This CL optimizes open-coded defers in two ways:
1. It modifies local variable sorting to place all open-coded defer
closure slots in order, so that rather than requiring the metadata to
contain each offset individually, we just need a single offset to the
first slot.
2. Because the slots are in ascending order and can be directly
indexed, we can get rid of the count of how many defers are in the
frame. Instead, we just find the top set bit in the active defers
bitmask, and load the corresponding closure.
Change-Id: I6f912295a492211023a9efe12c94a14f449d86ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/516199
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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These new apis are analogous to ServeFile, FileServer and NewFileTransport respectively. The main difference is that these functions operate on an fs.FS.
Fixes#51971
Change-Id: Ie56b245b795eeb7edf613657578592306945469b
GitHub-Last-Rev: 26e75c0368
GitHub-Pull-Request: golang/go#61641
Reviewed-on: https://go-review.googlesource.com/c/go/+/513956
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Change-Id: Ib3daffb8a4cc018d62ed6e5741355b1c1a206034
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These fields are no longer needed since go.dev/cl/513837.
Change-Id: I980fc9db998c293e930094bbb87e8c8f1654e39c
Reviewed-on: https://go-review.googlesource.com/c/go/+/516198
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Per discussion on CL 515135.
While at it, also use the file start position as key for the
internal map Checker.posVers.
Change-Id: I14e9b1ff9e8ee5e3ba5de181fc9c7ffc39f28261
Reviewed-on: https://go-review.googlesource.com/c/go/+/515656
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If the shared slice in a copied is modified, make a copy of it
and insert an attribute that warns of the bug.
Previously, we panicked, and panics in logging code should be avoided.
Change-Id: I24e9b0bf5c8cd09cf733e7dae8a82d025ef214e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/513760
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The following declarations related to syntactic object resolution
are now deprecated:
- Ident.Obj
- Object
- Scope
- File.{Scope,Unresolved}
- Importer
- Package, NewPackage
New programs should use the type checker instead.
Updates golang/go#52463
Updates golang/go#48141
Change-Id: I82b315f49b1341c11ae20dcbf81106084bd2ba86
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TestNetworkSymbolicLink needs to enable the Workstation service, otherwise it will fail.
This CL avoids failure by skipping testing when the Workstation service is not enabled.
Fixes#61467
Change-Id: I395952fc18329e0b0dfdec55c8a18f4007ea91de
Change-Id: I395952fc18329e0b0dfdec55c8a18f4007ea91de
GitHub-Last-Rev: 7f089d1dff
GitHub-Pull-Request: golang/go#61564
Reviewed-on: https://go-review.googlesource.com/c/go/+/512736
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Over the past few months as I read the standard library's documentation
I kept finding spots where godoc links would have helped me.
I kept adding to a stash of changes to fix them up bit by bit.
The stash has grown big enough by now, and we're nearing a release,
so I think it's time to merge to avoid git conflicts or bit rot.
Note that a few sentences are slightly reworded,
since "implements the Fooer interface" can just be "implements [Fooer]"
now that the link provides all the context needed to the user.
Change-Id: I01c31d3d3ff066d06aeb44f545f8dd0fb9a8d998
Reviewed-on: https://go-review.googlesource.com/c/go/+/508395
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CL 497276 added optimization for len(string([]byte)) by avoiding call to
slicebytetostring. However, the bytes to string expression may contain
init nodes, which need to be preserved. Otherwise, it would make the
liveness analysis confusing about the lifetime of temporary variables
created by init nodes.
Fixes#61778
Change-Id: I6d1280a7d61bcc75f11132af41bda086f084ab54
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Sorting variables by size doesn't actually do anything, but sorting by
alignment makes sure we can optimally pack variables into the stack
frame.
While here, replace the monolithic description at the top of
cmpstackvarlt with line-by-line explanations of what each comparison
is doing.
Change-Id: I860677799618130ce4a55f084cec637cb9a2e295
Reviewed-on: https://go-review.googlesource.com/c/go/+/516197
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These aren't used and don't do anything useful anyway.
Change-Id: I2865f6bbb0409fa59b1fde32abb7c5f81a6bdb7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/516195
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Change-Id: I5445f3393373423592dfdd88b91d267c2c98d113
GitHub-Last-Rev: f554da58f4
GitHub-Pull-Request: golang/go#61749
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sysctl kern.arandom has been supported since NetBSD 4.0, works inside a
chroot, has no confusing bells and whistles like Linux getrandom,
requires no complicated querying to avoid SIGSYS traps, and is what
NetBSD 10 will usee for the getentropy(3) library routine soon to
appear in POSIX.
Change-Id: I23bd84ecd5ff3e33e8958c60896db842c44667ba
GitHub-Last-Rev: 5db094c85a
GitHub-Pull-Request: golang/go#61441
Reviewed-on: https://go-review.googlesource.com/c/go/+/511036
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Converts the 5 x 8-bit source byte to two 32-bit integers.
