Patch to improve ir-gen for constructors with default argument
expressions and a test case.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78213 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 6cad4b2..ca7e02b 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -1672,6 +1672,14 @@
                                     CXXConstructorDecl *Constructor,
                                     QualType DeclInitType, 
                                     Expr **Exprs, unsigned NumExprs);
+  
+  /// BuildCXXConstructExpr - Creates a complete call to a constructor,
+  /// including handling of its default argument expressions.
+  Expr * BuildCXXConstructExpr(ASTContext &C,
+                               QualType DeclInitType,
+                               CXXConstructorDecl *Constructor,
+                               bool Elidable,
+                               Expr **Exprs, unsigned NumExprs);
 
   /// FinalizeVarWithDestructor - Prepare for calling destructor on the
   /// constructed variable.