The basic arch-specific hooks are implemented, which
are used for internal and external linker.
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: I4680eb0635dd0fa3d6ea8348a2488da9c7e33d3b
Reviewed-on: https://go-review.googlesource.com/c/go/+/349514
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Currently, it's not possible to send informational responses such as
103 Early Hints or 102 Processing.
This patch allows calling WriteHeader() multiple times in order
to send informational responses before the final one.
If the status code is in the 1xx range, the current content of the header map
is also sent. Its content is not removed after the call to WriteHeader()
because the headers must also be included in the final response.
The Chrome and Fastly teams are starting a large-scale experiment to measure
the real-life impact of the 103 status code.
Using Early Hints is proposed as a (partial) alternative to Server Push,
which are going to be removed from Chrome:
https://groups.google.com/a/chromium.org/g/blink-dev/c/K3rYLvmQUBY/m/21anpFhxAQAJ
Being able to send this status code from servers implemented using Go would
help to see if implementing it in browsers is worth it.
Fixes#26089Fixes#36734
Updates #26088
Change-Id: Ib7023c1892c35e8915d4305dd7f6373dbd00a19d
GitHub-Last-Rev: 06d749d345
GitHub-Pull-Request: golang/go#42597
Reviewed-on: https://go-review.googlesource.com/c/go/+/269997
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Pull in the latest published version of github.com/google/pprof
as part of go.dev/issue/36905.
Done with:
go get github.com/google/pprof@upgrade
go mod tidy
go mod vendor
For #36905.
Change-Id: I3c8279fce2f20cb940a4e46b2b850703e1fc7964
Reviewed-on: https://go-review.googlesource.com/c/go/+/406359
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
The method Location.lookup returns the "start" and "end" times bracketing seconds when that zone is in effect.
This CL does these things:
1. Exported the "start" and "end" times as time.Time form
2. Keep the "Location" of the returned times be the same as underlying time
Fixes#50062.
Change-Id: I88888a100d0fc68f4984a85c75a85a83aa3e5d80
Reviewed-on: https://go-review.googlesource.com/c/go/+/405374
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This requirement ensures that ReadDir implementations are as compatible
as possible with "*os.File".ReadDir.
The testing/fstest package already tests for equality to io.EOF.
Updates #47062.
Fixes#47086.
Change-Id: I54f911a34e507a3db0abc4da55a19b7a50b35041
Reviewed-on: https://go-review.googlesource.com/c/go/+/333149
Reviewed-by: Michael Knyszek <mknyszek@google.com>
CL 395854 made inline pass to not inlining function with shape params,
but pass no shape arguments. This is intended to be the reverse case of
CL 361260.
However, CL 361260 is using wider condition than necessary. Though it
only needs to check against function parameters, it checks whether the
function type has no shape. It does not cause any issue, because
!fn.Type().HasShape() implies !fn.Type().Params().HasShape().
But for the reverse case, it's not true. Function may have shape type,
but has no shape arguments. Thus, we must tighten the condition to
explicitly check against the function parameters only.
Fixes#52907
Change-Id: Ib87e87ff767c31d99d5b36aa4a6c1d8baf32746d
Reviewed-on: https://go-review.googlesource.com/c/go/+/406475
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Generic functions require instantiation, which package plugin doesn't
support, and likely never will. So instead, we can just skip writing
out any generic functions, which avoids an ICE in the plugin
generation code.
This issue doesn't affect GOEXPERIMENT=unified, because it avoids
leaking any non-instantiated types/functions to the rest of the
compiler backend.
Fixes#52937.
Change-Id: Ie35529c5c241e46b77fcb5b8cca48bb99ce7bfcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/406358
TryBot-Result: Gopher Robot <gobot@golang.org>
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Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Now that Type.LinkString always returns a fully unique string ID, we
can use it in TypeHash to avoid collisions between instantiations of
the same generic type.
Updates #51734.
Change-Id: I38cb396c88259be7afa44bd4333124ca98666c3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/393716
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
The Go 1.19 code freeze has recently started. This is a time to update
all golang.org/x/... module versions that contribute packages to the
std and cmd modules in the standard library to latest master versions.
