This CL splits the creation of the "init" function responsible for
executing package-scope variable initialization statemens from the
creation of the "inittask" record that tells the runtime how to
sequence all program-wide package initialization.
Longer term, this is desirable because sorting variable initialization
is already handled by types2 (with Info.InitOrder), so we might as
well reuse that.
As a more immediate impetus, for unified IR, I want to defer method
wrapper generation until after inlining (to know which wrappers are
needed). But the staticinit optimization used to decide whether to
emit the inittask calls into reflectdata, which in turn tries to
generate its own method wrappers. So separating the work allows to
create the "init" function early and then emit "inittask" after
inlining is done.
Change-Id: Ice1d421f92feecaaeafdf7da6b9647c0f27e3571
Reviewed-on: https://go-review.googlesource.com/c/go/+/346629
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Improve the code which fixes up conditional branches which exceed the
range of a single instruction by inserting one extra jump when
possible instead of two.
Change-Id: Ib0eb5b0f47f7d0e0ccd55471307a5f73fbda88a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/342930
Run-TryBot: Paul Murphy <murp@ibm.com>
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Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
If the TypeParam has all the methods of an interface, allow conversions from TypeParam to interface
Fixes#47708
Change-Id: I40a82a31f6ea9354130dbe3bcfc83537094bf12c
Reviewed-on: https://go-review.googlesource.com/c/go/+/342509
Reviewed-by: Dan Scales <danscales@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
Trust: Keith Randall <khr@golang.org>
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Rather than jumping and branching to a label (the offset for which changes
when instructions are added or removed), use PC-relative offsets. This
reduces unnecessary churn in the instruction encodings.
Change-Id: I6816ce939eeabdf828039f59f4f29260eb1ac8da
Reviewed-on: https://go-review.googlesource.com/c/go/+/344449
Trust: Joel Sing <joel@sing.id.au>
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Reviewed-by: Michael Munday <mike.munday@lowrisc.org>
Add more error tests for riscv64 assembly. Also avoid a panic when one of
these error conditions is hit.
Change-Id: If5d913894facbd67f7d014eab745da77c8c66ab0
Reviewed-on: https://go-review.googlesource.com/c/go/+/344228
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Reviewed-by: Meng Zhuo <mzh@golangcn.org>
Otherwise the modifications of transformAssign are dropped on the floor.
Change-Id: Id40782564952ed53f9ade1dba4e85290c8522abc
Reviewed-on: https://go-review.googlesource.com/c/go/+/346590
Trust: Keith Randall <khr@golang.org>
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Missing case types.TUNSAFEPTR in parameterizedBy().
Also realized there was the same missing case in the type substituter
(*Tsubster).Typ().
Fixes#48103
Change-Id: If71f1a6ef80932f0e2120d4c18b39a30189fd8fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/346669
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
CL 309831 fixed importing of method expressions, by re-using the same
code already have for ODOTMETH. But that code does not work with
embedded field.
To fix this, we need to calculate all methods of the receiver base type
of method expression, before looking up the selection.
Fixes#48088
Change-Id: Ia244d36a3ed0f989735eb57becdfa70a81912f57
Reviewed-on: https://go-review.googlesource.com/c/go/+/346489
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This is a port of CL 346294 to go/types.
Change-Id: Ib70541a92e352c8df8123c8b82bb4eeedce3b89f
Reviewed-on: https://go-review.googlesource.com/c/go/+/346560
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This is a port of CL 346291 to go/types.
Change-Id: I8f864aca5cdb4037bc27a81cde1597430b9a48db
Reviewed-on: https://go-review.googlesource.com/c/go/+/346559
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This is a port of CL 346009 to go/types. An unnecessary break statement
was removed from both the port and types2.
Change-Id: I2cc1328a61100d4b01a2d26ac7bac9044440d579
Reviewed-on: https://go-review.googlesource.com/c/go/+/346558
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This is a port of CL 345929 to go/types. It is also a step toward making
instantiation concurrency-safe.
Also fix some whitespace in instantiate.go.
