The extended opcode field (XO) is generated incorrectly. OPVCC
assumes an X-form like layout for the XO field. MD-form insns
also have an XO field, but it is both smaller and in a different
bit position.
This hasn't been noticed since const1 == 0 matches as a register
argument instead of a constant, thus it is unlikely anyone has
attempted to assemble this instruction with a non-zero shift
argument.
Likewise, update all other MD-form instructions using OPVCC
to use the new OPMD function.
Change-Id: Id81fa2727fb701431911a05492c2038415ad0a4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/310851
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
If the address of an auto is used in a Call, we need to keep it,
as we keep the Call itself.
Fixes#45693.
Change-Id: Ie548d6dffc95bf916868a8885d4ab4cf9e86355a
Reviewed-on: https://go-review.googlesource.com/c/go/+/312670
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
cgocallback calls cgocallbackg after switching the stack. Call it
indirectly to bypass the linker's nosplit check.
Apparently (at least on Windows) cgocallbackg can use quite a bit
stack space in a nosplit chain. We have been running over the
nosplit limit, or very close to the limit. Since it switches
stack in cgocallback, it is not meaningful to count frames above
cgocallback and below cgocallbackg together. Bypass the check.
For #45658.
Change-Id: Ie22017e3f82d2c1fcc37336696f2d02757856399
Reviewed-on: https://go-review.googlesource.com/c/go/+/312669
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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LC_VERSION_MIN_MACOSX seems deprecated. Emit LC_BUILD_VERSION
instead. Also emit it on darwin/arm64, where it was not emitted
before.
Fixes#45091.
Change-Id: I18fb80d571f681da3bd258e53beb520e68f354bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/312550
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
Now that we have darwin/arm64 and ios/arm64 ports, make it based
on GOOS, instead of GOARCH.
Also drop a remaining case of 32-bit ARM.
Change-Id: I954fff980712fd3b81b561ddcb6f3a4ef73fa0b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/312549
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
These tests belong into the fixedbugs directory.
This matches the go/types organization.
No changes to the code.
Change-Id: I36bcf70672d9ea5a40175c445e1d036c603ae76f
Reviewed-on: https://go-review.googlesource.com/c/go/+/312570
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
These tests match the corresponding tests for go/types
which have been reviewed.
This CL simply removes the UNREVIEWED disclaimer.
Change-Id: I4dfe2aedc1341ebb9ba206aac1a072f32cbe1f78
Reviewed-on: https://go-review.googlesource.com/c/go/+/312569
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This test was unnecessarily commented out in CL 312190: re-enable it and
update its assertions.
Change-Id: Ic08563e25c9b05a8e35d67690f5d27a761133266
Reviewed-on: https://go-review.googlesource.com/c/go/+/312097
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
This is an exact port of CL 307949 to go/types.
Change-Id: I796f3030a86d76deb80e58bb547460b586480911
Reviewed-on: https://go-review.googlesource.com/c/go/+/312096
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Instructions such as ADD, SUB, CMP do not support ROR shift operations,
but we have not checked this at present. This CL adds this check.
Change-Id: Icac461f61ad6ddb60886a59ba34dddd29df1cc0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/310035
Reviewed-by: eric fang <eric.fang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: eric fang <eric.fang@arm.com>
Run-TryBot: eric fang <eric.fang@arm.com>
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For arm64 constant shift instructions, e.g., LSL(immediate), they use
only the low 6 bits. To conform the semantics of the hardware instructions,
this CL comments in ARM64OPS.go about restricted AuxInt ranges for the
various instructions involved.
Change-Id: I2b6560d6580e22ba7cbfa744a02b046dd5714b8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/303569
Trust: fannie zhang <Fannie.Zhang@arm.com>
Reviewed-by: Keith Randall <khr@golang.org>
It sometimes seems to time out on slow systems, perhaps due to
being run at the same time as a lot of other work.
Also move the code to testdata/testprog, so that we don't have to
build it separately.
I hope that this
Fixes#35356
Change-Id: I875b858fa23836513ae14d3116461e22fffd5352
Reviewed-on: https://go-review.googlesource.com/c/go/+/312510
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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This is a port of CL 306170 to go/types, adjusted for the different
positioning API.
