On Mon, Jan 08, 2018 at 03:55:52AM -0800, H.J. Lu wrote:
> > I'm wondering whether thunk creation can be a good target-independent
> > generalization? I guess
> > we can emit the function declaration without direct writes to asm_out_file?
> > And the emission
> > of function body can be potentially a target hook?
> >
> > What about emitting body of the function with RTL instructions instead of
> > direct assembly write?
> > My knowledge of RTL is quite small, but maybe it can bring some
> > generalization and reusability
> > for other targets?
>
> Thunks are x86 specific and they are created the same way as 32-bit PIC
> thunks.
> I don't see how a target hook is used.
Talking about PIC thunks, those have I believe . character in their symbols,
so that they can't be confused with user functions. Any reason these
retpoline thunks aren't?
Jakub
