[LLVMdev] DWARF unmangled subprog name (DW_AT_name)

[Eric Christopher]

On Tue, May 6, 2014 at 8:09 PM, Isaiah Norton <isaiah.norton at gmail.com> wrote:
> Hi,
>
> I am looking for a way to get unmangled subprogram names from a
> DWARFContext. The name I want is available in the attribute `DW_AT_name`
> [1], but as far as I can tell this is only returned as a fallback in
> `DWARFDebugInfoEntryMinimal::getSubroutineName` when the linkage name is not
> available [2].
>
> If this is not currently possible, is there any interest in adding such
> access to the public DebugInfo API? Perhaps with an additional
> "UnmangledName" option in `DILineInfoSpecifier`.
>
> Thanks,
> Isaiah
>
> [1]: for example:
>
> 0x0001bb00:   DW_TAG_subprogram [2]
>                 DW_AT_MIPS_linkage_name [DW_FORM_strp]  (
> .debug_str[0x00007934] = "julia_vcat4473")
>                 DW_AT_name [DW_FORM_strp]       ( .debug_str[0x00000913] =
> "vcat")
>
>
> [2]
> https://github.com/llvm-mirror/llvm/blob/master/lib/DebugInfo/DWARFDebugInfoEntry.cpp#L279-L286
>
>

If you just want the DW_AT_name you should be able to iterate over the
DIEs and pull out the DW_AT_name attribute from all of the subprogram
DIEs. Is there some other use that you're looking for? I'm not quite
sure what you're trying to accomplish.

-eric