Some of the error positions in tests had to be adjusted, but I think the
new locations are better.
Change-Id: Ib157fbb47d7483e3c6302bd57f5070bd74602a36
Reviewed-on: https://go-review.googlesource.com/c/go/+/312191
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Currently we call runtimeQPC as ABIInternal because it shaves off 24
bytes by not having an extra wrapper, and at the time we were exceeding
the nosplit stack limit in some cases.
However, this code was written before we had the regabiargs GOEXPERIMENT
flag, and wasn't properly flagged. Naturally, with regabiargs enabled,
it leads to garbage being returned, because it needs to store
runtimeQPC's result to the stack.
We didn't notice this because today runtimeQPC is only used in Wine, not
on any native Windows platform.
Back when I wrote this code, it appeared to be necessary on even native
Windows, but it turns out that's not true anymore. Turn it back into a
native call through a wrapper.
For #40724.
Change-Id: Ia2e5901965ef46c5f299daccef49952026854fe6
Reviewed-on: https://go-review.googlesource.com/c/go/+/312429
Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The runtime support for syscall.AllThreadsSyscall() functions had
some corner case deadlock issues when signal handling was in use.
This was observed in at least 3 build test failures on ppc64 and
amd64 architecture CGO_ENABLED=0 builds over the last few months.
The fixes involve more controlled handling of signals while the
AllThreads mechanism is being executed. Further details are
discussed in bug #44193.
The all-threads syscall support is new in go1.16, so earlier
releases are not affected by this bug.
Fixes#44193
Change-Id: I01ba8508a6e1bb2d872751f50da86dd07911a41d
Reviewed-on: https://go-review.googlesource.com/c/go/+/305149
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Pratt <mpratt@google.com>
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
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This adds a power9 version of the bytes.Index function
for little endian.
Here is the improvement on power9 for some of the Index
benchmarks:
Index/10 -0.14%
Index/32 -3.19%
Index/4K -12.66%
Index/4M -13.34%
Index/64M -13.17%
Count/10 -0.59%
Count/32 -2.88%
Count/4K -12.63%
Count/4M -13.35%
Count/64M -13.17%
IndexHard1 -23.03%
IndexHard2 -13.01%
IndexHard3 -22.12%
IndexHard4 +0.16%
CountHard1 -23.02%
CountHard2 -13.01%
CountHard3 -22.12%
IndexPeriodic/IndexPeriodic2 -22.85%
IndexPeriodic/IndexPeriodic4 -23.15%
Change-Id: Id72353e2771eba2efbb1544d5f0be65f8a9f0433
Reviewed-on: https://go-review.googlesource.com/c/go/+/311380
Run-TryBot: Carlos Eduardo Seo <carlos.seo@linaro.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
This is a direct port of CL 306171 to go/types.
Change-Id: I6f0102c76bad3f1d939074fc4c59f772dd417498
Reviewed-on: https://go-review.googlesource.com/c/go/+/312190
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
This is a port of CL 306169 to go/types, adjusted only for use of the
typeparams package, and the different positioning API.
Change-Id: I3095f4b0dae4473e75ec2a988ea282bac1a4bab3
Reviewed-on: https://go-review.googlesource.com/c/go/+/312189
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
This is a direct port of CL 310530 to go/types, adjusted only for names
and to account for the smaller size of objects in go/types, due to
(I assume) token.Pos vs syntax.Pos.
Change-Id: I0cc34d56e41c1e66b17edd0ccd3f281d97a6b235
Reviewed-on: https://go-review.googlesource.com/c/go/+/312091
Trust: Robert Findley <rfindley@google.com>
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Now that we can set experiments at build time instead of make.bash time,
we can actually write a test for field tracking!
Update #20014
This CL contains a test for the functionality fixed in CL 312069.
Change-Id: I7569a7057bbc7c88ae25ae7bf974b0c8a4e35be8
Reviewed-on: https://go-review.googlesource.com/c/go/+/312217
Trust: Keith Randall <khr@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Also add a test to testing/fstest.
Fixes#45186
Change-Id: I00e5f46ccd5269dbc266a8f2ebc9a62ebb1297b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/311649
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
While at it, add missing "invalid argument: " prefix
to a couple of local error messages, for consistency.
