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48919 Commits

Author SHA1 Message Date
Matthew Dempsky
5059aed9dd [dev.typeparams] internal/buildcfg: allow regabiwrappers on all GOARCH
There's nothing GOARCH-specific about ABI wrappers, so allow enabling
them on all architectures.

For unified IR, I want to have a testing mode where we add dictionary
parameters even to non-generic functions, as a way to help stress test
that they're handled correctly. This requires callers to know to
supply the appropriate dictionary arguments when calling them. Calls
generated by the Go compiler know to do this, but calls written in
assembly won't.

Reusing the regabi wrappers is a convenient choke-point for inserting
dictionary arguments for assembly calls.

Change-Id: Ic2c06b7626730289c5405829b61653d1daec430b
Reviewed-on: https://go-review.googlesource.com/c/go/+/333453
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-07-10 00:13:05 +00:00
Michael Anthony Knyszek
ab4085ce84 runtime/pprof: call runtime.GC twice in memory profile test
This change fixes #46500 by working around #45315 which may cause freed
objects to get missed in the heap profile published for the test.

By calling runtime.GC one more time this change ensures that all freed
objects are accounted for.

Fixes #46500.

Change-Id: Iedcd0b37dbaffa688b0ff8631a8b79f7a1169634
Reviewed-on: https://go-review.googlesource.com/c/go/+/333549
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-07-09 18:00:16 +00:00
Robert Griesemer
f2ed30c31e [dev.typeparams] cmd/compile/internal/types2: recursive substitution must terminate (bug fix)
When types2.Instantiate is called externally, no *Checker is provided and
substitution doesn't have access to Checker.typMap; and instantiation of
recursive generic types leads to an infinite recursion in subst.

There was a local subster.cache but it was only set and never used.
Replaced subster.cache with subster.typMap, which is set to the global
Checker.typMap if available, and set to a local map otherwise. This
prevents such infinite recursions. Added a simple test.

More generally, because we don't have a global type map for external
instantiations, instantiating the same type twice, independently but
with the same type arguments, will result in two different types. This
is not correct. We need to provide some form of context for external
instantiations (which means the importers). This is a separate but
related issue which is not yet addressed (filed #47103).

Change-Id: I541556c677db54f7396fd0c88c7467894dfcf2e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/333383
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>
2021-07-09 17:36:59 +00:00
Robert Griesemer
69d945fc6e [dev.typeparams] cmd/compile/internal/types2: use scope numbers to identify local types
Rather than using a local types' position information, use the type
name's scope numbers to uniquely identify the type from others with
the same name.

We use scope numbers rather than indices (with number-1 == index)
to preserve the invariant that the zero value for a scope is a ready
to use empty scope.

Using scope numbers turned out to be fairly simple after all and
provides a reasonably stable identification which will make debugging
simpler. A scope number series may be a bit longer than a unique ID for
each type name but local types should be reasonably rare.

Also did a minor cleanup in universe.go to ensure Named.orig is set up
correctly (there's still an open TODO but with a work-around).

Change-Id: I73935fa9bd960809fd5c95fe8b8a535c313cfc8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/333192
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>
2021-07-09 17:36:57 +00:00
Dan Scales
04acb8a7b9 [dev.typeparams] cmd/compile: report mismatch between types because of //go:notinheap
types2 currently ignores pragmas, so it does not catch a conversion
error when converting a pointer to a type which is NOT marked notinheap
to a pointer to a convertible type, but which is marked notinheap.

So, we specifically check for this error in transformConv() and report
it during noder2.

Change-Id: I6e9c9ee29f53fa5e490c1ac8306e2191db59eeb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/333369
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-07-09 16:14:34 +00:00
Matthew Dempsky
2b1d70a137 [dev.typeparams] all: merge master (296ddf2) into dev.typeparams
Conflicts:

- src/runtime/runtime2.go

  On master, CL 317191 fixed the mentions of gc/reflect.go in comments
  to reflectdata/reflect.go; but on dev.typeparams, CL 325921 fixed
  that the same comment to reflect that deferstruct actually ended up
  in ssagen/ssa.go.

