[llvm] [IPO] Teach AbstractAttribute::getName to return StringRef (NFC) (PR #141313)

[Matt Arsenault via llvm-commits]

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@@ -3706,7 +3706,7 @@ struct AANoRecurse
   static AANoRecurse &createForPosition(const IRPosition &IRP, Attributor &A);
 
   /// See AbstractAttribute::getName()
-  const std::string getName() const override { return "AANoRecurse"; }
+  StringRef getName() const override { return "AANoRecurse"; }
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arsenm wrote:

This probably should be something set in the AA constructor rather than an override 

https://github.com/llvm/llvm-project/pull/141313