We want SILGen to have a simplified view of its executor and know that whenever
one sees an Actor, it is an actual actor instead of a Builtin.Executor. This
just simplifies code. Also, we should eventually have an invariant that
Builtin.Executor should only be allowed in LoweredSIL after LowerHopToExecutor
has run. But that is a change for another day.
This is a follow-up to https://github.com/swiftlang/swift/pull/82085
which made it so async variant doesn't get `@Sendable` inferred because
the proposal specified that inference should happen only on completion
handler parameter type of a synchronous variant of an imported API.
This runs into implementation issues related to thunking in some
cases were async convention expects the type of a completion handler
to match exactly for both variants of the imported API.
Resolves: rdar://154695053
This lifts the check for the feature flag up into the `importParameterType`
from `importType` and means that completion handler type for `async` variant
is no longer gains `@Sendable` attribute.
Type annotations for instruction operands are omitted, e.g.
```
%3 = struct $S(%1, %2)
```
Operand types are redundant anyway and were only used for sanity checking in the SIL parser.
But: operand types _are_ printed if the definition of the operand value was not printed yet.
This happens:
* if the block with the definition appears after the block where the operand's instruction is located
* if a block or instruction is printed in isolation, e.g. in a debugger
The old behavior can be restored with `-Xllvm -sil-print-types`.
This option is added to many existing test files which check for operand types in their check-lines.
Use the `%target-swift-5.1-abi-triple` substitution to compile the tests for
deployment to the minimum OS versions required for use of _Concurrency APIs,
instead of disabling availability checking.
Enables `-checked-async-objc-bridging` flag by default starting
from swift 6 language mode to provide enhanced debugging and
runtime checking for the correct usage of continuations passed
in a call to ObjC from Swift.
Because `CheckedContinuation` is not a @frozen struct we have
to use `Any` to store it in @block_storage indirectly. If the
flag is enabled, we'd emit a block storage with `Any` and
initialize the existential with stack allocated `CheckedContinuation`
formed from `UnsafeContinuation`. Inside of the completion handler
`Any` is going to be projected and cast back to `CheckedContinuation`.
