Comment 13 for bug 440172

I think if we don't want to emit .eh_frame, we should just default to -fno-dwarf2-cfi-asm. But if we do want to generate it, I fail to see what do we gain by also generating .debug_frame. Duplicating the same info, in one case in a more compat form, doesn't look like a good idea.

If we decide to teach gas to emit both .eh_frame and .debug_frame, or just
.eh_frame, or just .debug_frame from CFI directives (controlled using some directive or option?), then one thing that needs solving is that gas will have to hardcode a register mapping table for ppc*, because on ppc .eh_frame uses
a different register numbering from .debug_frame.