This CL updates the rest of the modules with x/build/cmd/updatestd.
For #36905.
Change-Id: I4751ca477365b036a8e5ad6a9256293b44ddcd2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/406356
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
The Go 1.19 code freeze has recently started. This is a time to update
all golang.org/x/... module versions that contribute packages to the
std and cmd modules in the standard library to latest master versions.
This CL updates only the lower-level modules arch, sys, term for better
bisection. The next CL will update further ones.
For #36905.
Change-Id: I15f6f8b015f8e425571f4f072d6942c806c6ec3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/406355
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
The change https://go.dev/cl/398475 was too complicated and expensive.
Since the whole string is always available, all that's needed
is a call to strings.HasPrefix.
While we're here, change the way lexer.backup works
so it can be called repeatedly to back up more than one
rune, in case that becomes necessary. This change also
requires less state to maintain, as lexer.width was only
there for backup, and prevented multiple steps.
Fixes#52191
Change-Id: I43b64fc66edeb8ba73ba5aa72f3b727c377dc067
Reviewed-on: https://go-review.googlesource.com/c/go/+/406476
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This hack is no longer needed since CL 393715, because LocalPkg.Prefix
is set correctly, so when we write out instantiated objects/types into
the export data, they'll already have a proper name.
Updates #51734.
Change-Id: I26cfa522f1bfdfd162685509757f51093b8b92e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/406318
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Reviewed-by: David Chase <drchase@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Historically, the compiler set types.LocalPkg.Path to "", so a lot of
compiler code checks for this, and then falls back to using
base.Ctxt.Pkgpath instead.
Since CL 393715, we now initialize types.LocalPkg.Path to
base.Ctxt.Pkgpath, so these code paths can now simply rely on Pkg.Path
always being meaningful.
Updates #51734.
Change-Id: I0aedbd7cf8e14edbfef781106a9510344d468f2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/406317
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
This test is currently overly sensitive to compiler optimizations,
because inlining can affect the order in which cmd/link emits field
references. The order doesn't actually matter though, so this CL just
tweaks the test to sort the tracked fields before printing them.
Updates #51734.
Change-Id: I3b65ca265856b2e1102f40406d5ce34610c70d40
Reviewed-on: https://go-review.googlesource.com/c/go/+/406674
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
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The goroutine profiler tests include one that launches a steady stream
of goroutines. That creates a scheduler busy loop that can prevent
forward progress in the rest of the program. Slow down the launches a
bit so other goroutines have a chance to run.
Fixes#52916
For #52934
Change-Id: I748557201b94918b1fa4960544a51a48d9cacc6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/406654
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Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Since CL 391014, cmd/compile now requires the -p flag to be set the
build system. This CL changes it to initialize LocalPkg.Path to the
provided path, rather than relying on writing out `"".` into object
files and expecting cmd/link to substitute them.
However, this actually involved a rather long tail of fixes. Many have
already been submitted, but a few notable ones that have to land
simultaneously with changing LocalPkg:
1. When compiling package runtime, there are really two "runtime"
packages: types.LocalPkg (the source package itself) and
ir.Pkgs.Runtime (the compiler's internal representation, for synthetic
references). Previously, these ended up creating separate link
symbols (`"".xxx` and `runtime.xxx`, respectively), but now they both
end up as `runtime.xxx`, which causes lsym collisions (notably
inittask and funcsyms).
2. test/codegen tests need to be updated to expect symbols to be named
`command-line-arguments.xxx` rather than `"".foo`.
3. The issue20014 test case is sensitive to the sort order of field
tracking symbols. In particular, the local package now sorts to its
natural place in the list, rather than to the front.
Thanks to David Chase for helping track down all of the fixes needed
for this CL.
Updates #51734.
Change-Id: Iba3041cf7ad967d18c6e17922fa06ba11798b565
Reviewed-on: https://go-review.googlesource.com/c/go/+/393715
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
The testCPUProfile helper function iterates until the profile contains
enough samples. However, in general very slow builders may need longer
to complete tests, and may have less-responsive schedulers (leading to
longer durations required to collect profiles with enough samples).
