[llvm-dev] IR to binary address mapping

Muhui Jiang via llvm-dev llvm-dev at lists.llvm.org
Wed Jun 13 00:12:52 PDT 2018


If I understand right. You mean LLVM ever has the "DebugIR" pass that can
be used to map from textual IR to binary code but it is removed later.
Right? If so , I would try to search the related information and thank you
very much


2018-06-13 4:27 GMT+08:00 David Blaikie <dblaikie at gmail.com>:

> After the code is generated all you could really use would be debug info
> in the line table. There was for a time an LLVM pass ("DebugIR") for
> creating debug info/line table entries from LLVM textual IR source that'd
> give you the correspondence between the textual IR and the resulting
> machine code - but it's dead/removed - some folks might be trying to
> resurrect it somewhere, but I've not been keeping track.
> On Tue, Jun 12, 2018 at 7:30 AM Muhui Jiang via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>> Hi
>> I know that LLVM provide some debug API for us to know the source code
>> information. For example, every IR instruction's source line number and
>> column number.
>> However, are there any method to get a mapping from IR instruction to
>> binary address directly. I don't want to use dwarf line mapping table as a
>> bridge. I think the binary is generated by clang and llvm. I think there
>> definitely is some information about the mapping relationship between LLVM
>> IR and the target binary address. Do anyone has suggestions? Many Thanks
>> Regards
>> Muhui
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
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