When compiling runtime, we don't allow closures to escape,
because we don't want (implicit) allocations to occur when it is
not okay to allocate (e.g. in the allocator itself). However, for
go statement, it already allocates a new goroutine anyway. It is
okay to allocate the closure. Allow it.
Also include the closure's name when reporting error.
Updates #40724.
Change-Id: Id7574ed17cc27709609a059c4eaa67ba1c4436dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/325109
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Deal with export/import of recursive generic types. This includes
typeparams which have bounds that reference the typeparam.
There are three main changes:
- Change export/import of typeparams to have an implicit "declaration"
(doDecl). We need to do a declaration of typeparams (via the
typeparam's package and unique name), because it may be referenced
within its bound during its own definition.
- We delay most of the processing of the Instantiate call until we
finish the creation of the top-most type (similar to the way we
delay CheckSize). This is because we can't do the full instantiation
properly until the base type is fully defined (with methods). The
functions delayDoInst() and resumeDoInst() delay and resume the
processing of the instantiations.
- To do the full needed type substitutions for type instantiations
during import, I had to separate out the type subster in stencil.go
and move it to subr.go in the typecheck package. The subster in
stencil.go now does node substitution and makes use of the type
subster to do type substitutions.
Notable other changes:
- In types/builtins.go, put the newly defined typeparam for a union type
(related to use of real/imag, etc.) in the current package, rather
than the builtin package, so exports/imports work properly.
- In types2, allowed NewTypeParam() to be called with a nil bound, and
allow setting the bound later. (Needed to import a typeparam whose
bound refers to the typeparam itself.)
- During import of typeparams in types2 (importer/import.go), we need
to keep an index of the typeparams by their package and unique name
(with id). Use a new map typParamIndex[] for that. Again, this is
needed to deal with typeparams whose bounds refer to the typeparam
itself.
- Added several new tests absdiffimp.go and orderedmapsimp.go. Some of
the orderemapsimp tests are commented out for now, because there are
some issues with closures inside instantiations (relating to unexported
names of closure structs).
- Renamed some typeparams in test value.go to make them all T (to make
typeparam uniqueness is working fine).
Change-Id: Ib47ed9471c19ee8e9fbb34e8506907dad3021e5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/323029
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This is a port of CL 321589 to go/types. Specifically, the same checker
methods were moved.
Change-Id: If07d96faa77d2f9409d8895f970149c42cbfe440
Reviewed-on: https://go-review.googlesource.com/c/go/+/324753
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This is a port of CL 321549 to go/types. Specifically, the same checker
methods were moved.
Change-Id: I491a8c5a985d71ebb23e4b34541a557da0af0cfc
Reviewed-on: https://go-review.googlesource.com/c/go/+/324752
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This is a port of CL 321232 to go/types, adjusted to add a missing
comment and to remove optional support for method type params.
Fixes#46275
Change-Id: I63fcbb669e7607876a888fca89b9064568805448
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This is a port of CL 320489 to go/types, adjusted to be consistent about
named/unnamed parameters. TestEvalPos was failing without this addition.
For #46209
Change-Id: Icdf86e84ebce8ccdb7846a63b5605e360e2b8781
Reviewed-on: https://go-review.googlesource.com/c/go/+/324733
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This is a straightforward port of CL 320490 to go/types.
Change-Id: I763c806c777f926a563d8f9384764e5b3f7f083c
Reviewed-on: https://go-review.googlesource.com/c/go/+/324732
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This is a straightforward port of CL 320150 to go/types.
Fixes#46167
Change-Id: Id1845046f598ac4fefd68cda6a5a03b7a5fc5a4a
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This is a port of CL 315769 to go/types, adjusted for the additional
testPkg indirection in go/types on top of testFiles, and to remove the
colDelta argument.
Change-Id: Ieb722d77866313a01645aeec49912c16cb475462
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This is a straightforward port of CL 314773 to go/types.
Change-Id: If9e2d6d99790d694615389acbe6ccb3c8c0bd1da
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This is consistent with Named.TArgs.
Change-Id: Ib25f7ac5b7242e169c8c1701dfa407f763f26125
Reviewed-on: https://go-review.googlesource.com/c/go/+/321289
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Incrementing type parameter subscripts for each type checking pass is
distracting for an interactive program where packages are type-checked
on each keystroke.
We should perhaps hide the type parameter ID altogether, but for now at
least add a layer of indirection so that type parameters for a single
type-checked package can be stabilized.
