlesource.com/c/go/+/627476
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
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2024-11-14 06:16:01 +00:00
Russ Cox
6c841e4640 all: enable FIPS verification code
Previous CLs committed changes to cmd/compile, cmd/link,
and crypto/internal/fips/check behind boolean flags.
Turn those flags on, to enable the CLs.

This is a separate, trivial CL for easier rollback.

For #69536.

Change-Id: I68206bae0b7d7ad5c8758267d1a2e68853b63644
Reviewed-on: https://go-review.googlesource.com/c/go/+/626000
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2024-11-14 05:50:37 +00:00
Robert Griesemer
2eac154b1c cmd/compile: better error message when offending/missing token is a keyword
Prefix keywords (type, default, case, etc.) with "keyword" in error
messages to make them less ambiguous.

Fixes #68589.

Change-Id: I1eb92d1382f621b934167b3a4c335045da26be9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/623819
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Tim King <taking@google.com>
2024-11-14 02:14:13 +00:00
Cherry Mui
3730814f2f crypto/internal/bigmod: optimize addMulVVW on Wasm
The current implementation of addMulVVW makes heavy use of
64x64->128 bit multiplications and 64-bit add-with-carry, which
are compiler intrinsics and are very efficient on many
architectures. However, those are not supported on Wasm. Here we
implement it with 32x32->64 bit operations, which is more
efficient on Wasm.

crypto/rsa benchmarks with Node:

                     │   old.txt   │              new.txt                │
                     │   sec/op    │   sec/op     vs base                │
DecryptPKCS1v15/2048   7.726m ± 1%   4.895m ± 2%  -36.65% (p=0.000 n=35)
DecryptPKCS1v15/3072   23.52m ± 1%   15.33m ± 1%  -34.83% (p=0.000 n=35)
DecryptPKCS1v15/4096   52.64m ± 2%   35.40m ± 1%  -32.75% (p=0.000 n=35)
EncryptPKCS1v15/2048   264.2µ ± 1%   176.9µ ± 1%  -33.02% (p=0.000 n=35)
DecryptOAEP/2048       7.608m ± 1%   4.911m ± 1%  -35.45% (p=0.000 n=35)
EncryptOAEP/2048       266.2µ ± 0%   183.3µ ± 2%  -31.15% (p=0.000 n=35)
SignPKCS1v15/2048      7.836m ± 1%   5.009m ± 2%  -36.08% (p=0.000 n=35)
VerifyPKCS1v15/2048    262.9µ ± 1%   176.3µ ± 1%  -32.94% (p=0.000 n=35)
SignPSS/2048           7.814m ± 0%   5.020m ± 1%  -35.76% (p=0.000 n=35)
VerifyPSS/2048         267.0µ ± 1%   183.8µ ± 1%  -31.17% (p=0.000 n=35)
geomean                2.718m        1.794m       -34.01%

With wazero:

                     │    old.txt   │              new.txt                │
                     │    sec/op    │   sec/op     vs base                │
DecryptPKCS1v15/2048   13.445m ± 0%   6.528m ± 0%  -51.45% (p=0.000 n=25)
DecryptPKCS1v15/3072    41.07m ± 0%   18.85m ± 0%  -54.10% (p=0.000 n=25)
DecryptPKCS1v15/4096    91.84m ± 1%   39.66m ± 0%  -56.81% (p=0.000 n=25)
EncryptPKCS1v15/2048    461.3µ ± 0%   197.2µ ± 0%  -57.25% (p=0.000 n=25)
DecryptOAEP/2048       13.438m ± 0%   6.577m ± 0%  -51.06% (p=0.000 n=25)
EncryptOAEP/2048        471.5µ ± 0%   207.7µ ± 0%  -55.95% (p=0.000 n=25)
SignPKCS1v15/2048      13.739m ± 0%   6.687m ± 0%  -51.33% (p=0.000 n=25)
VerifyPKCS1v15/2048     461.3µ ± 1%   196.8µ ± 0%  -57.35% (p=0.000 n=25)
SignPSS/2048           13.765m ± 0%   6.686m ± 0%  -51.43% (p=0.000 n=25)
VerifyPSS/2048          470.8µ ± 0%   208.9µ ± 1%  -55.64% (p=0.000 n=25)
geomean                 4.769m        2.179m       -54.31%

