| Issue |
138684
|
| Summary |
[DebugInfo][LICM] Debug value info loss caused by removing dead instructions without salvaging
|
| Labels |
debuginfo
|
| Assignees |
|
| Reporter |
Apochens
|
1. Removing the dead instruction without salvaging the debug value info in `hoistAdd`:
https://github.com/llvm/llvm-project/blob/393c783a10052b14d2b76b3ee930b3d83e7f1a16/llvm/lib/Transforms/Scalar/LICM.cpp#L2597
**Code example:** https://godbolt.org/z/TbjdP5Y1d
2. Removing the dead instruction without salvaging the debug value info in `hoistSub`:
https://github.com/llvm/llvm-project/blob/393c783a10052b14d2b76b3ee930b3d83e7f1a16/llvm/lib/Transforms/Scalar/LICM.cpp#L2675
**Code example:** https://godbolt.org/z/h3veE8fj9
3. Removing the dead instruction without salvaging the debug value info in `hoistBOAssociation`:
https://github.com/llvm/llvm-project/blob/393c783a10052b14d2b76b3ee930b3d83e7f1a16/llvm/lib/Transforms/Scalar/LICM.cpp#L2882-L2883
**Code example:** https://godbolt.org/z/9nE7Tob6E
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