This change should have no effect on non-generic type checking.
For #46003
Change-Id: I60d747e0a2bfb68e7d64e897eac23f609a2a4429
Reviewed-on: https://go-review.googlesource.com/c/go/+/321269
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This CL adds three new functions to the types2 API to support lazy
import resolution:
1. A new Scope.InsertLazy method to allow recording that Objects exist
in a particular Scope (in particular, package scopes) without having
to yet fully construct those objects. Instead, types2 will call the
provided `resolve` function if/when the object is actually needed.
2. Similarly, a new NewTypeNameLazy function to create TypeName
objects without yet instantiating their underlying Named
instance.
3. Finally, an InstantiateLazy method, that allows creating type
instances without requiring any of the types to be expanded right
away. Importantly, this requires providing a types2.Checker argument
to handle recursive types correctly.
The APIs as-is are a bit clumsy (esp. NewTypeNameLazy), but seem to
work well for cmd/compile's needs. In particular, they simplify some
of the complexities of handling recursive type definitions within the
importer.
Also, the current prototype is a bit fragile. It uses sync.Once to
manage concurrent lazy resolution, which is frustrating to debug in
the presence of reentrancy issues. It also means the importer needs to
deal with concurrency as well. These aren't issues for types2 though
as cmd/compile only walks the type-checked AST sequentially.
Finally, it looks like some of the details of lazy type names are
similar to the lazy "instance" stuff used for generics, so maybe
there's opportunity for unifying them under a more general (but still
internal) lazy type mechanism.
I had originally intended for this CL to also update the types2
importer, but (1) it doesn't have access to the types2.Checker
instance needed to call InstantiateLazy, and (2) it creates a new
TypeName/TypeParam at each use rather than reusing them, which
evidently works with types2.Instantiate but not
types2.(*Checker).instantiate (i.e., InstantiateLazy). I spent a while
trying to fix these issues, but kept running into more subtle
issues. Instead, I've included my WIP "unified IR" CL as a followup CL
that demonstrates these Lazy methods (see noder/reader2.go).
Updates #46449.
Change-Id: I4d1e8e649f6325a11790d25fd90c39fa07c8d41d
Reviewed-on: https://go-review.googlesource.com/c/go/+/323569
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Change-Id: I4a0a093b07a287cc3a3e0ee939e7ee82d8e9b1aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/324889
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Change-Id: I8db0a797a745630ec35af3e56406fcb250ea59fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/324768
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Extend CL 310330 to ARM64, which now has clobberdead mode
implemented in the compiler.
Change-Id: I07f6951d81a0797ef7a74e48b79db5cea2bf876b
Reviewed-on: https://go-review.googlesource.com/c/go/+/324766
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For debugging.
Change-Id: I5875ccd2413b8ffd2ec97a0ace66b5cae7893b24
Reviewed-on: https://go-review.googlesource.com/c/go/+/324765
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Change-Id: I2211020141886b348cddf9e33ab31b71c8478987
Reviewed-on: https://go-review.googlesource.com/c/go/+/324811
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The test in abi_test.go relies on the compiler to generate
register-ABI calls using a magic name. As of CL 300150 the name
loses its magic. Guard it with regabiargs for the use of
register-ABI calls.
Change-Id: Ib8b3c24f71ea5161d607c9becfb3027ceee40ac1
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On Windows/ARM64, callbackasm1 calls callbackWrap via cgocallback.
cgocallback uses ABIInternal calling convention to call the
function. Pass the ABIInternal entry point to cgocallback.
Change-Id: I79d21b77525f6ac8dd50d34f4f304749419b2ad4
Reviewed-on: https://go-review.googlesource.com/c/go/+/324735
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This is CL 312669, for ARM64.
cgocallback calls cgocallbackg after switching the stack. Call it
indirectly to bypass the linker's nosplit check. In particular,
this avoids a nosplit stack overflow on Windows when register ABI
is enabled.
Change-Id: I7054a750fb0ec2579d46004f94b46b6f7b9e3a21
Reviewed-on: https://go-review.googlesource.com/c/go/+/324734
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This CL ports a few performance-critical assembly functions to use
register arguments directly. This is similar to CL 308931 and
CL 310184.