Merge List:

+ 2021-07-08 296ddf2a93 net: filter bad names from Lookup functions instead of hard failing
+ 2021-07-08 ce76298ee7 Update oudated comment
+ 2021-07-08 2ca44fe221 doc/go1.17: linkify time.UnixMilli and time.UnixMicro
+ 2021-07-07 5c59e11f5e cmd/compile: remove special-casing of blank in types.sconv{,2}
+ 2021-07-07 b003a8b1ae cmd/compile: optimize types.sconv
+ 2021-07-07 11f5df2d67 cmd/compile: extract pkgqual from symfmt
+ 2021-07-07 991fd381d5 cmd/go: don't lock .mod and .sum files for read in overlay
+ 2021-07-07 186a3bb4b0 cmd/go/internal/modfetch/codehost: skip hg tests if no hg binary is present
+ 2021-07-07 00c00558e1 cmd/go/internal/modload: remove unused functions
+ 2021-07-07 f264879f74 cmd/go/internal/modload: fix an apparent typo in the AutoRoot comment
+ 2021-07-07 c96833e5ba doc: remove stale comment about arm64 port

Change-Id: I849046b6d8f7421f60323549f3f763ef418bf9e7
2021-07-08 13:11:32 -07:00
Matthew Dempsky
42fe132787 [dev.typeparams] cmd/compile: cleanup ABI utils tests
This CL cleans a few minor nits with the ABI utils tests that are now
necessary because of cleanups that happened on master:

1. Initialize types.LocalPkg; this needs to be set for selector names
to be handled correctly.

2. In TestABIUtilsInterfaces, switch to using an exported identifier,
so it doesn't need to be package qualified.

3. While here, change the method result type from "untyped string" to
just "string". Constants are the only declared object that can ever
have an untyped type.

Change-Id: Iabed46594361a516317a1c2d20c3d59bdb519844
Reviewed-on: https://go-review.googlesource.com/c/go/+/333189
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-07-08 19:50:12 +00:00
Dan Scales
d4f6d161e4 [dev.typeparams] cmd/compile: fix bunch of -G=3 bugs for test cases in test/typeparams/mdempsky
1.go, 12.go: similar to calculating type sizes, we delay computing
instantiations during import until we get up to a top-level type, in
order to make sure recursive types are complete. But we should always
delay calculating sizes when we delay instantiating types, since
otherwise we may try to calculate the size of an incomplete type. So,
needed to add Defer/ResumeCheckSize in (*importReader).typ where we also
defer instantiations. (iimport.go)

2.go: when doing type substition, we have to handle named, parameterized
basic types i.e. the type has a type parameter even though the
underlying type is a basic type that doesn't depend on the parameter.
(subr.go)

3.go: for go 1.18, we allow arbitrary types in interfaces. We had
already allowed union types and tilde types, but didn't allow regular
non-interface types in Go 1.17 for compatibility.  Just skip an error
in the case of 1.18. (size.go)

5.go: types2 and types1 differ in how they print out interfaces. types1
puts a space between "interface" and "{", types2 does not. So, since
some typenames come from types2 and some from types1, we need to remove
the space when printing out type arguments. (iimport.go/subr.go)

9.go: in subst.node(), we were missing the KeyExpr case where a node has
no type. The assertion is just there, to make sure we understand all the
cases where there is no type to translate. We could just remove the
whole error check. (stencil.go)

13.go: in subst.node(), missed handling the case where a method
expression is immediate called (which of course, is quite unusual, since
then there's no real reason to have used the method expression syntax in
that case). Just needed to add ir.OMETHEXPR in the OCALL switch
statement.  (stencil.go)

Change-Id: I202cbe9541dfafe740e3b84b44982d6181738ea0
Reviewed-on: https://go-review.googlesource.com/c/go/+/333165
Trust: Dan Scales <danscales@google.com>
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TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2021-07-08 18:45:25 +00:00
Roland Shoemaker
296ddf2a93 net: filter bad names from Lookup functions instead of hard failing
Instead of hard failing on a single bad record, filter the bad records
and return anything valid. This only applies to the methods which can
return multiple records, LookupMX, LookupNS, LookupSRV, and LookupAddr.