Updates #47910
Change-Id: Icdeb227cb83eee15da6db90daab294c8c55db601
Reviewed-on: https://go-review.googlesource.com/c/go/+/346557
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This is a port of CL 345791 to go/types.
Change-Id: I673c22ad8b668f07aae4117555b1c0efb273fb78
Reviewed-on: https://go-review.googlesource.com/c/go/+/346556
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This is a port of CL 345891 to go/types.
Change-Id: I5abcb9c9c5110923a743f0c47d9b34b2baabab68
Reviewed-on: https://go-review.googlesource.com/c/go/+/346555
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This is a port of CL 345890 to go/types.
Change-Id: I98162deaf044b2194b05dc51e6948e227216fc4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/346554
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This is a port of CL 345472 to go/types.
Change-Id: I0e2a88909ecebe9dea3325244153f5c74e4c3ce7
Reviewed-on: https://go-review.googlesource.com/c/go/+/346553
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This is a port of CL 345471 to go/types.
Change-Id: Icad5fb8b3b4375182f420a51c80607b88696561e
Reviewed-on: https://go-review.googlesource.com/c/go/+/346552
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This is a port of CL 345177 to go/types.
Change-Id: I79fcfbf5b28e9a7a2e66c81bc831e164a8da8bbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/346551
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This is a port of CL 345176 to go/types, though not all TODOs were
present in go/types.
A TODO that still needs to be resolved was added back to types2.
Change-Id: Icf79483c92d0bc1248de772c7044620f0f0a5c58
Reviewed-on: https://go-review.googlesource.com/c/go/+/346550
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type A [0]int
var a A
x := a[i]
Use the zero value for x instead of the "impossible" value. That lets
us at least compile code like this with -B, even though it can't
possibly run correctly.
Fixes#48092
Change-Id: Idad5cfab49e05f375c069b05addceed68a15299f
Reviewed-on: https://go-review.googlesource.com/c/go/+/346589
Trust: Keith Randall <khr@golang.org>
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Use the position of the actual conversion operation instead of base.Pos.
Fixes#47880
Change-Id: I56adc134e09cb7fd625adc0a847c1a6b3e254b1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/345095
Trust: Keith Randall <khr@golang.org>
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These helper functions are no longer necessary, now that type parameters
are enabled; we can access type parameters directly.
When considering the existence or non-existence of type parameters, we
can either check whether node.TParams != nil, or whether
node.TParams.NumFields() > 0. The heuristic I'm using for deciding
between these checks is as follows:
- For data access, just check node.TParams != nil.
- For producing errors if type parameters exist, check NumFields() > 0.
Change-Id: I6597536898e975564e9e8bf6a3a91bc798e0f110
Reviewed-on: https://go-review.googlesource.com/c/go/+/346549
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This is a port of CL 344873 to go/types.
Change-Id: Iad41d6de166214178adf2123ac05023895f5208b
Reviewed-on: https://go-review.googlesource.com/c/go/+/346435
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This is a port of CL 344872 to go/types.
Change-Id: Id794f1fc3b86779ee32dbe5e656ffc747d44c3e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/346434
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This is a port of CL 344871 to go/types. Unlike the compiler, go/parser
is already always producing 1.18 syntax, so the effect of this CL is to
add some additional errors when Config.GoVersion is below 1.18.
This is a non-trivial port, both due to different error reporting APIs
and due to interacting with declaration syntax nodes, which differ
between go/ast and cmd/compile/internal/syntax.
Change-Id: I8003a014e6eec5e554c24e9a6cfc0548ec534834
Reviewed-on: https://go-review.googlesource.com/c/go/+/346433
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This is a port of CL 342690 to go/types.
Change-Id: I27dcde237e400a84c3394a3579805014777830bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/346432
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When the Defn field of a name node is not an ONAME (for a closure
variable), then it points to a body node of the same function/closure.
Therefore, we should not attempt to substitute it at the time we are
substituting the local variables. Instead, we remember a mapping from the
Defn node to the nodes that reference it, and update the Defn fields of
the copied name nodes at the time that we create the new copy of the
Defn node.
