Large trivial types were copied via memcpy instead of doing a field-wise
copy. This is incorrect for types with reference fields where we also
need to bump the corresponding refcounts.
rdar://160315343
`.swift_ast` section is now recognized as a "metadata" section by LLVM's
object emission. On WebAssembly, metadata symbols must not appear in the
object file symbol table. Therefore, change the linkage of the
`@__Swift_AST` global from InternalLinkage to PrivateLinkage to avoid
exposing the symbol.
555eaef3ab
swift_coroFrameAlloc was introduced in the Swift 6.2 runtime. Give it
the appropriate availability in IRGen, so that it gets weak
availability when needed (per the deployment target). Then, only
create the stub function for calling into swift_coroFrameAlloc or
malloc (when the former isn't available) when we're back-deploying to
a runtime prior to Swift 6.2. This is a small code size/performance
win when allocating coroutine frames on Swift 6.2-or-newer platforms.
This has a side effect of fixing a bug in Embedded Swift, where the
swift_coroFrameAlloc was getting unconditionally set to have weak
external linkage despite behind defined in the same LLVM module
(because it comes from the standard library).
Fixes rdar://149695139 / issue #80947.
Make sure they are excluded from the reflection metadata (although in
the future we want to make sure indirect fields are included). Make sure
the users cannot refer to the anonymous field, only its members.
ResultConvention::Guaranteed will be used by borrow accessors when the storage type can be returned by value.
ResultConvention::GuaranteedAddress will be used by mutate accessors and borrow accessors when the storage type
cannot be returned by value.
Lazy emission of SIL global variables caused us to go through the
creation of two different LLVM struct types for the same
initialization, tripping an assertion in LLVM. Cache it along with
other information about the static-initialized object rather than
rebuilding it.
Also fix the lazy_globals test to account for the laziness,
generalizing it to also run on arm64 so I won't miss it locally.
Delay the emission of SIL global variables that aren't externally
visible until they are actually used. This is the same lazy emission
approach that we use for a number of other entities, such as SIL
functions.
Part of rdar://158363967.
Anonymous structs cannot be copied or moved, these operations only can
happen to their enclosing non-anonymous types. Stop trying to emit
special member functions and value witness tables for these structs.
rdar://159143492
Previously all bits after the spare bits of the first element were marked as spare bits. This caused enum tags to be stored in bits used by the payload.