Change-Id: I6e30dfff17f76b8578ce8cfd51de21b66610fdb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/324400
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Did a mix of tilde and non-tilde usage. Tilde notation is not quite
fully functional, so no tests are currently trying to distinguish
(fail/not fail) based on tilde usage.
Change-Id: Ib50cec2fc0684f9d9f3561c889fd44c7a7af458c
Reviewed-on: https://go-review.googlesource.com/c/go/+/324572
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Currently, memequal_varlen opens up a frame and call memequal,
which then tail-calls memeqbody. This CL changes memequal_varlen
tail-calls memeqbody directly.
This makes it simpler to switch to the register ABI in the next
CL.
Change-Id: Ia1367c0abb7f4755fe736c404411793fb9e5c04f
Reviewed-on: https://go-review.googlesource.com/c/go/+/324399
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In codegen/arithmetic.go, previously there are MOVD's that match
for loads of arguments. With register ABI there are no more such
loads. Remove the MOVD matches.
Change-Id: I920ee2629c8c04d454f13a0c08e283d3528d9a64
Reviewed-on: https://go-review.googlesource.com/c/go/+/324251
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duffzero and duffcopy are commonly referenced functions. Add them
to builtin list, so they are referenced by index, not by name.
Also change gcWriteBarrier to ABIInternal, which is changed in
CL 266638.
Regenerate the file.
Change-Id: If8550d9ed300ac2be930a7c58657a9cf1933ac1d
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In TestFuncAlign we want to get the address of an assembly
function. Take the address in assembly, so we get the actual
function's address, not the wrapper's.
Change-Id: Idc1fe2c8426562c70f8f7d6e489584ef059bc556
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Eventually the flag should not be set anymore, but we set it in the
compiler until all tests have been converted.
Also, convert some more types2 tests to use the type set notation.
Change-Id: I616599a3473451ab75d67272016b2bd3de6835af
Reviewed-on: https://go-review.googlesource.com/c/go/+/324571
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Change-Id: I35f6f43db00d56847da48320308f2fcfff924738
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Change-Id: Ida3837c9cbb970a2b49cd1598c6e6e9de8aa9690
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This CL removes the // UNREVIEWED disclaimer at the top of the
file. This file is essentially a copy of its reviewed version
at src/go/internal/gcimporter/gcimporter_test.go with adjustments
to make it work for the compiler and types2. To see the changes
made with respect to the original, compare patchset 2 against
patchset 3.
Change-Id: Iaeb9a56a6a56f4c1d93e7bfedc5b1f1968fa6792
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- Eliminate the need for bottom type: This is now represented by
an empty union (denoting the set of no types).
- Clean up type set intersection and incorporate tilde information
in intersection operation and satisfaction tests.
- Minor cleanups along the way.
- Note: The intersection algorithm does not always compute the
largest possible intersection. To be addressed in a follow-up CL.
Change-Id: I7fa19df5996da36a4d8f29300d30a0aa4d8a3e5c
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A constant will have a TYPEPARAM type if it appears in a place where it
must match that typeparam type (e.g. in a binary operation with a
variable of that typeparam type). If so, then we must write out its
actual constant kind as well, so its constant val can be read in
properly during import.
Fixed some export/import tests which were casting some untyped constants
to avoid this problem.
Change-Id: I285ad8f1c8febbe526769c96e6b27acbd23050f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/324189
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
If running "go build" outputs anything, write it to the test log even
if the test succeeds. This makes it easier to diagnose errors within
the compiler by adding print statements and finding them in the test
log, even if the compiler exits successfully.
Change-Id: Id04716c4e1dcd9220c35ea0040ea516c1dd5237c
Reviewed-on: https://go-review.googlesource.com/c/go/+/324329
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This CL removes the // UNREVIEWED disclaimer at the top of the
file. This file is essentially a copy of its reviewed version
at src/go/internal/gcimporter/gcimporter.go with adjustments to
make it work for the compiler and types2. To see the changes
made with respect to the original, compare patchset 1 against
patchset 2.
Change-Id: I0fd635730fb6bdee8cef1b89154f4049a6581751
Reviewed-on: https://go-review.googlesource.com/c/go/+/324132
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For toolstash -cmp compatibility with types2, we also need to sort
fields (or at least the embedded types) *before* expanding them. This
is relevant to what position information and parameter names are used
for methods when embedded interfaces have overlapping methods.
