The refactoring of CL 335929 to merge the instance and Named types
resulted in type instances only being evaluated once. As a side effect,
we only verified constraints once per unique instantiation expression.
This can be confusing if type instantations are occurring far apart in
the code. Resolve this by lifting up the verification logic into
Instantiate and InstantiateLazy.
Change-Id: Icd5a482d097d983073955c62931441edfd92f5c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/335978
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Storing temporary syntactic information using an *instance type forces
us to be careful not to leak references to *instance in the checker
output. This is complex and error prone, as types are written in many
places during type checking.
Instead, temporarily pin the necessary syntactic information directly to
the Named type during the type checking pass. This allows us to avoid
having to sanitize references.
This includes a couple of small, unrelated changes that were made in the
process of debugging:
- eliminate the expandf indirection: it is no longer necessary
- include type parameters when printing objects
For #46151
Change-Id: I767e35b289f2fea512a168997af0f861cd242175
Reviewed-on: https://go-review.googlesource.com/c/go/+/335929
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Removed a case in transformCall() where we were setting a type on n,
which isn't needed, since noder2 already set the type of n. More
importantly, we are losing information, since the type of the results
may be a shape type, but the actual type of call is the known type
from types2, which may be a concrete type (in this case Zero[MyInt]).
That concrete type will then be used correctly if the concrete result is
converted to an interface.
If we are inlining the call to Zero[MyInt], we need to add an implicit
CONVNOP operation, since we are going to use the result variable
directly, which has a shape type. So, add an implicit CONVNOP to
remember that the known type is the concrete type.
Also cleaned up 14.go a bit, so it is more understandable. Renamed type
T to AnyInt, since T is used elsewhere as a type parameter. Reformatted
Zero function and added a comment.
Change-Id: Id917a2e054e0bbae9bd302232853fa8741d49b64
Reviewed-on: https://go-review.googlesource.com/c/go/+/336430
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
METHVALUE in a generic function (that is not called) was not causing
buildClosure() to be called and therefore not using dictionaries. Also,
had to add an extra check to make sure that if we have a FUNCINST
node above a METHVALUE, we only call buildClosure once.
Change-Id: I49756152fc343e5ac1c449e697960fc2a0f482ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/336429
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
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types2 doesn't actually give us the type of an instantiated
function/method after the type args have been applied. So, do a
substitution at the point that we create the OFUNCINST nodes.
We also needed to add in translation of the typeparams of a function
signature in the type substituter. If the type params of the function
become all concrete after the substitution, then we just drop them,
since the whole signature must now be concrete.
Change-Id: I6116d2aa248be6924ec9e6d8516678db45aa65c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/336370
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types2 will have already proved the expression's type is compatible, so
just assign the one const to have the same type as the operand.
Fixes#47258.
Change-Id: If0844e6bf6d0a5e6b11453b87df71353863ccc5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/336009
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The builtins.go test is derived from
cmd/compile/internal/types2/testdata/check/builtins.go2, after removing
the error cases. Added a few extra tests for len/cap/append.
Fixed one bug, which is that DELETE operations can't be transformed if
their argument is a typeparam. Also, the tranform of LEN/CAP calls does
not need to be delayed. Removed out-date references to the old
typechecker in the comments.
Change-Id: If7a21506a7ff63ff7c8e87ccd614ef4ff3a0d3c8
Reviewed-on: https://go-review.googlesource.com/c/go/+/336010
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Remaining stuff from Dan's CL 335412 to get tests passing.
- Removed PTRLIT case in node() that was added with the gcshape change.
I don't think it is needed anymore.
- Modified (*itab).init() to add an irrelevant pointer (the itab
itself) for the '==' entry of interfaces with 'comparable'. That
entry is not used, so we just want to avoid the error that the given
type doesn't actually have an '==' method.