Change-Id: I97f37d8cf1e3e9756a4e03ab4e681bf04152925f
Reviewed-on: https://go-review.googlesource.com/c/go/+/626957
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-13 20:44:08 +00:00
Cherry Mui
4ffa2aecc1 cmd/internal/obj/wasm: correct return PC for frameless wasmexport wrappers
For a wasmexport wrapper, we generate a call to the actual
exported Go function, and use the wrapper function's PC 1 as the
(fake) return address. This address is not used for returning,
which is handled by the Wasm call stack. It is used for stack
unwinding, and PC 1 makes it past the prologue and therefore has
the right SP delta. But if the function has no arguments and
results, the wrapper is frameless, with no prologue, and PC 1
doesn't exist. This causes the unwinder to fail. In this case, we
put PC 0, which also has the correct SP delta (0).

Fixes #69584.

Change-Id: Ic047a6e62100db540b5099cc5a56a1d0f16d58b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/624000
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-13 20:09:36 +00:00
Russ Cox
26e1010372 cmd/dist: add more pie tests, fips tests
Check the various pie combinations with the new FIPS code.

For #69536.

Change-Id: I8fc771eab465c4af46a0ec8154d550c1bf95f7d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/625999
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-11-13 19:57:45 +00:00
Robert Griesemer
66b6b174b6 go/types, types2: avoid errors due to missing methods for invalid types
Don't report a (follow-on) error if a method is not found in a type
due to a prior error that made the type invalid, or which caused an
embedded field of a struct to have an invalid type (and thus one
cannot with certainty claim that a method is missing).

Fixes #53535.

Change-Id: Ib2879c6b3b9d927c93bbbf1d355397dd19f336f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/626997
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-11-13 19:41:32 +00:00
Brad Fitzpatrick
83a7626687 cmd/go: enable GOCACHEPROG by default, without GOEXPERIMENT
Fixes #64876

Change-Id: I2c0e1ed22f8e13d00dfb5fededbc84038cd7ff8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/626035
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Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
2024-11-13 19:09:01 +00:00
Sean Liao
4310502385 testing/slogtest: reuse results obtained from previous call
Fixes #67605

Change-Id: Ib48ddfabb93887c88bfca347ba2e5f3c4b4e90b3
Reviewed-on: https://go-review.googlesource.com/c/go/+/599836
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Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2024-11-13 19:03:44 +00:00
Sean Liao
d7ea9ff50b runtime/pprof: note different between go test -memprofile and WriteHeapProfile
Fixes #65328

Change-Id: I11242be93a95e117a6758ac037e143c3b38aa71c
Reviewed-on: https://go-review.googlesource.com/c/go/+/597980
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Reviewed-by: Carlos Amedee <carlos@golang.org>
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2024-11-13 19:02:55 +00:00
Michael Anthony Knyszek
80d306da50 runtime: prevent weak->strong conversions during mark termination
Currently it's possible for weak->strong conversions to create more GC
work during mark termination. When a weak->strong conversion happens
during the mark phase, we need to mark the newly-strong pointer, since
it may now be the only pointer to that object. In other words, the
object could be white.

But queueing new white objects creates GC work, and if this happens
during mark termination, we could end up violating mark termination
invariants. In the parlance of the mark termination algorithm, the
weak->strong conversion is a non-monotonic source of GC work, unlike the
write barriers (which will eventually only see black objects).