When bad results are filtered out, also return an error, indicating
that this filtering has happened.

Updates #46241
Fixes #46979

Change-Id: I6493e0002beaf89f5a9795333a93605abd30d171
Reviewed-on: https://go-review.googlesource.com/c/go/+/332549
Trust: Roland Shoemaker <roland@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
2021-07-08 17:53:43 +00:00
makdon
ce76298ee7 Update oudated comment
Update comment cause gc/select.go has been moved to walk/select.go and gc/reflect.go has been moved to reflectdata/reflect.go

Change-Id: I6894527e1e9dbca50ace92a51bf942f9495ce88c
GitHub-Last-Rev: 6d6a447144
GitHub-Pull-Request: golang/go#45976
Reviewed-on: https://go-review.googlesource.com/c/go/+/317191
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Michael Pratt <mpratt@google.com>
2021-07-08 16:59:21 +00:00
Tobias Klauser
2ca44fe221 doc/go1.17: linkify time.UnixMilli and time.UnixMicro
Change-Id: I8503c4649fc42670f13d981f98af480467d6a3e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/332829
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2021-07-08 09:09:53 +00:00
Robert Griesemer
18135150b0 [dev.typeparams] cmd/compile/internal/types2: don't permit method calls on ptr to type parameter receivers
Simplify the implementation of asInterface while at it.

For #47031.

Change-Id: Ie7d4fbbab898d961ed3c0b7772ba9604641be13f
Reviewed-on: https://go-review.googlesource.com/c/go/+/332609
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-07-07 23:42:29 +00:00
Robert Griesemer
d2bf94fb86 [dev.typeparams] cmd/compile/internal/types2: replace optype() with under() in various cases (cleanup)
This makes the behavior for type parameter operands explicit
in those cases.

Change-Id: I38438af67de4432f1a691dc4947e4576445f031b
Reviewed-on: https://go-review.googlesource.com/c/go/+/332555
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-07-07 23:42:19 +00:00
Robert Griesemer
03ec8de24b [dev.typeparams] cmd/compile/internal/types2: clean up index expr implementation for type parameters
This makes the implementation match the intended spec behavior:

Given an index expression a[x] where a is a type parameter, the
index expression is valid if the constraint for a satisfies the
following criteria:

- Either all types in the constraint type set are maps, or none
  of them are.

- If the (type set) types are maps, they must all have the same
  key type. (This may be too strict, perhaps it's sufficient to
  ensure assignability, but we can always relax that later.)

- All (type set) types must have the same element types.

- If there are any arrays, a constant index must be in range for
  the shortest array.

Change-Id: I8c094c11e6fc9496c293871ccf93e3814c881e6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/332553
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-07-07 23:42:12 +00:00
Robert Griesemer
47547d8508 [dev.typeparams] cmd/compile/internal/types2: disallow "free" type parameter as RHS of a type declaration
For #45639.

Change-Id: I20e331b04f464db81e916af75f70ec8ae73eb989
Reviewed-on: https://go-review.googlesource.com/c/go/+/332411
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-07-07 23:42:06 +00:00
Dan Scales
60cb2cab97 [dev.typeparams] cmd/compile: fix bug with types2.Instantiate with interface type param
types2.subst has an assertion that check is non-nil, but which breaks
Instantiate() with an interface type param (used when re-importing
instatiated type to types2). But this check was added when Instantiate()
was added, and things seem to work fine when the assertion is removed.

Fixes test/typeparam/mdempsky/7.go.

Change-Id: I4980f0b202a0b310a3c91a7a87f97576f54911de
Reviewed-on: https://go-review.googlesource.com/c/go/+/333155
Run-TryBot: Dan Scales <danscales@google.com>
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2021-07-07 22:57:23 +00:00
Dan Scales
85267f402c [dev.typeparams] cmd/compile: move def of comparable to end of predeclared slices
This avoids changing the export ABI.

