used only for debug info and within the _Tt namespace.
The DWARF output created by swift is intentionally flat, therefore
archetypes need to be emitted with their DeclContext. While increasing the
length of the mangled names in some cases (substitutions help a lot) it
has the advantage of making names completely self-contained.
There is a lengthy thread on swift-debugger discussing this change.
Swift SVN r10348
Produce protocol descriptors when we see a protocol definition in the current module. If the protocol is @objc, go through the existing path for generating full Protocol* metadata for objc objects; otherwise, emit our layout-compatible but strong-external-linkage Swift protocol descriptor record.
Swift SVN r9867
Build a nominal type descriptor when we emit the metadata or generic metadata pattern for a nominal type, and put a reference into the formerly null slot in the struct or enum metadata. We need to make a place for them in class metadata; that'll come next.
Swift SVN r9492
Among other things this enables mangled names for tuples.
This adds a pointer to the DeclContext to SILFunction and which is used
to provide the necessary context to the Mangler.
Fixes rdar://problem/14808764 and rdar://problem/14813658.
Swift SVN r8070
To instantiate the value witness table for generic types, we were instantiating the generic type at () for all of its parameters and hoping for the best. That's insane. Instead, let's use the DeclaredTypeInContext for the generic type so the archetypes actually get usefully bound inside the witnesses. This way, the witness implementations should be independent of generic parameters, so we can also mangle the unbound type into the witness symbols.
Swift SVN r7901
These value witness table entries will be conditionally available for types that support specialized union representation through extra inhabitants and/or spare bits and for union value witnesses:
- storeExtraInhabitant, to store an extra inhabitant representation;
- getExtraInhabitantIndex, to recognize an extra inhabitant representation;
- getUnionTag, to get a union's discriminator; and
- inplaceProjectUnionData, to extract the value in place from a union.
This just sets up the enumerators and related IR types and mangling; nothing emits these witnesses yet.
Swift SVN r7234
We need to handle three cases:
- If a protocol conformance has no associated types, or the associated type witnesses all have statically resolvable metadata, we can expose a *direct* witness table symbol.
- If a protocol conformance has associated types with runtime-instantiated metadata, we need to gate the witness table behind a *lazy* initializer function to fill in the metadata fields.
- If a protocol conformance has associated types where the type or one of its conformances are *dependent* on its parent's generic parameters, we need to instantiate multiple witness tables at runtime.
Swift SVN r6805
the debug info, to aid the debugger in figuring out the implementation
language of a given type in multi-language environments.
FYI, where applicable, we also emit the
DW_AT_APPLE_runtime_class(DW_AT_lang_Swift) attribute.
The demangler accepts type names with the "_Tt" prefix without the --type
switch.
Swift SVN r6714
We mangle the type of the property, not the type of the accessor, so the uncurry level of the accessor is irrelevant to the mangler and causes the mangler to mangle properties of function type incorrectly--'var x : () -> ()', for instance, gets mangled to '_T6module1xfT_T_g' (with a lowercase uncurried 'f') instead of the proper '_T6module1xFT_T_g'. This broke the ListMaker test because SILGen and IRGen were coming up with inconsistent manglings for the 'handler' property of UndoManager in NSUndoManagerExts. Fixes <rdar://problem/13926113>.
Swift SVN r5229
storage in a flags word in the value witness table. Pack the
alignment into only 16 bits of this word. Optimize tuple value
witnesses based on whether they're POD and inline.
Swift SVN r5138
Add a SWIFT_FALLTHROUGH macro that expands to [[clang::fallthrough]] for Clang and nothing for other compilers. No functionality change.
Swift SVN r5043
To be able to get the dynamic type of a generic value, the 'typeof' operation needs to be part of the value witness for the type. Add 'typeof' to the value witness table layout, and in the runtime, provide standard typeof witnesses for static, Swift class, and ObjC class values.
Swift SVN r5013
Sever the last load-bearing link between SILFunction and SILConstant by naming SILFunctions with their mangled symbol names. Move the core of the mangler up to SIL, and teach SILGen how to use it to mangle a SILConstant.
Swift SVN r4964
