Commit Graph

41687 Commits

Author SHA1 Message Date
Joel Sing 6a760d6c36 runtime: include pthread.h in defs_openbsd.go
This is required now that defs_openbsd.go has pthread related references.

Updates #36435

Change-Id: I73cdf23eef6aceea6f9b37b7702bdb3b560aa120
Reviewed-on: https://go-review.googlesource.com/c/go/+/334877
Trust: Joel Sing <joel@sing.id.au>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-16 07:41:07 +00:00
Tobias Klauser 7aa57a9687 runtime: remove unused getrlimit on linux/riscv64
Follow CL 94775 and CL 93655 which removed the (commented-out) usage
of this function on other platforms.

Change-Id: I28e0569d8531d0c09f3caefa7c4eb54fb5bd8a33
Reviewed-on: https://go-review.googlesource.com/c/go/+/334429
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>
2021-08-16 07:22:02 +00:00
Brad Fitzpatrick 57c115e1f6 crypto/sha{256,512}: unname result parameters for consistency
Sum224 and Sum256 didn't look the same at:

    https://golang.org/pkg/crypto/sha256/

Now they match. Likewise with sha512's funcs.

Per:
https://github.com/golang/go/wiki/CodeReviewComments#named-result-parameters

Change-Id: I6b88c8ef15141c78a6cddeb0960b3ad52db34244
Reviewed-on: https://go-review.googlesource.com/c/go/+/322329
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Katie Hockman <katie@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-08-16 03:24:20 +00:00
Robert Griesemer 717894cf80 cmd/compile/internal/types2: better error message for index syntax error (follow-up)
For #47704.

Change-Id: I09e6f638df0cd456a20a3b68ab55c47bb5b1f555
Reviewed-on: https://go-review.googlesource.com/c/go/+/342370
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-15 19:56:18 +00:00
Robert Griesemer 6ed9463133 cmd/compile/internal/syntax: better error message for index syntax error
Fixes #47704.

Change-Id: I1de9fd00baaa4b534c23f011ade54120f5153a9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/342369
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-15 19:08:56 +00:00
Ian Lance Taylor 1162aae0ad time/tzdata: update links in comment
Change-Id: I141d29bb4adc957de5de1f8ed8867980fd3c8386
Reviewed-on: https://go-review.googlesource.com/c/go/+/342071
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
2021-08-15 00:19:34 +00:00
Robert Findley ff3469b1c2 cmd/dist: remove tests using the typeparams build tag
This stanza is no longer necessary now that the typeparams build tag is
not used.

Change-Id: I7bcc4a01e354e5130d50b00895a5b96c25c71502
Reviewed-on: https://go-review.googlesource.com/c/go/+/342153
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 22:44:35 +00:00
Jeff Wentworth 0a0a160d4d sync/atomic: fix documentation for CompareAndSwap
Fixes #47699

The documentation for CompareAndSwap atomic/value incorrectly labelled the function as CompareAndSwapPointer. This PR fixes that.

Change-Id: I6db08fdfe166570b775248fd24550f5d28e3434e
GitHub-Last-Rev: 41f7870792
GitHub-Pull-Request: golang/go#47700
Reviewed-on: https://go-review.googlesource.com/c/go/+/342210
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Trust: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-14 16:56:14 +00:00
Robert Findley 49c688e45c cmd/compile/internal/types2: rename TypeParams to TParamList
The 'TypeParams' name is too easily confused with the singular
'TypeParam', and does not say anything about what type of collection it
is. We decided that TTuple was not great. TParamList seems OK for now,
though perhaps a better name will emerge.

Change-Id: I5eabdc91b1f666bb4c7ea8acdbebf7c372d19227
Reviewed-on: https://go-review.googlesource.com/c/go/+/341861
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:15:20 +00:00
Robert Findley b2253c8041 cmd/compile/internal/types2: remove targs from substMap
Now that we always capture targs when constructing an instance, we no
longer need to pass them via the substMap. This simplifies the code and
resolves a TODO.

Change-Id: I592dccaeb89c7cc31ac037d919137bb762820365
Reviewed-on: https://go-review.googlesource.com/c/go/+/341859
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:15:06 +00:00
Rob Findley 456759b246 cmd/compile/internal/types2: use the orig object for Named.Obj
Exposing a synthetic type name for instantiated types is problematic:
there is no way to ensure that type instances are first created in the
same type checking pass, and therefore no guarantee that their
instantiation positions are the same. Even type checking a given package
with different file ordering could result in different positions being
associated with type instances. This is therefore an implementation
detail that we should not expose.

