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DecodeException "Unknown subclass id for DINode: MDSubclassID 26" #15
Description
I tried to use WLLVM to compile a huge program. Then I got a excuteable file , and I used the command 'extract-bc' which was came from WLLVM to get the *.ll file. Finally, I used sys to check bugs, but I got a error "DecodeException "Unknown subclass id for DINode: MDSubclassID 26".
I found some clue about the problem in the llvm-hs project.
"Comparing LLVM Specialized Metadata Nodes with llvm-hs supported Metadata subclasses "
llvm-hs/llvm-hs#307
Is there anyone knows how to slove the isssue? or, Is there any other way to get the ll file in a huge program?
Thanks!
Activity
deian commentedon Feb 8, 2021
sorry for the delay, my notification set up sucks. I think I fixed a few similar issues in llvm-hs in the past. (You can checkout our llvm-hs fork.) Their support is not complete and with huge files you'll hit edge cases like this once in a while.
That's honestly the easiest way to go about it.
killer933 commentedon Feb 18, 2021
I'm happy to hear from the author. I also want to know the commit version of llvm-hs which you had fixed. In that case, I can build the right llvm-hs. Thanks!
deian commentedon Feb 18, 2021
https://github.com/PLSysSec/sys/blob/master/stack.yaml#L8
asesidaa commentedon Apr 20, 2023
I think the easiest way is to build without the
-gflag, otherwise, you need to addDILabelsupport manually in llvm-hs as specified in the issue that you mentioned. You would also need to cherry-pick this commit llvm-hs/llvm-hs@b518fe1 before add new node.