swift234

print the type of the operand to return and autorelease_return,
print the element types of struct.

The empty function now prints as:

sil @_T1t5emptyFT_T_ : $[thin] () -> () {
bb0:
  %0 = tuple ()
  %1 = tuple ()                                   // users: %2
  %2 = return %1 : $()
}



Swift SVN r5267