Keep the synthetic type name for accurate error reporting, but hide it
in the API.

Change-Id: I61f0e3ed322e97b157eb1ca316480f5719dcc174
Reviewed-on: https://go-review.googlesource.com/c/go/+/341858
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:14:57 +00:00
Rob Findley 2d250043b4 cmd/compile/internal/types2: simplify Named.under
Remove some unnecessary logic from Named.under:
 - no need to have special handling for Typ[Invalid]: this is the same
   as other cases where the underlying type is resolved.
 - use Underlying() to get the loaded and expanded underlying
 - no need for special handling of the first iteration

Change-Id: I2029711f51fa9eaaee11debadd55974a1376a980
Reviewed-on: https://go-review.googlesource.com/c/go/+/341857
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:14:49 +00:00
Rob Findley 50f4ebbdd3 cmd/compile/internal/types2: define Identical for instances
Instantiation of parameterized types may occur in other packages, so we
need an intrinsic notion of type identity for instances.

Add the natural definition: two instances are identical if their bases
and type arguments are identical.

Type unification was already considering type arguments, but has some
inaccurate logic with respect to objects. This will be addressed in a
follow-up CL.

Change-Id: Ib2ce67c05de65eb302ee588cc40c89c60018da50
Reviewed-on: https://go-review.googlesource.com/c/go/+/341856
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:14:43 +00:00
Rob Findley fc27eb50ff cmd/compile/internal/types2: merge Instantiate and InstantiateLazy
Instantiate and InstantiateLazy have the same signature; on first
principles, if Instantiate should work for importers it should be
possible to consolidate these APIs.

This CL does this. In order to make it work, a typMap needs to be
threaded through type expansion to prevent infinite recursion in the
case that the Checker is nil.

Notably, Named types now must be expanded before returning from
Underlying(). This makes Underlying generally unsafe to call while type
checking a package, so a helper function safeUnderlying is added to
provide the previous behavior. This is probably overly conservative at
most call sites, but cleanup is deferred to a later CL.

Change-Id: I03cfb75bea0750862cd6eea4e3cdc875a7daa989
Reviewed-on: https://go-review.googlesource.com/c/go/+/341855
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-14 15:14:35 +00:00
hitzhangjie 7eaabae84d net: update IP.String doc to reflect RFC 5952 conformance
Fixes #44485

Change-Id: I1b1bf14245ef738342ec881ac4c99adbfc9c5b7d
GitHub-Last-Rev: ae0242c6d6
GitHub-Pull-Request: golang/go#47394
Reviewed-on: https://go-review.googlesource.com/c/go/+/337409
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2021-08-13 21:53:07 +00:00
korzhao 58490972c0 cmd/link: fix dead reference link
Change-Id: I0f53cc2b845f8a52fece2aaba1445a0ecb9cdc53
Reviewed-on: https://go-review.googlesource.com/c/go/+/341129
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-08-13 21:47:42 +00:00
Ian Lance Taylor 2eb4d68833 runtime: don't use systemstack for BeforeFork/AfterFork
In https://golang.org/cl/140930043 syscall.BeforeFork was changed to
call beforefork via onM. This was done because at the time BeforeFork
was written in C but was called from Go. While the runtime was being
converted to Go, calls to complex C functions used onM to ensure that
enough stack space was available.

In https://golang.org/cl/172260043 the syscall.BeforeFork and
beforefork functions were rewritten into Go. In this rewrite
syscall.BeforeFork continue to call beforefork via onM, although
because both functions were now in Go that was no longer necessary.

In https://golang.org/cl/174950043 onM was renamed to systemstack,
producing essentially the code we have today.

Therefore, the use of systemstack in syscall.BeforeFork (and
syscall.AfterFork) is a historical relic.  Remove it.

Change-Id: Ia570f556b20e8405afa6c5e707bd6f4ad18fd7ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/341335
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-13 20:50:48 +00:00
Dmitri Shuralyov 98f3d7fecb all: gofmt more (but vendor, testdata, and top-level test directories)
CL 294430 made packages in std and cmd modules use Go 1.17 gofmt format,
adding //go:build lines. This change applies the same formatting to some
more packages that 'go fmt' missed (e.g., syscall/js, runtime/msan), and
everything else that is easy and safe to modify in bulk.

