[Bug rtl-optimization/57708] [4.8 regression] function clobbers callee saved register on ARM

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57708

--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Proposed patch posted here:

http://gcc.gnu.org/ml/gcc-patches/2013-08/msg00194.html