Subzero. Uses fixups to calculate addend to relocations.

src/IceELFSection.h

 //===- subzero/src/IceELFSection.h - Model of ELF sections ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 349 matching lines @@
       Symbol = SymTab->findSymbol(Name);
       if (!Symbol)
         llvm::report_fatal_error(Name + ": Missing symbol mentioned in reloc");
     }
 
     if (IsELF64) {
       Elf64_Rela Rela;
       Rela.r_offset = Fixup.position();
       Rela.setSymbolAndType(Symbol->getNumber(), Fixup.kind());
       Rela.r_addend = Fixup.offset();
-      if (Fixup.kind() == llvm::ELF::R_X86_64_PC32) {
-        // In ELF64, PC-relative relocations' addends need to account for the
-        // immediate size. For now, this is always 4 (because x86-64 sandboxed
-        // is the only ELF64 target currently implemented.)
-        constexpr int32_t RelocImmediateSize = 4;
-        Rela.r_addend -= RelocImmediateSize;
-      }
       Str.writeAddrOrOffset<IsELF64>(Rela.r_offset);
       Str.writeELFXword<IsELF64>(Rela.r_info);
       Str.writeELFXword<IsELF64>(Rela.r_addend);
     } else {
       Elf32_Rel Rel;
       Rel.r_offset = Fixup.position();
       Rel.setSymbolAndType(Symbol->getNumber(), Fixup.kind());
       Str.writeAddrOrOffset<IsELF64>(Rel.r_offset);
       Str.writeELFWord<IsELF64>(Rel.r_info);
     }
   }
 }
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEELFSECTION_H