This avoids redundant creation and uniquing of types in the case where
we only have a canonical name. Since the uniquing changes the type
graph this introduced the possibility for use-after-free if
IRGenDebugInfoImpl held on to a direct (non-tracking) DIType *.
rdar://146327709
when creating the members of a struct, to avoid problems when the type
graph changes due to type nodes being uniqued. It's not clear this can
actually happen, but it helps ruling this out as a failure cause.
Remove a static variable that caches pointer value from ASTContext that
will become invalid if the same process is re-used for compilation using
a second ASTContext. This configuration is used under
`-enable-deterministic-check` option for output detertiminism checking.
rdar://147438789
DBuilder::replaceTemporary() can return a different pointer. In
practice this only happens when temporary and replacement are uniqued,
so that's probably how we got away with this in the past.
`-Xfrontend -enable-cond-fail-message-annotation`
LLVM IR produced by the Swift compiler will add the `annotation`
metadata attribute to the branch instruction generated for cond_fail
builtins.
This reverts the problematic parts of
fcbebc51c7 which had caused a lot of
unintended fallout, while preserving the actual feature supported by
the patch.
Before that patch (fcbeb), and after this one, we don't emit members
of specialized bound generic types, because these can be reconstructed
by substituting the "template parameters" in the unspecialized
type. This patch carves out an exception for inline arrays, because
DWARF has special support for arrays, which allows debuggers to reason
about them without needing special support.
rdar://146326633
The Protocol field isn't really necessary, because the conformance
stores the protocol. But we do need the substituted subject type
of the requirement, just temporarily, until an abstract conformance
stores its own subject type too.
The "abstract conformance is just a ProtocolDecl" assumption is pretty
fundamental here, so we have to fudge a bit at the API boundary for now.
Eventually, LocalTypeDataKind should just contain a ProtocolConformanceRef
instead of duplicating the representation, however this would require
fixing various calls to LocalTypeDataKind::forAbstractProtocolWitnessTable()
which pass in a ProtocolDecl to pass in a ProtocolConformanceRef instead.
* [Concurrency] Detect non-default impls of isIsolatingCurrentContext
* [Concurrency] No need for trailing info about isIsolating... in conformance
* Apply changes from review
Added an `-executor-factory` argument to the compiler to let you safely
specify the executors you wish to use (by naming a type that returns
them).
Also added some tests of the new functionality.
rdar://141348916
The NormalProtocolConformance APIs for checking for an explicitly-written
isolation on a conformance were easy to get to, and the real semantic
API was buried in the type checker, leading to some unprincipled
checking. Instead, create a central ProtocolConformance::getIsolation()
to get the (semantic) actor isolation, and let that be the only place
that will access the explicitly-written global actor isolation for a
conformance. Update all call sites appropriately.
Instead of using the `isolated P` syntax, switch to specifying the
global actor type directly, e.g.,
class MyClass: @MainActor MyProto { ... }
No functionality change at this point
for recursive classes. This is achieved by treating types created with
DebugTypeInfo::createFrowardDecl() as unconditional forward
declarations when emitting debug info instead of applying a heuristic
to determine this.
rdar://146688269
Imported C++ template specializations receive identifiers that contain
their type signature; e.g., `X<Y, Z>`. Since this means the identifier
contains non-identifier characters, the new behavior was trying to
escape them with backticks in ASTPrinter, ASTMangler, and the runtime
metadata. This pulls that back to preserve the current behavior for
specifically those types.
Raw identifiers are backtick-delimited identifiers that can contain any
non-identifier character other than the backtick itself, CR, LF, or other
non-printable ASCII code units, and which are also not composed entirely
of operator characters.
When creating a specialized witness table, we need to get the right specialized conformance.
In IRGen don't emit associated conformance witness table entries if the protocol is not a class protocol.
In this case the associated type can never be used to create an existential. Therefore such a witness table entry is never used at runtime in embedded swift.
Fixes a compiler crash
rdar://146448091
Extend the metadata representation of protocol conformance descriptors
to include information about the global actor to which the conformance is
isolated (when there is one), as well as the conformance of that type to
the GlobalActor protocol. Emit this metadata whenever a conformance is
isolated.
When performing a conforms-to-protocol check at runtime, check whether
the conformance that was found is isolated. If so, extract the serial
executor for the global actor and check whether we are running on that
executor. If not, the conformance fails.