Change-Id: I58950c1f4c21859d91d66d352b88e8c0972b5b8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/333164
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-07-07 22:56:36 +00:00
Matthew Dempsky
5c59e11f5e cmd/compile: remove special-casing of blank in types.sconv{,2}
I'm not sure why blank was special-cased here before, but it's
wrong. Blank is a non-exported identifier, and writing it out without
package-qualification can result in linker symbol collisions.

Fixes #47087.

Change-Id: Ie600037c8e54e3d4fdaeec21e2ca212badbd830b
Reviewed-on: https://go-review.googlesource.com/c/go/+/333163
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-07-07 22:29:01 +00:00
Matthew Dempsky
b003a8b1ae cmd/compile: optimize types.sconv
Now that symfmt is simpler, we can simply manually inline it into
sconv. Importantly, this allows us to avoid allocating a buffer +
writing a string + re-interning it when we don't need to qualify the
identifier.

Passes toolstash -cmp.

Updates #47087.

Change-Id: I47b57aef22301ba242556a645346f478f0c1a7d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/333162
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-07-07 22:28:19 +00:00
Matthew Dempsky
11f5df2d67 cmd/compile: extract pkgqual from symfmt
The logic in symfmt for deciding how to package-qualify an identifier
is easily refactored into a separate function, loosely similar to
go/types.Qualifier's API.

Passes toolstash -cmp.

Updates #47087.

Change-Id: Ib3e7cc35a6577dc28df8eca79ba3457c48168e86
Reviewed-on: https://go-review.googlesource.com/c/go/+/333161
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-07-07 22:27:48 +00:00
Jay Conrod
991fd381d5 cmd/go: don't lock .mod and .sum files for read in overlay
On Plan 9, locking a file requires a chmod call. In general, the go
command should not modify files in the overlay, even metadata. With
this change, we won't lock these files for reading.

The go command already reported errors when attempting to write these
files if they were in the overlay, but this change moves those checks
to the point of access for clearer error
messages. cmd/go/internal/lockedfile no longer imports
cmd/go/internal/fsys.

Fixes #44700

Change-Id: Ib544459dd6cf56ca0f7a27b3285f045f08040d7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/333012
Trust: Jay Conrod <jayconrod@google.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-07-07 21:57:42 +00:00
Bryan C. Mills
186a3bb4b0 cmd/go/internal/modfetch/codehost: skip hg tests if no hg binary is present
Change-Id: I5cf57bf1153eb662bcab71e3d2c04848212559a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/330989
Trust: Bryan C. Mills <bcmills@google.com>
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2021-07-07 20:33:11 +00:00
Bryan C. Mills
00c00558e1 cmd/go/internal/modload: remove unused functions
Also unexport functions that are not used outside the modload package.

Change-Id: I0de187cbb673cadafce95a27f5ccff934ae21104
Reviewed-on: https://go-review.googlesource.com/c/go/+/332570
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-07-07 20:26:23 +00:00
Bryan C. Mills
f264879f74 cmd/go/internal/modload: fix an apparent typo in the AutoRoot comment
Updates #40276

Change-Id: Ic192d51f9f0306e5c206c550ef02f6d4495d0851
Reviewed-on: https://go-review.googlesource.com/c/go/+/332569
Trust: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-07-07 20:25:29 +00:00
Matthew Dempsky
c65ca97a45 [dev.typeparams] cmd/compile: fix windows longtest builder
CL 332469 broke the Windows longtest builders, because it changed the
names assigned to autotmp variables that end up in export data.

The naming of autotmps doesn't actually matter, so instead we can just
hack iexport to write out "$autotmp" as a magic marker, and let the
reader replace it with an appropriate unique name. This is a little
hacky, but so is iexport's handling of autotmps already, and this
should also go away eventually with unified IR.