Consider the top-level test directory, testdata, and vendor directories
out of scope, since there are many files that don't follow strict gofmt
formatting, often for intentional and legitimate reasons (testing gofmt
itself, invalid Go programs that shouldn't crash the compiler, etc.).

That makes it easy and safe to gofmt -w the .go files that are found
with gofmt -l with aforementioned directories filtered out:

	$ gofmt -l . 2>/dev/null | \
		grep -v '^test/' | \
		grep -v '/testdata/' | \
		grep -v '/vendor/' | wc -l
	      51

None of the 51 files are generated. After this change, the same command
prints 0.

For #41184.

Change-Id: Ia96ee2a0f998d6a167d4473bcad17ad09bc1d86e
Reviewed-on: https://go-review.googlesource.com/c/go/+/341009
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-08-13 20:45:17 +00:00
Michael Pratt 20a620fd9f runtime: drop SIGPROF while in ARM < 7 kernel helpers
On Linux ARMv6 and below runtime/internal/atomic.Cas calls into a kernel
cas helper at a fixed address. If a SIGPROF arrives while executing the
kernel helper, the sigprof lostAtomic logic will miss that we are
potentially in the spinlock critical section, which could cause
a deadlock when using atomics later in sigprof.

Fixes #47505

Change-Id: If8ba0d0fc47e45d4e6c68eca98fac4c6ed4e43c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/341889
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-13 14:00:23 +00:00
Jay Conrod 4c8ffb3baa cmd/internal/str: move package from cmd/go/internal/str
This will let cmd/cgo and cmd/link use this package for argument parsing.

For golang/go#41400

Change-Id: I12ee21151bf3f00f3e8d427faaaab2453c823117
Reviewed-on: https://go-review.googlesource.com/c/go/+/334730
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/341934
Run-TryBot: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-08-13 00:20:28 +00:00
Jay Conrod 4be75faa3e cmd/go: make fewer 'go mod' commands update go.mod
'go mod graph', 'go mod vendor', 'go mod verify', and 'go mod why'
will no longer edit go.mod or go.sum.

'go mod graph', 'go mod verify', and 'go mod why' may still fetch
files and look up packages as if they were able to update
go.mod. They're useful for debugging and should still work when go.mod
is a little broken.

This is implemented in modload.setDefaultBuildMod based on command
name for now. Super gross. Sorry. This should be fixed with a larger
refactoring for #40775.

Fixes golang/go#45551

Change-Id: If5f225937180d32e9a5dd252c78d988042bbdedf
Reviewed-on: https://go-review.googlesource.com/c/go/+/336151
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/341933
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-08-13 00:19:50 +00:00
Jay Conrod 1fffeddfe9 cmd/go: add -testsum flag to update go.sum in script tests
-testsum may be set to "tidy", "listm", or "listall". When set,
TestScript runs 'go mod tidy', 'go list -m -mod=mod all', or
'go list -mod=mod all' at the beginning of each test that has a go.mod
file in its root directory. If the test passes and go.mod or go.sum
was updated, TestScript will rewrite the test file with the initial
content of go.mod and go.sum (after the above command).

This is useful for writing tests that need a working go.sum and for
fixing tests that rely on -mod=mod.

For golang/go#41302

Change-Id: I63a5667621a5082ccedfc1bff33c3969c29e8b3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/336150
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-on: https://go-review.googlesource.com/c/go/+/341932
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-08-13 00:12:29 +00:00
Gerrit Code Review 0d01934094 Merge "all: REVERSE MERGE dev.typeparams (4d3cc84) into master" 2021-08-12 21:33:09 +00:00
Russ Cox 044ec4fa98 time: fix docs for new comma layouts
The current text is slightly inaccurate. Make it more correct.