This will reduce the number of shift operations.
benchmark old ns/op new ns/op delta
BenchmarkEncode-10 9005 4426 -50.85%
BenchmarkEncodeToString-10 10739 6155 -42.69%
benchmark old MB/s new MB/s speedup
BenchmarkEncode-10 909.69 1850.81 2.03x
BenchmarkEncodeToString-10 762.84 1331.02 1.74x
Change-Id: I9418d3436b73f94a4eb4b2b525e4f83612ff4d47
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For #60088
Change-Id: Id19435e864bcfd2adbb1492db3f8cdf2ee3c915e
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An optional interface FileInfoNames has been added.
If the parameter fi of FileInfoHeader implements the interface
the Gname and Uname of the return value Header are
provided by the method of the interface.
Also added testing.
Fixes#50102
Change-Id: I6fd06c7c9aaf29b22b7384542fe57affed33009a
Change-Id: I6fd06c7c9aaf29b22b7384542fe57affed33009a
GitHub-Last-Rev: 5e82257948
GitHub-Pull-Request: golang/go#61662
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Change-Id: I9bafc7aa4e20e7cd994b75e7576156ca68f4fc8b
GitHub-Last-Rev: e037f689bd
GitHub-Pull-Request: golang/go#61746
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If err is non-nil, use t.Fatalf to avoid panic when calling p.Wait().
Change-Id: Ief4e43ba5ad782999063941ed3b12f3fe4d93621
GitHub-Last-Rev: 5d32b3c082
GitHub-Pull-Request: golang/go#61740
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For #40329
Change-Id: Ie0cb337545ce39cd169129227c45f7d2eaebc898
GitHub-Last-Rev: c017d4c7c1
GitHub-Pull-Request: golang/go#56507
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Change-Id: If8fc77d5b04b2979707032d91112d4f33ef5e3da
GitHub-Last-Rev: d82d769c04
GitHub-Pull-Request: golang/go#55913
Reviewed-on: https://go-review.googlesource.com/c/go/+/435536
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Change-Id: I476e2a75f39c876fa9c071cada36573740d546de
GitHub-Last-Rev: dec3fb438f
GitHub-Pull-Request: golang/go#61783
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Change-Id: Ib3e8953dbdefa2b78c31b1bcbf0909bce248e423
Reviewed-on: https://go-review.googlesource.com/c/go/+/500475
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Rather than testing for architectures that use libc-based system calls,
test that it is not the single architecture that Go is still using direct
system calls. This reduces the number of changes needed for new openbsd
ports.
Updates #36435
Updates #61546
Change-Id: I79c4597c629b8b372e9efcda79e8f6ff778b9e8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/516016
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Change-Id: I7d960ebeac38262c8ee39deeed9e1a2ea2803f5f
GitHub-Last-Rev: 59c5d7ea76
GitHub-Pull-Request: golang/go#61755
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The type machVMRegionBasicInfoData is generated from C type
vm_region_basic_info_data_64_t, which is a packed struct with a
64-bit field at offset 20. We cannot use uint64 as the field type
in the Go struct, as that will be aligned at offset 24, which does
not match the C struct. Change back to [8]byte (which is what the
cgo command generates), but keep the name Offset.
Updates #61707.
Updates #50891.
Change-Id: I2932328d7f9dfe9d79cff89752666c794d4d3788
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Now that the development of the Go 1.21 release is almost done, its
release notes are moved to their eventual long-term home in x/website
in CL 516095. Delete the initial development copy here.
For golang/go#58645.
Change-Id: I5207d21289b2e7b9328c943a088f45bc81c710a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/516075
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Left out the following commits that felt more bug-fixy.
* f0de4b4f03 - crypto/x509: fix certificate validation with FQDN on Windows <Patryk Chelmecki>
* 20e08fe68c - crypto/tls: advertise correct ciphers in TLS 1.3 only mode <Monis Khan>
* 295c237b4d - crypto/tls: enforce 1.3 record version semantics <Roland Shoemaker>
Change-Id: Idd38b5c6897130424a0e8b857f371d7d384fc143
Reviewed-on: https://go-review.googlesource.com/c/go/+/515955
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Stop using BTSconst and friends when ORLconst can be used instead.
OR can be issued by more function units than BTS can, so it could
lead to better IPC. OR might take a few more bytes to encode, but
not a lot more.
Still use BTSconst for cases where the constant otherwise wouldn't
fit and would require a separate movabs instruction to materialize
the constant. This happens when setting bits 31-63 of 64-bit targets.
Add BTS-to-memory operations so we don't need to load/bts/store.
Fixes#61694
Change-Id: I00379608df8fb0167cb01466e97d11dec7c1596c
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A consequence of go.dev/cl/513837 was that calling deferreturn would
now use the unwinder to find (just) the current frame, and it turns
out there are workloads where this has a significant performance
impact.
As a simple optimization, this CL adds a fast path for deferreturn to
detect when there are pending linked defers, which allows us to skip
invoking the unwinder entirely.