This change fixes the problem by forcing weak->strong conversions to
block during mark termination. We can do this efficiently by setting a
global flag before the ragged barrier that is checked at each
weak->strong conversion. If the flag is set, then the conversions block.
The ragged barrier ensures that all Ps have observed the flag and that
any weak->strong conversions which completed before the ragged barrier
have their newly-minted strong pointers visible in GC work queues if
necessary. We later unset the flag and wake all the blocked goroutines
during the mark termination STW.

There are a few subtleties that we need to account for. For one, it's
possible that a goroutine which blocked in a weak->strong conversion
wakes up only to find it's mark termination time again, so we need to
recheck the global flag on wake. We should also stay non-preemptible
while performing the check, so that if the check *does* appear as true,
it cannot switch back to false while we're actively trying to block. If
it switches to false while we try to block, then we'll be stuck in the
queue until the following GC.

All-in-all, this CL is more complicated than I would have liked, but
it's the only idea so far that is clearly correct to me at a high level.

This change adds a test which is somewhat invasive as it manipulates
mark termination, but hopefully that infrastructure will be useful for
debugging, fixing, and regression testing mark termination whenever we
do fix it.

Fixes #69803.

Change-Id: Ie314e6fd357c9e2a07a9be21f217f75f7aba8c4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/623615
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2024-11-13 18:52:12 +00:00
Constantin Konstantinidis
f1add18530 testing: replace CRLF by LF on windows before comparing to the expected output
Fixes #51269

Change-Id: I06747db18ca078c1f1bda9b7bc60006f53191f4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/627035
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Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-11-13 18:37:25 +00:00
David Chase
d311cc95dc cmd/compile: change status of "bad iterator" panic
Execution of the loop body previously either terminated
the iteration (returned false because of a break, goto, or
return) or actually panicked.  The check against abi.RF_READY
ensures that the body can no longer run and also panics.

This CL in addition transitions the loop state to abi.RF_PANIC
so that if this already badly-behaved iterator defer-recovers
this panic, then the exit check at the loop context will
catch the problem and panic there.

Previously, panics triggered by attempted execution of a
no-longer active loop would not trigger a panic at the loop
context if they were defer-recovered.

Change-Id: Ieeed2fafd0d65edb66098dc27dc9ae8c1e6bcc8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/625455
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tim King <taking@google.com>
2024-11-13 18:30:21 +00:00
Michael Pratt
7c40544441 internal/runtime/maps: use match to skip non-full slots in iteration
Iteration over swissmaps with low load (think map with large hint but
only one entry) is signicantly regressed vs old maps. See noswiss vs
swiss-tip below (+60%).

Currently we visit every single slot and individually check if the slot
is full or not.

We can do much better by using the control word to find all full slots
in a group in a single operation. This lets us skip completely empty
groups for instance.

Always using the control match approach is great for maps with low load,
but is a regression for mostly full maps. Mostly full maps have the
majority of slots full, so most calls to mapiternext will return the
next slot. In that case, doing the full group match on every call is
more expensive than checking the individual slot.

Thus we take a hybrid approach: on each call, we first check an
individual slot. If that slot is full, we're done. If that slot is
non-full, then we fall back to doing full group matches.

This trade-off works well. Both mostly empty and mostly full maps
perform nearly as well as doing all matching and all individual,
respectively.

The fast path is placed above the slow path loop rather than combined
(with some sort of `useMatch` variable) into a single loop to help the
compiler's code generation. The compiler really struggles with code
generation on a combined loop for some reason, yielding ~15% additional
instructions/op.

