<div dir="ltr"><div>Hi Scott,</div><div><br></div><div>It's possible they've missed it, so I've explicitly CC'ed a number of the usual DWARF suspects, at least some of whom are on the standards committee. I don't have anything specific to add myself.</div><div><br></div><div>James<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 27 Apr 2020 at 15:25, via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I don't know what an acceptable ping rate on an RFC is, but I also <br>
wanted to add that if anyone prefers to review this on Phabricator the <br>
latest diff of <a href="https://reviews.llvm.org/D70523" rel="noreferrer" target="_blank">https://reviews.llvm.org/D70523</a> essentially includes the <br>
entire contents of the proposal, because it was moved to another file.<br>
<br>
Thanks,<br>
Scott<br>
<br>
On 2020-04-17 19:10, Scott Linder via llvm-dev wrote:<br>
> Hi llvm-dev,<br>
> <br>
> I'm writing on behalf of a team at AMD working on upstreaming support<br>
> for AMD GPUs into GDB. We have drafted a proposal of backwards<br>
> compatible extensions to DWARF for heterogeneous debugging which is<br>
> rendered at<br>
> <a href="https://llvm.org/docs/AMDGPUDwarfProposalForHeterogeneousDebugging.html" rel="noreferrer" target="_blank">https://llvm.org/docs/AMDGPUDwarfProposalForHeterogeneousDebugging.html</a>.<br>
> <br>
> The proposal includes a thorough introduction with justification, so I<br>
> won't belabor that here, but I do want to reiterate that the extensions<br>
> are designed to be vendor and architecture neutral, and completely<br>
> backwards compatible with DWARF 5.<br>
> <br>
> I am beginning to work on a reference implementation of the proposal in<br>
> LLVM, with some very preliminary support appearing in some patches<br>
> starting at <a href="https://reviews.llvm.org/D76877" rel="noreferrer" target="_blank">https://reviews.llvm.org/D76877</a>. Note that most of these<br>
> initial patches are AMDGPU-specific CFI changes, and more general<br>
> support for the extensions are still a WIP.<br>
> <br>
> I intended to also include the proposal inline, but it appears to be <br>
> too<br>
> large for the list. Instead I will just mention that the source is<br>
> available in the llvm-project repo as<br>
> llvm/docs/AMDGPUDwarfProposalForHeterogeneousDebugging.rst<br>
> <br>
> Regards,<br>
> Scott<br>
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</blockquote></div>