http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54124
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-07-30 02:28:19 UTC --- http://gcc.gnu.org/onlinedocs/gcc-4.7.1/cpp/Invocation.html#index-dM-185 It is there for me. It is not under the GCC manual but rather the CPP manual.
