[Bug tree-optimization/114892] folding and others dump options are not documented

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114892

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I should note I found this while helping a junior engineer and we went looking
for the documentation and it was not there for it.