Add support for SEB/SEH instructions, which are introduced in mips32r2.
SEB/SEH can be used to sign-extend byte/halfword in registers directly without passing through memory.
Ref: The MIPS32 Instruction Set, Revision 5.04: https://s3-eu-west-1.amazonaws.com/downloads-mips/documents/MD00086-2B-MIPS32BIS-AFP-05.04.pdf
Updates #60072
Change-Id: I33175ae9d943ead5983ac004bd2a158039046d65
Reviewed-on: https://go-review.googlesource.com/c/go/+/515475
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It is only used on Darwin. This fixes "go vet" on ios.
Fixes#61667
Change-Id: Iaf00fcee5d89eb8e454f75bb1c0ea62c3950b684
Reviewed-on: https://go-review.googlesource.com/c/go/+/514495
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Historically, the Transport has silently truncated invalid
Host headers at the first '/' or ' ' character. CL 506996 changed
this behavior to reject invalid Host headers entirely.
Unfortunately, Docker appears to rely on the previous behavior.
When sending a HTTP/1 request with an invalid Host, send an empty
Host header. This is safer than truncation: If you care about the
Host, then you should get the one you set; if you don't care,
then an empty Host should be fine.
Continue to fully validate Host headers sent to a proxy,
since proxies generally can't productively forward requests
without a Host.
For #60374Fixes#61431
Change-Id: If170c7dd860aa20eb58fe32990fc93af832742b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/511155
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CL 515656 updated go/types to use file base as key in the posVers map,
but introduced a panic when the corresponding *token.File is nil.
Check that pos is valid before performing the lookup.
Fixes#61822
Change-Id: I1ac9d48c831a470de8439a50022ba5f59b3e0bed
Reviewed-on: https://go-review.googlesource.com/c/go/+/516738
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Now that pcvalue keeps its cache on the M, we can drop all of the
stack-allocated pcvalueCaches and stop carefully passing them around
between lots of operations. This significantly simplifies a fair
amount of code and makes several structures smaller.
This series of changes has no statistically significant effect on any
runtime Stack benchmarks.
I also experimented with making the cache larger, now that the impact
is limited to the M struct, but wasn't able to measure any
improvements.
Change-Id: I4719ebf347c7150a05e887e75a238e23647c20cd
Reviewed-on: https://go-review.googlesource.com/c/go/+/515277
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Currently, the pcvalue cache is stack allocated for each operation
that needs to look up a lot of pcvalues. It's not always clear where
to put it, a lot of the time we just pass a nil cache, it doesn't get
reused across operations, and we put a surprising amount of effort
into threading these caches around.
This CL moves it to the M, where it can be long-lived and used by all
pcvalue lookups, and we don't have to carefully thread it across
operations.
Change-Id: I675e583e0daac887c8ef77a402ba792648d96027
Reviewed-on: https://go-review.googlesource.com/c/go/+/515276
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Currently, pcvalue only returns a valid start PC if cache is nil.
We're about to eliminate the cache argument and always use a pcvalue
cache, so make sure the cache stores the start PC and always return it
from pcvalue.
Change-Id: Ie8854af4b7e7ba1c2a17a495d9229320821daa23
Reviewed-on: https://go-review.googlesource.com/c/go/+/515275
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Specify that -benchtime can take the form Nx.
Change-Id: I1e711cdb2e19e3ff5eb2cea4e7c8843bc58696b1
GitHub-Last-Rev: 1cb13f7dba
GitHub-Pull-Request: golang/go#61756
Reviewed-on: https://go-review.googlesource.com/c/go/+/515801
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This CL changes deferreturn so that it never needs to invoke the
unwinder. Instead, in the unusual case that we recover into a frame
with pending open-coded defers, we now save the extra state needed to
find them in g.param.
Change-Id: Ied35f6c1063fee5b6044cc37b2bccd3f90682fe6
Reviewed-on: https://go-review.googlesource.com/c/go/+/515856
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
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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>
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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
Reviewed-on: https://go-review.googlesource.com/c/go/+/515775
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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
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
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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
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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
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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
Reviewed-on: https://go-review.googlesource.com/c/go/+/515855
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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
Reviewed-on: https://go-review.googlesource.com/c/go/+/516395
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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
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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
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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
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
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
Reviewed-on: https://go-review.googlesource.com/c/go/+/515755
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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
Reviewed-on: https://go-review.googlesource.com/c/go/+/515716
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
