This patch adds a new flag sanitize-stable-abi to support linking
against the Sanitizers stable ABI added recently in compiler-rt. The
patch also passes extra options for the ASan pass when using this flag
to outline instrumentation code and remove version check.
rdar://112915278
Static read-only arrays didn't work when passed to ObjectiveC as NSArray.
The storage class of static read-only arrays doesn't carry information about the Element type.
The new `__SwiftDeferredStaticNSArray` is generic over the element type and doesn't have to rely on the element type information of the array storage.
rdar://94185998
* `alloc_vector`: allocates an uninitialized vector of elements on the stack or in a statically initialized global
* `vector`: creates an initialized vector in a statically initialized global
The errorUnion type operation specifies how thrown error types are
combined when multiple errors are thrown in the same context. When
thrown error types can have type variables in them, we sometimes cannot
resolve the errorUnion until the type variables have substitutions. In
such cases, we need to persist the result of errorUnion in the
constraint solver.
Introduce the ErrorUnionType to do exactly that, and update the core
errorUnion operation to produce an ErrorUnionType when needed. At
present, this code is inert, because any errorUnion operation today
involves only concrete types. However, inference of thrown errors in
closures will introduce type variables, and depend on this.
We already need to track the inverses separate from the members in a
ProtocolCompositionType, since inverses aren't real types. Thus, the
only purpose being served by InverseType is to be eliminated by
RequirementLowering when it appears in a conformance requirement.
Instead, we introduce separate type InverseRequirement just to keep
track of which inverses we encounter to facilitate cancelling-out
defaults and ensuring that the inverses are respected after running
the RequirementMachine.
Besides being an optimization, using memcpy directly rather than a value
witness is required in order to interact with unaligned instances of
such types: the value witness functions expect their arguments to be
aligned.
rdar://96919870
Similar to the existing variant which takes a fixed size, the new
variant which takes a dynamic size digs the relevant address and
alignment values out of the Address struct and passes them along.
This patch stores the source code of macro in the source field of DIFile, which
can be used together with the DW_LLVM_LNCT_source extension to emit the source
code into DWARF debug info.
rdar://110926109
This was because `LoweredFunctionSignature::visitParameterList` has a special case for parameters with an empty LLVM representation (e.g. an empty struct) but forgot to increment the counter, which then tripped the assertion.
Resolves#70016.
Replace the generation of debug info for enums from DW_TAG_union_type
to either DW_TAG_enumeration_type or DW_TAG_variant_part, as these
representation match Swift enums more closely.