Change-Id: Ic17395337c745b66b9d63ee566299290214e6273
Reviewed-on: https://go-review.googlesource.com/c/go/+/333089
Trust: Matthew Dempsky <mdempsky@google.com>
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2021-07-07 18:12:43 +00:00
Dan Scales
501725032c [dev.typeparams] cmd/compile: handle derived types that are converted to interfaces
Up to this point, we were only handling typeparams that were converted
to empty or non-empty interfaces. But we have a dictionary entry for
each derived type (i.e. type derived from typeparams) as well. So, when
doing a conversion, look for the source type in both the type params and
derived types of the generic info, and then use the appropriate
dictionary entry.

Added some cases to ifaceconv.go (e.g. converting []T to an empty
interface).

Change-Id: I7bbad0128bec20ccccd93ae1d65c1ffd44ca79a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/333011
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2021-07-07 17:40:11 +00:00
Dan Scales
b614c05a15 [dev.typeparams] cmd/compile: add built-in name/type "comparable".
This allows exporting comparable type bounds, and importing back into
types2 for typechecking.

Fixes typeparam/mdempsky/8.go

Change-Id: I3ee12433df2ed68ac6ef4cad24be9fcdfaaca4e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/333129
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2021-07-07 17:34:16 +00:00
Dan Scales
b4844c9f54 [dev.typeparams] cmd/compile: handle the (*T).M method expression with dictionaries
The (*T).M method expression is where M is a value method, but the type
(*T) is a pointer to the main type. In this case, after following any
embedded fields, we need to add an extra star operator when using the
receiver arg in the closure call.

Thanks to Cuong for finding/pointing out an example for this case
(typeparam/mdempsky/14.go) This example also shows that we now need the
ability to export/import OEFACE and OIDATA, which I added.

Change-Id: Ida0f81ce757fff78fec6276c60052ed71d207454
Reviewed-on: https://go-review.googlesource.com/c/go/+/333014
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2021-07-07 17:31:57 +00:00
Michael Anthony Knyszek
c96833e5ba doc: remove stale comment about arm64 port
Fixes #47079.

Change-Id: I8a671e3fdc13083e44e8d89064a5e7621e53bc4c
Reviewed-on: https://go-review.googlesource.com/c/go/+/333075
Trust: Michael Knyszek <mknyszek@google.com>
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2021-07-07 16:41:12 +00:00
Cuong Manh Le
4676c3675e [dev.typeparams] cmd/compile: rename PartialCallType -> MethodValueType
CL 330837 rename OCALLPART to OMETHVALUE, so do the same thing for
PartialCallType for consistency.

Change-Id: Id40eb35bbcee7719acfb41fce0e2b968879f9fef
Reviewed-on: https://go-review.googlesource.com/c/go/+/332769
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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2021-07-07 11:18:25 +00:00
Matthew Dempsky
5c42b6a953 [dev.typeparams] test: add regress tests that fail(ed) with -G=3
This CL includes multiple test cases that exercise unique failures
with -G=3 mode that did not affect unified IR mode. Most of these were
found over a period of about 3 hours of manual experimentation.

Thanks to Cuong Manh Le for test cases 11 and 12.

Updates #46704.

Change-Id: Ia2fa619536732b121b6c929329065c85b9384511
Reviewed-on: https://go-review.googlesource.com/c/go/+/326169
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2021-07-07 11:12:24 +00:00
Matthew Dempsky
49ade6b298 [dev.typeparams] test: add expected failure mechanism
This CL changes the existing excluded-test mechanism into a
known-failure mechanism instead. That is, it runs the test regardless,
but only reports if it failed (or succeeded) unexpectedly.

It also splits the known failures list into fine-grain failure lists
for types2, types2 w/ 32-bit target, -G=3, and unified.

Updates #46704.

Change-Id: I1213cbccf1bab6a92d9bfcf0d971a2554249bbff
Reviewed-on: https://go-review.googlesource.com/c/go/+/332551
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2021-07-07 11:12:13 +00:00
Matthew Dempsky
cd00499c61 [dev.typeparams] cmd/compile: better Call constructor
Historically, it's been tedious to create and typecheck ir.OCALL
nodes, except by handing them off entirely to typecheck. This is
because typecheck needed context on whether the call is an expression
or statement, and to set flags like Func.ClosureCalled and
CallExpr.Use.

