Rather then passing through a buffer, qualified, and visited
list to each helper function, maintain state in a typeWriter
object and use methods on it. This cleans up this code quite
a bit.
Use a map ("seen") for cycle detection rather than a list.
Move printing of [ and ] for type lists into the typeList
method so that callers don't have to do it themselves.
Change-Id: I1346373e979cb90710fbc073953aa51e2f6581f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/345890
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
The level of support for pruning — not the lazy/eager loading behavior
— is the more fundamental property, and what matters in terms of what
invariants we need to maintain.
If the main module supports pruned module graphs we load its
dependencies lazily, and if it does not support pruned module graphs
we load its dependencies eagerly. However, in principle we could also
load the module graph lazily even in modules that do not support graph
pruning — we would just be more likely to overlook inconsistent
requirements introduced by hand-edits or bad VCS merges to the go.mod
file.
(After this change, a “lazy” module is just one in which we happen not
to have loaded the module graph, and an “eager” one is one in which we
happen to load the module graph more aggressively.)
Updates #36460
For #47397
Change-Id: I0d2ffd21acc913f72ff56b59a6bdc539ebc3d377
Reviewed-on: https://go-review.googlesource.com/c/go/+/345393
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Replace the last remaining use with a reference to #48024.
Change-Id: I699711b4e42abe9c6d3512c28d2ee81a84e3263a
Reviewed-on: https://go-review.googlesource.com/c/go/+/345392
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Fixes#48056
Change-Id: I13ca4caadbabf02084f66ab28b4cf0c4a3705370
Reviewed-on: https://go-review.googlesource.com/c/go/+/346049
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
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It's not needed outside of package types anymore.
Change-Id: Idadf915fc254920ca778b5f5f8de8a1300da1953
Reviewed-on: https://go-review.googlesource.com/c/go/+/345794
Trust: Matthew Dempsky <mdempsky@google.com>
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Once upon a time, this was used by package walk to compute the
"conv[TIE]2[TIE]" function names, etc.; but it seems like those
callers have all changed to directly specializing on IsInterface and
IsEmptyInterface instead.
Change-Id: I629cdf076a09e7255ae293b8f879db0cdcf4de5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/345793
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This issue has been fixed in https://golang.org/cl/345411Fixes: #47892
Change-Id: I13dd3814650913da065e5f24a0c61d30adb0633a
Reviewed-on: https://go-review.googlesource.com/c/go/+/345229
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
Trust: Keith Randall <khr@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
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This is not implemented on AIX and Illumos, and we already have a
mechanism to skip the test case -- let's use it.
Change-Id: Idb1cc2d716cf6d0731e93dfc3aa7853b9edec41f
Reviewed-on: https://go-review.googlesource.com/c/go/+/330752
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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storeOneLoad decompose Load that is then stored, the offset value must
be created on the same block with the Load to be dominated, otherwise,
it's unsafe if one does not dominate the other.
Fixes#48026
Change-Id: Iee5e6c5d3e1b09862afe4e65f7bcd771b4c57367
Reviewed-on: https://go-review.googlesource.com/c/go/+/345434
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Keith Randall <khr@golang.org>
b.Controls has type [2]*Value, thus len(b.Controls) > 0 is always true.
The right check should be b.Controls[0] != nil, though, this is also
always true, since when we always set control value for BlockRet and
BlockRetJmp when state.exit is called.
Though checkFunc also checks for nil control value of ret/retjmp, but
it happens later after expand_calls pass, so better to be defensive
here, just in case.
Change-Id: Ie4a292a3494dfbf5e6d872cde498703023b84d00
Reviewed-on: https://go-review.googlesource.com/c/go/+/345433
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Support 'type C comparable' properly by using the same logic as for
'type T error', since ErrorType and ComparableType are entirely
analogous.
Added support for 'any' type as well, as requested by Robert. (For the
future - we can't currently have 'any' anywhere other than in a
constraint.)
Fixes#47966
Change-Id: I68bd284ced9a8bfca7d2339cd576f3cb909b1b83
Reviewed-on: https://go-review.googlesource.com/c/go/+/345174
Trust: Dan Scales <danscales@google.com>
Trust: Robert Griesemer <gri@golang.org>
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Discover while working on moving checkptr instrumentation from walk to
SSA generation.
Change-Id: I3f4a41fe4ad308b86c7c57d14b6ccc7c613e7f98
Reviewed-on: https://go-review.googlesource.com/c/go/+/345432
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
CL 343972 added SliceExpr.CheckPtrCall field but forgot to add ignore
tag for mknode. This CL adds the missing tag.
Change-Id: Ib39bff3d456063bdc10fc17b4047b8392d373bf1
Reviewed-on: https://go-review.googlesource.com/c/go/+/345431
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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AppendRune appends the UTF-8 encoding of a rune to a []byte.
