[llvm] Move a lot of symbol code to use the symbol string pool (PR #115796)

[Jared Wyles via llvm-commits]

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@@ -165,6 +165,16 @@ Section::~Section() {
     B->~Block();
 }
 
+LinkGraph::~LinkGraph() {
+  for (auto *Sym : AbsoluteSymbols) {
+    Sym->~Symbol();
+  }
+  for (auto *Sym : external_symbols()) {
+    Sym->~Symbol();
+  }
+  ExternalSymbols.clear();
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jaredwy wrote:

It was needed for something... but can't remember what. Ill leave it in with a fixme for now. 

https://github.com/llvm/llvm-project/pull/115796