[Bug c++/57391] [4.9 Regression] ICE compiling AIX math.h caused by PR c++/56930

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57391

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Looks like cxx_eval_constant_expression needs to also handle FMA_EXPR