swift234

SILGen: Implement calls with address-only arg/ret.
Handle address-only arguments and return values from the caller's end. The callee does not assume ownership of address-only arguments, so don't forward their ManagedValues to the apply. If the return type is address-only, allocate a local temporary, pass the address to the function, then give ownership of the cleanup to a ManagedValue referencing the address.

Swift SVN r3552