[Bug tree-optimization/57723] Missed optimization: recursion around empty function

[petschy at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57723

--- Comment #5 from petschy at gmail dot com ---
Created attachment 30368
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30368&action=edit
fixed test case (correct recursive traversal)