Comparison with old maps prior to this CL:

                                                 │    noswiss    │              swiss-tip               │
                                                 │    sec/op     │    sec/op      vs base               │
MapIter/Key=int64/Elem=int64/len=6-12               11.53n ±  2%    10.64n ±  2%   -7.72% (p=0.002 n=6)
MapIter/Key=int64/Elem=int64/len=64-12             10.180n ±  2%    9.670n ±  5%   -5.01% (p=0.004 n=6)
MapIter/Key=int64/Elem=int64/len=65536-12           10.78n ±  1%    10.15n ±  2%   -5.84% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=6-12        6.116n ±  2%    6.840n ±  2%  +11.84% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=64-12       2.403n ±  2%    3.892n ±  0%  +61.95% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=65536-12    1.940n ±  3%    3.237n ±  1%  +66.81% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=6-12                66.20n ±  2%    60.14n ±  3%   -9.15% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=64-12               97.24n ±  1%   171.35n ±  1%  +76.21% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=65536-12            826.1n ± 12%    842.5n ± 10%        ~ (p=0.937 n=6)
geomean                                             17.93n          20.96n        +16.88%

After this CL:

                                                 │    noswiss    │              swiss-cl               │
                                                 │    sec/op     │    sec/op     vs base               │
MapIter/Key=int64/Elem=int64/len=6-12               11.53n ±  2%    10.90n ± 3%   -5.42% (p=0.002 n=6)
MapIter/Key=int64/Elem=int64/len=64-12             10.180n ±  2%    9.719n ± 9%   -4.53% (p=0.043 n=6)
MapIter/Key=int64/Elem=int64/len=65536-12           10.78n ±  1%    10.07n ± 2%   -6.63% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=6-12        6.116n ±  2%    7.022n ± 1%  +14.82% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=64-12       2.403n ±  2%    1.475n ± 1%  -38.63% (p=0.002 n=6)
MapIterLowLoad/Key=int64/Elem=int64/len=65536-12    1.940n ±  3%    1.210n ± 6%  -37.67% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=6-12                66.20n ±  2%    61.54n ± 2%   -7.02% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=64-12               97.24n ±  1%   110.10n ± 1%  +13.23% (p=0.002 n=6)
MapPop/Key=int64/Elem=int64/len=65536-12            826.1n ± 12%    504.7n ± 6%  -38.91% (p=0.002 n=6)
geomean                                             17.93n          15.29n       -14.74%

For #54766.

Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10
Change-Id: Ic07f9df763239e85be57873103df5007144fdaef
Reviewed-on: https://go-review.googlesource.com/c/go/+/627156
Auto-Submit: Michael Pratt <mpratt@google.com>
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2024-11-13 18:14:17 +00:00
Michael Pratt
6e9c56e26b runtime: add benchmark of iteration over map with low load
Change-Id: I3a3b7da6245a18bf1db0c595008f0eea853ce544
Reviewed-on: https://go-review.googlesource.com/c/go/+/627155
Reviewed-by: Keith Randall <khr@golang.org>
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2024-11-13 18:14:14 +00:00
Robert Griesemer
5e91059f8b go/types: adjust type-checking of pointer types
This matches the behavior of types2.

For #49005.

Change-Id: I45661c96124f1c75c4fb6f69cbba7c73984a8231
Reviewed-on: https://go-review.googlesource.com/c/go/+/626039
Auto-Submit: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2024-11-13 17:15:38 +00:00
Russ Cox
c759ea7471 crypto/internal/fips/check: add new package
This package is in charge of the FIPS init-time code+data verification.

If GODEBUG=fips140=off or the empty string, then no verification
happens. Otherwise, the setting must be "on", "debug", or "only",
all of which enable verification. If the setting is "debug", successful
verification prints a message to that effect. Otherwise successful
verification is quiet.

The linker leaves special information for this package to use.
See cmd/internal/obj/fips.go and cmd/link/internal/ld/fips.go,
both submitted in earlier CLs, for details.

For #69536.

Change-Id: Ie1fe29f316db290e0bd7df0a5a09108be4779d63
Reviewed-on: https://go-review.googlesource.com/c/go/+/625998
Reviewed-by: Filippo Valsorda <filippo@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
2024-11-13 10:42:11 +00:00
Keith Randall
2bbc6a4512 cmd/asm: fix format string so vet doesn't complain
Fixes #70309

Change-Id: I4a3e27e89bdfda66d64f2efbb4c08a5ddde34a52
Reviewed-on: https://go-review.googlesource.com/c/go/+/626040
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Auto-Submit: Keith Randall <khr@golang.org>
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Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2024-11-13 09:40:14 +00:00
chenguoqi
84e58c84fd cmd/internal/obj: add tool to generate Cnames string
Add cmd/internal/obj/mkcnames.go to do the generation and update
the architecture packages to use it to maintain the Cnames tables.

