When running go tool compile,
go tool is running compile as a subprocess.
Killing go tool with Process.Kill leaves the subprocess behind.
Send an interrupt signal first, which it can forward on
to the compile subprocess.
Also report the timeout in errorcheck -t.
Change-Id: I7ae0029bbe543ed7e60e0fea790dd0739d10bcaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/282313
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This way, if a SIGINT is sent to the go command,
it is forwarded on to the underlying tool.
Otherwise trying to use os.Process.Signal to kill
"go tool compile" only kills the "go tool" not the "compile".
Change-Id: Iac7cd4f06096469f5e76164df813a379c0da3822
Reviewed-on: https://go-review.googlesource.com/c/go/+/282312
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This package implements a parser for the new //go:build constraint lines.
The parser also handles // +build lines, to be able to process legacy files.
This will not be used in the standard library until Go 1.17,
but it seems worth publishing in Go 1.16 so that code that
needs to process both kinds of lines once Go 1.17 comes out
will be able to build using Go 1.16 as well.
For #41184. Design in https://golang.org/design/draft-gobuild.
Change-Id: I756c0de4081c5039e8b7397200e5274f223ab111
Reviewed-on: https://go-review.googlesource.com/c/go/+/240604
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Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
The testing.TestFS function assumes that the file system it's testing
doesn't change under it. Clarify this in the documentation and fix the
use of os.TestDirFS that's currently susceptible to this race.
Fixes#42637.
Change-Id: Ia7792380726177f8953d150ee87381b66cb01cb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/282452
Trust: Austin Clements <austin@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
This change modifies the *-by-size metrics' units to be based off the
bucket's unit (bytes) as opposed to the unit of the counts (objects).
This convention is more in-line with distributions in other metrics
systems.
Change-Id: Id3b68a09f52f0e1ff9f4346f613ae1cbd9f52f73
Reviewed-on: https://go-review.googlesource.com/c/go/+/282352
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
The documentation for Glob was copied from filepath.Glob, and needs a bit
of tweaking: paths are not rooted at slash; the separator is always '/'.
Fixes#43537
Change-Id: Id64daa137e2762b66a82a5b9e60bbe603f4e2f5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/282173
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Current optimization: When we copy a->b and then b->c, we might as well
copy a->c instead of b->c (then b might be dead and go away).
*Except* if a is a volatile location (might be clobbered by a call).
In that case, we really do want to copy a immediately, because there
might be a call before we can do the a->c copy.
User calls can't happen in between, because the rule matches up the
memory states. But calls inserted for memory barriers, particularly
runtime.typedmemmove, can.
(I guess we could introduce a register-calling-convention version
of runtime.typedmemmove, but that seems a bigger change than this one.)
Fixes#43570
Change-Id: Ifa518bb1a6f3a8dd46c352d4fd54ea9713b3eb1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/282492
Trust: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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This change modifies the semantics of
runtime/metrics.Float64Histogram.Buckets to remove implicit buckets to
that extend to positive and negative infinity and instead defines all
bucket boundaries as explicitly listed.
Bucket boundaries remain the same as before except
/gc/heap/allocs-by-size:objects and /gc/heap/frees-by-size:objects no
longer have a bucket that extends to negative infinity.
This change simplifies the Float64Histogram API, making it both easier
to understand and easier to use.
Also, add a test for allocs-by-size and frees-by-size that checks them
against MemStats.
Fixes#43443.
Change-Id: I5620f15bd084562dadf288f733c4a8cace21910c
Reviewed-on: https://go-review.googlesource.com/c/go/+/281238
Run-TryBot: Michael Knyszek <mknyszek@google.com>
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Trust: Michael Knyszek <mknyszek@google.com>
The findEmbed function looking for comment by readbyte,
however it might have constant or variables that contains
comment.
Maybe we should use ast parser in the future.