However, those flags have now been removed entirely by recent CLs, so
we can instead just provide a better typecheck.Call function for
constructing and typechecking arbitrary call nodes. Notably, this
simplifies things for unified IR, which can now incrementally
typecheck call expressions as it goes without worrying about context.

Change-Id: Icbdc55c3bd8be84a242323bc45006f9dec09fdcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/332692
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2021-07-04 00:19:36 +00:00
Matthew Dempsky
899b158ee9 [dev.typeparams] cmd/compile: set Func.ClosureCalled in escape analysis
The Func.ClosureCalled flag is an optimization used by escape analysis
to detect closures that were directly called, so we know we have
visibility of the result flows. It's not needed by any other phases of
the compiler, so we might as well calculate it within escape analysis
too.

This saves some trouble during IR construction and trying to maintain
the ClosureCalled flag through inlining and copying.

Passes toolstash -cmp.

Change-Id: Ic53cecb7ac439745c0dfba2cd202b9cc40f1e47c
Reviewed-on: https://go-review.googlesource.com/c/go/+/332691
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2021-07-04 00:19:26 +00:00
Matthew Dempsky
ea5369bac0 [dev.typeparams] cmd/compile: remove ir.CallUse
Unneeded after the previous CL changed inlining to leave OINLCALL
nodes in place.

Change-Id: I9af09a86a21caa51a1117b3de17d7312dd702600
Reviewed-on: https://go-review.googlesource.com/c/go/+/332650
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2021-07-03 17:46:01 +00:00
Matthew Dempsky
c45d0eaadb [dev.typeparams] cmd/compile: flatten OINLCALL in walk
Inlining replaces inlined calls with OINLCALL nodes, and then somewhat
clumsily tries to rewrite these in place without messing up
order-of-evaluation rules.

But handling these rules cleanly is much easier to do during order,
and escape analysis is the only major pass between inlining and
order. It's simpler to teach escape analysis how to analyze OINLCALL
nodes than to try to hide them from escape analysis.

Does not pass toolstash -cmp, but seems to just be line number
changes.

Change-Id: I1986cea39793e3e1ed5e887ba29d46364c6c532e
Reviewed-on: https://go-review.googlesource.com/c/go/+/332649
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2021-07-03 17:45:52 +00:00
Matthew Dempsky
ad2ba3ff51 [dev.typeparams] src,cmd: run 'go mod tidy'
Run 'go mod tidy' to satisfy the longtest builders.

Change-Id: I5b31b63d0f273fca0833e44b826edfd726a1a958
Reviewed-on: https://go-review.googlesource.com/c/go/+/332669
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2021-07-03 17:45:01 +00:00
Matthew Dempsky
5dac279fbd [dev.typeparams] cmd/compile: formalize "hidden parameters" idea
This CL formalizes the closure-var trick used for method-value
wrappers to be reusable for defining other functions that take hidden
parameters via the closure-context register. In particular, it:

1. Adds a new ir.NewHiddenParam function for creating hidden
parameters.

2. Changes ir.NewClosureVar to copy Type/Typecheck from the closure
variable, so that callers can needing to manually copy these.

3. Updates existing code accordingly (i.e., method-value wrappers to
start using ir.NewHiddenParam, and closure builders to stop copying
types).

Longer term, I anticipate using this to pass dictionaries to stenciled
functions within unified IR.

Change-Id: I9da3ffdb2a26d15c6e89a21b4e080686d6dc872c
Reviewed-on: https://go-review.googlesource.com/c/go/+/332612
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2021-07-03 10:21:47 +00:00
Gerrit Code Review
611056ec34 Merge "[dev.typeparams] all: merge master (912f075) into dev.typeparams" into dev.typeparams 2021-07-03 02:00:21 +00:00
Matthew Dempsky
ef39edefe1 [dev.typeparams] src,cmd: bump go.mod to 'go 1.18'
Necessary for building/testing generics code within src/ or src/cmd/
since CL 332373, and we'll need to do this eventually anyway.