Change-Id: Iebe0051b74649d13982d7eefe3697f9e69c9b75d
Reviewed-on: https://go-review.googlesource.com/c/go/+/340449
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-12 21:29:44 +00:00
Gerrit Code Review 4d3cc84774 Merge "[dev.typeparams] all: merge master (46fd547) into dev.typeparams" into dev.typeparams 2021-08-12 20:22:27 +00:00
Matthew Dempsky a64ab8d3ec [dev.typeparams] all: merge master (46fd547) into dev.typeparams
Conflicts:

- src/go/types/check_test.go

  CL 324730 on dev.typeparams changed the directory paths in TestCheck,
  TestExamples, and TestFixedbugs and renamed checkFiles to testFiles;
  whereas CL 337529 on master added a new test case just above them and
  that used checkFiles.

Merge List:

+ 2021-08-12 46fd547d89 internal/goversion: update Version to 1.18
+ 2021-08-12 5805efc78e doc/go1.17: remove draft notice
+ 2021-08-12 39634e7dae CONTRIBUTORS: update for the Go 1.17 release
+ 2021-08-12 095bb790e1 os/exec: re-enable LookPathTest/16
+ 2021-08-11 dea23e9ca8 src/make.*: make --no-clean flag a no-op that prints a warning
+ 2021-08-11 d4c0ed26ac doc/go1.17: linker passes -I to extld as -Wl,--dynamic-linker
+ 2021-08-10 1f9c9d8530 doc: use "high address/low address" instead of "top/bottom"
+ 2021-08-09 f1dce319ff cmd/go: with -mod=vendor, don't panic if there are duplicate requirements
+ 2021-08-09 7aeaad5c86 runtime/cgo: when using msan explicitly unpoison cgoCallers
+ 2021-08-08 507cc341ec doc: add example for conversion from slice expressions to array ptr
+ 2021-08-07 891547e2d4 doc/go1.17: fix a typo introduced in CL 335135
+ 2021-08-06 8eaf4d16bc make.bash: do not overwrite GO_LDSO if already set
+ 2021-08-06 63b968f4f8 doc/go1.17: clarify Modules changes
+ 2021-08-06 70546f6404 runtime: allow arm64 SEH to be called if illegal instruction
+ 2021-08-05 fd45e267c2 runtime: warn that KeepAlive is not an unsafe.Pointer workaround
+ 2021-08-04 6e738868a7 net/http: speed up and deflake TestCancelRequestWhenSharingConnection
+ 2021-08-02 8a7ee4c51e io/fs: don't use absolute path in DirEntry.Name doc
+ 2021-07-31 b8ca6e59ed all: gofmt
+ 2021-07-30 b7a85e0003 net/http/httputil: close incoming ReverseProxy request body
+ 2021-07-29 70fd4e47d7 runtime: avoid possible preemption when returning from Go to C
+ 2021-07-28 9eee0ed439 cmd/go: fix go.mod file name printed in error messages for replacements
+ 2021-07-28 b39e0f461c runtime: don't crash on nil pointers in checkptrAlignment
+ 2021-07-27 7cd10c1149 cmd/go: use .mod instead of .zip to determine if version has go.mod file
+ 2021-07-27 c8cf0f74e4 cmd/go: add missing flag in UsageLine
+ 2021-07-27 7ba8e796c9 testing: clarify T.Name returns a distinct name of the running test
+ 2021-07-27 33ff155970 go/types: preserve untyped constants on the RHS of a shift expression
+ 2021-07-26 840e583ff3 runtime: correct variable name in comment
+ 2021-07-26 bfbb288574 runtime: remove adjustTimers counter
+ 2021-07-26 9c81fd53b3 cmd/vet: add missing copyright header

Change-Id: Ia80604d24c6f4205265683024e3100769cf32065
2021-08-12 12:43:12 -07:00
Dan Scales 7e9f911ec4 [dev.typeparams] cmd/compile: remove some shape checks in type substituter, other cleanups
The type substituter (typecheck.Typ()) was temporarily substituting from
shapes back to concrete types, but doesn't need to anymore. So, remove
two shape checks, so the type substituter is now only for substituting
type params again.

Several other cleanups:

 - renamed makeGenericName() to makeInstName1(), since that function is
   a helper to MakeInstName() and MakeDictName() that definitely makes
   instantiated names, not generic names.

 - removed the logic in makeInstName1() that adds the ".inst." prefix
   for concrete type args. We are only specifying concrete type args (as
   opposed to shape args) when we are calling from MakeDictName, and
   then we immediately strip of the .inst prefix anyway.

