llvm dev - Jan 2018 - [lldb-dev] Adding DWARF5 accelerator table support to llvm

FWIW I'm completely on board with everything Adrian has said in this thread
:)

-eric

On Wed, Jan 17, 2018 at 11:00 AM Adrian Prantl via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
>
>
> > On Jan 17, 2018, at 9:20 AM, Jonas Devlieghere via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
> >
> > As mentioned by Adrian in the comment you linked, I too am looking at
> DWARFv5
> > accelerator tables in LLVM.
> >
> > To give you some background: my motivation is that I want to upstream
> support
> > for (Apple style) accelerator tables in llvm-dsymutil,
>
> Some background for the benefit of everyone who may not be aware of the
> genesis of the DWARF v5 accelerator tables:
>
> DWARF v5 accelerator tables are a direct evolution of the "Apple"
> accelerator tables that are implemented in LLVM (after going through the
> standardization process and being reworked/generalized there), so we hope
> that the implementation can at least share some common interfaces with the
> existing Apple accelerator table implementation where this makes sense.
>
> -- adrian
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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Thank you for all the responses. Unfortunately I wasn't able to make
any progress on creating the patches today. I'll be sure to add
everyone who expressed interest here to the phabricator diff once I
have them ready.

Jonas, do you have any dsymutil patches I can look at? I am interested
in seeing what kind of interfaces are you using, particularly on the
reading side. I think the current DWARFAcceleratorTable interface will
need to be redesigned a bit if we want it to fit the dwarf5 tables as
well.

On 17 January 2018 at 20:52, Eric Christopher via lldb-dev
<lldb-dev at lists.llvm.org> wrote:
> FWIW I'm completely on board with everything Adrian has said in this
thread
> :)
>
> -eric
>
> On Wed, Jan 17, 2018 at 11:00 AM Adrian Prantl via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>>
>>
>>
>> > On Jan 17, 2018, at 9:20 AM, Jonas Devlieghere via llvm-dev
>> > <llvm-dev at lists.llvm.org> wrote:
>> >
>> > As mentioned by Adrian in the comment you linked, I too am looking
at
>> > DWARFv5
>> > accelerator tables in LLVM.
>> >
>> > To give you some background: my motivation is that I want to
upstream
>> > support
>> > for (Apple style) accelerator tables in llvm-dsymutil,
>>
>> Some background for the benefit of everyone who may not be aware of the
>> genesis of the DWARF v5 accelerator tables:
>>
>> DWARF v5 accelerator tables are a direct evolution of the
"Apple"
>> accelerator tables that are implemented in LLVM (after going through
the
>> standardization process and being reworked/generalized there), so we
hope
>> that the implementation can at least share some common interfaces with
the
>> existing Apple accelerator table implementation where this makes sense.
>>
>> -- adrian
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>
> _______________________________________________
> lldb-dev mailing list
> lldb-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
>

> On Jan 18, 2018, at 7:52 AM, Pavel Labath via lldb-dev <lldb-dev at
lists.llvm.org> wrote:
> 
> Thank you for all the responses. Unfortunately I wasn't able to make
> any progress on creating the patches today. I'll be sure to add
> everyone who expressed interest here to the phabricator diff once I
> have them ready.
> 
> Jonas, do you have any dsymutil patches I can look at? I am interested
> in seeing what kind of interfaces are you using, particularly on the
> reading side. I think the current DWARFAcceleratorTable interface will
> need to be redesigned a bit if we want it to fit the dwarf5 tables as
> well.
Dsymutil never reads accelerator tables. It rebuilds them while walking the
debug_info section.

Fred
> On 17 January 2018 at 20:52, Eric Christopher via lldb-dev
> <lldb-dev at lists.llvm.org> wrote:
>> FWIW I'm completely on board with everything Adrian has said in
this thread
>> :)
>> 
>> -eric
>> 
>> On Wed, Jan 17, 2018 at 11:00 AM Adrian Prantl via llvm-dev
>> <llvm-dev at lists.llvm.org> wrote:
>>> 
>>> 
>>> 
>>>> On Jan 17, 2018, at 9:20 AM, Jonas Devlieghere via llvm-dev
>>>> <llvm-dev at lists.llvm.org> wrote:
>>>> 
>>>> As mentioned by Adrian in the comment you linked, I too am
looking at
>>>> DWARFv5
>>>> accelerator tables in LLVM.
>>>> 
>>>> To give you some background: my motivation is that I want to
upstream
>>>> support
>>>> for (Apple style) accelerator tables in llvm-dsymutil,
>>> 
>>> Some background for the benefit of everyone who may not be aware of
the
>>> genesis of the DWARF v5 accelerator tables:
>>> 
>>> DWARF v5 accelerator tables are a direct evolution of the
"Apple"
>>> accelerator tables that are implemented in LLVM (after going
through the
>>> standardization process and being reworked/generalized there), so
we hope
>>> that the implementation can at least share some common interfaces
with the
>>> existing Apple accelerator table implementation where this makes
sense.
>>> 
>>> -- adrian
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>> 
>> 
>> _______________________________________________
>> lldb-dev mailing list
>> lldb-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev
>> 
> _______________________________________________
> lldb-dev mailing list
> lldb-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev