[lld] [lld][ICF] Don't merge symbols with different addends (PR #139493)

[James Y Knight via llvm-commits]

jyknight wrote:

As per previous discussion, the symbol folding needs to be done in all circumstances where section folding considers the symbols as equivalent -- at least for the special relocation types.

So (at least for those kinds of relocs) I think we must forbid the fold of sections with relocations having different offsets in the first place. (Rather than just avoid folding the symbols, as this patch does).

https://github.com/llvm/llvm-project/pull/139493