Change-Id: I9b2d4c8342c0b2048d76e003d95023f4ccd559f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/336149
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FUNCINST nodes aren't instantiated correctly. Skip those types when
adding to the set of types considered for the dictionary. Those types
include those which are uninstantiated(have tparams), and those with
type parameters that aren't a parameter of the containing function
(they are the type parameter of the function being called).
Allow func types to be put in the dictionary.
Change-Id: I26bab85d3eebc2f54d02b4bba5e31407faf7c5b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/336129
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
Trust: Keith Randall <khr@golang.org>
Calling MarkTypeUsedInInterface before inlining is problematic (when
using the containing function as the reference source), because we end
up attaching a relocation to the original function, which is then
deadcode removed because all instances of it were inlined. (All other
current uses of MarkTypeUsedInInterface happen after inlining, so they
don't have this problem.)
Instead, attach the relocation to the dictionary in which the type
appears. This should always work, because if the dictionary is ever
deadcode eliminated, then the type can never be put in an interface,
which means we indeed don't need its methods.
This CL is a bit overkill, as not *all* types in the dictionary need
this mark, but it is sufficient for now.
Change-Id: I2d39456691f1c3df8efe3bddc3b9017e0ef37a7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/336012
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
We'll have to revisit eventually, but disabling for now.
Change-Id: Ic34cfe451939d61884079bb125b9290db1e05e47
Reviewed-on: https://go-review.googlesource.com/c/go/+/335829
Run-TryBot: Keith Randall <khr@golang.org>
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
Still 1-1 with real types, but now with their own names!
Shape types are implicitly convertible to (and convertible from)
the types they represent.
Change-Id: I0133a8d8fbeb369380574b075a32b3c987e314d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/335170
Run-TryBot: Keith Randall <khr@golang.org>
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Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
This CL makes two changes:
1. It moves object symbols and code tags into a new "relocName"
relocation, which should eventually allow getting rid of objStub.
2. It moves the type parameter data into the relocObjDict relocation,
so everything related to writing out dictionaries is contained there.
Change-Id: If0f7ff7d9384e8664957c3180bf6f20e97bcff6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/336051
Trust: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
CL 330330 moved logic for wrapping go/defer from order to esacpe
analysis. It introduced a bug involves go/defer statement with ABI0
functions.
Consider this following code:
package p
//go:cgo_unsafe_args
func g(*int) (r1 struct{}) {
return
}
func f() {
defer g(new(int))
}
g is a cgo-like generated function with ABI0. While compiling g, we set
the offset per ABI0.
The function f is rewritten into:
func f() {
_0, _1 := g, new(int)
defer func() { _0(_1) }()
}
The temporary _0 hold function value with the same type as g, but with
class PAUTO. Thus ssagen/ssa.go:state.call cannot handle it and use
ABIDefault to set the offset, causes the offset of r1 changed
CL 330332 intended to optimize code generated for wrapping function, by
rewriting the wrapper function into:
func f() {
_0 := new(int)
defer func() { g(_0) }()
}
So it fixed the bug unintentionally.
This CL add regression test for this bug, and also add a comment to
explain while not wrapping declared function is important.
Updates #47227
Change-Id: I75c83d1d9cc7fd4699e6b218a295d0c0a10ef471
Reviewed-on: https://go-review.googlesource.com/c/go/+/334882
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We have almost 200 uses of the "assert" helper functions in noder and
typecheck. Clearly the tiny bit of extra convenience of writing a
one-line assertion rather than an if+panic is helpful, so we might as
well add functions for this to base itself so that it's easier to
write more informative error messages.
Change-Id: I06e2db2f0455af063937b25a53ca42f9413cf496
Reviewed-on: https://go-review.googlesource.com/c/go/+/336050
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For traceback argument printing, we want to print at most 10
words, then print "..." if there are still more args and/or
fields. The current code has off-by-one error that for 11
non-aggregate typed args, it prints the first 10 but without the
"...". Also, for aggregate-typed args, in some cases it may print
an extra "..." when there is actually no more fields.