To compensate, slower builders generally run tests with longer timeouts.
Since this test helper already dynamically scales the profile duration
based on the collected samples, allow it to continue to retry and
rescale until it would exceed the test's deadline.
Fixes#52656 (hopefully).
Change-Id: I4561e721927503f33a6d23336efa979bb9d3221f
Reviewed-on: https://go-review.googlesource.com/c/go/+/406614
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Auto-Submit: Bryan Mills <bcmills@google.com>
Rename DynamicType's "X" field to "RType".
Split DynamicTypeAssertExpr's "T" field into "RType" and "ITab", the
same as DynamicType, updating all uses accordingly.
Change-Id: I8cec8171349c93234a10ac50708f800dee6fb1d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/405334
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
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Run-TryBot: Matthew Dempsky <mdempsky@google.com>
The TestForCompiler/LookupCustom test tries to read in the export data
for "math/big", but with a package path of "math/bigger" instead. This
has historically worked because the export data formats were designed
to not assume the package's own path, but I expect we can safely
remove support for this now.
However, since that would be a user-visible change, for now just
disable the test for GOEXPERIMENT=unified so we can land CL 393715. We
can revisit whether it's actually safe to break that go/importer use
case later.
Updates #51734.
Change-Id: I5e89314511bd1352a9f5e14a2e218a5ab00cab3c
Reviewed-on: https://go-review.googlesource.com/c/go/+/406319
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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When compiling package runtime, cmd/compile logically has two copies
of package runtime: the actual source files being compiled, and the
internal description used for emitting compiler-generated calls.
Notably, CL 393715 will cause the compiler's write barrier validation
to start recognizing that compiler-generated calls are actually calls
to the corresponding functions from the source package. And today,
there are some code paths in nowritebarrierrec code paths that
actually end up generating code to call panicshift or panicdivide.
In preparation, this CL marks those functions as
//go:yeswritebarrierrec. We probably want to actually cleanup those
code paths to avoid these calls actually (e.g., explicitly convert
shift count expressions to an unsigned integer type). But for now,
this at least unblocks CL 393715 while preserving the status quo.
Updates #51734.
Change-Id: I01f89adb72466c0260a9cd363e3e09246e39cff9
Reviewed-on: https://go-review.googlesource.com/c/go/+/406316
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: I93d8be36e44e516df70b25e20d9c0695a05510d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/349510
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
CL 395854 made inline pass to not inlining function with shape params,
but pass no shape arguments. But it does not consider the case where
function has shape params, but passing zero arguments. In this case, the
un-safe interface conversion that may be applied to a shape argument can
not happen, so it's safe to inline the function.
Fixes#52907
Change-Id: Ifa7b23709bb47b97e27dc1bf32343d92683ef783
Reviewed-on: https://go-review.googlesource.com/c/go/+/406176
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Fixes#43401.
Change-Id: I2498e77e41d845130d95012bc8623bfb29c0dda1
Reviewed-on: https://go-review.googlesource.com/c/go/+/405675
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
This is the same fix as CL 36126, but for the reverse case, function
with shape params but passed no shape arg. The same conversion problem
may occur in this case, see details explanation there.
Fixes#51909Fixes#51925
Change-Id: Ib0c1973c7511d85b4918a252c80060f1864180cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/395854
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Change-Id: I161072698dad8f184b46c6e627bbfbcb18a1b5c6
GitHub-Last-Rev: 7c8d241280
GitHub-Pull-Request: golang/go#52770
Reviewed-on: https://go-review.googlesource.com/c/go/+/404934
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Currently the GC CPU limiter doesn't account for idle application time
at all. This means that the GC could start thrashing, for example if the
live heap exceeds the max heap set by the memory limit, but the limiter
will fail to kick in when there's a lot of available idle time. User
goroutines will still be assisting at a really high rate because of
assist pacing rules, but the GC CPU limiter will fail to kick in because
the actual fraction of GC CPU time will be low if there's a lot of
otherwise idle time (for example, on an overprovisioned system).
