[Bug rtl-optimization/57568] [4.8/4.9 Regression] wrong code for assignment in conditional at -Os

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57568

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 30280
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30280&action=edit
gcc49-pr57568.patch

Untested fix.