[llvm] [nfc]Make InstrProfSymtab non-copyable and non-movable (PR #86882)

[Mingming Liu via llvm-commits]

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@@ -471,6 +471,15 @@ class InstrProfSymtab {
 public:
   InstrProfSymtab() = default;
 
+  // Not copyable or movable.
+  // Consider std::unique_ptr for move.
+  // InstrProfSymtab has a few containers as class members, so consider
+  // std::shared_ptr for read-only copy.
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minglotus-6 wrote:

sounds good! I also hesitated about whether to mention `shared_ptr` and added it mainly for completeness.

https://github.com/llvm/llvm-project/pull/86882