[lld] [llvm] [DTLTO][LLD][ELF] Support bitcode members of thin archives (PR #149425)

[via llvm-commits]

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@@ -1770,10 +1801,13 @@ BitcodeFile::BitcodeFile(Ctx &ctx, MemoryBufferRef mb, StringRef archiveName,
   // symbols later in the link stage). So we append file offset to make
   // filename unique.
   StringSaver &ss = ctx.saver;
-  StringRef name = archiveName.empty()
-                       ? ss.save(path)
-                       : ss.save(archiveName + "(" + path::filename(path) +
-                                 " at " + utostr(offsetInArchive) + ")");
+  StringRef name =
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bd1976bris wrote:

I have split the logic up. See what you think.

https://github.com/llvm/llvm-project/pull/149425