Re: [Bug tree-optimization/103989] [12 regression] std::optional and bogus -Wmaybe-unitialized at -Og since r12-1992-g6feb628a706e86eb

[Jan Hubicka via Gcc-bugs]

> You can not disable an IPA pass becasuse then we will mishandle
> optimize attributes.  I think you simply want to set
> 
> flag_inline_small_functions = 0
> flag_inline_functions_called_once = 0 

Actually I forgot, we have flag_no_inline which makes
tree_inlinable_function_p to return false for everything except for
ALWAYS_INLINE and so we only want to set this one for Og.