FYI: handle DW_OP_call_frame_cfa in AX compiler

[Tom Tromey]

>>>>> "Pedro" == Pedro Alves <pedro@codesourcery.com> writes:

Pedro> OOC, why the dwarf2_compile_ftype abstraction?  Are you working
Pedro> on other changes where you'll pass down something else?

Nope, I just didn't want to make compile_dwarf_to_ax public.
Maybe it is better to just do that.
What do you think?

>> +	      ax_const_l (expr, - fs.regs.cfa_offset);

Pedro> No space after `-'.

Thanks, I will fix it.

Tom