For #45667.
Change-Id: I814800b2f3f3750583e335c98a3f8e27030a9daa
Reviewed-on: https://go-review.googlesource.com/c/go/+/312309
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Like on openbsd/amd64, use libc instead of direct syscalls on
openbsd/arm64.
This was likely missed in CL 286815. A similar change was done for
openbsd/amd64 in CL 270380.
Updates #36435
Change-Id: Ie496a6130f1a43d30974502777db12217e65c551
Reviewed-on: https://go-review.googlesource.com/c/go/+/312229
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
This reverts CL 311829, and reenables CL 309330. The issue
should be fixed in the previous CL.
Change-Id: I69db0565c72470a1814f135d8f8ec62c781bfc5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/312094
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Reviewed-by: Than McIntosh <thanm@google.com>
Currently, in expand_calls, for each appearance of a named
variables's component, we add the named slot to f.Names list. If
a variable appears many times, we add it to f.Names many times.
Furthure, for each duplicated named slot, its entry in
f.NamedValues is a slice that contains all Values associated with
that name. This leads to quadratic behavior when iterating named
values like
for _, name := range f.Names {
for _, v := range f.NamedValues[name] {
...
}
}
This CL makes it not to add duplicated entries to f.Names.
Change-Id: I82a8d009db81ecf48b4577e0bca501feff677cdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/312093
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Reviewed-by: Than McIntosh <thanm@google.com>
When rechecking for work after transitioning from a spinning to
non-spinning M, checking timers before GC isn't useful. That is, if
there is GC work available, it will run immediately and the updated
pollUntil is unused.
Move this check to just before netpoll, where pollUntil is used. While
this technically improves efficiency in the (rare) case that we find
GC work in this block, the primary motivation is simply to improve
clarity by moving the update closer to use.
For #43997
Change-Id: Ibc7fb308ac4a582875c200659c9e272121a89f3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/308654
Trust: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
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editRequirements does a lot of work in order to respect the upper
bounds of mustSelect, and as a result it doesn't provide many promises
about conserving other things (like root dependencies).
When we add modules for missing packages, we aren't dealing with upper
bounds at all, so we would rather avoid the upper-bound overhead and
preserve the root-dependency invariants instead.
(*loader).updateRequirements does exactly that; it just needs to be
told about the additional dependencies to add.
For #36460
Change-Id: Ie0f2bc0dde18026bbd23e51357bb1d725d201680
Reviewed-on: https://go-review.googlesource.com/c/go/+/310791
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
It is not used anywhere.
Change-Id: I2b8d64902e16893ab5e1b84943f6d865c6e9c7bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/311950
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
After Russquake, all the Node ops now have different structure, update
comment to reflect that.
Change-Id: I43f859783cda457528ae4d2da9857f2cc0438b62
Reviewed-on: https://go-review.googlesource.com/c/go/+/311949
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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The comment for the Requirements.rootModules field requires that it be
"sorted and capped to length". I noticed that we were not capping it
correctly — we were capping the local variable (the rorotModules
argument itself) but not the struct field. That prompted me to
question whether we were also at some point failing to sort it
correctly, so I decided to add an explicit check.
With the explicit check, all tests continue to pass.
For #36460
Change-Id: I6687de8ef8ecc5129fa8810d678e5673752fd27b
Reviewed-on: https://go-review.googlesource.com/c/go/+/310790
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
In CL 293689, I fused the mvs.Reqs calls that were formerly in MinReqs
and TidyBuildList into a single function, updateRoots, in the hope
that it expressed a fundamental operation. As I have been working on
the lazy equivalents, I have come to realize that these functions are
deeply related but fundamentally different.
In order to help me reason about the two different roles, I am making
the two functions separate once more, but leaving them colocated in
the code.
For #36460
Change-Id: I851d6d81fbfd84f39411e0d076ee72a9909c60ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/310629
Trust: Bryan C. Mills <bcmills@google.com>
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This eliminates some awkwardly-stateful outside calls to
modload.{Disallow,Allow,}WriteGoMod.
