[LLVMdev] using -debug-ir to map identify IR mapping (original) (raw)

Adrian Prantl aprantl at apple.com
Wed Oct 15 09:04:56 PDT 2014

I have no experience with debug-ir, but is it possible that the debug-ir pass never sets the debug info version? There should be a named metadata node !llvm.module.flags = !{..., !123} !123 = metadata !{i32 1, metadata !"Debug Info Version", i32 2} in the .ll output. If it is missing, just have a look at the clang sources for an example how to add a module flag.

-- adrian

On Oct 15, 2014, at 8:20 AM, Muneeb Khan <muneeb.khan at it.uu.se> wrote:

Yes, I am using opt and llc from the same version (3.5). I know that there were issues with debug-ir in 3.4. I have explored the source tree myself for 3.5 and I know that the pass -debug-ir does kick in with opt. But I have no clue of what happens with the debug information in (and after) the llc pass. /Muneeb On 15 Oct 2014, at 17:14, David Blaikie <dblaikie at gmail.com <mailto:dblaikie at gmail.com>> wrote:

On Wed, Oct 15, 2014 at 7:08 AM, Muneeb Khan <muneeb.khan at it.uu.se <mailto:muneeb.khan at it.uu.se>> wrote: Hi, I am using the -debug-ir pass in LLVM-3.5 opt tool to map binary information back to the IR instead of the source files. I use the opt tool to generate a .ll file. But when I run the llc tool on it to generate an assembly (or object) file, it gives me the following warning warning: ignoring debug info with an invalid version (0) in Are you using opt and llc from the same LLVM version? (mixing and matching could produce this problem) Or possibly debug-ir was never updated to produce the dubug info version - Adrian? How can I use the debug-ir functionality to achieve a mapping from the binary to the IR? Thanks! Muneeb Khan PhD student Department of Information Technology, Uppsala University, Sweden Tel: +46 18 - 471 1049 tel:%2B46%2018%20-%20471%201049

LLVM Developers mailing list LLVMdev at cs.uiuc.edu <mailto:LLVMdev at cs.uiuc.edu> http://llvm.cs.uiuc.edu <http://llvm.cs.uiuc.edu/> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev <http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev> Muneeb Khan PhD student Department of Information Technology, Uppsala University, Sweden Tel: +46 18 - 471 1049

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