[llvm] [BOLT] Use symbol table info in registerFragment (PR #89648)

[Maksim Panchenko via llvm-commits]

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@@ -28,10 +28,23 @@ class NameResolver {
   static constexpr char Sep = '/';
 
 public:
+  /// Return the counter for a given \p Name.
+  uint64_t getCounter(StringRef Name) const {
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maksfb wrote:

`getUniquifiedNameCount()`?

https://github.com/llvm/llvm-project/pull/89648