[llvm] [llvm]Add a simple Telemetry framework (PR #102323)

[James Henderson via llvm-commits]

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@@ -116,29 +114,29 @@ To use Telemetry in your tool, you need to provide a concrete implementation of
     };
     
     // This defines a custom TelemetryInfo that has an addition Msg field.
-    struct MyTelemetryInfo : public llvm::telemetry::TelemetryInfo {
+    struct MyTelemetryInfo : public telemetry::TelemetryInfo {
       std::string Msg;
       
-      json::Object serializeToJson() const {
-        json::Object Ret = TelemeteryInfo::serializeToJson();
+      json::Object serializeToJson() oconst {
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jh7370 wrote:

(Probably irrelevant if this is going away, but typo `oconst` -> `const override`)

https://github.com/llvm/llvm-project/pull/102323