Notably, this still doesn't handle the corner case of calling
deferreturn in a function that uses linked defer when dynamically
there just aren't any defers pending. It also means that after
recovering from a panic and returning to a frame that used open-coded,
we still need to use the unwinder too.
I hope to further optimize defer handling to improve these cases too,
but this is an easy, short-term optimization that relieves the
performance impact to the affected workloads.
Change-Id: I11fa73649302199eadccc27b403b231db8f33db2
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The recent version of darwin linker ld64 emits an warning about
deprecation of the -no_pie flag. Further, the new darwin linker
ld-prime ignores -no_pie flag and generates a PIE binary anyway.
Switch to building PIE binaries by default.
Updates #54482.
Updates #61229.
Change-Id: I81294dcd07a368a20e1349d56556ee2fdcb8df44
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Change-Id: If9c41bd1e0497e76d901bfd2f749fbeb1ed3ac38
GitHub-Last-Rev: f5777d8c20
GitHub-Pull-Request: golang/go#61734
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Fixes#61648
Change-Id: I6b7f4948ca89142a358d74624607daf42ea8b304
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The encoding/gob.TestLargeSlice test needs too much virtual memory
to run reliably on machines with a small address space, for example
the plan9-arm builders where user processes only have 1 gigabyte.
Fixes#60284
Change-Id: Ied88630e5ec6685e14d2060ae316abca1619f9b5
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Change-Id: I06345199ff16c80be83c345d734caef1714ec089
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The go/types changes are matching but the API changes are hidden
for now, pending acceptance of a respective proposal.
Change-Id: I2e38ff215ddbdcf93f182d3e70c03802d3ca4338
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It should be possible for the importer to construct an invalid
interface, as would have been produced by type checking.
Fixes#61737
Change-Id: I72e063f4f1a6205d273a623acce2ec08c34c3cc2
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Rather than having register encoding knowledge in each caller of opxrrr,
pass the registers into opxrrr and let it handle the encoding. This reduces
duplication and improves readability.
Change-Id: I202c503465a0169277a0f64340598203c9dcf20c
Reviewed-on: https://go-review.googlesource.com/c/go/+/461140
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
The existing Thread Local Storage (TLS) implementation for riscv64 uses
initial-exec (IE) mode, however a MOV of a TLS symbol currently loads the
thread pointer offset and not the actual address or memory location.
Rework TLS on riscv64 to generate the full instruction sequence needed to
load from or store to a TLS symbol. Additionally, provide support for both
initial-exec (IE) and local-exec (LE) TLS - in many cases we can use LE,
which is slightly more efficient and easier to support in the linker.
Change-Id: I1b43f8888b3b6b10354bbb79d604771e64d92645
Reviewed-on: https://go-review.googlesource.com/c/go/+/431103
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: M Zhuo <mzh@golangcn.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Displaying assembly language has never worked for Apple Silicon
macs (see #50891). This change uses mach_vm_region to obtain the
necessary VM mappings to allow for locating assembly instructions
for a cpu profile.
Fixes#50891
Change-Id: Ib968c55a19b481b82f63337276b552f3b18f69d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/503919
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
All TestPointerChecks cases can be executed on Windows with some minor
tweaks.
It seems that the skip has been cargo-culted from when cgo error tests
were first added in https://codereview.appspot.com/13498046.
Change-Id: I39cd05f4c90965b669d2b403f7fcd9dd9c69016c
Reviewed-on: https://go-review.googlesource.com/c/go/+/514296
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
See CL 308769
Change-Id: I0caa0a84215b3d4b8b3dc6f041b6cd9cbe2c0908
GitHub-Last-Rev: e3aa5bde23
GitHub-Pull-Request: golang/go#61657
Reviewed-on: https://go-review.googlesource.com/c/go/+/514195
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
CL 513235 switched the default wasip1 runtime in the misc/wasm
executable script, but it missed this use of the GOWASIRUNTIME
environment variable. Update this instance to make the default runtime
choice consistent.
Change-Id: Iff7f96231422747a38d65d13a940f6e9d04d835d
Reviewed-on: https://go-review.googlesource.com/c/go/+/515115
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Achille Roussel <achille.roussel@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
For #60088
Change-Id: I56586b68d5e38a46560f4ced19214f1d2db2850e
Reviewed-on: https://go-review.googlesource.com/c/go/+/514995
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Change-Id: I23e0005071fcbafeaecaa05f51712dd1de6eed01
Change-Id: I23e0005071fcbafeaecaa05f51712dd1de6eed01
GitHub-Last-Rev: 364d7c74fe
GitHub-Pull-Request: golang/go#61661
Reviewed-on: https://go-review.googlesource.com/c/go/+/514215
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Replaced t.Fatalf with t.Errorf for non-critical errors to footprint more failing test cases for better analysis of the error.
Change-Id: I6f51d21e37a4ddb95d239d8afed2154f3ef52d31
GitHub-Last-Rev: d56aa49bce
GitHub-Pull-Request: golang/go#60524
Reviewed-on: https://go-review.googlesource.com/c/go/+/499336
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
