[Bug tree-optimization/59387] [4.9 Regression] wrong code (hangs) at -Os on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59387

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31797
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31797&action=edit
gcc49-pr59387.patch

Untested fix.