Fixes#43373
Change-Id: I92544384fc4c11363d8b2f6b9898c8dea1602767
Reviewed-on: https://go-review.googlesource.com/c/go/+/280332
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Meng Zhuo <mzh@golangcn.org>
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Change-Id: Ifcc565b34b3c3bb7ee62bb0525648a5d2895bf0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/282013
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
For #41127
Change-Id: I794a082299c6dce4202223197ece1864bed36810
Reviewed-on: https://go-review.googlesource.com/c/go/+/282555
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
io/fs is introduced in 2020, not 2009 nor 2010
Change-Id: I7d63aae17b1f8c3af1ded2f639e3fb76ff2aea81
Reviewed-on: https://go-review.googlesource.com/c/go/+/282232
Trust: Meng Zhuo <mzh@golangcn.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
In particular bring in CL 201973, which reverts support for multiple
keys in a struct tag.
For #40281
For #43083
For #43226
Change-Id: I66e76639cbbca55bdbff6956acdb0a97650fdd31
Reviewed-on: https://go-review.googlesource.com/c/go/+/282412
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Proposal #40281 was initially accepted, but has now been declined.
This CL removes most of the work done to implement it.
Specifically this reverts CLs 248341, 274448, 274474, and 278392.
For #40281
For #43226
Change-Id: I5a9ebb4d9cb5fb0962434b64c59beb8343030be5
Reviewed-on: https://go-review.googlesource.com/c/go/+/281515
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
The documentation was copied from filepath.WalkFunc, and the copy was
not fully adjusted to the new circumstances.
Fixes#43536
Change-Id: I09687c7656e6938ebd9fc1e1643d34be88cf141d
Reviewed-on: https://go-review.googlesource.com/c/go/+/282172
Trust: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Marco Gazerro <gazerro@open2b.com>
golang.org/cl/251878 disallowed non-ASCII characters in import paths,
in module mode. They were already disallowed in module paths, so this
change just extended the restriction to the package subdirectory of
the module. Update the release notes to alert users of this change.
Fixes#43052
Change-Id: I1caf9ef978dd3ac599a3f82c5c376ad62e6fc436
Reviewed-on: https://go-review.googlesource.com/c/go/+/282194
Trust: Michael Matloob <matloob@golang.org>
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For the example in #43551, before late call expansion, the OpArg type is
decomposed to int64. But the late call expansion is currently decompose
it to "x.Key" instead.
This CL make expand_calls decompose further for struct { 1-field type }
and array [1]elem.
This matches the previous rules for early decompose args:
(StructSelect (StructMake1 x)) => x
(ArraySelect (ArrayMake1 x)) => x
Fixes#43551
Change-Id: I2f1ebe18cb81cb967f494331c3d237535d2859e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/282332
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: David Chase <drchase@google.com>
This change the struct fields for EmbedPatterns and EmbedFiles
to the Package struct listed in the go list documentation that
specifies the fields available to the go list template.
Fixes#43081
Change-Id: I89c325a9d6292a6ce484ee588b172d2f84e2333a
Reviewed-on: https://go-review.googlesource.com/c/go/+/282195
Trust: Michael Matloob <matloob@golang.org>
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The text/template functions are stored in a data structure shared by
all related templates, so do the same with the original, unwrapped,
functions on the html/template side.
For #39807Fixes#43295
Change-Id: I9f64a0a601f1151c863a2833b5be2baf649b6cef
Reviewed-on: https://go-review.googlesource.com/c/go/+/279492
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
In general, we don't want to encourage reading them from CSRs, and
applications that really want to can parse the Extensions field.
Note that this also fixes a bug where the error of
parseKeyUsageExtension was not handled in parseCertificateRequest.
Fixes#43477
Updates #37172
Change-Id: Ia5707b0e23cecc0aed57e419a1ca25e26eea6bbe
Reviewed-on: https://go-review.googlesource.com/c/go/+/281235
Trust: Filippo Valsorda <filippo@golang.org>
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Reviewed-by: Roland Shoemaker <roland@golang.org>
We are trying to avoid by not automatically updating go.mod. The
suggestion should be that users actually add the dependencies they
need, and the command in an easily copy-pastable form now.
