When we have x.M(args) where x is a value of type parameter type, we
currently cast x to the bound of that type parameter (which is an interface)
and then invoke the method on that interface. That's pretty inefficient
because:
1) We need to convert x to an interface, which often requires allocation.
With CL 378178 it is at least stack allocation, but allocation nontheless.
2) We need to call through wrapper functions to unpack the interface
into the right argument locations for the callee.
Instead, let's just call the target directly. The previous CL to this one
added method expression closures to the dictionary, which is a simple
captureless closure that implements T.M for type parameter T and method M.
So to implement x.M(args) for x of type T, we use methodexpr(T,M)(x, args).
We just need to move x from the receiver slot to the first argument, and
use the dictionary entry to implement the polymorphism. This works because
we stencil by shape, so we know how to marshal x for the call even though
we don't know its exact type.
We should be able to revert CL 378178 after this one, as that optimization
will no longer be necssary as we're not converting values to interfaces
to implement this language construct anymore.
Update #50182
Change-Id: I813de4510e41ab63626e58bd1167f9ae93016202
Reviewed-on: https://go-review.googlesource.com/c/go/+/385274
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Currently we do quite a dance for method expressions on generic
types. We write a new closure, and in that closure convert the
receiver to an interface with the required method, then call the
target using an interface call.
Instead in this CL, we just allocate a (captureless) closure in the
dictionary which implements that method expression.
This CL makes method expressions faster and simpler. But the real win
is some followon CLs, where we can use the same closure to implement
bound method calls using the same closure, instead of converting to
interface and having wrappers convert back. Much faster and simpler.
Still thinking about how to do method values. The receiver still
needs to be captured, so there must be some closure involved, I think.
Update #50182
Change-Id: I1fbd57e7105663f8b049955b8f4111649a5f4aa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/385254
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Add the riscv64 register ABI constants and allow regabi
value to be set for riscv64
Change-Id: I3ce98bf9a29d2acc00f92650b27bc59884ed62ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/359336
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Historically, we sometimes recorded imports based on either package
path ("net/http") or object file path ("net/http.a"). But modern Go
build systems always use package path, and the extra ".a" suffix
doesn't mean anything anyway.
Change-Id: I6060ef8bafa324168710d152a353f4d8db062133
Reviewed-on: https://go-review.googlesource.com/c/go/+/395254
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The correct (or at least mostly commonly used) name for addresses of the
form ::ffff:192.0.2.128 is "IPv4-mapped IPv6". Some of the comments in
the netip package used that name, but others used "IPv6-mapped IPv4" or
"v6-mapped". This change makes the usage of the term consistent.
Change-Id: Ic01309ddf9252705a2387322d940b777e88800a5
GitHub-Last-Rev: 56044dcb97
GitHub-Pull-Request: golang/go#51950
Reviewed-on: https://go-review.googlesource.com/c/go/+/395914
Reviewed-by: Damien Neil <dneil@google.com>
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The detection of the "unknown charset" case was too tailored
to one specific address parser. Make it generalize, so that custom
address parsers behave the same way as the default one
for character sets they do not handle.
Fixes#41625.
Change-Id: I347d4bb6844d0a1f23e908b776d21e8be5af3874
Reviewed-on: https://go-review.googlesource.com/c/go/+/283632
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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The only usage of NewClosureExpr is inside NewClosureFunc, which is its
alternative version. So just remove NewClosureExpr and inline it there.
Change-Id: I1900f4fbb48d7b4f6e6a857f7f7760cd27302671
Reviewed-on: https://go-review.googlesource.com/c/go/+/395855
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When run with race detector the test fails without the fix.
