This CL adds a simple framework for augmenting the current export data
format by writing out additional data *after* the existing data, with
an extra header before it that current readers ignore.
In particular, this is used by unified IR to be able to experiment and
iterate on export data designs without having to keep the
go/internal/gcimporter and x/tools/go/gcexportdata importers in
sync. Instead, they simply continue reading the existing data written
out by typecheck/iexport.go.
Change-Id: I883211c2892e2c7dec758b85ff6bc31b244440a0
Reviewed-on: https://go-review.googlesource.com/c/go/+/327169
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Always enable regabig on AMD64, which enables the G register and
the X15 zero register. Remove the fallback path.
Also remove the regabig GOEXPERIMENT. On AMD64 it is always
enabled (this CL). Other architectures already have a G register,
except for 386, where there are too few registers and it is
unlikely that we will reserve one. (If we really do, we can just
add a new experiment).
Change-Id: I229cac0060f48fe58c9fdaabd38d6fa16b8a0855
Reviewed-on: https://go-review.googlesource.com/c/go/+/327272
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Always enable regabiwrappers on AMD64. GOEXPERIMENT=none will not
turn it off.
Change-Id: I0aa208c02157661ac3676b753bcfbfa050b99e41
Reviewed-on: https://go-review.googlesource.com/c/go/+/327271
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Now that deferred functions are always argumentless and defer
records are no longer with arguments, defer record can be fixed
size (just the _defer struct). This allows us to simplify the
allocation of defer records, specifically, remove the defer
classes and the pools of different sized defers.
Change-Id: Icc4b16afc23b38262ca9dd1f7369ad40874cf701
Reviewed-on: https://go-review.googlesource.com/c/go/+/326062
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newproc was not allowed to split stack because it had a special
stack layout, where the go'd function's arguments were passed on
stack but not included in the signature (therefore the stack map).
Now it no longer has argument, so it does not need to be nosplit.
Change-Id: I6f39730fb1595c4b0438c74118fef418fe1c082b
Reviewed-on: https://go-review.googlesource.com/c/go/+/325919
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This CL fixes reflectdata.methodWrapper to compile wrapper functions
for method expressions involving imported, instantiated interface
types. CL 322193 fixed a similar issue for generating wrappers for
imported, instantiated concrete types, but missed this case.
This is necessary to fix CL 326169's test case 10. However, that test
case is not included currently, because -G=3 mode crashes on method
expressions involving *any* instantiated interface type. Adding a test
will have to wait until either this issue is fixed in -G=3 mode, or
unified IR is merged.
Updates #46704.
Change-Id: Ib02d3c20e7c69d16288f1286cd1c98e7cbbba114
Reviewed-on: https://go-review.googlesource.com/c/go/+/327055
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The unified IR importer needs access to the *types2.Checker instance
to lazily construct objects and types. Eventually, maybe the
types2.Importer API can be extended to add the Checker as another
parameter (or more likely something like an ImportConfig struct), but
right now we can handle this ourselves as long as we forgo the
types2.(*Config).Check convenience wrapper.
Updates #46449.
Change-Id: I89c41d5d47c224a58841247cd236cd9f701a23a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/327053
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Unified IR currently works by hoisting local type definitions to
package scope, which requires giving them a unique name. Its current
solution is to directly embed the ·N suffix in Sym.Name, rather than
set Type.Vargen. This CL extends types/fmt.go to support trimming this
suffix again when appropriate.
Longer term, I want to revisit this hack, but this seemed like the
least invasive solution while also handling generics and local types.
Change-Id: If99fcdcc1e19e37d5887de3b021c256a3fe46b98
Reviewed-on: https://go-review.googlesource.com/c/go/+/327052
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The unified IR importer requires a way to set symbol indices for
imported types, so provide an exported API for this.
Change-Id: I2f088628f56d5b9f1097196dc1aa23f0a8b8d496
Reviewed-on: https://go-review.googlesource.com/c/go/+/327050
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This CL adds a variant of ir.TypeNode that allows specifying position
information. This shouldn't normally be needed/used, but it's
occasionally helpful for writing code that passes toolstash -cmp.
Change-Id: I2be5da0339fd1ec2bee01d6c5310bd2ef58c46b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/327049
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Now that deferred functions are always argumentless, we don't
need the metadata for the frame size, number of arguments, and
the information about each argument.
Change-Id: I99e75248a22bda6efbdf2012a2f35beca4c18fd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/326061
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Now it is only used to save the deferred the function (closure),
which must be a function type. Simplify the code.
Change-Id: Id4b8f2760fbf39a95883df2327f97378e7edab88
Reviewed-on: https://go-review.googlesource.com/c/go/+/326060
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As deferred function now always has zero arguments, _defer.siz is
always 0 and can be removed.
Change-Id: Ibb89f65b2f9d2ba4aeabe50438cc3d4b6a88320b
Reviewed-on: https://go-review.googlesource.com/c/go/+/325921
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deferproc was not allowed to split stack because it had a special
stack layout, where the go'd function's arguments were passed on
stack but not included in the signature (therefore the stack map).
