RFC: Option handling and PR 37565

[Ian Lance Taylor]

Steve Ellcey <sje@cup.hp.com> writes:

> So instead of 
> 	if (flag_var_tracking)
> we would have
> 	if (targetm.get_optimization_flag_value(OPT_fvar_tracking))

I don't particularly want to have to make an indirect function call
every time we check a flag.  I don't see why we should check every time
when we can determine the value once when the compiler starts.

Also, we would still need a place to give backend warnings like

unwind tables currently require either a frame pointer or -maccumulate-outgoing-args for correctness

So I guess I don't much like the idea.

Ian