[llvm] [BOLT][DWARF] Refactor updateDWARFObjectAddressRanges (PR #96006)

[Alexander Yermolovich via llvm-commits]

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@@ -1605,6 +1618,26 @@ void DWARFRewriter::finalizeCompileUnits(DIEBuilder &DIEBlder,
                                          DIEStreamer &Streamer,
                                          CUOffsetMap &CUMap,
                                          const std::list<DWARFUnit *> &CUs) {
+  size_t BufferSize = 0;
+  for (DWARFUnit *CU : CUs) {
+    if (CU->getVersion() != 4)
+      continue;
+    std::optional<uint64_t> DWOId;
+    DWOId = CU->getDWOId();
+    if (DWOId) {
+      if (DIE *Die = UpdatedDIEsByDWO[*DWOId]) {
+        DIEValue DvalGNUBase = Die->findAttribute(dwarf::DW_AT_GNU_ranges_base);
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ayermolo wrote:

Add assert that DvalGNUBase is valid.

https://github.com/llvm/llvm-project/pull/96006