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Commit https://reviews.llvm.org/D57939 ("[DWARF] Refactor RelocVisitor and fix computation of SHT_RELA-typed relocation entries) made a change for relocation resolution when operating on an object file. The change unfortunately broke BPF as given SymbolValue (S) and Addent (A), previously relocation is resolved to S + A and after the change, it is resolved to S This patch fixed the issue by resolving relocation correctly. It looks not all relocation resolution reaches here and I did not trace down exactly when. But I do find if the object file includes codes in two different ELF sections than default ".text", the above bug will be triggered. This patch included a trivial two function source code to demonstrate this issue. The relocation for .debug_loc is resolved incorrectly due to this and llvm-objdump cannot display source annotated assembly. Differential Revision: https://reviews.llvm.org/D66372 llvm-svn: 369199
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