Fixes#51799
Change-Id: I273adb6d3a2b1e0d606b9c27ab4c6a9aa4aa8064
GitHub-Last-Rev: a5ddd146a2
GitHub-Pull-Request: golang/go#51805
Reviewed-on: https://go-review.googlesource.com/c/go/+/393974
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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For 1-byte type, we have a special case for converting to interface
type. But we missed an optimization for sole component-ed types, this CL
add that one.
goos: linux
goarch: amd64
cpu: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
Benchmark_BoolField-8 1000000000 0.6473 ns/op
Benchmark_ByteField-8 1000000000 0.6094 ns/op
Benchmark_Uint8Field-8 1000000000 0.6385 ns/op
Benchmark_Int16Field-8 785179434 1.481 ns/op
Benchmark_Int32Field-8 796127782 1.539 ns/op
Benchmark_Int64Field-8 718815478 1.657 ns/op
Fixes#49879
Change-Id: Idc0e9d3ff738c8c8081b8e8d65093dacf2bcf392
Reviewed-on: https://go-review.googlesource.com/c/go/+/367755
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Add a new rewrite rule to merge ANDconst and UBFX into
UBFX.
Add test cases.
Change-Id: I24d6442d0c956d7ce092c3a3858d4a3a41771670
Reviewed-on: https://go-review.googlesource.com/c/go/+/377054
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If the http.Request passed to ReverseProxy.ServeHTTP has a context
with a non-nil Done channel, don't watch the ResponseWriter's
CloseNotify channel.
Avoids starting an extra background goroutine in the common case.
Change-Id: I1328f3e02d3025caa0f446a2f20dfc14ef604c64
Reviewed-on: https://go-review.googlesource.com/c/go/+/376415
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Damien Neil <dneil@google.com>
This CL updates test/run.go to compile xxx.dir/x.go with a package
path of "test/x" instead of just "x". This prevents collisions with
standard library packages.
It also requires updating a handful of tests to account for the
updated package paths.
Fixes#25693.
Change-Id: I49208c56ab3cb229ed667d547cd6e004d2175fcf
Reviewed-on: https://go-review.googlesource.com/c/go/+/395258
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Label symbols are only useful for relocations from text. No need
to do it for DWARF. And the PE symbol table doesn't like them.
May fix#51903.
Change-Id: Ibe6ea880d8533ba1dcc017030072c7dffee0e9e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/395215
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I was testing edge cases in gofumpt, a fork of gofmt,
and noticed that gofmt will return a bare io error on empty files,
as demonstrated by the added test case without a fix:
> ! exec $GOROOT/bin/gofmt empty.go nopackage.go
[stderr]
EOF
nopackage.go:1:1: expected 'package', found not
The problem is the code that detects concurrent modifications.
It relies on ReadFull and correctly deals with io.ErrUnexpectedEOF,
but it did not pay attention to io.EOF, which can happen when size==0.
Change-Id: I6092391721edad4584fb5922d3e3a8fb3da86493
Reviewed-on: https://go-review.googlesource.com/c/go/+/393757
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The file names reported in error messages by the compiler are
printed unchanged from the file names provided to the compiler;
the -L flag has no impact on the file names themselves, contrary
to what the old flag description suggested.
If an error is reported on a line that is affected by a //line
directive, an error message reports the file name and line as
controlled by the directive (i.e., the actual source position
is not known).
If the -L flag is provided, the actual source position is also
reported in square brackets.
This change documents this with an updated help string for the
flag.
For #36988.
Change-Id: I39ee35e6ff6cd5cfa44d87dabb05b8d78575d631
Reviewed-on: https://go-review.googlesource.com/c/go/+/395115
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
So all runtime map functions will use the same code path, make it easier
for future CL to handle stack object for map key.
Passes toolstash -cmp.
For #43753
Change-Id: I374fa4e351c1eba079e2ccb637b1ef5adad1488f
Reviewed-on: https://go-review.googlesource.com/c/go/+/321713
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CL 187617 removed oldescape_linkname.go, but forgot to remove this
directory too.
Change-Id: I6d208c4d96d636b3df93adec1ee22fe1d4f5f61d
Reviewed-on: https://go-review.googlesource.com/c/go/+/395259
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bug302 compiles p.go with -p=p, and then manually creates a pp.a
archive, and imports it as both "p" and "pp". This is a misuse of
cmd/compile's -p flag, and it isn't representative of how any actual
Go build systems work anyway.
This test made sense back when cmd/compile still wrote out bare object
files, which was then split into separate __.PKGDEF and _go_.o archive
entries when added to a pack archive. But since CL 102236, cmd/compile
always writes out pack files.
Updates #51734.
Change-Id: I4b5de22d348ecc0a72c98b512351c2d267c77736
Reviewed-on: https://go-review.googlesource.com/c/go/+/393896
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Currently, run.go's *dir tests allow "x.go" to be imported
interchangeably as either "x" or "./x". This is generally fine, but
can cause problems when "x" is the name of a standard library
package (e.g., "fixedbugs/bug345.dir/io.go").
This CL is an automated rewrite to change all `import "x"` directives
to use `import "./x"` instead. It has no effect today, but will allow
subsequent CLs to update test/run.go to resolve "./x" to "test/x" to
avoid stdlib collisions.
Change-Id: Ic76cd7140e83b47e764f8a499e59936be2b3c876
Reviewed-on: https://go-review.googlesource.com/c/go/+/395116
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This CL allow the CALL ops to take variable number of arguments.
Change-Id: If84bb306c2f23a0a934e31dfeabbca7bed0c1796
Reviewed-on: https://go-review.googlesource.com/c/go/+/360216
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After CL 394556, only LocalPkg is passed to AllowsGoVersion, so simplify
the code to not depend on Pkg anymore.
Change-Id: I8f9bfd4090100eec60cf3959c0d8fa92a26fc32a
Reviewed-on: https://go-review.googlesource.com/c/go/+/394954
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SetBroken is never called and Broken always returns false.
Updates #51691
Change-Id: I7e3fd3f2121268596d2e93a28c69e895bcf802ab
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anyBroke now always return false, we can get rid of it.
Updates #51691
Change-Id: Idab5bc9f9f222cc63e50bdde2b23b9404a4bd74e
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types2 handles those checks instead.
The only exception is noder.checkEmbed, since when types2
have not known about "//go:embed" pragma yet.
Updates #51691
Change-Id: I74ded03536023fe838f23fa7421e04513f904f66
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CL 388535 removed the only usage of this function.
Change-Id: Ie5a61cce75b03d83162f62989fe52388b069c9bc
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And use base.Fatalf in code that use n.SetDiag(true) instead.
Updates #51691
Change-Id: Ib3c0b9c89b8d95717391cbe7d424240e288ada1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/394575
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And use base.Fatalf in code that use t.SetBroke(true) instead.
Updates #51691
Change-Id: I9f3613379dd82d0dd069cdf7b61cbb281810e2e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/394574
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reportTypeLoop used to be used to report invalid recursive types in old
typechecker.
However, types2 now reports this error, so this can be removed.
Updates #51691
Change-Id: I5e73369dadafb0cc56e682668b32cbd1e1210f2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/394554
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This change essentially matches the 1.17 compiler error message for
this error.
Fixes#51877.
Change-Id: I24ec2f9cc93d8cd2283d097332a39bc1a0eed3a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/394914
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Reviewed-by: Robert Findley <rfindley@google.com>
The code iterates through the func table to find a function with
a given file and line number. The code panics if it sees a non-
real function (e.g. go.buildid), because its CU offset is -1,
which causes an index-out-of-bounds error. The debug/gosym package
recovers the panic and returns "not found", without looping
through the rest of the entries.
Skip the non-real functions. They cannot be looked up by line
number anyway.
Fixes#51890.
Change-Id: I96f64c17b4a53ffdce047c8244b35a402a0d39ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/395074
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For a non-generic defined type, we generate its type descriptor
symbol only in the defining package. So there is no duplicate and
it doesn't need to be dupok.
For unnamed types and instantiated types, the type descriptor can
be generated in multiple packages and so still need to be dupok.
Change-Id: I92ed68c998ad68c5917b77b1dfd62eac4ced6bcf
Reviewed-on: https://go-review.googlesource.com/c/go/+/394636
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With the previous CL the compiler emits an unlinkable object if
the -p flag is not specified. It is actually okay (and convenient)
to omit the -p flag for (just) the main package. This CL makes it
so.