Luckily, that idle time is usually eaten up entirely by idle mark
workers, at least during the GC cycle. And in these cases where we're
GCing continuously, that's all of our idle time. So we can take idle
mark work time and subtract it from the mutator time accumulated in the
GC CPU limiter, and that will give us a more accurate picture of how
much CPU is being spent by user goroutines on GC. This will allow the GC
CPU limiter to kick in, and reduce the impact of the thrashing.
There is a corner case here if the idle mark workers are disabled, for
example for the periodic GC, but in the case of the periodic GC, I don't
think it's possible for us to be thrashing at all, so it doesn't really
matter.
Fixes#52890.
Change-Id: Ie133a7d1f89b603434b415d51eb8733c2708a858
Reviewed-on: https://go-review.googlesource.com/c/go/+/405898
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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For TestLogOpt test case, add loong64 support to test the host
architecture and os.
The Ctz64 is not intrinsified on loong64 for TestIntendedInlining.
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: I42280e89a337dbfde55a01a134820f8ae94f6b47
Reviewed-on: https://go-review.googlesource.com/c/go/+/400237
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Hopefully made the wording clearer as I was reading it.
Change-Id: I241ce3f2ac7ae77de00dbc969540c09ef0b77496
Reviewed-on: https://go-review.googlesource.com/c/go/+/395394
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
Prep refactoring for CL 393715, after which LocalPkg.Path will no
longer be the empty string. Instead of testing `pkg.Path == ""`, we
can just test `pkg == LocalPkg`.
Updates #51734.
Change-Id: I74fff7fb383e275c9f294389d30b2220aced19e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/406059
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Now that Ntype is gone, we no longer require separate sym and nod
fields for Type. It's now always the case that t.sym == t.nod.Sym(),
or that t.sym and t.nod are both nil.
While here, rename nod to obj, to better reflect that in fact it's
always an object (i.e., *ir.Name), not merely a type literal (which no
longer exists in package ir).
Change-Id: Iba4c1590ca585b816ff6b70947ad2a1109918955
Reviewed-on: https://go-review.googlesource.com/c/go/+/405656
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Reviewed-by: David Chase <drchase@google.com>
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This test can run against package types's exported API just fine.
Change-Id: I74184eedc9ca9159b05d893c5f7c615c3dd1884d
Reviewed-on: https://go-review.googlesource.com/c/go/+/405655
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NewBasic and NewNamed take an Object (i.e., *ir.Name), so that callers
don't need to call SetNod. This CL changes NewTypeParam to follow the
same convention. Following up on recent Ntype removal, this allows
getting rid of Type.SetNod entirely.
While here, Type.SetSym is unused too.
Change-Id: Ibe0f5747e2ab4a9512b65142b6d3006704b60bd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/405654
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Historically, the compiler used to use a name node to represent "nil".
Now, "nil" is represented by NilExpr, so it's not necessary to associate
a Sym with it anymore.
Passes toolstash-check.
Change-Id: Ied1ddefa06ea55ada18ca52c8fcf71defa4c23b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/406174
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Not strictly necessary for CL 393715, but this is necessary if we want
to remove the logic from cmd/internal/obj for substituting `""` in
linker symbol names.
Updates #51734.
Change-Id: Ib13cb12fa3973389ca0c1c9a9209e00c30dc9431
Reviewed-on: https://go-review.googlesource.com/c/go/+/406058
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
The indexed export data format encodes the local package's path as "",
because that's historically how we've represented it within
cmd/compile. The format also requires the local package to be first in
the exported list of packages, and was implicitly relying on ""
sorting before other, non-empty package paths.
We can't change the format without breaking existing importers (e.g.,
go/internal/gcimporter), but we can at least remove the dependency on
LocalPkg.Path being "".
Prep refactoring for CL 393715.
Updates #51734.
Change-Id: I6dd4eafd2d538f4e81376948ef9e92fc44a5462a
Reviewed-on: https://go-review.googlesource.com/c/go/+/406057
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Chase <drchase@google.com>
Replace `pkg.Path == ""` check with `pkg == types.LocalPkg`. This is a
prep refactoring for CL 393715, which will properly initialize
types.LocalPkg.
Updates #51734.
