[Bug tree-optimization/23855] loop header should also be pulled out of the inner loop too

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23855

--- Comment #28 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 32051
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32051&action=edit
updated patch

Slight update to apply all possible hoists to PR60042.