Perhaps more importantly, it gives the loader the opportunity to
reload packages and revise dependencies after the tidied requirements
are computed. With lazy loading, dropping an irrelevant requirement
from the main module's go.mod file may (rarely) cause other test
dependencies for packages outside the main module to become
unresolved, which may require the loader to re-resolve those
dependencies, which may in turn add new roots and increase the
selected versions of modules providing other packages.
This refactoring allows the loader to iterate between tidying the
build list and reloading packages as needed, making the exact
sequencing of loading and tidying an implementation detail of the
modload package.
For #36460
For #40775
Change-Id: Ib6da3672f32153d5bd7d653d85e3672ab96cbe36
Reviewed-on: https://go-review.googlesource.com/c/go/+/310181
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Signals can be delivered on a different thread. There is no necessary
happens-before relationship between setting sig.inuse in signal_enable
and checking it in sigsend. It is theoretically possible, if unlikely,
that sig.inuse is set by thread 1, thread 2 receives a signal, does not
see that sig.inuse is set, and discards the signal. This could happen
if the signal is received immediately after the first call to signal_enable.
For #33174
Change-Id: Idb0f1c77847b7d4d418bd139e801c0c4460531d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/312131
Trust: Ian Lance Taylor <iant@golang.org>
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Don't let type parameters that are not filled in with concrete
type arguments escape from constraint type inference - such
inferred types are not "real".
While at it, implement a tparamsList.String method for debugging.
Fixes#45548.
Change-Id: I40f13ff7af08d0357a5c66234bfcdd0b7ed5fdd6
Reviewed-on: https://go-review.googlesource.com/c/go/+/311651
Trust: Robert Griesemer <gri@golang.org>
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Note that this removes an invariant:
v.Type().ConvertibleTo(t) might return true,
yet v.Convert(t) might panic nevertheless.
This is a fairly unavoidable consequence of the decision
to add the first-ever conversion that can panic.
ConvertibleTo describes a relationship between types,
but whether the conversion panics now depends on the value,
not just the type.
If this turns out to be a problem, we can add v.ConvertibleTo(t),
or something similar, to allow callers to avoid the panic.
This is the last of the changes needed to complete the implementation.
Fixes#395
Change-Id: I79b7e4dd87a67a47723e00a65d0b1ac6090371b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/301652
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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These match the changes to cmd/compile/internal/types2 in CL 301650.
Updates #395
Change-Id: I1e85b6355c8c8fdba0996c26a2505c65fab908d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/301651
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Griesemer <gri@golang.org>
These two types of *types.Field encode different concepts, so we
encode them separately (and ignore fields that don't matter for
each concept).
Change-Id: I9d1608413949a109f12a3ebd52cd7af5f476e415
Reviewed-on: https://go-review.googlesource.com/c/go/+/312130
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This is needed to make field tracking work correctly.
Change-Id: I0c3452a48d6f36862f6ee8aacc001813866c0ad4
Reviewed-on: https://go-review.googlesource.com/c/go/+/312069
Trust: Keith Randall <khr@golang.org>
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Apparently, f.Nname.Ntype.Type() doesn't work with types2, as it
doesn't set Ntype, unlike the old type checker. f.Nname.Type()
works for both.
Change-Id: I6fa8a81c9fc7b65e008d9f158b88f0d56d84c3ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/312089
Trust: Cherry Zhang <cherryyz@google.com>
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Add support for passing MSG_CMSG_CLOEXEC to the recvmsg syscall on
dragonfly, netbsd and openbsd. MSG_CMSG_CLOEXEC on freebsd is currently
broken, see https://reviews.freebsd.org/D29328.
Change-Id: Ie4c6e3cb550cd0ae32a1c2acca12edf77569e96a
Reviewed-on: https://go-review.googlesource.com/c/go/+/311570
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The implementation of accept was moved from package net to internal/poll
in CL 36799.
Change-Id: I6e5964e0ee22e9c84bc444860cdd497817451fec
Reviewed-on: https://go-review.googlesource.com/c/go/+/311571
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Break the main components of the findrunnable spinning -> non-spinning
recheck out into their own functions, which simplifies both findrunnable
and the new functions, which can make use of fancy features like early
returns.
This CL should have no functional changes.
For #43997
For #44313
Change-Id: I6d3060fcecda9920a3471ff338f73d53b1d848a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/307914
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