 - Added a comment on types.Identical that a shape type is considered
   identicall to another type if their underlying types are the same, or
   they are both pointers.

Change-Id: I3e0206dbd403897797ae7bec3c527ae16b0b930a
Reviewed-on: https://go-review.googlesource.com/c/go/+/341729
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-08-12 19:32:30 +00:00
Carlos Amedee 46fd547d89 internal/goversion: update Version to 1.18
This is the start of the Go 1.18 development cycle, so update the
Version value accordingly. It represents the Go 1.x version that
will soon open up for development (and eventually become released).

Updates #40705
Updates #47351

Change-Id: Icfb99e28529a3c9fb7394e114a34586f613dfcbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/341590
Trust: Carlos Amedee <carlos@golang.org>
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Alexander Rakoczy <alex@golang.org>
2021-08-12 19:06:51 +00:00
Dmitri Shuralyov 095bb790e1 os/exec: re-enable LookPathTest/16
This failure was confirmed to be due to a bug in prerelease versions
of Windows, and has been fixed by now. Remove the skip for this test.

Fixes #44379.

Change-Id: Idfb92ffd6b9d416d4c78ef3800a5ffdda06c6562
Reviewed-on: https://go-review.googlesource.com/c/go/+/341455
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-12 15:58:41 +00:00
zikaeroh 677dfe5ad6 [dev.typeparams] cmd/compile: don't print out node pointer in ir.Dump
This has been a part of the node dumping since the very beginning, but
this makes diffing -W output pretty annoying. -d=dumpptrs already prints
these out if needed.

Change-Id: I9524a7f7b44ec780ae42a8a2a9588f11ab3950f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/340253
Reviewed-by: Dan Scales <danscales@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-08-12 01:33:11 +00:00
Matthew Dempsky dea23e9ca8 src/make.*: make --no-clean flag a no-op that prints a warning
This flag is undocumented and is no longer useful. Users who want to
install additional toolchains without cleaning the installed packages
should just use `go install`.

This CL changes cmd/dist to print a warning that --no-clean is
deprecated and to advise users to use `go install std cmd` instead,
and then otherwise ignores it:

```
$ ./make.bash --no-clean
Building Go cmd/dist using $GOROOT_BOOTSTRAP. (devel +b7a85e0003 linux/amd64)
warning: --no-clean is deprecated and has no effect; use 'go install std cmd' instead
Building Go toolchain1 using $GOROOT_BOOTSTRAP.
```

Fixes #47204.

Change-Id: I275031832098401a49e491e324e8de3427973630
Reviewed-on: https://go-review.googlesource.com/c/go/+/341392
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-08-11 22:07:50 +00:00
Dan Scales 8ab59d812a [dev.typeparams] cmd/compile: change export version to 1.17 for testing
This is a temporary change. We will revert this back before the 1.18
release. We make this change now to simplify testing, since a lot of
tools will break on the new export version.

Updates #47654.

Change-Id: I0650fa753bb11229c71254d779dd61b5c1af9cdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/341211
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-08-11 19:48:50 +00:00
Cherry Mui d7d4f28a06 [dev.typeparams] runtime, internal/bytealg: remove regabi fallback code on AMD64
As we commit to always enabling register ABI on AMD64, remove the
fallback code.

Change-Id: I30556858ba4bac367495fa94f6a8682ecd771196
Reviewed-on: https://go-review.googlesource.com/c/go/+/341152
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-11 17:08:54 +00:00
Cherry Mui eeb7899137 [dev.typeparams] internal/buildcfg: always enable regabi on AMD64
In Go 1.17 we added register ABI on AMD64 on Linux/macOS/Windows
as a GOEXPERIMENT, on by default. In Go 1.18, we commit to always
enabling register ABI on AMD64.

Now "go build" for AMD64 always have goexperiment.regabi* tags
set. However, at bootstrapping cmd/dist does not set the tags
when building go_bootstrap. For this to work, unfortunately, we
need to hard-code AMD64 to use register ABI in runtime code.

Change-Id: I0b31e678e186b9cdeeb8502cd9e38ed0d7e72d4f
Reviewed-on: https://go-review.googlesource.com/c/go/+/341151
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-11 16:59:43 +00:00
Robert Griesemer 0888a8cd2d [dev.typeparams] cmd/compile/internal/types2: remove unused TypeParam.Bound method
Use TypeParam.Constraint instead.