This came up in archive/zip, which has:
type fileInfoDirEntry interface {
fs.FileInfo
fs.DirEntry
}
and both of these embedded interfaces in turn have an "IsDir() bool"
method. Traditionally, cmd/compile would keep the method from
fs.FileInfo.IsDir, but with types2 it will now keep fs.DirEntry.IsDir
instead. This doesn't affect correctness at all, but it does end up in
DWARF sometimes.
Change-Id: Iac8d6321894be335466a76b5bf8a0c1b15a3581b
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This CL removes the // UNREVIEWED disclaimer at the top of the
file. This file is essentially a copy of its reviewed version
at src/go/internal/gcimporter/exportdata.go with adjustments to
make it work for the compiler and types2. To see the changes
made with respect to the original, compare patchset 1 against
patchset 2.
Change-Id: I276d898ef238afa37ec6b9605496407df36cf7d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/324133
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This CL removes the // UNREVIEWED disclaimer at the top of the
file. This file is essentially a copy of its reviewed version
at src/go/internal/gcimporter/support.go with adjustments to
make it work for the compiler and types2. To see the changes
made with respect to the original, compare patchset 1 against
patchset 2.
Change-Id: Icb8e7e7cac02751265c1020431018293826bad18
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- We still mostly ignore the tilde information.
- More consistent naming: A Union term is the pair (type, tilde).
Rename Union.terms to Union.types; the Union.types and Union.tilde
slices make up the Union terms.
- Replace Sum.is with Union.underIs: underIs iterates through all
union terms and calls its argument function with the underlying
type of the term (and thus can ignore the tilde information).
This also eliminates the need to call under in the argument
function.
- Added Union.is for situations where we need to consider the tilde
information for each Union term.
Change-Id: I70fcf1813e072651dc0f61d52d5555642ee762fd
Reviewed-on: https://go-review.googlesource.com/c/go/+/323274
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When converting from a generic function to a concrete implementation,
add a dictionary argument to the generic function (both an actual
argument at each callsite, and a formal argument of each
implementation).
The dictionary argument comes before all other arguments (including
any receiver).
The dictionary argument is checked for validity, but is otherwise unused.
Subsequent CLs will start using the dictionary for, e.g., converting a
value of generic type to interface{}.
Import/export required adding support for LINKSYMOFFSET, which is used
by the dictionary checking code.
Change-Id: I16a7a8d23c7bd6a897e0da87c69f273be9103bd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/323272
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
mcall calls a closure (using ABIInternal) with an argument.
Update it to pass the argument in register.
Panic functions tail-call Go panic functions using ABIInternal.
Update them to pass the arguments in registers.
Race functions are called using ABIInternal from compiler-
instrumented code. Update them to receive the arguments in
registers.
Now all.bash passes with GOEXPERIMENT=regabi on ARM64 (at least on
macOS).
Change-Id: I648f6502c7eeb1422330c6c829181f12e08c7d0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/323937
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Implement register ABI for reflect.MakeFunc and method Value Call
on ARM64.
Change-Id: I5487febb9ea764af5ccf5d7c94858ab0acec7cac
Reviewed-on: https://go-review.googlesource.com/c/go/+/323936
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Implement register ABI version of reflectcall.
Now runtime tests pass with GOEXPERIMENT=regabiwrappers,regabireflect
on ARM64 (at least on macOS).
Change-Id: I2812cd96bdc13f8dc91c867e3f571921c0cdfc8a
Reviewed-on: https://go-review.googlesource.com/c/go/+/323935
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
For functions such as gcWriteBarrier and panicIndexXXX, the
compiler generates ABIInternal calls directly. And they must not
use wrappers because it follows a special calling convention or
the caller's PC is used. Mark them as ABIInternal.
Note that even though they are marked as ABIInternal, they don't
actually use the internal ABI, i.e. regabiargs is not honored for
now.
Now all.bash passes with GOEXPERIMENT=regabiwrappers (at least on
macOS).
Change-Id: I87e41964e6dc4efae03e8eb636ae9fa1d99285bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/323934
Trust: Cherry Mui <cherryyz@google.com>
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
Many compiler tests fail with -G=3 due to changes in error message format.
This commit fixes two of these tests, to ensure I am on the right track in review.
Updates #46447
Change-Id: I138956d536a1d48ca9198e6ddbfde13865bb5dd5
GitHub-Last-Rev: 0ed904b9fa
GitHub-Pull-Request: golang/go#46445
Reviewed-on: https://go-review.googlesource.com/c/go/+/323314
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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