For years, I've been involved in updating LLVM's MC layer. A recent journey led me to eliminate the FK_PCRel_ fixup kinds: MCFixup: Remove FK_PCRel_ The generic FK_Data_ fixup kinds handle both absolute and PC-relative fixups. ELFObjectWriter sets IsPCRel to true for `.long foo-.`, so the backend has to handle PC-relative FK_Data_. However, the existence of FK_PCRel_ encouraged backends to implement it as a separate fixup type, leading to redundant and error-prone code. Removing FK_PCRel_ sim...