Change-Id: Iebd77d304f2b7238baa231fb9869c964f66ea355
Reviewed-on: https://go-review.googlesource.com/c/go/+/340990
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-11 06:15:15 +00:00
Rob Findley 7308d747e7 [dev.typeparams] cmd/compile/internal/types2: remove Named.SetTArgs
Calling SetTArgs without substituting can leave the type in incoherent
state, so we should avoid exposing this API unless necessary. Since it
is currently not used by the importer(s), it is probably not necessary
to expose for 1.18, so remove it.

Change-Id: I06bd7b5bbfacd3c65e2e66a9d5980f20cd1c10c1
Reviewed-on: https://go-review.googlesource.com/c/go/+/341290
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-10 21:52:02 +00:00
Rob Findley 0f34a92df7 [dev.typeparams] go/types: don't expose the TypeSet API for 1.18
The TypeSet API is very new and probably not necessary to expose outside
of go/types, at least for 1.18. Users can check whether a type is
contained within a type set via Implements, and can access the
representation of the type set via the embedded Unions.

Change-Id: Icc7355285785bee5aa7a8fe74052bcb0fedcd0a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/341289
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-08-10 21:49:07 +00:00
Dan Scales 40ba119e3f [dev.typeparams] cmd/compile: keep export format unchanged if no type params are exported
Added new export tags 'G' and 'U' to export parameterized
functions/methods and parameterized types respectively. This has the
advantage that the Go 1.18 format remains backward-compatible with the
Go 1.17 format if no type parameters are exported.

Change-Id: I9dba8faaa65609eb3f9c693bd0c79daee98bd865
Reviewed-on: https://go-review.googlesource.com/c/go/+/340989
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-08-10 19:48:58 +00:00
Cherry Mui fb8579746c [dev.typeparams] internal/goexperiment: update comment for RegabiArgs requirements
RegabiG and regabiDefer have been always enabled and removed from
experiments. Update the comment.

Change-Id: Ieaf4b4f0a7e0e9d6733a18932ca457be4f150d08
Reviewed-on: https://go-review.googlesource.com/c/go/+/341150
Trust: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-08-10 16:07:59 +00:00
Cherry Mui 2e250cc957 [dev.typeparams] cmd: update vendored golang.org/x/tools to 337cebd2c1
Update vendored golang.org/x/tools repo to pick up CL 339250 for
assembly function check for register ABI.

This is done with

	cd GOROOT/cmd
	go get golang.org/x/tools@master
	go mod tidy
	go mod vendor

Update cmd/vet tests as the error ouput changes in CL 301949.
The error message now includes full package-qualified name.

Change-Id: I52dc7223aee9e011214254488bacf02dc5b4c2ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/341149
Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-08-10 16:07:37 +00:00
Keith Randall 2fbf6aafe7 [dev.typeparams] cmd/compile: handle interface type parameters in type switches
Change-Id: I9bba21a64d7e9f42395b6fcdf8aa3ca01cf131dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/340912
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2021-08-10 01:56:50 +00:00
Robert Griesemer e4cfa2f6da [dev.typeparams] cmd/compile/internal/types2: parameterized functions must have a body
Add the respective check and add missing bodies to tests.
Use {} as body for functions that don't return a result.
Use { panic(0) } as body for functions that return a result.

For #47069.

Change-Id: Ia5d7525c9c036baf8a955d13bff448401e08235e
Reviewed-on: https://go-review.googlesource.com/c/go/+/340911
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-10 01:20:34 +00:00
Robert Griesemer 508624f359 [dev.typeparams] cmd/compile/internal/types2: expand is only required for *Named types
Now that the pointer identity for a *Named type doesn't change
anymore when going from lazy instantiated to actually instantiated
(= expanded) state, expand() only needs to be called when we deal
with *Named types and only if we care about a *Named type's internals.

Remove the expand function and respective calls for all types and
replace with specific t.expand() method calls where t is a *Named.

Change-Id: If82299360d60108b00adc4013b29399aec90b940
Reviewed-on: https://go-review.googlesource.com/c/go/+/340749
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-08-10 01:20:32 +00:00
fanzha02 1f9c9d8530 doc: use "high address/low address" instead of "top/bottom"
The current document uses the "top" and "bottom" when talking
about the address within a frame, which may easily lead to
misunderstandings. This patch directly uses "high address"
and "low address" to make the expression clearer.

