This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [PATCH] Fix flag_eliminate_dwarf2_dups/flag_eliminate_unused_debug_types clash
On Tue, Mar 04, 2003 at 02:18:23AM +0100, Zdenek Dvorak wrote:
> Hello,
>
> > > * dwarf2out.c (dwarf2out_finish): Swap break_out_includes and
> > > prune_unused_types order.
> >
> > I guess this is ok, but I think it more useful to turn off
> > flag_eliminate_unused_debug_types when flag_eliminate_dwarf2_dups.
>
> this patch puts types into their own sections in case
> both flag_eliminate_unused_debug_types and flag_eliminate_dwarf2_dups
> are used, so that they do not conflict with each other. It always does
> this for basic types with flag_eliminate_dwarf2_dups (they are usually
> defined in all object files). The results (sizes of cc1 compiled with
> various flag combinations):
Zdenek, I'd like to ask you a question about -feliminate-dwarf2-dups.
It's not new with this patch, but I think it'll get worse.
Is there any way for a debugger to reconstruct what types are visible
in a given source file? Or what headers were included? It looks like
the BINCL/EINCL tags are never emitted and there are no references to
the header file's entire CU from the main CU.
Scanning the spec it looks like the anonymous CUs should be
DW_TAG_partial_unit instead of DW_TAG_compile_unit and we should be
using DW_TAG_imported_unit.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer