[LLVMdev] generating !llvm.dbg.sp

[Eric Christopher]

OK. I've cc'd myself on it.

-eric

On Feb 21, 2012, at 7:50 AM, "Bendersky, Eli" <eli.bendersky at intel.com> wrote:

> I’ve opened PR 12050 to track the problem with llvm.dbg.gv
>  
> Eli
>  
>  
> From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On Behalf Of Bendersky, Eli
> Sent: Tuesday, February 14, 2012 13:45
> To: Devang Patel; Eric Christopher
> Cc: llvmdev at cs.uiuc.edu
> Subject: Re: [LLVMdev] generating !llvm.dbg.sp
>  
> Eric, Devang,
>  
> FYI exactly the same applies for llvm.dbg.gv – it’s also still listed in the docs and in various places throughout the code, although no longer generated.
>  
> Eli
>  
>  
> From: Devang Patel [mailto:dpatel at apple.com] 
> Sent: Monday, February 13, 2012 19:26
> To: Eric Christopher
> Cc: Bendersky, Eli; llvmdev at cs.uiuc.edu
> Subject: Re: [LLVMdev] generating !llvm.dbg.sp
>  
> Thanks Eric. I know some of the references are in the code used for backward compatibility.
> -
> Devang
> On Feb 13, 2012, at 9:21 AM, Eric Christopher <echristo at apple.com> wrote:
>  
> 
> Thanks. I'll get them. :)
>  
> -eric
>  
> On Feb 13, 2012, at 1:41 AM, Bendersky, Eli wrote:
>  
> 
> Thanks. Note that there are still a few references to this MDNode scattered throughout the code-base, so if it’s no longer being generated, there may be some bugs lurking there.
>  
> Eli
>  
>  
> From: Devang Patel [mailto:dpatel at apple.com] 
> Sent: Thursday, February 09, 2012 19:36
> To: Bendersky, Eli
> Cc: llvmdev at cs.uiuc.edu
> Subject: Re: generating !llvm.dbg.sp
>  
>  
> On Feb 9, 2012, at 7:17 AM, "Bendersky, Eli" <eli.bendersky at intel.com> wrote:
> 
> 
> 
> Hello,
>  
> According to the documentation here -http://llvm.org/docs/SourceLevelDebugging.html:
>  
> >>    All subprogram descriptors are collected by a named metadata!llvm.dbg.sp.
>  
> LLVM seems to have lost the ability to generate this metadata node in r126871, when DIFactory was removed.
>  
> Is this an intended change?
>  
> Yes, I'll update the doc.
> 
> 
> 
> We were relying in the existence of this node, and things broke once we switched from LLVM 2.8 to 3.0.
> Is there an alternative location where all the subprogram debug descriptors (DW_TAG_subprogram) can be obtained?
>  
> You can use DebugInfoFinder from DebugInfo.h. It provides an iterator to walk over all subprograms.
> -
> Devang
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