Change-Id: I7469330bbdc158672d7f0314fe6680ebdd9ab79a
Reviewed-on: https://go-review.googlesource.com/c/go/+/339369
Trust: fannie zhang <Fannie.Zhang@arm.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-10 01:13:06 +00:00
Dan Scales f5f79c47f9 [dev.typeparams] cmd/compile: use types2.Constraint() rather than types2.Bound()
types2.Constraint() returns the top-level constraint type, including any
unions or other interface elements. Because of that, we needed to
add/fix some code in the type substituter and generic type instantiater
in the importer to deal with unions and non-method members of an
interface. Also, NewUnion was not correctly setting the HasTParam flag.

I also added a better error message when a symbol is not found in
(*deadcodePass).decodeIfaceMethod().

Change-Id: Id3668dc596dce63690fa05a9e5e42295b5e2bbb5
Reviewed-on: https://go-review.googlesource.com/c/go/+/340670
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2021-08-09 20:08:06 +00:00
Jay Conrod f1dce319ff cmd/go: with -mod=vendor, don't panic if there are duplicate requirements
In loadModFile with -mod=vendor, load the vendor list and use it to
initialize the module graph before calling updateRoots.

In updateLazyRoots with any mode other than "mod", return the original
*Requirements if no roots needed to be upgraded, even if there are
inconsistencies. This means 'go list -m -mod=readonly' and -mod=vendor
may succeed if there are duplicate requirements or requirements on
versions of the main module.

Fixes #47565

Change-Id: I4640dffc4a7359367cc910da0d29e3538bfd1ca4
Reviewed-on: https://go-review.googlesource.com/c/go/+/340252
Trust: Jay Conrod <jayconrod@google.com>
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-08-09 20:06:35 +00:00
Dan Scales 9f4d6a8359 [dev.typeparams] cmd/compile: call transformArgs before early typecheckaste in noder
In the cases where we do an early call to typecheckaste() in noder to
expose CONVIFACE nodes, we need a preceding call to transformArgs().
This is needed to allow typecheckaste() to run correctly, in the case of
f(g()), where g has multiple return values.

I also cleaned up the code a bit and commented the code in Call(), and
we do the call to typecheckaste() in several more cases.

In stencil.go:stencil(), I moved the transformCall earlier for the
OCALLMETH/ODOTMETH case, just as I did in my previous CL for
OCALL/OFUNCINST. By doing this, transformArgs no longer needs to deal
with the extra dictionary args. Therefore, I was able to simply
transformArgs() to look like typecheckargs() again, and make use of
RewriteMultiValue directly.

Updates #47514

Change-Id: I49eb82ac05707e50c2e2fb03e39458a70491d406
Reviewed-on: https://go-review.googlesource.com/c/go/+/340531
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2021-08-09 19:43:09 +00:00
Keith Randall ca3c6985cd [dev.typeparams] cmd/compile: implement generic type switches
Add a new dynamicType node, which is used as a case entry when
the type being switched to is generic.

Change-Id: Ice77c6f224b8fdd3ff574fdf4a8ea5f6c7ddbe75
Reviewed-on: https://go-review.googlesource.com/c/go/+/339429
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2021-08-09 18:41:45 +00:00
Keith Randall 57668b84ff [dev.typeparams] cmd/compile: simplify interface conversions
Simplify the implementation of interface conversions in the compiler.
Don't pass fields that aren't needed (the data word, usually) to the runtime.

For generics, we need to put a dynamic type in an interface. The new
dataWord function is exactly what we need (the type word will come
from a dictionary).

Change-Id: Iade5de5c174854b65ad248f35c7893c603f7be3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/340029
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2021-08-09 16:10:20 +00:00
Ian Lance Taylor 7aeaad5c86 runtime/cgo: when using msan explicitly unpoison cgoCallers
This avoids an incorrect msan uninitialized memory report when using
runtime.SetCgoTraceback when a signal occurs while the fifth argument
register is undefined. See the issue for more details.

Fixes #47543

Change-Id: I3d1b673e2c93471ccdae0171a99b88b5a6062840
Reviewed-on: https://go-review.googlesource.com/c/go/+/339902
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-08-09 14:48:39 +00:00