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

[James Henderson via llvm-commits]

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@@ -0,0 +1,163 @@
+//===- llvm/Telemetry/Telemetry.h - Telemetry -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file provides the basic framework for Telemetry
----------------
jh7370 wrote:

It's probably worth moving the bulk of this commentary into a document on the LLVM website. I'm not entirely certain where that might best be located, but perhaps a new user guide under https://llvm.org/docs/UserGuides.html#additional-topics?

I'd keep here a high-level summary of the key components and then point to the document for more details.

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