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