Currently works correctly on arm64,loong64,mips,ppc64 and s390x.

Change-Id: I5220b0ba6d8a8a5fcc4d9774731eb2af69a671af
Reviewed-on: https://go-review.googlesource.com/c/go/+/622256
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
2024-11-13 05:02:13 +00:00
Russ Cox
239dbd7dba cmd/compile, cmd/link: add FIPS verification support
For FIPS init-time code+data verification, we need to arrange to
put the FIPS symbols into contiguous regions of the executable
and then record those sections along with the expected checksum.

The cmd/internal/obj changes identify the FIPS symbols and give
them distinguished types, which the linker then places in contiguous
regions. The linker also writes out information to use at run time
to find the FIPS sections, along with the expected hash.

See cmd/internal/obj/fips.go and cmd/link/internal/ld/fips.go
for more details.

The code is disabled in this commit.
CL 625998 and 625999 adds tests.
CL 626000 enables the code.

For #69536.

Change-Id: I48da6db94bc0bea7428c43d4abcf999527bccfcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/625997
Auto-Submit: Russ Cox <rsc@golang.org>
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2024-11-13 01:25:15 +00:00
Russ Cox
7eeb0a188e runtime: reserve 4kB for system stack on windows-386
The failures in #70288 are consistent with and strongly imply
stack corruption during fault handling, and debug prints show
that the Go code run during fault handling is running about
300 bytes above the bottom of the goroutine stack.
That should be okay, but that implies the DLL code that called
Go's handler was running near the bottom of the stack too,
and maybe it called other deeper things before or after the
Go handler and smashed the stack that way.

stackSystem is already 4096 bytes on amd64;
making it match that on 386 makes the flaky failures go away.
It's a little unsatisfying not to be able to say exactly what is
overflowing the stack, but the circumstantial evidence is
very strong that it's Windows.

Fixes #70288.

Change-Id: Ife89385873d5e5062a71629dbfee40825edefa49
Reviewed-on: https://go-review.googlesource.com/c/go/+/627375
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Russ Cox <rsc@golang.org>
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2024-11-13 01:24:26 +00:00
Xiaolin Zhao
ab55465098 cmd/compile: wire up math/bits.TrailingZeros intrinsics for loong64
Micro-benchmark results on Loongson 3A5000 and 3A6000:

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A6000 @ 2500.00MHz
                |  bench.old   |              bench.new               |
                |    sec/op    |    sec/op     vs base                |
TrailingZeros     1.7240n ± 0%   0.8120n ± 0%  -52.90% (p=0.000 n=20)
TrailingZeros8    1.0530n ± 0%   0.8015n ± 0%  -23.88% (p=0.000 n=20)
TrailingZeros16    2.072n ± 0%    1.015n ± 0%  -51.01% (p=0.000 n=20)
TrailingZeros32   1.7160n ± 0%   0.8122n ± 0%  -52.67% (p=0.000 n=20)
TrailingZeros64   2.0060n ± 0%   0.8125n ± 0%  -59.50% (p=0.000 n=20)
geomean            1.669n        0.8470n       -49.25%

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A5000 @ 2500.00MHz
                |  bench.old   |              bench.new               |
                |    sec/op    |    sec/op     vs base                |
TrailingZeros     2.6275n ± 0%   0.9120n ± 0%  -65.29% (p=0.000 n=20)
TrailingZeros8     1.451n ± 0%    1.163n ± 0%  -19.85% (p=0.000 n=20)
TrailingZeros16    3.069n ± 0%    1.201n ± 0%  -60.87% (p=0.000 n=20)
TrailingZeros32   2.9060n ± 0%   0.9115n ± 0%  -68.63% (p=0.000 n=20)
TrailingZeros64   2.6305n ± 0%   0.9115n ± 0%  -65.35% (p=0.000 n=20)
geomean            2.456n         1.011n       -58.83%

