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.X-abi-triple` substitutions to compile the tests for
deployment to the minimum OS versions required for the APIs used in the tests,
instead of disabling availability checking.
First, and I really should've checked this, but global actors do not
require `shared` to return `Self`; adjust the logic to propagate the
right formal type to the erasure logic.
Second, handle attempts to erase the isolation of something isolated to
a distributed actor using the magic Actor conformance that Doug added.
This only works when the actor is local, but it shouldn't be difficult to
enforce that we only attempt to erase isolation what that's true --- we
need to prevent partial application of distributed actors, and we need to
disallow explicit isolated captures of distributed actors when we're not
currently isolated to it. Otherwise, it's not possible to get an
@isolated(any) function value with an isolation that isn't the current
function's isolation, which means it always has to be local.
Fixed rdar://123734019
