> Some dwarf consumers (dwarves, systemtap and dwarflint) grok Dwarf V4, > but not yet the new .debug_types section. To make it easier to use these > tools with -gdwarf-4 this patch introduces a new > -fno-debug-types-section flag and guards all code that is type unit > specific with use_debug_types instead of a generic dwarf_version >= 4 > flag. IMHO this makes the code also slightly more readable. And it > re-enables the usage of -feliminate-dwarf2-dups with -gdwarf-4. Although > admittedly the value of that is probably pretty low. I found it helpful > in debugging some issues with dwarf consumers and DW_FORM_ref_addr > usage.
I can't approve the patch, but I think it's a good option to have and the patch looks good to me. -cary
