[llvm-dev] DebugInfo work contribution and update.

David Blaikie via llvm-dev
Thu, 10 Oct 2019 18:40:15 -0000

On Wed, Oct 9, 2019 at 1:33 PM Robinson, Paul <paul.robinson at sony.com>
wrote:

> > From: David Blaikie <dblaikie at gmail.com>
> >> On Wed, Oct 9, 2019 at 11:59 AM Robinson, Paul <mailto:
> paul.robinson at sony.com> wrote:
> >> There are many bits of DWARF-5 that haven’t been implemented.
> >
> > Got a short list, by chance?
>
> I can't say I've been keeping track of all that has gone in, but
based
> on the list that I came up with when I was sizing the initial DWARF 5
> work, things that might not be done include:
>
> Default location entry
> Inline namespace attribute
> Reference-qualified member functions
> "auto" return type
> Type/item alignment
> Defaulted template parameter
> Atomic type modifier
> DW_OP_implicit_pointer
> .debug_macro section
> Typed expressions
> Supplementary objects
>

Ah, thanks for the list - mostly I'm interested in cases where Clang's
output is not valid DWARFv5 when requested - the new features DWARFv5
enables/allows but doesn't require are lower priority to me. Which I
don't
think too much is left - DWARFv5 loclists in split DWARF is one I know of &
might get to if someone else doesn't do it before me - I'm currently
improving loclist emission (quality of implementation - using fewer address
pool entries & just general code cleanup to share some of teh
implementation with rnglist emission, not a compliance issue)


>
> Things I have noticed going in recently:
>
> Call-site and entry-value stuff (is that complete?)
> New language/dialect codes
> Deleted/defaulted members is in progress
> "noreturn" functions is in progress
>
> I can't remember whether split-DWARF is fully v5 compliant...
>
> If any items above are in fact done, my apologies and VERY happy to be
> corrected.
> --paulr
>
>
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