[lld] [lld] Merge GOT entries for symbols that have been ICFed (PR #131630)

[Pranav Kant via llvm-commits]

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@@ -138,6 +137,14 @@ class GotSection final : public SyntheticSection {
     bool isSymbolFunc;
   };
   SmallVector<AuthEntryInfo, 0> authEntries;
+
+  // Map of GOT entries keyed by section, offset, and type. The purpose is to
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pranavk wrote:

I imagine in that case the second element of this tuple would evolve into something more complex. Right now it's just the offset. For CHERI targets, it would include size and other things necessary -- first and third element would still be the same.

https://github.com/llvm/llvm-project/pull/131630