Fixes: #43430
Change-Id: I2227dab498fcd8d66184c94ebe9e776629ccadfd
Reviewed-on: https://go-review.googlesource.com/c/go/+/280713
Run-TryBot: Baokun Lee <bk@golangcn.org>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
The panic message erroneously refers to float64 values.
Change-Id: I83380f41d6c28a72bc69a94b9bcdf9d42b1503c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/281236
Trust: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Michael Pratt <mpratt@google.com>
Fix a deadlock in DumpRequestOut which can occur if the request is
cancelled between response being sent and it being processed.
Also:
* Ensure we don't get a reader leak when an error is reported by the
transport before the body is consumed.
* Add leaked goroutine retries to avoid false test failures.
Fixes#38352
Change-Id: I83710791b2985b997f61fe5b49eadee0bb51bdee
Reviewed-on: https://go-review.googlesource.com/c/go/+/232798
Reviewed-by: Bryan C. Mills <bcmills@google.com>
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Trust: Damien Neil <dneil@google.com>
modload.Init now sets the default value for -mod if it wasn't set
explicitly. This happens before go.mod is loaded, so
modload.LoadModFile sets the default value again in order to enable
automatic vendoring.
Previously, cfg.BuildMod wasn't set at all if LoadModFile wasn't
called, as is the case for commands that run outside of a module
root. This problem only affected 'go install pkg@version' since other
commands are either forbidden in module mode or run with -mod=mod
(like 'go get' and 'go mod' subcommands).
This change also suppresses "missing sum" errors when -mod=readonly is
enabled and there is no module root.
Fixes#43278
Related #40278
Change-Id: I6071cc42bc5e24d0d7e84556e5bfd8e368e0019d
Reviewed-on: https://go-review.googlesource.com/c/go/+/279490
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For #41191
Change-Id: I75d327759c3d9ef061c19a80b9b2619038dedf68
Reviewed-on: https://go-review.googlesource.com/c/go/+/281492
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Now that CaptureVars is gone, we can remove the extra code in escape
analysis that only served to appease toolstash -cmp.
Change-Id: I8c811834f3d966e76702e2d362e3de414c94bea6
Reviewed-on: https://go-review.googlesource.com/c/go/+/281544
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Capture analysis is now part of escape analysis.
Passes toolstash -cmp.
Change-Id: Ifcd3ecc342074c590e0db1ff0646dfa1ea2ff57b
Reviewed-on: https://go-review.googlesource.com/c/go/+/281543
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Currently we rely on the type-checker to do some basic data-flow
analysis to help decide whether function literals should capture
variables by value or reference. However, this analysis isn't done by
go/types, and escape analysis already has a better framework for doing
this more precisely.
This CL extends escape analysis to recalculate the same "byval" as
CaptureVars and check that it matches. A future CL will remove
CaptureVars in favor of escape analysis's calculation.
Notably, escape analysis happens after deadcode removes obviously
unreachable code, so it sees the AST without any unreachable
assignments. (Also without unreachable addrtakens, but
ComputeAddrtaken already happens after deadcode too.) There are two
test cases where a variable is only reassigned on certain CPUs. This
CL changes them to reassign the variables unconditionally (as no-op
reassignments that avoid triggering cmd/vet's self-assignment check),
at least until we remove CaptureVars.
Passes toolstash -cmp.
Change-Id: I7162619739fedaf861b478fb8d506f96a6ac21f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/281535
Trust: Matthew Dempsky <mdempsky@google.com>
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The gc implementation has had precise GC for a while now, so we can
enable these tests more broadly.
Confirmed that they still fail with gccgo 10.2.1.
Change-Id: Ic1c0394ab832024a99e34163c422941a3706e1a2
Reviewed-on: https://go-review.googlesource.com/c/go/+/281542
Trust: Matthew Dempsky <mdempsky@google.com>
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In a gccgo installation the standard library sources are not available.
