[fix][llvm][dwwarf] Change CU/TU index to 64-bit

[ayermolo]

Summary

Test:
dwarfdump-dwp.test

On ARM:
3 0xfef104c25502f092 [0x000000000000002d, 0x000000000000005f) [0x0000008e, 0x00000043) [0x00000034, 0x0000001a) [0x00000024, 0x00000010)

On X86/check
; CHECK-NEXT: 3 0xfef104c25502f092 [0x000000000000002d, 0x000000000000005f) [0x00000043, 0x0000008e) [0x0000001a, 0x00000034) [0x00000010, 0x00000024)

llvm/lib/DebugInfo/DWARF/DWARFUnitIndex.cpp

if (auto *Contribs = Row.Contributions.get()) {
         DWARFSectionKind Kind = ColumnKinds[i];
         if (Kind == DWARFSectionKind::DW_SECT_INFO ||
             Kind == DWARFSectionKind::DW_SECT_EXT_TYPES)
           OS << format("[0x%016" PRIx64 ", 0x%016" PRIx64 ") ",
                        Contrib.getOffset(),
                        Contrib.getOffset() + Contrib.getLength());
         else
           OS << format("[0x%08" PRIx32 ", 0x%08" PRIx32 ") ",
-                       Contrib.getOffset(),
-                       Contrib.getOffset() + Contrib.getLength());
+                       Contrib.getOffset32(),
+                       Contrib.getOffset32() + Contrib.getLength32());
       }
       OS << '\n';
     }
   }
 }
 
 const DWARFUnitIndex::Entry::SectionContribution *
 DWARFUnitIndex::Entry::getContribution(DWARFSectionKind Sec) const {