It is a generally more user friendly than EncodeRune.
EncodeASCIIRune-4 2.35ns ± 2%
EncodeJapaneseRune-4 4.60ns ± 2%
AppendASCIIRune-4 0.30ns ± 3%
AppendJapaneseRune-4 4.70ns ± 2%
The ASCII case is written to be inlineable.
Fixes#47609
Change-Id: If4f71eedffd2bd4ef0d7f960cb55b41c637eec54
Reviewed-on: https://go-review.googlesource.com/c/go/+/345571
Trust: Joe Tsai <joetsai@digital-static.net>
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
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Semantically, TypeObject is the interface that go/types.TypeName would
implement, so we might as well use that instead of the more generic
Object (analog to go/types.Object) for NewNamed. In practice, this
doesn't really matter though, because we use *ir.Name for almost all
Objects anyway.
Also, remove VarObject: its last use was removed in CL 302071 (March
2021).
Change-Id: I6e987ecd419105e09f74fc8d60cadb61bcbc751f
Reviewed-on: https://go-review.googlesource.com/c/go/+/345810
Trust: Matthew Dempsky <mdempsky@google.com>
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We already have a function that does all the right checks and it's called
varType. The only reason it wasn't used for type switch cases was that we
also have to accept the nil value. That was handled with typeOrNil. But
that function (typeOrNil) was only used for this specific purpose and I long
wished to get rid of it. It turns out that there's only one way to write the
untyped value nil, which is to actually write "nil" (maybe with parentheses).
So looking for that turned out to be simpler than using typeOrNil.
The new code does exactly that, and now we can just use varType and delete
typeOrNil. With this, there is now less code (excluding the test) and the code
is simpler and more correct.
Fixes#48008.
Change-Id: I8f2d80e61ae663c886924909f22bbfa634e7779c
Reviewed-on: https://go-review.googlesource.com/c/go/+/345790
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The current implementation of PtrDataSize checks HasPointers each
call, which could lead to exponential blow-up in handling (admittedly
contrived) deeply nested structs.
To avoid the duplicate recursion, this CL incorporates the HasPointers
logic directly int PtrDataSize, and then re-defines HasPointers as
simply "PtrDataSize(t) > 0".
This CL also tightens up HasPointers/PtrDataSize to only be valid on
actual Go types. Fortunately, there was only one instance where this
wasn't already the case (escape analysis), and that's easily fixed
with an extra check for untyped types.
Change-Id: I0044bf9b558a88333aee2ccb137afb6cb4fea1db
Reviewed-on: https://go-review.googlesource.com/c/go/+/345809
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Now that the universe is fully initialized within package types, we
can stop exporting New and NewBasic, which are only needed for that
purpose. So this CL renames "New" to "newType" and "NewBasic" to
"newBasic".
This CL also moves the initialization of Types[TBLANK] and Types[TNIL]
from typecheck.InitUniverse to types.InitTypes, which I missed in an
earlier CL. And a use of "New(TSTRING)" in test/abiutils_test.go,
which should just be "Types[TSTRING]" anyway.
Change-Id: I1d83f93e27b88be289d4f3f6c16357a20f570460
Reviewed-on: https://go-review.googlesource.com/c/go/+/345487
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Automated CL to rewrite existing code to use OrigSym getters and
setters. Afterwards, we also unexported OrigSym, and then rename the
getter to OrigSym.
[git-generate]
cd src/cmd/compile/internal
: Workaround rf issue with types2 tests.
rm types2/*_test.go
rf '
ex ./noder ./typecheck {
import "cmd/compile/internal/types"
var s *types.Sym
var t *types.Type
t.OrigSym = s -> t.SetOrigSym(s)
t.OrigSym -> t.OrigSym_()
}
'
cd types
rf '
mv Type.OrigSym Type.origSym
mv Type.OrigSym_ Type.OrigSym
'
: Revert types2 hack.
cd ../types2
git checkout HEAD^ .
Change-Id: I8eb17098613b1575df56b8189b1615823071d3d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/345485
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Will be used in the next CL, so that Type.OrigSym can be unexported.
Change-Id: I085f2a886abd419343c7ec7e4ae18c19de1fbbd4
Reviewed-on: https://go-review.googlesource.com/c/go/+/345484
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Commands run:
go get golang.org/x/mod@master
go mod vendor
go mod tidy
This change pulls in the x/mod on master. Before it was pulled in on
the dev.cmdgo branch of x/mod, but now that the workspace changes have
been pulled into x/mod, we can change the requirement back on to the
main branch.
Change-Id: I296799a87ecc08ba17c0722e955f000426b105ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/345390
Trust: Michael Matloob <matloob@golang.org>
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Conversions need to allow nil through.