Change-Id: I929f3645e3ac95a1fa7047d6a3d243159a86ba66
Reviewed-on: https://go-review.googlesource.com/c/go/+/281493
Trust: Ian Lance Taylor <iant@golang.org>
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The backend doesn't synchronize compilation of functions with their
enclosed function literals, so it's not safe to double-check that
IsClosureVar isn't set on the underlying Name. Plenty of frontend
stuff would blow-up if this was wrong anyway, so it should be fine to
omit.
Change-Id: I3e97b64051fe56d97bf316c9b5dcce61f2082428
Reviewed-on: https://go-review.googlesource.com/c/go/+/281812
Trust: Matthew Dempsky <mdempsky@google.com>
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tracebackothers is called from fatal throw/panic.
A fatal throw may be taken with allglock held (notably in the allocator
when allglock is held), which would cause a deadlock in tracebackothers
when we try to take allglock again. Locking allglock here is also often
a lock order violation w.r.t. the locks held when throw was called.
Avoid the deadlock and ordering issues by skipping locking altogether.
It is OK to miss concurrently created Gs (which are generally avoided by
freezetheworld(), and which were possible previously anyways if created
after the loop).
Fatal throw/panic freezetheworld(), which should freeze other threads
that may be racing to modify allgs. However, freezetheworld() does _not_
guarantee that it stops all other threads, so we can't simply drop the
lock.
Fixes#42669
Updates #43175
Change-Id: I657aec46ed35fd5d1b3f1ba25b500128ab26b088
Reviewed-on: https://go-review.googlesource.com/c/go/+/270861
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Trust: Michael Pratt <mpratt@google.com>
There's a bunch of code that wants to map closure variables back to
their original name, so add a single Name.Canonical method that they
can all use.
Also, move the Byval flag from being stored on individual closure
variables to being stored on the canonical variable.
Passes toolstash -cmp.
Change-Id: Ia3ef81af5a15783d09f04b4e274ce33df94518e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/281541
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
ir.StaticValue currently relies on CaptureVars setting Addrtaken for
variables that are assigned within nested function literals. We want
to move that logic to escape analysis, but ir.StaticValue is used in
inlining and devirtualization, which happen before escape
analysis.
The long-term solution here is to generalize escape analysis's precise
reassignment tracking for use by other optimization passes, but for
now we just generalize ir.StaticValue to not depend on Addrtaken
anymore. Instead, it now also pays attention to OADDR nodes as well as
recurses into OCLOSURE bodies.
Passes toolstash -cmp.
Change-Id: I6114e3277fb70b235f4423d2983d0433c881f79f
Reviewed-on: https://go-review.googlesource.com/c/go/+/281540
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
For OINDEX expressions, ir.OuterValue depends on knowing the indexee's
type. Rather than silently acting as though it's not an array, make it
loudly fail.
The only code that needs to be fixed to support this is checkassign
during typechecking, which needs to avoid calling ir.OuterValue now if
typechecking the assigned operand already failed.
Passes toolstash -cmp.
Change-Id: I935cae0dacc837202bc6b63164dc2f0a6fde005c
Reviewed-on: https://go-review.googlesource.com/c/go/+/281539
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
CaptureVars is responsible for deciding whether free variables should
be captured by value or by reference, but currently it also makes up
for some of the short-comings of the frontend symbol resolution /
type-checking algorithms. These are really separate responsibilities,
so move the latter into type-checking where it fits better.
Passes toolstash -cmp.
Change-Id: Iffbd53e83846a9ca9dfb54b597450b8543252850
Reviewed-on: https://go-review.googlesource.com/c/go/+/281534
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Dump uses reflection to print IR nodes, and it only knew how to print
out the Nodes slice type itself. This CL adds support for printing any
slice whose element type implements Node, such as SwitchStmt and
SelectStmt's clause lists.
