[LLVMdev] DEBUG INFO at the bytecode level

[Zheng Wang]

Thanks Edwin, I will check it out.

Cheers,
Zheng

2010/5/18 Török Edwin <edwintorok at gmail.com>:
> On 05/18/2010 02:13 PM, Zheng Wang wrote:
>> Got it.
>>
>> I am using LLVM 2.6. I guess  bool getLocationInfo(const Value *V,
>> std::string &DisplayName,...) has everything I need.\
>
> Yes, for variables.
> For instructions see what printStopPoint() does in DbgInfoPrinter.cpp.
>
> However I'd suggest upgrading to llvm 2.7 and doing your development
> there directly.
> First of all llvm 2.7 has much better debuginfo support (in 2.6 applying
> any optimization would most likely destroy line number debug info)
> Also 2.7 has a new way of representing debug info (Metadata instead of
> intrinsics), so it'll be less work to implement it for 2.7 right now
> instead of implementing for 2.6, and then reimplementing for 2.7
>
>>
>> Thanks a lot!!
>>
>> Cheers,
>> Zheng
>>
>> 2010/5/18 Török Edwin <edwintorok at gmail.com>:
>>> On 05/18/2010 02:08 PM, Zheng Wang wrote:
>>>> Thanks Edwin.
>>>>
>>>> I found DebugInfo.cpp may be useful. Could you tell me which function
>>>> I should call inorder to know the source file name and the line number
>>>> for a particular instruction?
>>>
>>> Which version of LLVM?
>>> There was a major change between 2.6 and 2.7 so my answer depends on that.
>>>
>>>>
>>>> Cheers,
>>>> Zheng
>>>>
>>>> 2010/5/18 Török Edwin <edwintorok at gmail.com>:
>>>>> On 05/18/2010 01:26 PM, Zheng Wang wrote:
>>>>>> Hello,
>>>>>>
>>>>>> Could I get some debug info at the byte code level? I am writing a
>>>>>> passer and if will be nice if I can know which line in the source an
>>>>>> instruction (or value) corresponds to.
>>>>>>
>>>>>> I found a document online:
>>>>>> http://llvm.org/docs/SourceLevelDebugging.html, but I can't find an
>>>>>> example of doing it at the byte code level.
>>>>>
>>>>> -print-dbginfo should print the source lines, at least the one in 2.6,
>>>>> the one in 2.7 seems to have the source line printing removed.
>>>>>
>>>>> I'll add it back when I get some time.
>>>>>
>>>>> Best regards,
>>>>> --Edwin
>>>>> _______________________________________________
>>>>> LLVM Developers mailing list
>>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
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>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>>
>
>



-- 
Best regards,

WANG Zheng