We do that using a CONVIFACE instead of a DOTTYPE.
Also reorganize how nonempty interfaces are handled.
For nonempty to empty, a simple CONVIFACE suffices.
For nonempty to nonempty, we need to call the runtime to get the
new itab. Use the entry from the dictionary to identify the
target interface type (if parameterized).
Fixes#47925
Change-Id: I4ffeed964318bb3e270b06f558e6ab9c5bfc7188
Reviewed-on: https://go-review.googlesource.com/c/go/+/344830
Trust: Keith Randall <khr@golang.org>
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type I[T any] interface{}
This is an interface, but it has a type parameter.
We need to distinguish that from an interface that is not parameterized.
That means when doing type substitution on an interface with
parameters, we need to make a new one.
Same for non-empty interfaces. Even if the type parameter is not
used in any method, we sill need to make a new type.
Similar case to tstruct, above.
Change-Id: I23ad9f21d2c4ef675bf3f7d84899d9e4919d05e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/344578
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The reflect.Value.Slice method unfortunately allocates every time
since it needs to place the slice header on the heap.
This is silly since gob immediately stores the result back into slice.
Instead, use the reflect.Value.SetLen method.
DecodeBytesSlice 75.0µs ± 2% 35.2µs ± 6% -53.02%
Change-Id: I3ca0529d01bf978f2b76e215f52d369f458951ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/345572
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Make sure the parser fills in names and types for type parameter
lists, even in the case of errors.
While at it, adjust some of the test functions to accept generic
code and report all syntax errors.
Added offending source as test for types2.
Fixes#47996.
Change-Id: I449bcf5e2cb80fa2a24cdd3945f484bfca218a06
Reviewed-on: https://go-review.googlesource.com/c/go/+/345476
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The next CL is going to replace Type.Width with Type.Size(), but
Type.Size() isn't safe to call concurrently. So this CL calls
CalcStructSize, which *is* allowed to be used concurrently, but then
it's the caller's responsibility to ensure it's called right after
NewStruct.
Change-Id: If9cd81650ccb3a867b4449af757375fa56227901
Reviewed-on: https://go-review.googlesource.com/c/go/+/345483
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We need to delay fillinMethods until we get to a top-level type, so we
know all the TFORW types have been filled in, and we can do the
substitutions required by fillinMethods.
Fixes#47710
Change-Id: I298de7e7753ed31a2c2b1ff04f35177a8afc7a66
Reviewed-on: https://go-review.googlesource.com/c/go/+/345149
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
This is the only case where Align is assigned outside of package
types. Rather than adding a SetAlign method, adding a RecalcSize
function is a bit more descriptive.
Change-Id: I1b3c01ebd0e41183665baa63c926592865bbbd0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/345479
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This test was written in 2015, and hasn't had any meaningful changes
to it since. However, it's very ad hoc and pokes into internals that
it shouldn't, and it keeps getting in the way of more meaningful
refactorings. It doesn't even catch bugs; e.g., it didn't catch that
cmpstackvarlt wasn't asymmetric (CL 19778), and a bunch of its test
cases are bogus because we never actually use it to sort ir.PFUNC
nodes (assert added in this CL).
The compiler is woefully lacking in unit tests like these, but I
strongly feel this test is more of a hinderance than a help at the
moment.
Change-Id: I3ac7a3e533947aa95f325626c6eec13a43789f9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/345478
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Rather than ad hoc setting up the universe, just initialize it
properly.
Change-Id: I18484b952321f55eb3e1e48fd383068a4ee75f66
Reviewed-on: https://go-review.googlesource.com/c/go/+/345475
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This moves the package types setup code from package typecheck into
package types itself. This is a prereq for making types.Type more
opaque, because some unit tests depend on being able to init the basic
universal types.
A few notable details of this CL:
1. Creating the builtin types requires being able to create the
ir.Name/ir.OTYPE that represents it, but package types can't depend on
package ir. So we add a callback function to handle creating the
ir.Name.
2. This CL moves ir.Pkgs.Unsafe to types.UnsafePkg. Package unsafe is
part of the language, not like the other ir.Pkgs packages that are
purely implementation details.
3. This CL also moves typecheck.FakeRecv to types.FakeRecv, addressing
an outstanding TODO.
Change-Id: I64de04ce82fbcd1bb59f547e2eea3cda52d89429
Reviewed-on: https://go-review.googlesource.com/c/go/+/345474
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Report an error if an alias is used to declare a method on an
instantiated type.
Also, when resolving the receiver type, don't use asNamed to
avoid premature expansion of the type.
Fixes#47968.
