[lld] [lld-macho] Implement symbol string deduplication (PR #123874)

[Peter Rong via llvm-commits]

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@@ -1476,3 +1476,8 @@ def no_warn_duplicate_libraries : Flag<["-"], "no_warn_duplicate_libraries">,
     HelpText<"Do not warn if the input contains duplicate library options.">,
     Flags<[HelpHidden]>,
     Group<grp_ignored_silently>;
+
+// Add this with the other flags in the rare options group
+def no_deduplicate_symbol_strings : Flag<["-"], "no-deduplicate-symbol-strings">,
+    HelpText<"Do not deduplicate strings in the symbol string table. Might result in larger binaries but slightly faster link times.">,
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DataCorrupted wrote:

Do you want to also note that "no_dedup..." takes higher priority if both flags are present?

https://github.com/llvm/llvm-project/pull/123874