Now it no longer has argument, so it does not need to be nosplit.
Change-Id: I6d4b5302bd6fea6642bb4202984d86e3ebbc9054
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Previously it takes a *funcval, as it can be any function types.
Now it must be func(). Make it so.
Change-Id: I04273047b024386f55dbbd5fbda4767cbee7ac93
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newproc/deferproc takes a siz argument for the go'd/deferred
function's argument size. Now it is always zero. Remove the
argument.
Change-Id: If1bb8d427e34015ccec0ba10dbccaae96757fa8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/325917
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tracebackdefers is used for scanning/copying deferred functions'
arguments. Now that deferred functions are always argumentless,
it does nothing. Remove.
Change-Id: I55bedabe5584ea41a12cdb03d55ec9692a5aacd9
Reviewed-on: https://go-review.googlesource.com/c/go/+/325916
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Now that defer/go wrapping is used, deferred/go'd functions are
always argumentless. Remove the code handling arguments.
This CL is mostly removing the fallback code path. There are more
cleanups to be done, in later CLs.
Change-Id: I87bfd3fb2d759fbeb6487b8125c0f6992863d6e5
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Now that defer wrapping is used, deferred function is always
argumentless. Remove the code handling arguments.
This CL is mostly removing the fallback code path. There are more
cleanups to be done, in later CLs.
Change-Id: If6c729d3055c7a507cb1f1a000f5bbd3ad7ff235
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Hardwire regabidefers to true. Remove it from GOEXPERIMENTs.
Fallback paths are not cleaned up in this CL. That will be done
in later CLs.
Change-Id: Iec1112a1e55d5f6ef70232a5ff6e702f649071c4
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Rerun the generator. exp_regabi_{on,off}.go are gone, as "regabi"
itself is not a goexperiment that we test at run time (the
sub-experiments are).
Change-Id: Ic1f31b4ef2769a143f768e1b3dc7221041aafca9
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markInlBody/markObject/markType don't fully work as they stand for
generic functions/methods, since markInlBody can't understand method
calls on generic types. Those method calls will be resolved to concrete
methods in a full instantiation, but markInlBody on a generic
function/method can't understand those method calls. So, we won't
necessarily cause export of the appropriate extra method/function bodies
needed for inlining in an instantiated function.
One way to do this is just to make sure that we call markType
on all generic types that are exported (whether explicitly exported via
a capitalized name or unexported types that are referenced by a generic
function body). That way, we will call markInlBody on all possible
generic methods that might be called.
Fixes the current problem for i386-softfloat builds on dev.typeparams.
Change-Id: I2d3625d26042296731bd3c44ba1938aa194d527e
Reviewed-on: https://go-review.googlesource.com/c/go/+/325329
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When converting a variable of generic type to an interface, use the
entry in the dictionary for the type field instead of using the
compile-time type (which we only have when fully stenciling).
Note: this isn't all the conversions. Conversions often get processed
in the ir.OCALL case. Those aren't handled yet.
Change-Id: I9a6a4c572e3c54a8e8efad98365184dbb94c4487
Reviewed-on: https://go-review.googlesource.com/c/go/+/325330
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When converting from a type param to an interface, allow it if
the type bound implements that interface.
Query: some conversions go through this path, some use another path?
The test does
var i interface{foo()int} = x
but
i := (interface{foo()int})(x)
works at tip.
Change-Id: I84d497e5228c0e1d1c9d76ffebaedce09dc45e8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/325409
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better than Kind() == types.TTYPEPARAM
Change-Id: I4f35a177cd0cda3be615a92b7b2af1b5a60a3bbc
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The instantiated functions are created in the source package of the
generic function, so all lookups of symbols should be relative to that
package, so all symbols are consistently in the source package.
Fixes#46575
Change-Id: Iba67b2ba8014a630c5d4e032c0f2f2fbaaedce65
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This is a port of CL 322070 to go/types, adjusted for the different
error reporting API.
Change-Id: I75eafe015b5b00554116527ea021e7a5f9e0343b
Reviewed-on: https://go-review.googlesource.com/c/go/+/324759
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This is a straightforward port of CL 321850 to go/types.
Change-Id: I719c19b8839390fdfa961255c6f1e79561cda6e6
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This is a port of CL 321751 to go/types, adjusted to use token.Pos, and
to exclude a missing position from a panic message (an unresolved
comment on the original CL).
Change-Id: I5814067aecb67aca9d73f2093fb6004b769924f3
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This is a port of CL 309832 to go/types, adjusted to not export the new
API and to amend TestSizeof.
Change-Id: I67efd3ba9b921c8431528eba1cd88ec1f41898bb
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This is a port of CL 321590 to go/types. Specifically, the same checker
methods were moved.
Change-Id: If4522d316f29c6b6f887580aa037e6b6dedbb6ac
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This is true since CL 315274.
Also adjust the P-256 note, since Add, Double, and IsOnCurve use the
generic, non-constant-time implementation.
