[LLVMdev] C++ demangling in LLVM

[Alexey Samsonov]

On Thu, Jul 5, 2012 at 10:34 AM, Chandler Carruth <chandlerc at google.com>wrote:

>
> On Wed, Jul 4, 2012 at 11:18 PM, Alexey Samsonov <samsonov at google.com>wrote:
>
>>
>> On Thu, Jul 5, 2012 at 9:08 AM, Chandler Carruth <chandlerc at google.com>wrote:
>>
>>> In the same way that the core LLVM libraries have support routines for
>>> DWARF, I think that both mangling and demangling should be provided as
>>> well. I suspect that the 'Support' library is the best we have, although
>>> eventually we need to split this library up a bit. That's not really your
>>> problem though.
>>>
>>> The bigger problem is that we don't have any good way of sharing code
>>> between runtime libraries (such as libcxxabi, sanitizer runtimes, etc) and
>>> LLVM.
>>>
>>
>> Yes, surely I want this to happen and would be happy to help if you (or
>> someone else) give some advice or guidance.
>>
>
> Did you see my proposal to llvmdev some time ago about how to do this? If
> you have thoughts about that, we should move the discussion to that thread.
>

Okay.

>
>
>>
>>
>>> One somewhat interesting question, would the APIs exposed by libcxxabi
>>> be sufficient for the sanitizer runtimes?
>>>
>>
>> How can we use libcxxabi anyway? I mean, is it shipped with compiler so
>> that we can make Clang driver tell to link user program with
>> libcxxabi in the same way we tell it to link with sanitizer runtimes if
>> flags -fwhatever-sanitizer is present?
>>
>
> Essentially, it could be. It's more complicated than just that though, so
> I was just curious if it would work.
>

libcxxabi seems to be mostly irrelevant for us. It has a demangler, which
can be useful for sanitizer and llvm tools (but not that essential, of
course) ... and that's it.

-- 
Alexey Samsonov, MSK
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