Change-Id: Ia8c658c92d861fd3803fa18bfc80407c3381b411
Reviewed-on: https://go-review.googlesource.com/c/go/+/332554
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2021-07-02 23:55:07 +00:00
Matthew Dempsky
f35d86fd5f [dev.typeparams] all: merge master (912f075) into dev.typeparams
Conflicts:

- src/cmd/compile/internal/escape/escape.go

  On master, CL 332230 changed the ">=" in HeapAllocReason to ">"; but
  on dev.typeparams, CL 329989 moved HeapAllocReason into utils.go.

Merge List:

+ 2021-07-02 912f075047 net/http: mention socks5 support in proxy
+ 2021-07-02 287c5e8066 cmd/compile: fix stack growing algorithm
+ 2021-07-02 743f03eeb0 spec, unsafe: clarify unsafe.Slice docs
+ 2021-07-02 6125d0c426 cmd/dist: correct comment: SysProcAttri -> SysProcAttr
+ 2021-07-01 03761ede02 net: don't reject null mx records
+ 2021-07-01 877688c838 testing: add TB.Setenv
+ 2021-07-01 ef8ae82b37 cmd/compile: fix bug in dwarf-gen var location generation
+ 2021-07-01 770899f7e1 cmd/go: add a regression test for 'go mod vendor' path traversal
+ 2021-07-01 835d86a17e cmd/go: use path.Dir instead of filepath.Dir for package paths in 'go mod vendor'
+ 2021-07-01 eb437ba92c cmd/compile: make stack value size threshold comparisons consistent
+ 2021-07-01 9d65578b83 cmd/compile: fix typos in document

Change-Id: I08aa852441af0f070aa32dd2f99b6fa4e9d79cfa
2021-07-02 16:03:51 -07:00
Dan Scales
b994cc69e0 [dev.typeparams] cmd/compile: separate out creating instantiations from creating dictionaries
We often need to create a function/method instantiation, but not a
dictionary, because the call to the instantiation will be using a
sub-dictionary. Also, main dictionaries are only need for concrete,
non-gcshape types, whereas instantiations will be for gcshape types (or
concrete types, for strict stenciling).

Created a helper function getDictOrSubdict() to reduce duplicated code.
Also, moved gfGetGfInfo() call in getDictionarySym() inside conditional
where it is needed, to avoid extra work when dictionary has already been
created.

Change-Id: I06587cb2ddc77de2f991e9f9eaf462d2c5a5d45e
Reviewed-on: https://go-review.googlesource.com/c/go/+/332550
Trust: Dan Scales <danscales@google.com>
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2021-07-02 21:12:15 +00:00
Sean Liao
912f075047 net/http: mention socks5 support in proxy
Change-Id: I55b6d5c77221569eeafea625379affd476a65772
Reviewed-on: https://go-review.googlesource.com/c/go/+/326011
Reviewed-by: Damien Neil <dneil@google.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-07-02 21:06:08 +00:00
go101
287c5e8066 cmd/compile: fix stack growing algorithm
The current stack growing implementation looks not right.
Specially, the line runtime/stack.go#L1068 never gets executed,
which causes many unnecessary copystack calls.

This PR is trying to correct the implementation.
As I'm not familiar with the code, the fix is just a guess.

Change-Id: I0bea1148175fad34f74f19d455c240c94d3cb78b
GitHub-Last-Rev: 57205f91fe
GitHub-Pull-Request: golang/go#47010
Reviewed-on: https://go-review.googlesource.com/c/go/+/332229
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2021-07-02 20:11:05 +00:00
Ian Lance Taylor
743f03eeb0 spec, unsafe: clarify unsafe.Slice docs
For #19367

Change-Id: If0ff8ddba3b6b48e2e198cf3653e73284c7572a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/332409
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Keith Randall <khr@golang.org>
2021-07-02 19:26:52 +00:00
Dan Scales
6dec18cc75 [dev.typeparams] cmd/compile: start using sub-dictionary entries where needed
Added new struct instInfo for information about an instantiation (of a
generic function/method with gcshapes or concrete types). We use this to
remember the dictionary param node, the nodes where sub-dictionaries
need to be used, etc. The instInfo map replaces the Stencil map in
Package.