The problem for this is that visitType return false (meaning not
to continue visiting) if it reaches the limit anywhere during the
recursive visit. It doesn't distinguish whether it has printed
anything for the current arg. If it reaches the limit before it
prints anything, it means that we're visiting the extra arg/field,
so the caller should print "..." and stop. If it prints
something then reaches the limit, however, the caller should keep
going, and only print "..." at the next iteration when there is
actually an extra arg/field. This CL does so.
Fixes#47159.
Change-Id: I93fc25b73ada2b5a98df780c45e5b0c9565dc2fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/334710
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We should preserve type parameter indices when transforming them using
applyTypeFunc.
Change-Id: Ib75f5cf1a146bd7e6850368fa954c1affcba3ad1
Reviewed-on: https://go-review.googlesource.com/c/go/+/327269
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Change-Id: I523d5fd810b82154a204670d46fc250a0fc66791
Reviewed-on: https://go-review.googlesource.com/c/go/+/333849
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
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This is a port of CL 334911 to go/types.
Change-Id: I2cafdc76cb4d06ba82188c530f35952c1f77d292
Reviewed-on: https://go-review.googlesource.com/c/go/+/335569
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This is a port of CL 334151 to go/types.
Fixes#47127
Change-Id: I57d69c498d2649a9e1657559e4c0271333096c88
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This is a port of CL 333890 to go/types.
Change-Id: I8ee20f405dad98083bb5e91636044d132a95d909
Reviewed-on: https://go-review.googlesource.com/c/go/+/335081
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This is a port of CL 333889 to go/types.
Change-Id: I66cefb81a33f4677efc18c1ca923ded374a87f12
Reviewed-on: https://go-review.googlesource.com/c/go/+/335080
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This is a port of CL 333770 to go/types, adjusted for the error
reporting API and to not support compiler error messages. An error
message changed (to 'invalid receiver type' from just 'invalid
receiver'), so a test had to be adjusted.
Change-Id: I166e8831d8c9f98ebfb0270fe5221586fc112825
Reviewed-on: https://go-review.googlesource.com/c/go/+/335079
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This is a port of CL 333729 to go/types.
Change-Id: I8682f549a7a15124b1b338f8c73e83a57d138368
Reviewed-on: https://go-review.googlesource.com/c/go/+/335078
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This is a port of CL 333713 to go/types.
Change-Id: I517f52592f65cc76e11a12d9148b20c12d9e3e81
Reviewed-on: https://go-review.googlesource.com/c/go/+/335077
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This is a port of CL 333712 to go/types, adjusted for the different
error reporting API and to position errors on the arrows.
Fixes#43671
Change-Id: I7d2de249e86d272c89a046f60e632e75848ff865
Reviewed-on: https://go-review.googlesource.com/c/go/+/335076
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This is a port of CL 333709 to go/types, adjusted for the different
error API.
Fixes#43671
Change-Id: Ifd340149bfbcabe401cec74398cb83f2ae812e51
Reviewed-on: https://go-review.googlesource.com/c/go/+/335075
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This is a port of CL 333671 to go/types.
Change-Id: Ic2f66b49f1db68fb93d5095131733e99a37b9cbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/335074
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This is a port of CL 333669 to go/types, adjusted for the position and
IndexExpr APIs, and excluding the noder changes.
Change-Id: I3ac4bbf271947c3cf80ab04c462a91657316f4fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/335073
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This is a port of CL 333589 to go/types.
Change-Id: Ib9fb1b09e10c400e62d20b55ff0558f3a92fc0eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/335072
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This is a partial port of CL 333569 containing just changes to go/types.
Changes to the importer wil be made in a separate CL.
Change-Id: I9383e260b76402875ca6eb23c4478a6a3e8c1f0d
Reviewed-on: https://go-review.googlesource.com/c/go/+/335071
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This is a partial port of CL 323029, consisting only of changes to
go/types. Changes to the importer will be made in a separate CL.
Change-Id: I3b300f5e8f4df36c2c87e3f164705cd3c36218ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/335145
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This is a partial port of CL 322609, containing only changes to
go/types. Importer changes will be made in a separate CL.