This patch is a copy of CL 479498.
Co-authored-by: WANG Xuerui <git@xen0n.name>

Change-Id: I1a5b2114a844dc0d02c8e68f41ce2443ac3b5fda
Reviewed-on: https://go-review.googlesource.com/c/go/+/624356
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
2024-11-13 00:57:25 +00:00
Guoqi Chen
65ba6f94b3 cmd/internal/obj/loong64: add support of VMOVQ and XVMOVQ
This CL refers to the implementation of ARM64 and adds support for the following
types of SIMD instructions:
1. Move general-purpose register to a vector element, e.g.:
      VMOVQ  Rj, <Vd>.<T>[index]
      <T> can have the following values:
       B, H, W, V
2. Move vector element to general-purpose register, e.g.:
      VMOVQ     <Vj>.<T>[index], Rd
      <T> can have the following values:
       B, BU, H, HU, W, WU, VU
3. Duplicate general-purpose register to vector, e.g.:
      VMOVQ    Rj, <Vd>.<T>
      <T> can have the following values:
       B16, H8, W4, V2, B32, H16, W8, V4
4. Move vector, e.g.:
      XVMOVQ    Xj, <Xd>.<T>
      <T> can have the following values:
       B16, H8, W4, V2, Q1
5. Move vector element to scalar, e.g.:
      XVMOVQ  Xj, <Xd>.<T>[index]
      XVMOVQ  Xj.<T>[index], Xd
      <T> can have the following values:
       W, V
6. Move vector element to vector register, e.g.:
       VMOVQ     <Vn>.<T>[index], Vn.<T>
      <T> can have the following values:
       B, H, W, V

This CL only adds syntax and doesn't break any assembly that already exists.

Change-Id: I7656efac6def54da6c5ae182f39c2a21bfdf92bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/616258
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-13 00:56:19 +00:00
Tim King
0ff1d42507 cmd/compile/internal/importer: exportdata section ends with the last index of "\n$$\n"
This fixes a bug in the test only function Import where it looked for
the first instance of the string "\n$$\n" as the end of the exportdata
section. This should look for the last instance of "\n$$\n" within
the ar file.

Adds unit tests that demonstrate the error.

Added comments to tests that can correctly use the first instance.

Change-Id: I7a85afa41cf1c2902119516b757b7c6625d46d13
Reviewed-on: https://go-review.googlesource.com/c/go/+/626775
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-11-13 00:03:12 +00:00
Youlin Feng
1f8fa4941f runtime: fix iterator returns map entries after clear (pre-swissmap)
Fixes #70189
Fixes #59411

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-noswissmap
Change-Id: I4ef7ecd7e996330189309cb2a658cf34bf9e1119
Reviewed-on: https://go-review.googlesource.com/c/go/+/625275
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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2024-11-12 21:08:08 +00:00
Tim King
3efbc30f3d cmd/compile/internal/noder,go/internal/gcimporter: return an error if not an archive file
Return an error from FindExportData variants if the contents are not
an archive file.

Change-Id: I2fa8d3553638ef1de6a03e2ce46341f00ed6965f
Reviewed-on: https://go-review.googlesource.com/c/go/+/626697
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2024-11-12 19:51:37 +00:00
Ian Lance Taylor
95c729cf06 time: regenerate zoneinfo_abbrs_windows.go
For #58113

Change-Id: I5833a898991d8ac1f564863c1c63eb3e2e86f7c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/626756
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2024-11-12 18:43:12 +00:00
Ian Lance Taylor
70f6c139ec image/color/palette: add godoc link to generator program
CL 535196 accidentally changed a generated file without changing
the generator program. This updates the generator program to generate
the current file.