Added some comments to the Defn field of ir.Name.
Moved the Defn (and Outer code, for consistency) from namelist() to
localvar(), since Defn needs to updated for all local variables, not
just those in a closure. Fixed case where .Defn was not being set
properly in noder2 for type switches. Fixed another case where the Defn
field had to be updated during transformSelect() because the Defn node
was being completely changed to a new node.
Fixed some spacing in typeswitch2.go
Fixes#47676Fixes#48016
Change-Id: Iae70dd76575f4a647c1db79e1eba9bbe44bfc226
Reviewed-on: https://go-review.googlesource.com/c/go/+/346290
Trust: Dan Scales <danscales@google.com>
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These rules were likely only used in the removed amd64p32 port.
Passes toolstash -cmp.
Change-Id: Ie626d1021bade7f7571d1bd5271fbe8676bb295e
Reviewed-on: https://go-review.googlesource.com/c/go/+/346509
Trust: Martin Möhrmann <martin@golang.org>
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Replace MOVOstorezero with new MOVOstoreconst.
MOVOstoreconst has similar address folding rules then
other MOVstoreconst operations but only supports zero
as store value. Currently only MOVO stores with zero
values are generated. Using MOVOstoreconst with
SymValAndOff aux has the advantage that we can just
add one more MOVstoreconst variant to the existing rules.
The main effect of this CL is converting 16 byte zeroing
of a value on the stack from LEAQ+MOVUPS to just MOVUPS
which reduces binary size.
old:
LEAQ 0x20(SP), DX
MOVUPS X15, 0(DX)
new:
MOVUPS X15, 0x20(SP)
file before after Δ %
addr2line 3661568 3657472 -4096 -0.112%
asm 4566432 4562336 -4096 -0.090%
cgo 4305456 4301360 -4096 -0.095%
compile 22878528 22874512 -4016 -0.018%
cover 4517952 4513856 -4096 -0.091%
link 6287248 6283152 -4096 -0.065%
nm 3640768 3636672 -4096 -0.113%
objdump 4010592 4006496 -4096 -0.102%
pack 2188224 2184128 -4096 -0.187%
pprof 13429504 13421312 -8192 -0.061%
trace 10143968 10135776 -8192 -0.081%
vet 6868864 6864768 -4096 -0.060%
Change-Id: I08f5dd5ab9251448a4572d3ddd1e0c8cd417f5e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/346249
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Trust: Martin Möhrmann <martin@golang.org>
Now that unsafe.Sizeof and friends can operate on generic parameters,
and evaluate to non-constants, we need to export/import them correctly.
Fixes#48094
Change-Id: If3ebf77255385cd5462e13fb7ced8b157ba3cf5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/346469
Trust: Keith Randall <khr@golang.org>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
The existing approach (alias name stands for generic type name)
is an exception: it's the only place where a generic type could
be used without explicit instantiation. The correct solution is
currently under discussion (see proposal issue #46477).
This CL requires that the RHS of an alias type declaration be
an instantiated non-generic type. If #46477 is accepted, the
implementation will require proper representation of alias
types.
Change-Id: Ie85b923213a64f39837e56e38e14757458272b93
Reviewed-on: https://go-review.googlesource.com/c/go/+/346294
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
The value types in type assertions and type switches cannot be
constraint types (if there are, an error was reported earlier),
so there is no need to check again that they are not constraint
types.
This permits merging the ordinaryType call with varType, which
is the only place where it's needed.
Change-Id: I44a852377b3dddf53692f764e588801fb3d3c0a8
Reviewed-on: https://go-review.googlesource.com/c/go/+/346291
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL makes two changes to how unified IR emits method wrappers:
1. It no longer emits wrappers for defined types' underlying
types. Previously, a declaration like `type T struct { U }` would emit
wrappers for both `T` and `struct { U }`. Now they're only emitted for
`T`.
