[llvm] [Exegesis][RISCV] Add RISCV support for llvm-exegesis (PR #89047)

[Michael Maitland via llvm-commits]

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@@ -0,0 +1,66 @@
+//===-- RISCVCounters.cpp ---------------------------------------*- 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
+//
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michaelmaitland wrote:

Should you add a description of this file here like there are for other files ([example](https://github.com/llvm/llvm-project/blob/2834e8ad1cfe32b69a8b5a1dd2477725683a61c4/llvm/lib/Target/RISCV/RISCVISelLowering.cpp#L9))?

https://github.com/llvm/llvm-project/pull/89047