swift234

When simplifying switch_enum to a branch, don't forget the payload.

The optimization that was simplifying:
  %e = enum $T, #T.E, %payload
  switch_enum %e : $T, case #T.E: bb1
to an unconditional branch was not including the payload as a block
argument.

Fixes <rdar://problem/16509020>.

Swift SVN r15860