swift234

Introduce assignments into the implicitly-defined default constructor body.

Add assignment statements into the implicitly-defined default
constructor body to initialize all of the members appropriately, e.g.,
by calling the default constructor. For builtin types and class types,
introduce ZeroValueInitExpr to produce a "zero" value.

ZeroValueInitExpr still needs a representation in SIL. Until then,
actual generation of this AST is suppressed.



Swift SVN r4895