Change-Id: I50af3c1ed5e949bb28a3462d717c0eb29a5f31ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/335144
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This is a partial port of CL 319930, containing only changes to
go/types. Importer changes will be made in a separate CL.
The TypeParams APIs are left unexported for now; they will be exported
when they are needed.
Change-Id: I74bd246d4c174cb38f8360d921c733fa03900eab
Reviewed-on: https://go-review.googlesource.com/c/go/+/335143
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This is a port of CL 333383 to go/types.
Change-Id: I7ff68116cbe63337dbcc834c473a2a5588274e36
Reviewed-on: https://go-review.googlesource.com/c/go/+/335115
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This is a port of CL 333192 to go/types.
Change-Id: I12fd6b682d40c4d30b9ac0e87c463843cf5030d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/335114
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This is a port of CL 327170 to go/types. Tests were not ported; they can
be added later.
Change-Id: Ic9fd681ac06dd187c1715efaf882b11353bc395a
Reviewed-on: https://go-review.googlesource.com/c/go/+/335113
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This is a port of CL 332609 to go/types.
Change-Id: I3482ea1b97bc7101b987ef312cd6cade80a5843f
Reviewed-on: https://go-review.googlesource.com/c/go/+/335112
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In CL 326211 a change was made to switch "go.map.zero" symbols from
non-pkg DUPOK symbols to hashed symbols. The intent of this change was
ensure that in cases where there are multiple competing go.map.zero
symbols feeding into a link, the largest map.zero symbol is selected.
The change was buggy, however, and resulted in duplicate symbols in
the final binary (see bug cited below for details). This duplication
was relatively benign for linux/ELF, but causes duplicate definition
errors on Windows.
This patch switches "go.map.zero" symbols back from hashed symbols to
non-pkg DUPOK symbols, and updates the relevant code in the loader to
ensure that we do the right thing when there are multiple competing
DUPOK symbols with different sizes.
Fixes#47185.
Change-Id: I8aeb910c65827f5380144d07646006ba553c9251
Reviewed-on: https://go-review.googlesource.com/c/go/+/334930
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Distinguish the gcshape of all top-level instantiated type from normal
concrete types, even if they have the exact same underlying "shape",
because in a function instantiation, any method call on this type arg
will be a generic method call (requiring a dictionary), rather than a
direct method call on the underlying type (no dictionary).
So, we add the instshape prefix to the gcshape name for instantiated
types, and we make it a defined type with that name.
Change-Id: I33056269d24f3451a2632a5ce6a481108f533c9c
Reviewed-on: https://go-review.googlesource.com/c/go/+/335169
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This is a port of CL 332555 to go/types.
Change-Id: I9b26bba8b605f5bbbd8f0f81fd6651a4a3ff4b57
Reviewed-on: https://go-review.googlesource.com/c/go/+/335111
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This is a port of CL 332553 to go/types. The "expr" variable is renamed to
"e" in Checker.indexExpr to be consistent with types2.
Change-Id: I7905bebf2e8dab47256361362b16becf7596cf95
Reviewed-on: https://go-review.googlesource.com/c/go/+/335110
Reviewed-by: Robert Griesemer <gri@golang.org>
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This is a port of CL 332411 to go/types. methodset_test.go is similarly
updated.
Change-Id: I332b1837a954acc9d3b7e0e2ad2bec3425f088f7
Reviewed-on: https://go-review.googlesource.com/c/go/+/335109
Reviewed-by: Robert Griesemer <gri@golang.org>
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This is a port of CL 332093 to go/types. A missing comment is added to
named.go, and some TODOs were added to converge on the TypeParam API.
Change-Id: I781a1d0d3fc6c11bb323123e954c106094d998ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/335040
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
This is a port of CL 332092 to go/types.
Change-Id: I9971c49570424368575108832eac0cd978eb3fe6
Reviewed-on: https://go-review.googlesource.com/c/go/+/335039
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