Change-Id: Ie5acc4cfb1944deaaeeaee98707f31e256f8ef5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/345472
Trust: Robert Griesemer <gri@golang.org>
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This problem happens when you create a new local type that uses an
imported generic type (maybe just by instantiating it), and then that
local type needed to be included as part of an export. In that case, the
imported generic type is does not have a declaration in the local
package, so it is not necessarily created in types1, so the
crawler/export doesn't work.
To fix this issue, we just need to add a call to g.obj() for the base
generic type, to make sure that it will exist if needed later in the
compilation or for the crawler during export.
Fixes#47514
Change-Id: Ie756578f07ad0007de8a88ae909cf7534a22936e
Reviewed-on: https://go-review.googlesource.com/c/go/+/345411
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
This field is only used outside of packages types in two places, and
they follow the same pattern. So this CL creates a Type.Setvargen
function that they can use instead, so that Type.Vargen can be
unexported.
A bit clumsy, but it works for now.
Change-Id: I7b4f33fac635e2464df2fbc0607ab40902f6f09f
Reviewed-on: https://go-review.googlesource.com/c/go/+/345469
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Not used outside of package types anymore. Let's keep it that.
Change-Id: I69b464ac94edaacd219da4210f7b8618e2beaf70
Reviewed-on: https://go-review.googlesource.com/c/go/+/345413
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Merge List:
+ 2021-08-26 5e6a7e9b86 embed: remove reference to global variables in docs
+ 2021-08-26 166b691b65 cmd/compile/internal/types2: remove need for instance (struct)
+ 2021-08-26 d6bdae33e9 cmd/compile/internal/types2: address some TODOs (cleanup)
+ 2021-08-26 770df2e18d crypto/tls: fix typo in PreferServerCipherSuites comment
+ 2021-08-26 a6ff433d6a cmd/go: pass -gcflags after other flags generated by the go command
+ 2021-08-25 4f2620285d cmd/compile/internal/types2: fix type set printing and add test
+ 2021-08-25 0ac64f6d70 cmd/compile/internal/types2: rename IsMethodSet to IsConstraint (cleanup)
+ 2021-08-25 4068fb6c21 cmd/compile: always accept 1.18 syntax but complain if not 1.18
+ 2021-08-25 bf0bc4122f go/types, types2: don't re-evaluate context string for each function argument (optimization)
+ 2021-08-25 4158e88f64 cmd/compile/internal/syntax: fix position of type parameter field
+ 2021-08-25 647bef6c59 go/types: implement NewTypeList and use it instead of composite literals
+ 2021-08-25 6cf1d5d0fa cmd/compile: generic SSA rules for simplifying 2 and 3 operand integer arithmetic expressions
+ 2021-08-25 5baf60d472 bytes, strings: optimize Trim for single byte cutsets
+ 2021-08-25 3d667671ad cmd/compile: fix function contains no TParam in generic function
+ 2021-08-25 4f2ebfe34b cmd/compile: allow embed into any byte slice type
+ 2021-08-25 d2f002cb39 time/format: avoid growslice in time.String()/time.GoString()
+ 2021-08-25 08d4cc20ca cmd/compile: fix stencil call expression.
+ 2021-08-25 099b819085 cmd/compile: fix CheckSize() calculation for -G=3 and stencils
+ 2021-08-25 e1fcf8857e test: add test that caused gofrontend compiler crash
+ 2021-08-25 d37b8dedf7 test: add test case that gofrontend miscompiled
+ 2021-08-25 41b99dab0f os/user: don't skip TestLookupGroup if supported
+ 2021-08-25 de1c934b97 cmd/compile: fix checkptr false positive for (*[Big]T)(ptr)[:n:n] pattern
+ 2021-08-24 54cdef1f10 reflect: add MapIter.SetKey and MapIter.SetValue
+ 2021-08-24 5d863f89fe cmd/compile: simplify bad conversion check
Change-Id: I29ab927f0e47f44d82f9307c642900f75f4f678f
Refering to variable is both redundant since package scope is used, and
incorrect since global variables are not described in the spec.
Change-Id: Ib08a9f072fc800ee36549f758b68167d8f044878
Reviewed-on: https://go-review.googlesource.com/c/go/+/344214
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
instance was only used to hold the instantiation position for
lazy instantiation (and encode the fact that we have a lazy
instantiation). Just use a (pointer to a) syntax.Pos instead.
We could use a syntax.Pos (no pointer) and rely on the fact
that we have a known position (or fake position, if need be)
to indicate lazy instantiation. But using a pointer leads to
a smaller Named struct.
Change-Id: I441a839a125f453ad6c501de1ce499b72a2f67a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/345177
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
- Address some easy TODOs.
- Remove some TODOs that are not correct anymore or are unimportent.
- Simplify some code on the way.
Change-Id: I4d20de3725b3a735022afe022cbc002b2798936d
Reviewed-on: https://go-review.googlesource.com/c/go/+/345176
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