Change-Id: I978d54d14c45b3bb9ed7471e40a2c47f269b56f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/394834
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The importer type param index used package name type parameter key,
causing type parameters to be reused/overwritten if two packages in the
import graph had the same combination of (name, declaration name, type
parameter name).
Fix this by instead using the *Package in the key.
Fixes#51836
Change-Id: I881ceaf3cf7c1ab4e0835962350feb552e79b233
Reviewed-on: https://go-review.googlesource.com/c/go/+/394219
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Restructure TestCPUProfileMultithreadMagnitude so it will run again with
a longer duration on failure. Log the split between the user vs system
CPU time that rusage reports.
For #50232
Change-Id: Ice5b38ee7594dbee1eaa5686d32b968c306e3e85
Reviewed-on: https://go-review.googlesource.com/c/go/+/393934
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For unlinkable object the link will fail, but it opens the output
file in writable mode first then delete it on failure. This fails
if the current directory is not writable. Write to the temporary
directory instead.
Change-Id: Iefd73b5cc8efdc0f11b12edc0920169a8ad3f37c
Reviewed-on: https://go-review.googlesource.com/c/go/+/394755
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The glibc loader explicitly sets the first doubleword on the stack (R1)
to $0 to indicate it was dynamically loaded.
An ELFv2 ABI compliant loader will set R3/R4 to argc/argv when starting
the process, and R13 to TLS. musl is not compliant. Instead it passes
argc/argv like the kernel, but R3/R4 are in an undefined state and R13
is valid.
With the knowledge above, the startup code can be modified to
dynamically handle all three cases when linked internally.
Fixes#51787
Change-Id: I5de33862c161900d9161817388bbc13a65fdc69c
Reviewed-on: https://go-review.googlesource.com/c/go/+/394654
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The TPIDR macro in tls_arm64.h is not used anywhere, so remove it
to reduce confusion.
Change-Id: I04aa5e64ee30753f28f43bc67b44559d81d093c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/373357
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Symbol's content hash used to depend on package path expansion in
symbol names, so we have special logic handling hashed symbols
when path expansion is needed. As we required -p in the compiler
the symbol names are now fully expanded. Remove that logic.
Change-Id: I888574f63ea3789455d96468a6abd500e0958230
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CL 391014 requires the compiler to be invoked with the -p flag, to
specify the package path. People are used to run "go tool compile"
from the command line with the -p flag. This is mostly for simple
testing, or debugging the compiler. The produced object file is
almost never intended to be linked.
This CL makes the compiler allow "go tool compile" without the -p
flag again. It will produce an unlinkable object. If the linker
sees such an object it will error out.
Change-Id: I7bdb162c3cad61dadd5c456d903b92493a3df20f
Reviewed-on: https://go-review.googlesource.com/c/go/+/394217
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
This makes the short link discoverable.
Change-Id: I9a2f091652bc096feebbbd79a854aa68efe702bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/394634
Trust: Austin Clements <austin@google.com>
Reviewed-by: Eli Bendersky <eliben@golang.org>
ParseMultipartForm relies on a valid multipartReader, if the request body is nil,
the multipartReader should return an error. This way ParseMultipartForm can return
an error instead of causing mr.ReadForm(maxMemory) to panic
Fixes#48206
Change-Id: Ief906f2340c7ab29cacbd5f56892117202a0b911
Reviewed-on: https://go-review.googlesource.com/c/go/+/384454
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
For #46279
For #51713
Change-Id: I444f309999bf5576449a46a9808b23cf6537e7dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/394094
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Joel Sing <joel@sing.id.au>
Same information is provided from the fields of the embedded
goobj.Reader, and are accessed through it. Delete the flags field.
Change-Id: I7a4f5dca054e567443d719b2931fceff231d6efc
Reviewed-on: https://go-review.googlesource.com/c/go/+/394216
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Also change the relevant test to be tested on the linux-arm64 platform
as well.
Fixes#49789
Change-Id: Id2eac7a45279f037957442862f8ed63838b8e929
Reviewed-on: https://go-review.googlesource.com/c/go/+/366855
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