2. It emits method value wrappers only when OMETHVALUE nodes are
actually created, like how -G=0 works. Method values are relatively
rare, aren't needed for runtime type descriptors (unlike method
expression wrappers), and large projects end up spending a non-trivial
amount of time compiling these unneeded wrappers.
Change-Id: I21da97df3132ec12cc67debf62b5b2d282f481cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/346230
Trust: Matthew Dempsky <mdempsky@google.com>
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It seems everything is in place for these tests to pass on solaris and
illumos, so enable them.
Fixes#7399
Change-Id: If6defb651ef9c5059c1aeccbc4fc13a12a86b682
Reviewed-on: https://go-review.googlesource.com/c/go/+/346149
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Damien Neil <dneil@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
This error reporting code path did not have test coverage, and panics in
1.17 (filed as #48082).
Add a test that would have reproduced the panic, for both go/types and
cmd/compile/internal/types2.
Change-Id: Icd5f54f8407e4ab57d432f44a129ecf6b2755feb
Reviewed-on: https://go-review.googlesource.com/c/go/+/346309
Trust: Robert Findley <rfindley@google.com>
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TryBot-Result: Go Bot <gobot@golang.org>
When using a typeWriter for debugging/error message type strings,
it shouldn't crash in the presence of type-checker internal bugs.
But when a typeHasher is used, we don't want to silently ignore
errors.
Introduce an error method that panics in type hashing mode but
prints an error value otherwise.
Also fixed an incorrect 'if' statement in tParamList.
Change-Id: I26c8b8e0b14396e91ad71bf903e36ce1ca55839e
Reviewed-on: https://go-review.googlesource.com/c/go/+/346009
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Instead, keep track of hashing mode with a typeWriter field.
Introduce a new constructor (newTypeHasher) to set the mode.
Change-Id: Ie69cc0382532c75973794326be15c884b7fdcb76
Reviewed-on: https://go-review.googlesource.com/c/go/+/345929
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Rename instanceHashing accordingly.
Eventually, this will make it possible to use typeHash to detect
multiple identical types in type switch cases and other places.
Also fix some bugs: When creating a type hash, the name of function
parameters must be ignored because they don't matter for type
identity. And when printing a type name, don't assume its type
is a *Named type; it could be a *Basic type as well.
Finally, use a correctly qualified type string when reporting
a duplicate type error in a type switch case rather than the
(debugging) type string.
Change-Id: Ida3873f6259b51847843b0e2d7e3aa2fcdc3a0c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/345791
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Use varType instead of instantiatedOperand to check if the type of a method expressions is instantiated.
This removes the last usage of instantiatedOperand, so it can be deleted.
Fixes#48048
Change-Id: I2b219dafe2bba3603100bb8f25b8ff4e8ef53841
Reviewed-on: https://go-review.googlesource.com/c/go/+/345970
Trust: Robert Griesemer <gri@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
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We were using the type from the wrong Node (the partially filled-in
FUNCINST) rather than the original function node - which is pointed to
by the OFUNCINST)) to set the final fully-substituted type of the
OFUNCINST. So fixed the node reference. Also, added check so we don't do
any work at all if the OFUNCINST already has all type args filled in.
Added few extra cases to the test file issue48030.go, to cover
fully-specified type args, partially inferred type args, and fully
inferred type args.
Fixes#48030
Change-Id: If9e4f2e0514d68b9d241f30c423259133932b25b
Reviewed-on: https://go-review.googlesource.com/c/go/+/346229
Trust: Dan Scales <danscales@google.com>
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Since we know whether we are printing a type string used as
instance hash, don't print instance markers, so that we don't
need to remove them afterwards either.
Change-Id: Ib01627b6da989ef89d51e734810a3377eb466925
Reviewed-on: https://go-review.googlesource.com/c/go/+/345891
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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>
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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
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Replace the last remaining use with a reference to #48024.
Change-Id: I699711b4e42abe9c6d3512c28d2ee81a84e3263a
Reviewed-on: https://go-review.googlesource.com/c/go/+/345392
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
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>
Trust: Keith Randall <khr@golang.org>
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