Change-Id: I4b3b340f65bce91dcca30bcf86456cc8ce4dd4bb
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The package-level documentation on fmt previously had only two formal
sections, for printing and scanning. Because of this, the section on
printing was very long, including some pseudo-sections describing
particular features. This feature makes those pseudo-sections into
proper sections, both to improve readability and so that those sections
have hyperlinks on documentation sites.
Fixes#46522
Change-Id: I38b7bc3447610faca446051da235edcbbd063f61
Reviewed-on: https://go-review.googlesource.com/c/go/+/324349
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For #46594.
Change-Id: I53776cbdc1b8f6da511abe2c6659a7313d7a163a
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This CL reorganizes export writing in preparation for unified IR:
1. It moves dumpexport into noder as noder.WriteExports so that it can
be extended to include unified IR's export data.
2. Adds an "extensions" flag to typecheck.WriteExports to control
whether the compiler-only extension data (e.g., function bodies and
linker symbol info) is included in the exports.
3. It moves the gc.exporter type into typecheck and renames it to
"crawler". The type originated as the implementation of
the (pre-iexport) binary exporter, but since the removal of bexport
it's been relegated to simply crawling the exported functions/bodies
graph to identify which inline bodies need to be included.
4. It changes inline.Inline_Flood into the method crawler.markInlBody.
Inline_Flood doesn't actually have anything to do with the rest of
inlining; its current name and location are just historical quirks.
Passes toolstash -cmp.
Change-Id: I6445e2de9d3ce500a3aded5a8e20b09f46d23dbc
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This CL restructures the gcimports importer to mmap the export data
into memory as a string, and then pass that same string to both the
typecheck and types2 importers.
This is primarily motivated by preparation for unified IR; but it
should also improve performance (fewer string copies) and reduces
divergance between the two importers.
Passes toolstash -cmp.
Change-Id: I397f720693e9e6360bfcb5acb12609ab339d251f
Reviewed-on: https://go-review.googlesource.com/c/go/+/325210
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The word "specifier" is used once only here and technically not defined.
Change-Id: Ifc9f0582f4eb3c3011ba60d8008234de511d4be6
Reviewed-on: https://go-review.googlesource.com/c/go/+/323730
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Replace "reserved word" by "keyword" as the latter is the official term.
Change-Id: I9f269759b872026034a9f47e4a761cff2d348ca0
Reviewed-on: https://go-review.googlesource.com/c/go/+/323729
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`io.ReadAll` dynamically reallocates byte slice because it doesn't know
its size in advance. We don't need to read an entire file into memory
and therefore may use `bufio.Reader` to read its contents.
Fixes#46564
Change-Id: Id504b1512662b6dea4775d523455896fa4162ab3
Reviewed-on: https://go-review.googlesource.com/c/go/+/325429
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The test was using the wrong column numbers, and was erroneously
passing because there happened to be line numbers that matched those
column numbers. Change the test harness to require the expected line
number for the ERROR HERE regexp case, so that this doesn't happen again.
Also rename a couple of variables in the test to avoid useless
redeclaration errors.
Fixes#46534
Change-Id: I2fcbf5e379c346de5346035c73d174a3980c0927
Reviewed-on: https://go-review.googlesource.com/c/go/+/324970
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types2 correctly distinguishes variable assignment from use even
within function literals. Whatever the outcome of #3059, the test
cases in runtime/race need to be fixed to accomodate that.
Change-Id: Ibe3547f07b681ff41225caabaf050872a48c98d1
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This is consistent with Named.TArgs.
This is a straight-forward port of https://golang.org/cl/321289
plus the necessary compiler noder changes.
Change-Id: I50791e5abe0d7f294293bed65cebc8dde8bf8c06
Reviewed-on: https://go-review.googlesource.com/c/go/+/325010
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
An index expression followed by an opening "{" may indicate
a composite literal but only if the index expression can be
a type. Exclude cases where the index expression cannot be
a type (e.g. s[0], a[i+j], etc.).
This leads to a better error message in code that is erroneous.
Fixes#46558.
Change-Id: Ida9291ca30683c211812dfb95abe4969f44c474f
Reviewed-on: https://go-review.googlesource.com/c/go/+/325009
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
When constructing struct literals, importers need a way to specify
precisely which field to initialize without worrying about visibility
or those fields being blank. (A blank field doesn't actually need to
be initialized, but the expression needs to be evaluated still, and
with the right order-of-operations.)
This CL changes StructKeyExpr's Field field to point directly to the
corresponding types.Field, rather than merely holding a copy of its
Sym and Offset. This is akin to past changes to add
SelectorExpr.Selection.
Change-Id: I95b72b1788f73206fcebc22b456cf6b1186db6a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/325031
Trust: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
There's no outer function in these cases, so we won't be reading
the dictionary as a subdictionary from the outer scope's dictionary.
It will always be a compile-time constant.
Change-Id: I754b126652a6ffb62255734d53fcec29d77cfa9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/324949
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
