swift234

Switch the rest of the ArgumentInitVisitor cases over to using
RValue::forwardInto.  While this isn't directly related to my
current problem, it is obvious goodness.  This avoids materializing
"as a single value" the argument values, which means that we don't
create a temporary holding the value when we have tuple elements,
allowing us to generate more efficient code (particularly for
address-only tuple).



Swift SVN r12233