[Bug tree-optimization/117876] get_later_stmt used on stmts not in the same BB

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117876

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 59772
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=59772&action=edit
incomplete patch

Tried this one, but still some callers are broken.  Need to revisit during
stage1.