http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54128
--- Comment #7 from Steve Ellcey <sje at gcc dot gnu.org> 2012-08-14 23:35:03 UTC --- The cutdown test case only shows the difference in code generation (between "-O2" and "-O2 -g") in big-endian mode. The original larger test case had differences in both big-endian and little-endian modes.