Added code to access sub-dictionary entries at the appropriate call
sites. We are currently still calculating the corresponding main
dictionary, even when we really only need a sub-dictionary. I'll clean
that up in a follow-up CL.

Added code to deal with "generic" closures (closures that reference some
generic variables/types). We decided that closures will share the same
dictionary as the containing function (accessing the dictionary via a
closure variable). So, the getGfInfo function now traverses all the
nodes of each closure in a function that it is analyzing, so that a
function's dictionary has all the entries needed for all its closures as
well. Also, the instInfo of a closure is largely shared with its
containing function. A good test for generic closures already exists
with orderedmap.go.

Other improvements:
 - Only create sub-dictionary entries when the function/method
   call/value or closure actually has type params in it. Added new test
   file subdict.go with an example where a generic method has an
   instantiated method call that does not depend not have type params.

Change-Id: I691b9dc024a89d2305fcf1d8ba8540e53c9d103f
Reviewed-on: https://go-review.googlesource.com/c/go/+/331516
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2021-07-02 19:07:06 +00:00
komisan19
6125d0c426 cmd/dist: correct comment: SysProcAttri -> SysProcAttr
Fixes #46982

Change-Id: I07a18507b7aad828714b187f296fa7268f32b1c4
GitHub-Last-Rev: f498febffd
GitHub-Pull-Request: golang/go#46983
Reviewed-on: https://go-review.googlesource.com/c/go/+/331869
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2021-07-02 16:25:10 +00:00
Matthew Dempsky
a18726a648 [dev.typeparams] cmd/compile: incremental typecheck during unified IR
This CL changes unified IR to incrementally typecheck the IR as it's
constructed. This is significant, because it means reader can now use
typecheck.Expr to typecheck sub-expressions when it's needed. This
should be helpful for construction and insertion of dictionaries.

This CL does introduce two quirks outside of unified IR itself,
which simplify preserving binary output:

1. Top-level declarations are sorted after they're constructed, to
avoid worrying about the order that closures are added.

2. Zero-padding autotmp_N variable names. Interleaving typechecking
means autotmp variables are sometimes named differently (since their
naming depends on the number of variables declared so far), and this
ensures that code that sorts variables by names doesn't suddenly sort
autotmp_8/autotmp_9 differently than it would have sorted
autotmp_9/autotmp_10.

While at it, this CL also updated reader to use ir.WithFunc instead of
manually setting and restoring ir.CurFunc. There's now only one
remaining direct use of ir.CurFunc.

Change-Id: I6233b4c059596e471c53166f94750917d710462f
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2021-07-02 14:56:37 +00:00
Matthew Dempsky
2aea44204e [dev.typeparams] cmd/compile: enable generics syntax with -lang=go1.18
We already use -lang=go1.18 to control the types2 type checker
behavior. This CL does the same for the parser.

Also, disable an assertion in the unified IR linker that depended on
the -G flag. This assertion was more useful during initial
bootstrapping of that code, but it's less critical now.

With these two changes, "GOEXPERIMENT=unified ./make.bash" is enough
to get a fully functional generics-enabled toolchain. There's no need
to continue specifying custom compiler flags later on.

Change-Id: I7766381926f3bb17eee2e5fcc182a38a39e937e1
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2021-07-02 14:55:39 +00:00
Robert Griesemer
30e5f266ed [dev.typeparams] cmd/compile/internal/types2: move (remaining) type decls into their own files (cleanup)
This change moves the type declarations and associated methods for
each of the remaining Type types into their respective files. Except
for import and comment adjustments, and receiver name adjustments for
the Underlying and String methods, no functional changes are made.

Change-Id: I3b9ccab3c85abea4852bacd28c2e47cec05c0bac
Reviewed-on: https://go-review.googlesource.com/c/go/+/332093
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2021-07-01 22:17:50 +00:00