Change-Id: I7a5428ef1f422de396762b6bc6d323992834b27c
Reviewed-on: https://go-review.googlesource.com/c/go/+/406056
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This CL moves the call to base.ParseFlags() earlier in compiler
startup. This is necessary so CL 393715 can use base.Ctxt.Pkgpath to
construct types.LocalPkg.
Updates #51734.
Change-Id: I9f5f75dc9d5fd1b1d22e98523efc95e6cec64385
Reviewed-on: https://go-review.googlesource.com/c/go/+/406055
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Prompted by CL 403996.
Change-Id: I8b480a9d361863d4770c7c9a4437431424f26994
Reviewed-on: https://go-review.googlesource.com/c/go/+/404695
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
The entries in globs2 can be globs beyond simple *.ext ones. We support only simple extension based matching, so skip entries that do not represent them.
Change-Id: Id5d089cb4067e53beb2471a5e67a59c13880a017
GitHub-Last-Rev: f725a91054
GitHub-Pull-Request: golang/go#51156
Reviewed-on: https://go-review.googlesource.com/c/go/+/385256
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
mvs.Req performs an unnecessary search for the maximum version when building minimal requirement list. Someone may be confused when reading this piece of code. The comment of the BuildList function also states that the build list contains the maximum version of each module. We just need to create a maximum version cache that maps from path to version, in the beginning of the Req function body.
Change-Id: I4b353e167f2dcc96bc13cc2e1c602bce47c72bc9
GitHub-Last-Rev: fce11d3c72
GitHub-Pull-Request: golang/go#50345
Reviewed-on: https://go-review.googlesource.com/c/go/+/374277
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This metric exports the the last GC cycle index that the GC limiter was
enabled. This metric is useful for debugging and identifying the root
cause of OOMs, especially when SetMemoryLimit is in use.
For #48409.
Change-Id: Ic6383b19e88058366a74f6ede1683b8ffb30a69c
Reviewed-on: https://go-review.googlesource.com/c/go/+/403614
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
runtime code for js contains possible write barriers that fail
the nowritebarrierrec check when internal local package naming
conventions are changed. The problem was there all already; this
allows the code to compile, and it seems to work anyway in the
(single-threaded) js/wasm environment. The offending operations
are noted with TODO, which is an improvement.
runtime code for plan9 contained an apparent allocation that was
not really an allocation; rewrite to remove the potential allocation
to avoid nowritebarrierrec problems.
This CL is a prerequisite for a pending code cleanup,
https://go-review.googlesource.com/c/go/+/393715
Updates #51734.
Change-Id: I93f31831ff9b92632137dd7b0055eaa721c81556
Reviewed-on: https://go-review.googlesource.com/c/go/+/405901
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The compiler may choose to inline multiple layers of function call, such
that A calling B calling C may end up with all of the instructions for B
and C written as part of A's function body.
Within that function body, some PCs will represent code from function A.
Some will represent code from function B, and for each of those the
runtime will have an instruction attributable to A that it can report as
its caller. Others will represent code from function C, and for each of
those the runtime will have an instruction attributable to B and an
instruction attributable to A that it can report as callers.
When a profiling signal arrives at an instruction in B (as inlined in A)
that the runtime also uses to describe calls to C, the profileBuilder
ends up with an incorrect cache of allFrames results. That PC should
lead to a location record in the profile that represents the frames
B<-A, but the allFrames cache's view should expand the PC only to the B
frame.
Otherwise, when a profiling signal arrives at an instruction in C (as
inlined in B in A), the PC stack C,B,A can get expanded to the frames
C,B<-A,A as follows: The inlining deck starts empty. The first tryAdd
call proposes PC C and frames C, which the deck accepts. The second
tryAdd call proposes PC B and, due to the incorrect caching, frames B,A.
(A fresh call to allFrames with PC B would return the frame list B.) The
deck accepts that PC and frames. The third tryAdd call proposes PC A and
frames A. The deck rejects those because a call from A to A cannot
possibly have been inlined. This results in a new location record in the
profile representing the frames C<-B<-A (good), as called by A (bad).
The bug is the cached expansion of PC B to frames B<-A. That mapping is
only appropriate for the resulting protobuf-format profile. The cache
needs to reflect the results of a call to allFrames, which expands the
PC B to the single frame B.
