[llvm] [MCA] Enable customization of individual instructions (PR #155420)

[Min-Yih Hsu via llvm-commits]

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@@ -134,6 +134,27 @@ class Instrument {
   StringRef getData() const { return Data; }
 };
 
+class LatencyInstrument : public Instrument {
+  std::optional<unsigned> Latency;
+
+public:
+  static const llvm::StringRef DESC_NAME;
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mshockwave wrote:

drop "llvm::"

https://github.com/llvm/llvm-project/pull/155420