Change-Id: I06513c9b29c7ca4084ac3768229ef8793efe0218
Reviewed-on: https://go-review.googlesource.com/c/go/+/625901
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2024-11-12 18:35:44 +00:00
Paul E. Murphy
745ec75719 cmd/compile/internal/ssa: improve carry addition rules on PPC64
Fold constant int16 addends for usages of math/bits.Add64(x,const,0)
on PPC64. This usage shows up in a few crypto implementations;
notably the go wrapper for CL 626176.

Change-Id: I6963163330487d04e0479b4fdac235f97bb96889
Reviewed-on: https://go-review.googlesource.com/c/go/+/625899
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Keith Randall <khr@golang.org>
2024-11-12 17:40:44 +00:00
shenleban tongying
c969491ed7 doc/go_mem: fix broken paper link in go_mem.html
The link is no longer accessible.

Replace it with the ACM one.

Change-Id: I4095fd07a1bc193568cd93fbf69955ba0ba96f2b
GitHub-Last-Rev: 33b142d6e8
GitHub-Pull-Request: golang/go#70295
Reviewed-on: https://go-review.googlesource.com/c/go/+/626485
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Reviewed-by: Ian Lance Taylor <iant@google.com>
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2024-11-12 17:16:27 +00:00
Emmanuel T Odeke
c96939fbed cmd: update github.com/google/pprof dependencies
Spun out of CL 626397, this change vendors in the latest
github.com/google/pprof and that also required updating
golang.org/x/sys to v0.27.

Change-Id: I72ee514494a9e7c36a8943d78f15bdd0445c5cd5
Reviewed-on: https://go-review.googlesource.com/c/go/+/626995
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2024-11-12 01:08:33 +00:00
Guoqi Chen
fb9b946adc cmd/compile: optimize math/bits.OnesCount{16,32,64} implementation on loong64
Use Loong64's LSX instruction VPCNT to implement math/bits.OnesCount{16,32,64}
and make it intrinsic.

Benchmark results on loongson 3A5000 and 3A6000 machines:

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A5000-HV @ 2500.00MHz
            |   bench.old   |   bench.new                          |
            |    sec/op     |    sec/op       vs base               |
OnesCount      4.413n ± 0%     1.401n ± 0%   -68.25% (p=0.000 n=10)
OnesCount8     1.364n ± 0%     1.363n ± 0%         ~ (p=0.130 n=10)
OnesCount16    2.112n ± 0%     1.534n ± 0%   -27.37% (p=0.000 n=10)
OnesCount32    4.533n ± 0%     1.529n ± 0%   -66.27% (p=0.000 n=10)
OnesCount64    4.565n ± 0%     1.531n ± 1%   -66.46% (p=0.000 n=10)
geomean        3.048n          1.470n        -51.78%

goos: linux
goarch: loong64
pkg: math/bits
cpu: Loongson-3A6000 @ 2500.00MHz
            |   bench.old   |   bench.new                          |
            |    sec/op     |    sec/op       vs base              |
OnesCount       3.553n ± 0%     1.201n ± 0%  -66.20% (p=0.000 n=10)
OnesCount8     0.8021n ± 0%    0.8004n ± 0%   -0.21% (p=0.000 n=10)
OnesCount16     1.216n ± 0%     1.000n ± 0%  -17.76% (p=0.000 n=10)
OnesCount32     3.006n ± 0%     1.035n ± 0%  -65.57% (p=0.000 n=10)
OnesCount64     3.503n ± 0%     1.035n ± 0%  -70.45% (p=0.000 n=10)
geomean         2.053n          1.006n       -51.01%

Change-Id: I07a5b8da2bb48711b896387ec7625145804affc8
Reviewed-on: https://go-review.googlesource.com/c/go/+/620978
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-12 00:48:04 +00:00