For #50996
For #52693Fixes#52764
Change-Id: I36d080f3c8a05650cdc13ced262189c33b0083b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/404995
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Rhys Hiltner <rhys@justin.tv>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Panic avoids any write barriers in the runtime by checking first
and throwing if called inappropriately, so it is "okay". Adding
this annotation repairs recursive write barrier checking, which
becomes more thorough when the local package naming convention
is changed from "" to the actual package name.
This CL is a prerequisite for a pending code cleanup,
https://go-review.googlesource.com/c/go/+/393715
Updates #51734.
Change-Id: If831a3598c6c8cd37a8e9ba269f822cd81464a13
Reviewed-on: https://go-review.googlesource.com/c/go/+/405900
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: David Chase <drchase@google.com>
This (1) "just makes sense"
and (2) avoids a weird bug in some name-dependent calling conventions
in wasm code generation, when the local pkg has a real name instead of "".
The calling conventions are triggered for a "wrapper" function, and somehow
an abiwrapper was taken to be a "wrapper" function, resulting in the use of
an invalid register. But abiwrapping has no business being in js/wasm code
generation, so just turn that off.
Updates #51734.
For posterity, that crash is:
GOSSAFUNC=wasmTruncU GOMAXPROCS=1 \
GOOS=js GOARCH=wasm GOEXPERIMENT=regabi,regabiargs
/Users/drchase/work/go-quick/bin/go build \
-gcflags=all=-d=abiwrap -o a.exe \
GOROOT/test/abi/bad_select_crash.go
<autogenerated>:1: internal compiler error: panic: bad Get: invalid register
goroutine 1 [running]:
runtime/debug.Stack()
runtime/debug/stack.go:24 +0x65
cmd/compile/internal/base.FatalfAt({0xc80?, 0x0?}, {0x195c85e, 0x9}, {0xc005ef72c8, 0x1, 0x1})
/Users/drchase/work/go-quick/src/cmd/compile/internal/base/print.go:227 +0x1d7
cmd/compile/internal/base.Fatalf(...)
/Users/drchase/work/go-quick/src/cmd/compile/internal/base/print.go:196
cmd/compile/internal/gc.handlePanic()
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/main.go:48 +0x85
panic({0x18bf3c0, 0x1ad0430})
runtime/panic.go:854 +0x26d
cmd/internal/obj/wasm.assemble(0xc0000f8200, 0xc001c74880, 0x0?)
/Users/drchase/work/go-quick/src/cmd/internal/obj/wasm/wasmobj.go:920 +0x1958
cmd/internal/obj.Flushplist(0xc0000f8200, 0xc005ef79a8, 0xc0022264c0, {0x7ff7bfefdd17, 0x7})
/Users/drchase/work/go-quick/src/cmd/internal/obj/plist.go:151 +0x784
cmd/compile/internal/objw.(*Progs).Flush(...)
/Users/drchase/work/go-quick/src/cmd/compile/internal/objw/prog.go:124
cmd/compile/internal/ssagen.Compile(0xc000707e00, 0xc001b4d620?)
/Users/drchase/work/go-quick/src/cmd/compile/internal/ssagen/pgen.go:208 +0x495
cmd/compile/internal/gc.compileFunctions.func4.1(0xc005ef7a01?)
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:153 +0x3a
cmd/compile/internal/gc.compileFunctions.func2(0x0?)
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:125 +0x1e
cmd/compile/internal/gc.compileFunctions.func4({0xc004685000, 0x79f, 0xa00?})
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:152 +0x53
cmd/compile/internal/gc.compileFunctions()
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:163 +0x162
cmd/compile/internal/gc.Main(0x198d3d8)
/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/main.go:297 +0x108a
main.main()
/Users/drchase/work/go-quick/src/cmd/compile/main.go:55 +0xdd
Change-Id: I79f039e2494f78efba60e52ab1110d62656fb7ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/405899
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: I4b0247a331256162b47fbd94589f46ba062d4d44
Reviewed-on: https://go-review.googlesource.com/c/go/+/387234
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