Change-Id: I2fd8defe11868b564d1d389ea3cd9b8abcefac62
Reviewed-on: https://go-review.googlesource.com/c/go/+/281537
Trust: Matthew Dempsky <mdempsky@google.com>
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These aren't part of the Node interface anymore, so no need to keep
them around.
Passes toolstash -cmp.
[git-generate]
cd src/cmd/compile/internal/ir
: Fix one off case that causes trouble for rf.
sed -i -e 's/n.SetClass(ir.PAUTO)/n.Class_ = ir.PAUTO/' ../ssa/export_test.go
pkgs=$(go list . ../...)
rf '
ex '"$(echo $pkgs)"' {
var n *Name
var c Class
n.Class() -> n.Class_
n.SetClass(c) -> n.Class_ = c
}
rm Name.Class
rm Name.SetClass
mv Name.Class_ Name.Class
'
Change-Id: Ifb304bf4691a8c455456aabd8aa77178d4a49500
Reviewed-on: https://go-review.googlesource.com/c/go/+/281294
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
When exporting signature types, we include the originating package,
because it's exposed via go/types's API. And as a consistency check,
we ensure that the parameter names came from that same package.
However, we were getting this wrong in the case of exported variables
that were initialized with a method value using an imported method. In
this case, when we created the method value wrapper function's
type (which is reused as the variable's type if none is explicitly
provided in the variable declaration), we were reusing the
original (i.e., imported) parameter names, but the newly created
signature type was associated with the current package instead.
The correct fix here is really to preserve the original signature
type's package (along with position and name for its parameters), but
that's awkward to do at the moment because the DeclFunc API requires
an ir representation of the function signature, whereas we only
provide a way to explicitly set packages via the type constructor
APIs.
As an interim fix, we associate the parameters with the current
package, to be consistent with the signature type's package.
Fixes#43479.
Change-Id: Id45a10f8cf64165c9bc7d9598f0a0ee199a5e752
Reviewed-on: https://go-review.googlesource.com/c/go/+/281292
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
It's an error to call Int64Val on constants that don't fit into
int64. CL 272654 made the compiler stricter about detecting misuse,
and revealed that we were using it improperly in detecting consecutive
integer-switch cases. That particular usage actually did work in
practice, but it's easy and best to just fix it.
Fixes#43480.
Change-Id: I56f722d75e83091638ac43b80e45df0b0ad7d48d
Reviewed-on: https://go-review.googlesource.com/c/go/+/281272
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
So we can remove Name.CloneName now.
Passes toolstash -cmp.
Change-Id: I63e57ba52a7031e06fe9c4ee9aee7de6dec70792
Reviewed-on: https://go-review.googlesource.com/c/go/+/281312
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
In inl.go, that code path is unused, since we added ir.BasicLit to
represent unnamed OLITERALs.
In race.go, rather than cloning ir.RegFP, we can just create it from
scratch again.
Passes toolstash -cmp (incl. w/ -race).
Change-Id: I8e063e4898d2acf056ceca5bc03df6b40a14eca9
Reviewed-on: https://go-review.googlesource.com/c/go/+/281192
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
After the previous cleanup/optimization CLs, ascompatee now correctly
handles map assignments too. So remove the code from order.mapAssign,
which causes us to assign to the map at the wrong point during
execution. It's not every day you get to fix an issue by only removing
code.
Thanks to Cuong Manh Le for test cases and continually following up on
this issue.
Passes toolstash -cmp. (Apparently the standard library never uses
tricky map assignments. Go figure.)
Fixes#23017.
Change-Id: Ie0728103d59d884d00c1c050251290a2a46150f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/281172
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
After the previous two optimization CLs, this code path now generates
the same code as ascompatee does anyway. So just use that and remove
some redundant code.
Passes toolstash -cmp.
Change-Id: I5e2e5c6dbea64d8e91abe0f2cf51aa5bb86576d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/281154
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
