[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 #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31777
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31777&action=edit
gcc49-pr59387.patch

So like this?  I'll bootstrap/regtest it with additional logging to see how
often we refuse to sccp because of this.