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

[via llvm-commits]

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@@ -291,6 +297,22 @@ T ExitOnFileError(const Twine &FileName, Expected<T> &&E) {
   return std::move(*E);
 }
 
+static const char *getIgnoredOpcodeReasonOrNull(const LLVMState &State,
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AnastasiyaChernikova wrote:

I can't find a function with similar logic. Can you please tell me its name?

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